/* ======================
   Wabisabi Landing Page CSS
   Dark Theme, Mobile-First
   ====================== */

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Colors */
    --color-bg: #000000;
    --color-bg-secondary: #121212;
    --color-bg-card: #1a1a1a;
    --color-text-primary: #ffffff;
    --color-text-secondary: #b3b3b3;
    --color-accent: #ffffff;
    --color-highlight: #4a9eff;
    --color-border: #333333;
    --color-success: #4caf50;
    --color-error: #f44336;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 4rem;
    --spacing-xxl: 6rem;
    
    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;
    --font-size-3xl: 2.5rem;
    --font-size-4xl: 3rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-base: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    line-height: 1.6;
    font-size: var(--font-size-base);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Container */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* ======================
   Header & Navigation
   ====================== */

.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(0, 0, 0, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--color-border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-sm) var(--spacing-md);
}

.nav-content {
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
}

.logo-link {
    display: flex;
    align-items: center;
    justify-content: center;
}

.logo {
    height: 40px;
    width: auto;
    transition: transform var(--transition-base);
}

.logo:hover {
    transform: scale(1.05);
}

.desktop-nav {
    display: none;
    gap: var(--spacing-lg);
    position: absolute;
    right: 0;
}

.nav-link {
    color: var(--color-text-primary);
    text-decoration: none;
    font-size: var(--font-size-base);
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-base);
}

.nav-link:hover {
    color: var(--color-accent);
}

.nav-link:hover::after {
    width: 100%;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    width: 30px;
    height: 24px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0;
    position: absolute;
    right: 0;
}

.hamburger-line {
    width: 100%;
    height: 2px;
    background-color: var(--color-text-primary);
    transition: all var(--transition-base);
}

.mobile-menu-btn.active .hamburger-line:nth-child(1) {
    transform: rotate(45deg) translateY(10px);
}

.mobile-menu-btn.active .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-menu-btn.active .hamburger-line:nth-child(3) {
    transform: rotate(-45deg) translateY(-10px);
}

/* Mobile Navigation */
.mobile-nav {
    display: none;
    flex-direction: column;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) 0;
    border-top: 1px solid var(--color-border);
    margin-top: var(--spacing-sm);
}

.mobile-nav.active {
    display: flex;
}

/* Desktop Navigation */
@media (min-width: 768px) {
    .desktop-nav {
        display: flex;
    }
    
    .mobile-menu-btn {
        display: none;
    }
    
    .mobile-nav {
        display: none !important;
    }
}

/* ======================
   Main Content
   ====================== */

.main-content {
    margin-top: 72px;
    min-height: calc(100vh - 72px);
}

/* Messages */
.messages-container {
    position: fixed;
    top: 80px;
    right: var(--spacing-md);
    z-index: 999;
    max-width: 400px;
}

.message {
    padding: var(--spacing-sm) var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    border-radius: var(--radius-md);
    background-color: var(--color-bg-card);
    border-left: 4px solid var(--color-success);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.5);
    animation: slideIn 0.3s ease;
}

.message-error {
    border-left-color: var(--color-error);
}

.message-close {
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0 0 0 var(--spacing-md);
    line-height: 1;
}

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ======================
   Sections
   ====================== */

section {
    padding: var(--spacing-xl) 0;
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    text-align: center;
    margin-bottom: var(--spacing-md);
}

.section-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    text-align: center;
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

/* ======================
   Hero Section
   ====================== */

.hero-section {
    padding: var(--spacing-xxl) 0;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
}

.hero-content {
    text-align: center;
    max-width: 900px;
    margin: 0 auto;
}

.hero-video {
    margin-bottom: var(--spacing-lg);
    position: relative;
    width: 100%;
}

.video-embed-container {
    position: relative;
    width: 100%;
    height: 100%;
}

.video-fallback {
    margin-top: var(--spacing-md);
    text-align: center;
    padding: var(--spacing-md);
}

.fallback-text {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

/* Video Clickable Thumbnail */
.video-link {
    display: block;
    text-decoration: none;
    width: 100%;
}

.video-thumbnail-container {
    position: relative;
    width: 100%;
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
    cursor: pointer;
    background-color: var(--color-bg-card);
}

.video-link:hover .video-thumbnail-container {
    transform: scale(1.02);
    box-shadow: 0 8px 24px rgba(255, 255, 255, 0.15);
}

.video-thumbnail-img {
    width: 100%;
    height: auto;
    display: block;
    aspect-ratio: 16/9;
    object-fit: cover;
}

.play-overlay {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    transition: transform var(--transition-base);
    opacity: 0.95;
    pointer-events: none;
}

.play-icon {
    width: 80px;
    height: 56px;
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.3));
}

.video-link:hover .play-overlay {
    transform: translate(-50%, -50%) scale(1.1);
    opacity: 1;
}

/* Mobile Video - Show on small screens */
.hero-video-mobile {
    display: block;
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
}

.hero-video-mobile .video-embed-container {
    position: relative;
    width: 100%;
    padding-bottom: 177.78%; /* 9:16 aspect ratio (16/9 * 100) */
    border-radius: var(--radius-lg);
    overflow: hidden;
    background-color: var(--color-bg-card);
}

.hero-video-mobile iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* Desktop Video - Hide on small screens */
.hero-video-desktop {
    display: none;
}

.hero-video-desktop .video-embed-container {
    position: relative;
    width: 100%;
    padding-bottom: 56.25%; /* 16:9 aspect ratio */
    border-radius: var(--radius-lg);
    overflow: hidden;
    background-color: var(--color-bg-card);
}

.hero-video-desktop iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: none;
}

/* Desktop Video - Show on larger screens */
@media (min-width: 768px) {
    .hero-video-mobile {
        display: none;
    }
    
    .hero-video-desktop {
        display: block;
        width: 100%;
    }
}

/* Legacy placeholder styles (if needed for fallback) */
.video-placeholder {
    aspect-ratio: 16/9;
    background-color: var(--color-bg-card);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border: 2px dashed var(--color-border);
}

.video-placeholder-text {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.video-placeholder-subtext {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

.hero-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    line-height: 1.2;
    background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-highlight) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-tagline-container {
    min-height: 60px;
    margin-bottom: var(--spacing-md);
}

.hero-tagline {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    font-style: italic;
}

.animated-tagline {
    animation: fadeInOut 3s ease-in-out infinite;
}

@keyframes fadeInOut {
    0%, 100% { opacity: 0.7; }
    50% { opacity: 1; }
}

.hero-stat {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
}

.citation-ref {
    color: var(--color-highlight);
    text-decoration: none;
    font-weight: 600;
    transition: color var(--transition-fast);
    font-size: 0.65rem;
}

.citation-ref:hover {
    color: var(--color-accent);
}

.highlight {
    color: var(--color-accent);
    font-weight: 600;
}

.hero-subheadline {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    align-items: center;
    margin-top: var(--spacing-lg);
}

/* ======================
   Buttons
   ====================== */

.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    text-decoration: none;
    display: inline-block;
    transition: all var(--transition-base);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--color-accent);
    color: var(--color-bg);
}

.btn-primary:hover {
    background-color: var(--color-text-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 255, 255, 0.2);
}

.btn-secondary {
    background-color: transparent;
    color: var(--color-text-primary);
    border: 2px solid var(--color-text-primary);
}

.btn-secondary:hover {
    background-color: var(--color-text-primary);
    color: var(--color-bg);
}

.btn-large {
    padding: var(--spacing-md) var(--spacing-xl);
    font-size: var(--font-size-lg);
}

.btn-small {
    padding: var(--spacing-xs) var(--spacing-md);
    font-size: var(--font-size-sm);
}

/* ======================
   Forms
   ====================== */

.waitlist-form {
    width: 100%;
    max-width: 500px;
}

.waitlist-input-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.waitlist-input,
input[type="email"] {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-bg-card);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-fast);
    width: 100%;
}

.waitlist-input:focus,
input[type="email"]:focus {
    outline: none;
    border-color: var(--color-accent);
}

/* ======================
   Contact Form Section
   ====================== */

.contact-hero {
    padding: var(--spacing-xxl) 0 var(--spacing-xl) 0;
    text-align: center;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
}

.contact-section {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-bg-secondary);
}

.contact-form-container {
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-lg);
    background-color: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-form-group {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.contact-label {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.contact-input,
.contact-textarea {
    padding: var(--spacing-sm) var(--spacing-md);
    border: 2px solid var(--color-border);
    border-radius: var(--radius-md);
    background-color: var(--color-bg);
    color: var(--color-text-primary);
    font-family: var(--font-primary);
    font-size: var(--font-size-base);
    transition: border-color var(--transition-base);
}

.contact-textarea {
    min-height: 150px;
    resize: vertical;
    line-height: 1.6;
}

.contact-input:focus,
.contact-textarea:focus {
    outline: none;
    border-color: var(--color-accent);
}

.contact-input::placeholder,
.contact-textarea::placeholder {
    color: var(--color-text-secondary);
    opacity: 0.6;
}

.contact-error {
    color: var(--color-error);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
}

.contact-submit {
    margin-top: var(--spacing-sm);
    width: 100%;
}

.contact-alternative {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.contact-alternative p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.contact-email-link {
    color: var(--color-highlight);
    text-decoration: none;
    font-size: var(--font-size-lg);
    font-weight: 500;
    transition: color var(--transition-base);
}

.contact-email-link:hover {
    color: var(--color-accent);
    text-decoration: underline;
}

/* Responsive - Mobile */
@media (max-width: 767px) {
    .contact-form-container {
        padding: var(--spacing-md);
    }
    
    .contact-section {
        padding: var(--spacing-lg) 0;
    }
}

/* ======================
   Problem Section
   ====================== */

.problem-section {
    background-color: var(--color-bg-secondary);
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    align-items: stretch;
}

.stat-card-link {
    text-decoration: none;
    color: inherit;
    display: block;
    height: 100%;
}

.stat-card {
    background-color: var(--color-bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--color-border);
    transition: transform var(--transition-base), border-color var(--transition-base);
    cursor: pointer;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    min-height: 200px;
}

.stat-card-link:hover .stat-card {
    transform: translateY(-4px);
    border-color: var(--color-highlight);
}

.stat-display {
    margin-bottom: var(--spacing-sm);
}

.stat-number {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    color: var(--color-highlight);
}

.stat-unit {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    color: var(--color-highlight);
}

.stat-description {
    margin-top: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
}

.transition-text {
    text-align: center;
    font-size: var(--font-size-xl);
    font-style: italic;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xl);
}

/* ======================
   Immersive Content Section
   ====================== */

.immersive-section {
    background-color: var(--color-bg);
    overflow: visible; /* Allow carousel navigation to extend outside */
}

.carousel-container {
    margin-top: var(--spacing-xl);
    position: relative;
    overflow: visible; /* Allow navigation buttons to extend outside */
    padding: 0 60px; /* Add space for buttons on desktop */
}

@media (max-width: 1024px) {
    .carousel-container {
        padding: 0 40px; /* Less padding on tablet */
    }
}

@media (max-width: 768px) {
    .carousel-container {
        padding: 0; /* No extra padding on mobile, buttons will be inside */
    }
}

.screenshot-card {
    text-align: center;
    padding: var(--spacing-md);
}

.screenshot-image {
    margin-bottom: var(--spacing-md);
    border-radius: var(--radius-lg);
    overflow: hidden;
    background-color: var(--color-bg-card);
    aspect-ratio: 9/19.5;
    display: flex;
    align-items: center;
    justify-content: center;
}

.screenshot-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.screenshot-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.screenshot-description {
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
    line-height: 1.6;
}

/* Swiper Customization */
.swiper {
    padding-bottom: var(--spacing-xl);
}

.swiper-pagination {
    bottom: 0 !important;
}

.swiper-pagination-bullet {
    background-color: var(--color-text-secondary);
    opacity: 0.5;
}

.swiper-pagination-bullet-active {
    background-color: var(--color-accent);
    opacity: 1;
}

.swiper-button-prev,
.swiper-button-next {
    color: var(--color-accent);
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
}

.swiper-button-prev {
    left: -15px; /* Push further left */
}

.swiper-button-next {
    right: -15px; /* Push further right */
}

.swiper-button-prev::after,
.swiper-button-next::after {
    font-size: 24px;
    font-weight: bold;
}

/* On tablets */
@media (max-width: 1024px) {
    .swiper-button-prev {
        left: -10px;
    }
    
    .swiper-button-next {
        right: -10px;
    }
}

/* On mobile, position inside the carousel */
@media (max-width: 768px) {
    .swiper-button-prev {
        left: 10px;
    }
    
    .swiper-button-next {
        right: 10px;
    }
    
    .swiper-button-prev::after,
    .swiper-button-next::after {
        font-size: 20px;
    }
    
    .swiper-button-prev,
    .swiper-button-next {
        width: 36px;
        height: 36px;
    }
}

/* ======================
   How It Works Section
   ====================== */

.how-it-works-section {
    background-color: var(--color-bg-secondary);
}

.steps-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.step-card {
    background-color: var(--color-bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--color-border);
    transition: transform var(--transition-base);
}

.step-card:hover {
    transform: translateY(-4px);
}

.step-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.step-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.step-description {
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
}

/* ======================
   Launch APB Section
   ====================== */

.launch-apb-section {
    background-color: var(--color-bg-secondary);
}

.apb-buttons-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.apb-button-card {
    background-color: var(--color-bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    text-align: center;
    border: 1px solid var(--color-border);
    transition: transform var(--transition-base);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    min-height: 400px;
}

.apb-button-card:hover {
    transform: translateY(-4px);
}

.button-image {
    margin-bottom: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 300px;
}

.button-image img {
    width: 100%;
    height: auto;
    display: block;
    border-radius: var(--radius-md);
}

.button-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-primary);
}

.button-description {
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
    line-height: 1.8;
    max-width: 400px;
}

.launch-apb-callout {
    margin-top: var(--spacing-xl);
    text-align: center;
    padding: var(--spacing-lg);
    background-color: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border-left: 4px solid var(--color-highlight);
}

.callout-highlight {
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-accent);
    margin-bottom: var(--spacing-sm);
}

.callout-subtext {
    color: var(--color-text-secondary);
    font-size: var(--font-size-base);
    line-height: 1.6;
}

/* ======================
   APB Introduction Section
   ====================== */

.apb-intro-section {
    background-color: var(--color-bg);
}

.apb-content {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: var(--spacing-xl);
}

.apb-description p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.apb-features {
    list-style: none;
    padding: 0;
}

.apb-features li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
}

.apb-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-highlight);
    font-weight: 700;
}

.apb-screenshot {
    border-radius: var(--radius-lg);
    overflow: hidden;
    background-color: var(--color-bg-card);
}

.apb-screenshot img {
    width: 100%;
    height: auto;
    display: block;
}

/* ======================
   Multi-Tasking Section
   ====================== */

.multitasking-section {
    background-color: var(--color-bg-secondary);
    overflow: visible; /* Allow carousel navigation to extend outside */
}

.multitasking-details {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-xl);
}

.detail-card {
    background-color: var(--color-bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-highlight);
}

.detail-text {
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
}

.callout-text {
    text-align: center;
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-top: var(--spacing-xl);
    color: var(--color-accent);
}

.patent-notice {
    text-align: center;
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-sm);
    color: var(--color-text-secondary);
    font-style: italic;
    opacity: 0.8;
}

.ios-coming-soon {
    text-align: center;
    font-size: var(--font-size-base);
    margin-top: var(--spacing-md);
    color: var(--color-text-secondary);
    font-weight: 500;
}

.ios-coming-soon-large {
    text-align: center;
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
    font-weight: 500;
}

/* ======================
   CarPlay Section
   ====================== */

.carplay-section {
    background-color: var(--color-bg);
}

.carplay-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.carplay-description p {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
    color: var(--color-text-secondary);
}

.safety-note {
    padding: var(--spacing-md);
    background-color: var(--color-bg-card);
    border-left: 4px solid var(--color-highlight);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
}

.carplay-mockup {
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.mockup-placeholder {
    aspect-ratio: 16/9;
    background-color: var(--color-bg-card);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border: 2px dashed var(--color-border);
    padding: var(--spacing-xl);
}

.mockup-placeholder p {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.mockup-placeholder .small {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

.final-cta {
    text-align: center;
    margin-top: var(--spacing-xl);
}

/* ======================
   Sticky Waitlist Bar
   ====================== */

.sticky-waitlist-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: rgba(18, 18, 18, 0.98);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-sm) var(--spacing-md);
    z-index: 999;
    transform: translateY(0);
    transition: transform var(--transition-base);
}

.sticky-waitlist-bar.hidden {
    transform: translateY(100%);
}

.sticky-bar-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    align-items: center;
    position: relative;
}

.sticky-bar-text {
    font-size: var(--font-size-base);
    color: var(--color-text-secondary);
}

.sticky-waitlist-form {
    display: flex;
    gap: var(--spacing-sm);
    width: 100%;
    max-width: 400px;
}

.sticky-waitlist-form input {
    flex: 1;
}

.sticky-bar-close {
    position: absolute;
    top: -8px;
    right: 0;
    background: transparent;
    border: none;
    color: var(--color-text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0;
    line-height: 1;
}

/* ======================
   About Page
   ====================== */

.about-hero {
    padding: var(--spacing-xxl) 0 var(--spacing-xl) 0;
    text-align: center;
    background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-secondary) 100%);
}

.page-title {
    font-size: var(--font-size-4xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-highlight) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.page-subtitle {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

.problem-detail-section {
    background-color: var(--color-bg-secondary);
}

.problem-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.problem-card {
    background-color: var(--color-bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    align-items: center;
}

.problem-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.problem-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    text-align: center;
}

.problem-list {
    list-style: none;
    padding: 0;
    text-align: left;
    max-width: 500px;
    width: 100%;
}

.problem-list li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.problem-list li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-highlight);
    font-weight: 700;
    font-size: 1.5rem;
}

.solution-section {
    background-color: var(--color-bg);
}

.section-intro {
    text-align: center;
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 700px;
    margin: 0 auto var(--spacing-xl) auto;
    line-height: 1.8;
}

.solution-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
}

.solution-card {
    background-color: var(--color-bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: transform var(--transition-base);
    text-align: center;
}

.solution-card:hover {
    transform: translateY(-4px);
}

.solution-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

.solution-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.solution-description {
    color: var(--color-text-secondary);
    line-height: 1.8;
}

.mission-section {
    background-color: var(--color-bg-secondary);
}

.mission-content {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
    text-align: center;
}

.mission-text {
    max-width: 900px;
    margin: 0 auto;
}

.mission-paragraph {
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
    color: var(--color-text-secondary);
    font-size: var(--font-size-lg);
}

.philosophy-box {
    background-color: var(--color-bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 2px solid var(--color-border);
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.philosophy-title {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
}

.philosophy-text {
    color: var(--color-text-secondary);
    line-height: 1.8;
    font-style: italic;
}

.back-to-home {
    text-align: center;
    margin-top: var(--spacing-xl);
}

/* Team Section */
.team-section {
    background-color: var(--color-bg);
    padding: var(--spacing-xxl) 0;
}

.team-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.founder-card,
.feedback-card {
    background-color: var(--color-bg-card);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    text-align: center;
    transition: transform var(--transition-base);
}

.founder-card:hover,
.feedback-card:hover {
    transform: translateY(-4px);
}

.founder-icon,
.feedback-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.founder-title,
.feedback-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
}

.founder-description,
.feedback-description {
    color: var(--color-text-secondary);
    line-height: 1.8;
    font-size: var(--font-size-lg);
}

.team-closing {
    text-align: center;
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xl);
    font-style: italic;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* ======================
   Footer
   ====================== */

.footer {
    background-color: var(--color-bg-secondary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0;
    margin-top: var(--spacing-xxl);
}

.footer-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-md);
    text-align: center;
    padding: 0 var(--spacing-md);
    max-width: 1200px;
    margin: 0 auto;
}

.footer-text {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.footer-links {
    display: flex;
    gap: var(--spacing-md);
}

.footer-link {
    color: var(--color-text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--color-accent);
}

/* ======================
   Animations
   ====================== */

.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ======================
   Responsive Design
   ====================== */

@media (min-width: 640px) {
    .waitlist-input-group {
        flex-direction: row;
    }
    
    .hero-cta {
        flex-direction: row;
        justify-content: center;
    }
    
    .stats-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .steps-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .multitasking-details {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .sticky-bar-content {
        flex-direction: row;
        justify-content: center;
    }
    
    .sticky-waitlist-form {
        width: auto;
    }
}

@media (min-width: 768px) {
    :root {
        --font-size-3xl: 3rem;
        --font-size-4xl: 3.5rem;
    }
    
    .hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .problem-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .apb-buttons-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .solution-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .apb-content {
        flex-direction: row;
        align-items: center;
        gap: 0;
    }
    
    .howto-apb-content {
        gap: 0.5rem !important;
    }
    
    .howto-apb-content .apb-description {
        flex: 1 1 auto;
        padding-right: 0;
        margin-right: 0.5rem !important;
        max-width: calc(50% - 0.25rem);
    }
    
    .howto-apb-content .apb-screenshot {
        flex: 1 1 auto;
        max-width: calc(50% - 0.25rem);
        padding-left: 0;
        margin-left: 0;
    }
    
    .apb-description {
        flex: 1;
        padding-right: 0;
        margin-right: 0.5rem;
    }
    
    .apb-screenshot {
        flex: 1;
        max-width: 400px;
        padding-left: 0;
        margin-left: 0;
    }
    
    .carplay-content {
        flex-direction: row;
        align-items: center;
    }
    
    .carplay-description {
        flex: 1;
    }
    
    .carplay-mockup {
        flex: 1;
    }
    
    .mission-content {
        flex-direction: column;
        text-align: center;
    }
    
    .mission-text {
        max-width: 900px;
        margin: 0 auto;
    }
    
    .philosophy-box {
        max-width: 600px;
        margin: 0 auto;
    }
    
    .footer-content {
        flex-direction: row;
        justify-content: space-between;
    }
}

@media (min-width: 1024px) {
    section {
        padding: var(--spacing-xxl) 0;
    }
    
    .solution-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .team-content {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ======================
   Video Citation
   ====================== */

.video-citation-text {
    position: absolute;
    bottom: 0;
    right: -30px;
    margin: 0;
    font-size: 0.65rem;
}

.hero-video-desktop {
    position: relative;
}

.hero-video-mobile {
    position: relative;
}

/* ======================
   Citations Footer (Ultra Compact)
   ====================== */

.citations-footer {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-sm) 0;
    border-top: 1px solid var(--color-border);
    font-size: 0.65rem;
}

.citations-compact {
    max-width: 1000px;
    margin: 0 auto;
}

.citations-heading {
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 0.25rem;
}

.citations-ordered-list {
    list-style-position: inside;
    padding: 0;
    margin: 0;
    color: var(--color-text-secondary);
    line-height: 1.5;
}

.citations-ordered-list li {
    margin-bottom: 0.25rem;
}

.citations-ordered-list a {
    color: var(--color-highlight);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.citations-ordered-list a:hover {
    color: var(--color-accent);
    text-decoration: underline;
}

/* ======================
   Print Styles
   ====================== */

@media print {
    .header,
    .sticky-waitlist-bar,
    .footer {
        display: none;
    }
    
    .main-content {
        margin-top: 0;
    }
}

/* ======================
   How-To Page Styles
   ====================== */

.howto-container {
    display: flex;
    min-height: 100vh;
    padding-top: 80px;
}

/* Sidebar */
.howto-sidebar {
    position: fixed;
    top: 80px;
    left: 0;
    bottom: 0;
    width: 280px;
    background-color: var(--color-bg-secondary);
    border-right: 1px solid var(--color-border);
    overflow-y: auto;
    z-index: 900;
    transform: translateX(-100%);
    transition: transform var(--transition-base);
}

.howto-sidebar.active {
    transform: translateX(0);
}

.sidebar-toggle {
    position: fixed;
    top: 90px;
    left: var(--spacing-sm);
    z-index: 950;
    background-color: var(--color-bg-card);
    border: 1px solid var(--color-border);
    color: var(--color-text-primary);
    width: 45px;
    height: 45px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.sidebar-toggle:hover {
    background-color: var(--color-highlight);
    border-color: var(--color-highlight);
}

.toggle-icon {
    font-size: 1.5rem;
}

.sidebar-nav {
    padding: var(--spacing-md);
}

.sidebar-title {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
}

.sidebar-menu {
    list-style: none;
}

.sidebar-menu > li {
    margin-bottom: var(--spacing-sm);
}

.sidebar-link {
    display: block;
    padding: var(--spacing-sm);
    color: var(--color-text-secondary);
    text-decoration: none;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
    font-size: var(--font-size-sm);
}

.sidebar-link:hover,
.sidebar-link.active {
    background-color: var(--color-bg-card);
    color: var(--color-text-primary);
}

.sidebar-submenu {
    list-style: none;
    padding-left: var(--spacing-md);
    margin-top: var(--spacing-xs);
}

.sidebar-submenu .sidebar-link {
    font-size: 0.8125rem;
    padding: var(--spacing-xs) var(--spacing-sm);
}

/* Main Content */
.howto-main {
    flex: 1;
    margin-left: 0;
    padding: var(--spacing-md);
    max-width: 100%;
}

/* Hero Section */
.howto-hero {
    text-align: center;
    padding: var(--spacing-xl) 0;
    margin-bottom: var(--spacing-lg);
}

.howto-hero-title {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    margin-bottom: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-highlight) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.howto-hero-subtitle {
    font-size: var(--font-size-xl);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
}

.howto-hero-description {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

/* Sections */
.howto-section {
    margin-bottom: var(--spacing-xxl);
    scroll-margin-top: 100px;
}

.section-heading {
    font-size: var(--font-size-2xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--color-border);
}

.section-intro {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-md);
    line-height: 1.8;
}

.highlight-section {
    background-color: var(--color-bg-secondary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

/* Intro Grid */
.intro-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.intro-card {
    background-color: var(--color-bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    text-align: center;
    transition: all var(--transition-base);
}

.intro-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-highlight);
}

.intro-icon {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

.intro-card h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.intro-card p {
    color: var(--color-text-secondary);
    line-height: 1.6;
}

/* Feature Blocks */
.feature-block {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    padding: var(--spacing-lg);
    background-color: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.feature-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.feature-description {
    color: var(--color-text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-md);
}

.feature-details h4 {
    font-size: var(--font-size-lg);
    margin: var(--spacing-md) 0 var(--spacing-sm) 0;
}

.feature-list {
    list-style: none;
    padding-left: 0;
}

.feature-list li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.feature-list li::before {
    content: "•";
    position: absolute;
    left: 0;
    color: var(--color-highlight);
    font-weight: bold;
}

.feature-list li strong {
    color: var(--color-text-primary);
}

.feature-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.feature-image img {
    max-width: 100%;
    max-height: 80vh;
    height: auto;
    width: auto;
    object-fit: contain;
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

/* APB Buttons Showcase */
.apb-buttons-showcase {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.apb-button-demo {
    background-color: var(--color-bg-card);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    text-align: center;
}

.apb-button-demo img {
    max-width: 200px;
    height: auto;
    margin-bottom: var(--spacing-sm);
    border-radius: var(--radius-sm);
}

.apb-button-demo h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-xs);
}

.apb-button-demo p {
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

/* APB Features */
.apb-feature {
    margin-top: var(--spacing-xxl);
    margin-bottom: var(--spacing-xl);
}

.apb-feature-title {
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--color-highlight);
}

.apb-visual {
    display: flex;
    justify-content: center;
    align-items: center;
    margin: var(--spacing-lg) 0;
    padding: var(--spacing-md);
    background-color: var(--color-bg);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.apb-visual img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-sm);
}

/* Controls Grid */
.controls-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-md);
    margin: var(--spacing-lg) 0;
}

.control-item {
    background-color: var(--color-bg);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    text-align: center;
}

.control-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

.control-item h4 {
    font-size: var(--font-size-base);
    margin-bottom: var(--spacing-xs);
}

.control-item p {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

.control-shortcut {
    font-size: 0.75rem;
    color: var(--color-text-secondary);
    margin-top: var(--spacing-xs);
    padding-top: var(--spacing-xs);
    border-top: 1px solid var(--color-border);
}

.control-shortcut strong {
    color: var(--color-highlight);
}

/* Info Boxes */
.info-box,
.tip-box,
.visual-indicator-box {
    background-color: var(--color-bg);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border-left: 4px solid var(--color-highlight);
    margin: var(--spacing-md) 0;
}

.tip-box {
    border-left-color: var(--color-success);
}

.info-box p,
.tip-box p,
.visual-indicator-box p {
    margin: var(--spacing-xs) 0;
    color: var(--color-text-secondary);
}

.info-box strong,
.tip-box strong,
.visual-indicator-box strong {
    color: var(--color-text-primary);
}

/* Lock Examples */
.lock-examples {
    background-color: var(--color-bg);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
}

.lock-examples h4 {
    margin-bottom: var(--spacing-sm);
}

/* Deep Dive */
.deepdive-explanation {
    margin: var(--spacing-md) 0;
}

.deepdive-options {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.deepdive-option {
    background-color: var(--color-bg);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-highlight);
}

.deepdive-option h5 {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--color-highlight);
}

.deepdive-option p {
    color: var(--color-text-secondary);
    line-height: 1.6;
    margin: 0;
}

.deepdive-steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-sm);
    margin: var(--spacing-md) 0;
}

.step-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    background-color: var(--color-bg);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    border: 1px solid var(--color-border);
}

.step-number {
    flex-shrink: 0;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--color-highlight) 0%, #357abd 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--font-size-lg);
}

.step-item p {
    color: var(--color-text-secondary);
    margin: 0;
}

.advanced-navigation {
    background-color: var(--color-bg);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
}

.advanced-navigation h4 {
    margin-bottom: var(--spacing-sm);
}

/* Recording Process */
.recording-process {
    margin: var(--spacing-md) 0;
}

.numbered-list {
    list-style: none;
    counter-reset: item;
    padding-left: 0;
}

.numbered-list li {
    counter-increment: item;
    padding: var(--spacing-sm) 0 var(--spacing-sm) 3rem;
    position: relative;
    color: var(--color-text-secondary);
    line-height: 1.6;
}

.numbered-list li::before {
    content: counter(item);
    position: absolute;
    left: 0;
    top: var(--spacing-sm);
    width: 30px;
    height: 30px;
    background-color: var(--color-highlight);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
}

/* Create Content */
.create-overview {
    background-color: var(--color-bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    margin-bottom: var(--spacing-lg);
}

.create-overview p {
    font-size: var(--font-size-lg);
    line-height: 1.8;
}

.create-types h3,
.create-limits h3 {
    font-size: var(--font-size-xl);
    margin: var(--spacing-lg) 0 var(--spacing-md) 0;
}

.post-types-grid,
.limits-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.post-type-card,
.limit-card {
    background-color: var(--color-bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    text-align: center;
}

.post-type-card:hover {
    transform: translateY(-3px);
    border-color: var(--color-highlight);
}

.post-type-icon {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    display: block;
    text-align: center;
}

.post-type-card h4,
.limit-card h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.post-type-card p,
.limit-card p {
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-sm);
}

.post-type-card ul {
    list-style: none;
    padding-left: 0;
    margin-top: var(--spacing-sm);
    text-align: left;
}

.post-type-card ul li {
    padding: var(--spacing-xs) 0;
    padding-left: var(--spacing-md);
    position: relative;
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
}

.post-type-card ul li::before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-success);
}

.limit-card.warning {
    border-color: var(--color-error);
}

.limit-card.warning h4 {
    color: var(--color-error);
}

/* Interactions */
.interaction-overview {
    margin-bottom: var(--spacing-lg);
}

.interaction-overview h3 {
    font-size: var(--font-size-xl);
    margin-bottom: var(--spacing-sm);
}

.detail-types {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.detail-type {
    background-color: var(--color-bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    text-align: center;
}

.detail-type h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.detail-type .feature-list {
    text-align: left;
}

.comment-features h3,
.prioritization-info h3,
.actions-available h3 {
    font-size: var(--font-size-xl);
    margin: var(--spacing-lg) 0 var(--spacing-md) 0;
}

.comment-grid,
.actions-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin: var(--spacing-md) 0;
}

.comment-feature,
.action-card {
    background-color: var(--color-bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    text-align: center;
}

.comment-feature h4,
.action-card h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.comment-feature p {
    color: var(--color-text-secondary);
    text-align: center;
}

.action-card p {
    color: var(--color-text-secondary);
    text-align: center;
}

.action-icon {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
    display: block;
    text-align: center;
}

.progress-indicator {
    display: inline-block;
    margin-right: var(--spacing-xs);
}

.progress-indicator.white-ring {
    color: var(--color-text-primary);
}

.progress-indicator.light-grey {
    color: #999;
}

.progress-indicator.dark-grey {
    color: #666;
}

/* Tips Section */
.tips-section {
    background: linear-gradient(135deg, var(--color-bg-secondary) 0%, var(--color-bg) 100%);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
}

.tips-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
}

.tip-card {
    background-color: var(--color-bg-card);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
    text-align: center;
}

.tip-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-highlight);
}

.tip-number {
    display: block;
    width: 35px;
    height: 35px;
    background: linear-gradient(135deg, var(--color-highlight) 0%, #357abd 100%);
    border-radius: 50%;
    text-align: center;
    line-height: 35px;
    font-weight: 700;
    margin: 0 auto var(--spacing-sm) auto;
}

.tip-card h4 {
    font-size: var(--font-size-lg);
    margin-bottom: var(--spacing-sm);
    text-align: center;
}

.tip-card p {
    color: var(--color-text-secondary);
    line-height: 1.6;
    text-align: center;
}

/* CTA Section */
.howto-cta {
    text-align: center;
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--color-bg-card) 0%, var(--color-bg-secondary) 100%);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
}

.howto-cta h2 {
    font-size: var(--font-size-2xl);
    margin-bottom: var(--spacing-sm);
}

.howto-cta p {
    font-size: var(--font-size-lg);
    color: var(--color-text-secondary);
    margin-bottom: var(--spacing-lg);
}

/* Responsive - Tablet */
@media (min-width: 768px) {
    .intro-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .feature-block {
        grid-template-columns: 1fr 1fr;
        align-items: center;
    }
    
    .feature-block.reverse {
        grid-template-columns: 1fr 1fr;
    }
    
    .feature-block.reverse .feature-content {
        order: 2;
    }
    
    .feature-block.reverse .feature-image {
        order: 1;
    }
    
    .apb-buttons-showcase {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .controls-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .deepdive-options {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .deepdive-steps {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .post-types-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .limits-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .detail-types {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .comment-grid {
        grid-template-columns: repeat(3, 1fr);
    }
    
    .actions-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .tips-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Responsive - Desktop */
@media (min-width: 1024px) {
    .sidebar-toggle {
        display: none;
    }
    
    .howto-sidebar {
        transform: translateX(0);
    }
    
    .howto-main {
        margin-left: 280px;
        max-width: calc(100% - 280px);
    }
    
    .howto-hero-title {
        font-size: var(--font-size-4xl);
    }
    
    .controls-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .deepdive-steps {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .limits-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .actions-grid {
        grid-template-columns: repeat(4, 1fr);
    }
    
    .tips-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}



/* Force deepdive steps to stack on mobile */
@media (max-width: 767px) {
    .deepdive-steps {
        grid-template-columns: 1fr !important;
    }
    
    .step-item {
        width: 100%;
        max-width: 100%;
    }
}

/* Ensure all grid layouts are properly responsive on mobile */
@media (max-width: 767px) {
    .apb-buttons-showcase {
        grid-template-columns: 1fr !important;
    }
    
    .deepdive-options {
        grid-template-columns: 1fr !important;
    }
}

/* Basic Controls: 1 column on mobile to prevent overflow */
@media (max-width: 767px) {
    .controls-grid {
        grid-template-columns: 1fr !important;
    }
}