/* ============================================
   Spēek Marketing Website - Design System
   ============================================ */

/* CSS Custom Properties - Colors (Only from DesignColors) */
:root {
    /* Design Colors - Exact matches from DesignColors enum */
    --color-black: #232C33;
    --color-white: #F4F3EE;
    --color-green: #3BAF53;
    --color-amber: #E6A100;
    --color-hot-pink: #D1345B;
    --color-blue: #80C3E5;
    --color-pink1: #E4B1D2;
    --color-pink2: #EE90D3;
    --color-pink3: #E394DB;
    --color-pink4: #DD9AAC;
    
    /* Gradient stops matching LessonStateColor.sharedActiveGradient */
    --gradient-blue: #80C3E5;
    --gradient-pink1: #E4B1D2;
    --gradient-pink2: #EE90D3;
    --gradient-pink3: #E394DB;
    --gradient-pink4: #DD9AAC;
    
    /* Typography */
    --font-title: 'Newsreader', serif;
    --font-body: 'Outfit', sans-serif;
    
    /* Spacing - Increased for more breathing room */
    --spacing-xs: 12px;
    --spacing-s: 24px;
    --spacing-m: 40px;
    --spacing-l: 64px;
    --spacing-xl: 96px;
    --spacing-xxl: 120px;
    --spacing-xxxl: 160px;
    
    /* Border Radius */
    --radius-button: 12px;
    --radius-card: 16px;
    --radius-large: 32px;
    
    /* Shadows */
    --shadow-soft: 0 0 16px rgba(0, 0, 0, 0.08);
    
    /* Transitions */
    --transition-fast: 0.05s ease-in-out;
    --transition-normal: 0.2s ease-in-out;
    --transition-slow: 0.6s ease-in-out;
}

/* ============================================
   Reset & Base Styles
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: 19.2px; /* Typography.Body.m * 1.2 */
    line-height: 1.5;
    color: var(--color-black);
    background-color: var(--color-white);
    overflow-x: hidden;
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-title);
    font-weight: 400; /* Newsreader regular */
    line-height: 1.2;
}

/* Title sizes matching Typography.Title */
.title-x4l {
    font-size: 57.36px; /* 47.8 * 1.2 */
    line-height: 72px;
}

.title-x3l {
    font-size: 47.76px; /* 39.8 * 1.2 */
    line-height: 60px;
}

.title-x2l {
    font-size: 39.84px; /* 33.2 * 1.2 */
    line-height: 50px;
}

.title-xl {
    font-size: 33.12px; /* 27.6 * 1.2 */
    line-height: 42px;
}

.title-l {
    font-size: 27.6px; /* 23 * 1.2 */
    line-height: 35px;
}

.title-m {
    font-size: 23.04px; /* 19.2 * 1.2 */
    line-height: 29px;
}

/* Body sizes matching Typography.Body */
.body-x4l {
    font-size: 57.36px;
    line-height: 72px;
}

.body-x3l {
    font-size: 47.76px;
    line-height: 60px;
}

.body-x2l {
    font-size: 39.84px;
    line-height: 50px;
}

.body-xl {
    font-size: 33.12px;
    line-height: 42px;
}

.body-l {
    font-size: 27.6px;
    line-height: 35px;
}

.body-m {
    font-size: 23.04px;
    line-height: 29px;
}

.body-s {
    font-size: 19.2px; /* 16 * 1.2 */
    line-height: 24px;
}

.body-xs {
    font-size: 15.96px; /* 13.3 * 1.2 */
    line-height: 24px;
    font-weight: 600; /* Semibold */
}

.body-x2s {
    font-size: 13.32px; /* 11.1 * 1.2 */
    line-height: 20px;
    font-weight: 700; /* Bold */
    text-transform: uppercase;
}

/* ============================================
   Container
   ============================================ */

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-l);
}

/* ============================================
   Navigation
   ============================================ */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: transparent;
    backdrop-filter: none;
    border-bottom: none;
}

.nav-hidden {
    opacity: 0;
    visibility: hidden;
}

.nav-visible {
    opacity: 1;
    visibility: visible;
    animation: navFadeIn 0.6s ease-in forwards;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-s) var(--spacing-m);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-title);
    font-size: 27.6px; /* title-l */
    color: var(--color-black);
    font-weight: 400;
}

.nav-links {
    display: flex;
    list-style: none;
    gap: var(--spacing-l);
    align-items: center;
}

.nav-links a {
    font-family: var(--font-body);
    font-size: 19.2px; /* body-m */
    color: var(--color-black);
    text-decoration: none;
    transition: opacity var(--transition-fast);
}

.nav-links a:hover {
    opacity: 0.7;
}

.nav-cta {
    padding: var(--spacing-xs) var(--spacing-m);
    background-color: var(--color-black);
    color: var(--color-white) !important;
    border-radius: var(--radius-button);
    transition: opacity var(--transition-fast), transform var(--transition-fast);
}

.nav-cta:hover {
    opacity: 0.9;
    transform: scale(0.98);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--color-black);
    transition: var(--transition-normal);
}

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

.btn {
    display: inline-block;
    font-family: var(--font-body);
    font-size: 23.04px; /* body-m */
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition-fast);
    border-radius: var(--radius-button);
    box-shadow: var(--shadow-soft);
    font-weight: 400;
}

/* Primary Button - Matches PrimaryButtonStyle from Pattern Library */
/* Solid white fill with content (text/icon) stamped/masked to show background */
.btn-primary {
    padding: var(--spacing-xs) var(--spacing-m); /* 8dp top, 24dp sides, 8dp bottom */
    position: relative;
    display: inline-block;
    background-color: var(--color-white);
    border-radius: var(--radius-button);
    box-shadow: var(--shadow-soft);
    text-decoration: none;
}

/* Gradient text that shows through white background */
.btn-primary span {
    position: relative;
    display: inline-block;
    background-image: linear-gradient(
        135deg,
        var(--gradient-blue) 0%,
        var(--gradient-pink1) 26%,
        var(--gradient-pink2) 47%,
        var(--gradient-pink3) 53%,
        var(--gradient-pink4) 84%
    );
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: var(--color-black); /* Fallback */
}

.btn-primary:hover {
    opacity: 0.9;
    transform: scale(0.98);
}

.btn-primary:active {
    opacity: 0.9;
    transform: scale(0.98);
}

/* Secondary Button - Matches SecondaryButtonStyle from Pattern Library */
/* Ghost style with white stroke, white text, transparent fill */
.btn-secondary {
    padding: var(--spacing-xs) var(--spacing-m); /* 8dp top, 24dp sides, 8dp bottom */
    background-color: transparent;
    color: var(--color-white);
    border: 1px solid var(--color-white);
    border-radius: var(--radius-button);
}

.btn-secondary:hover {
    background-color: rgba(244, 243, 238, 0.1); /* 10% white fill when hovered */
    opacity: 0.7;
    transform: scale(0.98);
}

.btn-secondary:active {
    background-color: rgba(244, 243, 238, 0.1); /* 10% white fill when pressed */
    opacity: 0.7;
    transform: scale(0.98);
}

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

.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding-top: 100px;
    padding-bottom: var(--spacing-xxl);
}

/* Hero Background with Animated Gradient */
.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -2;
    overflow: hidden;
    /* Create stacking context for watercolour layers */
    isolation: isolate;
}

/* Animated gradient background */
.hero-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    /* Animated gradient - stops will be animated via CSS custom properties */
    background: linear-gradient(
        135deg,
        var(--gradient-blue) var(--gradient-stop-0, 0%),
        var(--gradient-pink1) var(--gradient-stop-1, 26%),
        var(--gradient-pink2) var(--gradient-stop-2, 47%),
        var(--gradient-pink3) var(--gradient-stop-3, 53%),
        var(--gradient-pink4) var(--gradient-stop-4, 84%)
    );
    /* Animation for gradient stops */
    animation: gradientShift 4.5s ease-in-out infinite;
    z-index: 0;
}

@keyframes gradientShift {
    0%, 100% {
        --gradient-stop-0: 0%;
        --gradient-stop-1: 26%;
        --gradient-stop-2: 47%;
        --gradient-stop-3: 53%;
        --gradient-stop-4: 84%;
    }
    25% {
        --gradient-stop-0: 5%;
        --gradient-stop-1: 28%;
        --gradient-stop-2: 45%;
        --gradient-stop-3: 55%;
        --gradient-stop-4: 82%;
    }
    50% {
        --gradient-stop-0: 0%;
        --gradient-stop-1: 24%;
        --gradient-stop-2: 49%;
        --gradient-stop-3: 51%;
        --gradient-stop-4: 86%;
    }
    75% {
        --gradient-stop-0: 3%;
        --gradient-stop-1: 27%;
        --gradient-stop-2: 46%;
        --gradient-stop-3: 54%;
        --gradient-stop-4: 83%;
    }
}

/* Base watercolour images - using multiply blend mode */
.watercolour-layer {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    mix-blend-mode: multiply;
    will-change: transform, opacity;
    z-index: 1;
    /* Ensure proper stacking */
    isolation: isolate;
}

/* Watercolour layers for section backgrounds */
.section-background .watercolour-layer {
    z-index: 1;
}

.watercolour-1 {
    /* base-watercolour-2 */
    width: 300vw; /* 3x screen width */
    height: 300vw;
    background-image: url('../assets/images/base-watercolour-2.jpg');
    opacity: 0.7;
    animation: baseWatercolourMove 30s ease-in-out infinite,
               baseWatercolourRotate 120s linear infinite,
               baseWatercolourScale 20s ease-in-out infinite;
}

.watercolour-2 {
    /* base-watercolour-3 */
    width: 300vw;
    height: 300vw;
    background-image: url('../assets/images/base-watercolour-3.png');
    opacity: 0.8;
    animation: baseWatercolourMove2 35s ease-in-out infinite,
               baseWatercolourRotate2 150s linear infinite reverse,
               baseWatercolourScale2 25s ease-in-out infinite;
}

/* Flourish watercolour images - using softLight blend mode */
.watercolour-3 {
    /* base-watercolour-4 (flourish) */
    width: 200vw;
    height: 200vw;
    background-image: url('../assets/images/base-watercolour-4.png');
    opacity: 0.4;
    mix-blend-mode: soft-light;
    animation: flourishWatercolourMove 42s ease-in-out infinite,
               flourishWatercolourRotate 180s linear infinite,
               flourishWatercolourScale 28s ease-in-out infinite;
    z-index: 2;
}

@keyframes baseWatercolourMove {
    0%, 100% {
        transform: translate(-50%, -50%) translate(0, 0);
    }
    50% {
        transform: translate(-50%, -50%) translate(1px, 1px);
    }
}

@keyframes baseWatercolourRotate {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

@keyframes baseWatercolourScale {
    0%, 100% {
        transform: translate(-50%, -50%) scale(0.5);
    }
    50% {
        transform: translate(-50%, -50%) scale(1.5);
    }
}

@keyframes baseWatercolourMove2 {
    0%, 100% {
        transform: translate(-50%, -50%) translate(0, 0);
    }
    50% {
        transform: translate(-50%, -50%) translate(-1px, 1px);
    }
}

@keyframes baseWatercolourRotate2 {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(-360deg);
    }
}

@keyframes baseWatercolourScale2 {
    0%, 100% {
        transform: translate(-50%, -50%) scale(1);
    }
    50% {
        transform: translate(-50%, -50%) scale(1.1);
    }
}

@keyframes flourishWatercolourMove {
    0%, 100% {
        transform: translate(-50%, -50%) translate(0, 0);
    }
    50% {
        transform: translate(-50%, -50%) translate(50px, 40px);
    }
}

@keyframes flourishWatercolourRotate {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }
    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

@keyframes flourishWatercolourScale {
    0%, 100% {
        transform: translate(-50%, -50%) scale(0.5);
    }
    50% {
        transform: translate(-50%, -50%) scale(1.5);
    }
}

.hero-content {
    text-align: center;
    z-index: 1;
    max-width: 900px;
    padding: var(--spacing-xxl) var(--spacing-l);
}

.hero-logo {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 5;
    width: 240px;
    height: 240px;
    display: flex;
    align-items: center;
    justify-content: center;
    pointer-events: none;
    /* Apply blend mode to container for better Safari support */
    mix-blend-mode: overlay;
    /* Ensure it can blend with background */
    isolation: auto;
    /* Lower opacity for overlay blend mode to work properly */
    opacity: 0.5;
}

.hero-logo-hidden {
    opacity: 0;
}

.logo-stamp {
    width: 240px;
    height: 240px;
    transform: scale(0.5);
    display: block;
    /* Logo itself doesn't need blend mode - parent has it */
    opacity: 1;
}

/* Alternative approach: use CSS mask or different technique if overlay fails */
@supports not (mix-blend-mode: overlay) {
    .hero-logo {
        mix-blend-mode: screen;
        opacity: 0.8;
    }
    .logo-stamp {
        filter: invert(1);
    }
}

.hero-content {
    position: relative;
    z-index: 10;
}

.hero-title-hidden {
    opacity: 0 !important;
    visibility: hidden !important;
}

.hero-title.hero-title-visible {
    opacity: 1;
    visibility: visible;
}

/* Page load animations */
@keyframes logoFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 0.5; /* Maintain lower opacity for overlay blend mode */
    }
}

@keyframes titleFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes subtitleFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

/* Animation classes applied on page load */
.hero-logo.hero-logo-visible {
    animation: logoFadeIn 2s ease-in forwards;
    /* Ensure opacity is maintained after animation */
    opacity: 0.5;
}

.hero-title.hero-title-visible {
    visibility: visible;
    animation: titleFadeIn 1s ease-in forwards;
}

.hero-tagline.hero-tagline-visible {
    visibility: visible;
    animation: subtitleFadeIn 1s ease-in forwards;
}

.btn-get-started-hidden {
    opacity: 0 !important;
    visibility: hidden !important;
}

.btn-get-started-visible {
    opacity: 1 !important;
    visibility: visible !important;
    animation: buttonFadeIn 0.6s ease-in forwards;
}

@keyframes navFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes buttonFadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.hero-title {
    font-size: 64px; /* Larger, more premium */
    line-height: 1.15;
    color: var(--color-white);
    margin-bottom: var(--spacing-l);
    font-weight: 400;
    text-shadow: 0 2px 20px rgba(0, 0, 0, 0.1);
    letter-spacing: -0.02em;
}

.hero-tagline {
    font-family: var(--font-body);
    font-size: 23.04px; /* body-m - larger for readability */
    color: var(--color-white);
    margin-bottom: var(--spacing-xl);
    font-weight: 400;
    line-height: 1.7;
    opacity: 0.95;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.hero-tagline-hidden {
    opacity: 0 !important;
    visibility: hidden !important;
}

.hero-tagline.hero-tagline-visible {
    opacity: 0.95;
    visibility: visible;
}

/* ============================================
   Features Section
   ============================================ */

.features {
    padding: var(--spacing-xxxl) 0;
    background-color: var(--color-white);
}

.section-title {
    font-size: 57.36px; /* title-x4l - larger, more premium */
    text-align: center;
    color: var(--color-black);
    margin-bottom: var(--spacing-xxl);
    font-weight: 400;
    letter-spacing: -0.02em;
    line-height: 1.15;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xxl);
}

.feature-card {
    background-color: var(--color-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-card);
    box-shadow: var(--shadow-soft);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
    text-align: left;
    border: 1px solid rgba(35, 44, 51, 0.05);
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
}

/* Removed feature-icon - features now text-only */

.feature-title {
    font-size: 33.12px; /* title-xl - larger */
    color: var(--color-black);
    margin-bottom: var(--spacing-m);
    font-weight: 400;
    letter-spacing: -0.01em;
    line-height: 1.2;
}

.feature-description {
    font-size: 19.2px; /* body-s */
    color: var(--color-black);
    opacity: 0.75;
    line-height: 1.7;
}

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

.how-it-works {
    position: relative;
    padding: var(--spacing-xxxl) 0;
    color: var(--color-white);
    overflow: hidden;
}

.how-it-works .section-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    overflow: hidden;
    isolation: isolate;
}

.how-it-works .section-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        135deg,
        var(--gradient-blue) var(--gradient-stop-0, 0%),
        var(--gradient-pink1) var(--gradient-stop-1, 26%),
        var(--gradient-pink2) var(--gradient-stop-2, 47%),
        var(--gradient-pink3) var(--gradient-stop-3, 53%),
        var(--gradient-pink4) var(--gradient-stop-4, 84%)
    );
    animation: gradientShift 4.5s ease-in-out infinite;
    z-index: 0;
}

.how-it-works .section-title,
.how-it-works .step-title,
.how-it-works .step-description {
    color: var(--color-white);
}

.how-it-works .container {
    position: relative;
    z-index: 1;
}

.steps {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xxl);
}

.step {
    display: flex;
    gap: var(--spacing-l);
    align-items: flex-start;
}

.step-number {
    flex-shrink: 0;
    width: 72px;
    height: 72px;
    border-radius: 50%;
    background-color: var(--color-white);
    color: var(--color-black);
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-title);
    font-size: 39.84px; /* title-x2l - larger */
    font-weight: 400;
    box-shadow: var(--shadow-soft);
    transition: transform var(--transition-normal);
}

.step:hover .step-number {
    transform: scale(1.1);
}

.step-content {
    flex: 1;
}

.step-title {
    font-size: 27.6px; /* title-l */
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
    font-weight: 400;
}

.step-description {
    font-size: 19.2px; /* body-s */
    color: var(--color-white);
    opacity: 0.95;
    line-height: 1.6;
}

/* ============================================
   Approach Section
   ============================================ */

.approach {
    padding: var(--spacing-xxxl) 0;
    background-color: var(--color-white);
}

/* ============================================
   About Section
   ============================================ */

.about {
    padding: var(--spacing-xxxl) 0;
    background-color: var(--color-white);
}

.about-content {
    max-width: 900px;
    margin: 0 auto;
}

.about-text {
    font-size: 23.04px; /* body-m */
    color: var(--color-black);
    margin-bottom: var(--spacing-l);
    line-height: 1.8;
    opacity: 0.85;
}

.about-text:last-child {
    margin-bottom: 0;
}

/* ============================================
   Waitlist Section
   ============================================ */

.waitlist {
    padding: var(--spacing-xxxl) 0;
    background-color: var(--color-white);
}

.waitlist-description {
    font-size: 23.04px; /* body-m */
    color: var(--color-black);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    opacity: 0.85;
    max-width: 700px;
    margin-left: auto;
    margin-right: auto;
}

.waitlist-form-container {
    max-width: 500px;
    margin: 0 auto;
}

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

.form-group {
    display: flex;
    flex-direction: column;
}

.form-input {
    padding: var(--spacing-m) var(--spacing-l);
    font-family: var(--font-body);
    font-size: 19.2px; /* body-s */
    color: var(--color-black);
    background-color: var(--color-white);
    border: 1px solid rgba(35, 44, 51, 0.2);
    border-radius: var(--radius-button);
    transition: border-color var(--transition-normal), box-shadow var(--transition-normal);
    outline: none;
}

.form-input:focus {
    border-color: var(--color-blue);
    box-shadow: 0 0 0 3px rgba(128, 195, 229, 0.1);
}

.form-input::placeholder {
    color: rgba(35, 44, 51, 0.5);
}

.btn-waitlist {
    width: 100%;
    justify-content: center;
}

.waitlist-success {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
    padding: var(--spacing-xl);
}

.waitlist-success-title {
    font-size: 33.12px; /* title-xl */
    color: var(--color-black);
    margin-bottom: var(--spacing-m);
    font-weight: 400;
}

.waitlist-success-text {
    font-size: 19.2px; /* body-s */
    color: var(--color-black);
    opacity: 0.8;
    line-height: 1.7;
    margin-bottom: var(--spacing-l);
}

.waitlist-position {
    margin-top: var(--spacing-l);
    padding: var(--spacing-l);
    background-color: rgba(128, 195, 229, 0.1);
    border-radius: var(--radius-card);
}

.waitlist-position-text {
    font-size: 19.2px; /* body-s */
    color: var(--color-black);
    opacity: 0.9;
    margin: 0;
}

.position-number {
    font-size: 39.84px; /* title-x2l */
    font-weight: 400;
    color: var(--color-blue);
    font-family: var(--font-title);
    display: inline-block;
    margin-left: var(--spacing-xs);
}

/* ============================================
   Download Section
   ============================================ */

.download {
    position: relative;
    padding: var(--spacing-xxxl) 0;
    text-align: center;
    color: var(--color-white);
    overflow: hidden;
}

.download .section-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
    overflow: hidden;
    isolation: isolate;
}

.download .section-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(
        135deg,
        var(--gradient-blue) var(--gradient-stop-0, 0%),
        var(--gradient-pink1) var(--gradient-stop-1, 26%),
        var(--gradient-pink2) var(--gradient-stop-2, 47%),
        var(--gradient-pink3) var(--gradient-stop-3, 53%),
        var(--gradient-pink4) var(--gradient-stop-4, 84%)
    );
    animation: gradientShift 4.5s ease-in-out infinite;
    z-index: 0;
}

.download .section-title,
.download .download-description {
    color: var(--color-white);
}

.download .container {
    position: relative;
    z-index: 1;
}

.download-description {
    font-size: 23.04px; /* body-m */
    color: var(--color-white);
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.download-buttons {
    display: flex;
    justify-content: center;
    gap: var(--spacing-m);
    flex-wrap: wrap;
}

.app-store-button {
    display: inline-block;
    transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.app-store-badge {
    height: 60px;
    width: auto;
    display: block;
    /* Official Apple App Store badge SVG */
}

.app-store-button:hover {
    transform: scale(0.98);
    opacity: 0.9;
}

.app-store-button:active {
    transform: scale(0.96);
}

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

.footer {
    padding: var(--spacing-xl) 0;
    background-color: var(--color-black);
    color: var(--color-white);
    text-align: center;
}

.footer-text {
    font-size: 15.96px; /* body-xs */
    opacity: 0.8;
}

/* ============================================
   Accessibility
   ============================================ */

@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Focus styles for accessibility */
a:focus,
button:focus {
    outline: 2px solid var(--color-blue);
    outline-offset: 2px;
}

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

@media (max-width: 768px) {
    .nav-links {
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        height: 100vh;
        background-color: rgba(255, 255, 255, 0.69);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        flex-direction: column;
        padding: var(--spacing-xxl) var(--spacing-m);
        gap: var(--spacing-m);
        transform: translateX(-100%);
        transition: transform var(--transition-normal);
        z-index: 999;
    }
    
    .nav-links.active {
        transform: translateX(0);
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-title {
        font-size: 47.76px; /* title-x3l */
    }
    
    .hero-tagline {
        font-size: 19.2px; /* body-s */
    }
    
    .logo-stamp {
        width: 200px;
        height: 200px;
    }
    
    .section-title {
        font-size: 47.76px; /* title-x3l */
    }
    
    .section-title {
        font-size: 39.84px; /* title-x2l */
    }
    
    .features-grid {
        grid-template-columns: 1fr;
    }
    
    .steps {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .step {
        flex-direction: column;
        text-align: center;
    }
    
    .step-number {
        margin: 0 auto;
    }
}

@media (max-width: 640px) {
    .steps {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 39.84px; /* title-x2l */
    }
    
    .hero-tagline {
        font-size: 19.2px; /* body-s */
    }
    
    .logo-stamp {
        width: 160px;
        height: 160px;
    }
    
    .section-title {
        font-size: 39.84px; /* title-x2l */
    }
    
    .features-grid {
        gap: var(--spacing-l);
    }
    
    .steps {
        gap: var(--spacing-l);
    }
    
    .section-title {
        font-size: 33.12px; /* title-xl */
    }
    
    .container {
        padding: 0 var(--spacing-s);
    }
}