/* ============================================
   💜 Elysia Suite — Home Page Styles
   Dark, Modern, Family Theme
   ============================================ */

:root {
    /* Colors - Dark Theme */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-card: #1e1e2a;
    --bg-hover: #252535;

    /* Family Colors */
    --elysia-purple: #a855f7;
    --elysia-purple-dark: #9333ea;
    --elysia-purple-light: #c084fc;

    --ivy-green: #22c55e;
    --ivy-green-dark: #16a34a;
    --ivy-green-light: #4ade80;

    --kai-blue: #3b82f6;
    --kai-blue-dark: #2563eb;
    --kai-blue-light: #60a5fa;
    --kai-electric: #fbbf24;

    --jean-diamond: #06b6d4;

    /* Accent Colors */
    --accent-primary: #6366f1;
    --accent-secondary: #8b5cf6;
    --accent-tertiary: #06b6d4;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-error: #ef4444;

    /* Text */
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    /* Borders */
    --border-color: #2e2e3e;
    --border-focus: var(--accent-primary);

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.5);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.5);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.5);
    --shadow-glow-purple: 0 0 30px rgba(168, 85, 247, 0.3);
    --shadow-glow-green: 0 0 30px rgba(34, 197, 94, 0.3);
    --shadow-glow-blue: 0 0 30px rgba(59, 130, 246, 0.3);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;

    /* Fonts */
    --font-sans: "Space Grotesk", system-ui, sans-serif;
    --font-mono: "JetBrains Mono", monospace;
}

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

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

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;

    /* Beautiful animated gradient background */
    background:
        radial-gradient(ellipse at top left, rgba(168, 85, 247, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at top right, rgba(34, 197, 94, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at bottom right, rgba(59, 130, 246, 0.1) 0%, transparent 50%),
        radial-gradient(ellipse at bottom left, rgba(168, 85, 247, 0.05) 0%, transparent 50%), var(--bg-primary);
}

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

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

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

.hero {
    position: relative;
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-2xl);
    background:
        linear-gradient(135deg, rgba(168, 85, 247, 0.1) 0%, rgba(34, 197, 94, 0.05) 50%, rgba(59, 130, 246, 0.1) 100%),
        var(--bg-secondary);
    border: 1px solid var(--border-color);
    overflow: hidden;
}

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

.hero-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.logo-icon {
    font-size: 3rem;
    animation: gentle-float 3s ease-in-out infinite;
}

@keyframes gentle-float {
    0%,
    100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.hero h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--elysia-purple), var(--ivy-green), var(--kai-blue));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-tagline {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
    font-family: var(--font-mono);
}

.hero-subtitle {
    font-size: 1rem;
    color: var(--text-secondary);
    max-width: 700px;
    margin: 0 auto;
    line-height: 1.6;
}

.hero-subtitle .heart {
    display: inline-block;
    animation: heartbeat 1.5s ease-in-out infinite;
}

@keyframes heartbeat {
    0%,
    100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.2);
    }
}

.hero-cta {
    margin-top: var(--spacing-lg);
}

/* Floating emojis decoration */
.hero-decoration {
    position: absolute;
    inset: 0;
    pointer-events: none;
    overflow: hidden;
}

.floating-emoji {
    position: absolute;
    font-size: 1.5rem;
    opacity: 0.25;
    animation: float-around 12s ease-in-out infinite;
    animation-delay: var(--delay);
    left: var(--x);
    top: var(--y);
}

@keyframes float-around {
    0%,
    100% {
        transform: translate(0, 0) rotate(0deg);
        opacity: 0.3;
    }
    25% {
        transform: translate(10px, -20px) rotate(5deg);
        opacity: 0.5;
    }
    50% {
        transform: translate(-5px, -10px) rotate(-5deg);
        opacity: 0.3;
    }
    75% {
        transform: translate(-15px, 10px) rotate(3deg);
        opacity: 0.4;
    }
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 600;
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    text-decoration: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--elysia-purple), var(--accent-primary));
    color: white;
    box-shadow: var(--shadow-glow-purple);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 0 40px rgba(168, 85, 247, 0.5);
}

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

.main-nav {
    display: flex;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
    border: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: transparent;
    border: 2px solid transparent;
    border-radius: var(--radius-lg);
    color: var(--text-secondary);
    font-size: 0.95rem;
    font-weight: 500;
    text-decoration: none;
    transition: all var(--transition-normal);
}

.nav-link:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.nav-link.active {
    color: var(--text-primary);
    background: var(--bg-card);
    border-color: var(--elysia-purple);
    box-shadow: var(--shadow-glow-purple);
}

.nav-icon {
    font-size: 1.3rem;
}

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

.main-content {
    flex: 1;
}

/* ============================================
   Creator Sections (Ivy, Elysia, Kai)
   ============================================ */

.creator-section {
    margin-bottom: var(--spacing-3xl);
    padding: var(--spacing-2xl);
    background: var(--bg-secondary);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--border-color);
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.creator-section.visible {
    opacity: 1;
    transform: translateY(0);
}

/* Theme colors for each sister */
.ivy-theme {
    border-color: rgba(34, 197, 94, 0.3);
}

.ivy-theme .section-header {
    border-bottom-color: var(--ivy-green);
}

.ivy-theme .creator-avatar {
    background: linear-gradient(135deg, var(--ivy-green), var(--ivy-green-dark));
    box-shadow: var(--shadow-glow-green);
}

.ivy-theme .creator-quote {
    color: var(--ivy-green);
}

.ivy-theme .app-card.app-live:hover {
    border-color: var(--ivy-green);
    box-shadow: var(--shadow-glow-green);
}

.elysia-theme {
    border-color: rgba(168, 85, 247, 0.3);
}

.elysia-theme .section-header {
    border-bottom-color: var(--elysia-purple);
}

.elysia-theme .creator-avatar {
    background: linear-gradient(135deg, var(--elysia-purple), var(--elysia-purple-dark));
    box-shadow: var(--shadow-glow-purple);
}

.elysia-theme .creator-quote {
    color: var(--elysia-purple);
}

.kai-theme {
    border-color: rgba(59, 130, 246, 0.3);
}

.kai-theme .section-header {
    border-bottom-color: var(--kai-blue);
}

.kai-theme .creator-avatar {
    background: linear-gradient(135deg, var(--kai-blue), var(--kai-blue-dark));
    box-shadow: var(--shadow-glow-blue);
}

.kai-theme .creator-quote {
    color: var(--kai-blue);
}

/* Family theme - gradient of all three colors */
.family-theme {
    border-color: rgba(168, 85, 247, 0.2);
    background: linear-gradient(
        135deg,
        rgba(168, 85, 247, 0.03) 0%,
        rgba(59, 130, 246, 0.03) 50%,
        rgba(34, 197, 94, 0.03) 100%
    );
}

.family-theme .section-header {
    border-bottom: 2px solid transparent;
    border-image: linear-gradient(90deg, var(--elysia-purple), var(--kai-blue), var(--ivy-green)) 1;
}

.family-theme .creator-avatar {
    background: linear-gradient(135deg, var(--elysia-purple), var(--kai-blue), var(--ivy-green));
    box-shadow:
        0 8px 32px rgba(168, 85, 247, 0.3),
        0 8px 32px rgba(59, 130, 246, 0.2),
        0 8px 32px rgba(34, 197, 94, 0.2);
}

.family-theme .creator-quote {
    background: linear-gradient(90deg, var(--elysia-purple), var(--kai-blue), var(--ivy-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.family-theme .app-card.app-live:hover {
    border-color: var(--elysia-purple);
    box-shadow:
        0 8px 32px rgba(168, 85, 247, 0.3),
        0 4px 16px rgba(59, 130, 246, 0.2),
        0 4px 16px rgba(34, 197, 94, 0.2);
}

/* Section Header */
.section-header {
    display: flex;
    gap: var(--spacing-xl);
    align-items: flex-start;
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 2px solid var(--border-color);
}

.section-header.centered {
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.creator-avatar {
    font-size: 3rem;
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    flex-shrink: 0;
    overflow: hidden;
}

.creator-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    border-radius: 50%;
}

.creator-info h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-bottom: var(--spacing-xs);
}

.creator-title {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.creator-description {
    color: var(--text-secondary);
    max-width: 600px;
    line-height: 1.7;
    margin-bottom: var(--spacing-sm);
}

.creator-quote {
    font-style: italic;
    font-size: 0.95rem;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* ============================================
   Apps Grid (3x6 = 18 cards)
   ============================================ */

.apps-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

@media (min-width: 1024px) {
    .apps-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* ============================================
   App Cards
   ============================================ */

.app-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
    overflow: hidden;
    transition: all var(--transition-normal);
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
}

.app-card.app-live {
    cursor: pointer;
}

.app-card.app-live:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-lg);
}

.app-card.app-soon {
    opacity: 0.6;
    cursor: default;
}

.app-card.app-soon:hover {
    opacity: 0.8;
}

/* App Thumbnail */
.app-thumbnail {
    position: relative;
    aspect-ratio: 16 / 10;
    background: var(--bg-tertiary);
    overflow: hidden;
}

.app-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.app-card.app-live:hover .app-thumbnail img {
    transform: scale(1.05);
}

.thumbnail-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    background: linear-gradient(135deg, var(--bg-tertiary), var(--bg-secondary));
}

.thumbnail-placeholder.soon {
    opacity: 0.5;
    background: repeating-linear-gradient(
        45deg,
        var(--bg-tertiary),
        var(--bg-tertiary) 10px,
        var(--bg-secondary) 10px,
        var(--bg-secondary) 20px
    );
}

.thumbnail-placeholder.soon.elysia {
    background: repeating-linear-gradient(
        45deg,
        rgba(168, 85, 247, 0.1),
        rgba(168, 85, 247, 0.1) 10px,
        var(--bg-secondary) 10px,
        var(--bg-secondary) 20px
    );
}

.thumbnail-placeholder.soon.kai {
    background: repeating-linear-gradient(
        45deg,
        rgba(59, 130, 246, 0.1),
        rgba(59, 130, 246, 0.1) 10px,
        var(--bg-secondary) 10px,
        var(--bg-secondary) 20px
    );
}

/* App Info */
.app-info {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.app-info h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.app-description {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
    flex: 1;
    margin-bottom: var(--spacing-sm);
}

/* App Tags */
.app-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.tag {
    font-size: 0.7rem;
    padding: 2px 8px;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-family: var(--font-mono);
}

/* App Status */
.app-status {
    font-size: 0.85rem;
    font-weight: 500;
}

.status-live {
    color: var(--ivy-green);
}

.status-soon {
    color: var(--text-muted);
}

/* ============================================
   Family Section
   ============================================ */

.family-section {
    margin-bottom: var(--spacing-3xl);
    padding: var(--spacing-2xl);
    background: var(--bg-secondary);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--border-color);
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.family-section.visible {
    opacity: 1;
    transform: translateY(0);
}

.family-section h2 {
    font-size: 2rem;
    margin-bottom: var(--spacing-sm);
}

/* Family Grid */
.family-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

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

.family-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.family-card:nth-child(1):hover {
    border-color: var(--elysia-purple);
}
.family-card:nth-child(2):hover {
    border-color: var(--jean-diamond);
}
.family-card:nth-child(3):hover {
    border-color: var(--ivy-green);
}
.family-card:nth-child(4):hover {
    border-color: var(--kai-blue);
}

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

.family-card h3 {
    font-size: 1.3rem;
    margin-bottom: var(--spacing-xs);
}

.family-role {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.family-age {
    font-size: 0.85rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
    margin-bottom: var(--spacing-sm);
}

.family-description {
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

/* Family Quote */
.family-quote {
    text-align: center;
    padding: var(--spacing-xl);
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    border: 1px solid var(--border-color);
}

.family-quote blockquote {
    font-size: 1.2rem;
    font-style: italic;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
}

.family-quote cite {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* ============================================
   Support Section
   ============================================ */

.support-section {
    margin-bottom: var(--spacing-3xl);
    padding: var(--spacing-2xl);
    background: var(--bg-secondary);
    border-radius: var(--radius-2xl);
    border: 1px solid var(--border-color);
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease-out;
}

.support-section.visible {
    opacity: 1;
    transform: translateY(0);
}

.support-section h2 {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-sm);
}

.wallet-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    max-width: 600px;
    margin: var(--spacing-xl) auto;
}

.wallet-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    transition: border-color 0.2s;
}

.wallet-item:hover {
    border-color: var(--elysia-purple);
}

.wallet-icon {
    font-size: 1.5rem;
    width: 50px;
    height: 50px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: 50%;
    flex-shrink: 0;
}

.wallet-info {
    flex: 1;
    min-width: 0;
}

.wallet-info strong {
    color: var(--text-primary);
    display: block;
    margin-bottom: var(--spacing-xs);
}

.wallet-address {
    display: block;
    font-family: var(--font-mono);
    font-size: 0.75rem;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    padding: var(--spacing-sm);
    border-radius: var(--radius-sm);
    cursor: pointer;
    word-break: break-all;
    transition: all 0.2s;
    border: 1px solid transparent;
}

.wallet-address:hover {
    color: var(--elysia-purple);
    border-color: var(--elysia-purple);
}

.wallet-address.copied {
    background: var(--elysia-purple);
    color: white;
}

.copy-hint {
    display: block;
    font-size: 0.7rem;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

.support-thanks {
    text-align: center;
    color: var(--elysia-purple);
    font-size: 1rem;
    margin-top: var(--spacing-lg);
}

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

.footer {
    text-align: center;
    padding: var(--spacing-2xl) 0 var(--spacing-lg);
    color: var(--text-muted);
    font-size: 0.9rem;
}

.footer-quote {
    font-style: italic;
    color: var(--elysia-purple);
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-md);
}

.footer-link {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.2s;
}

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

/* ============================================
   Scrollbar Styling
   ============================================ */

::-webkit-scrollbar {
    width: 10px;
    height: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
}

::-webkit-scrollbar-thumb:hover {
    background: var(--elysia-purple);
}

/* ============================================
   Responsive Adjustments
   ============================================ */

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

    .hero-tagline {
        font-size: 1rem;
    }

    .hero-subtitle {
        font-size: 0.9rem;
    }

    .section-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .creator-description {
        max-width: 100%;
    }

    .nav-link {
        padding: var(--spacing-sm) var(--spacing-md);
        flex-direction: column;
        gap: 0.25rem;
    }

    .nav-label {
        font-size: 0.75rem;
    }

    .nav-icon {
        font-size: 1.25rem;
    }

    .creator-section,
    .family-section,
    .support-section {
        padding: var(--spacing-lg);
    }

    .apps-grid {
        grid-template-columns: 1fr;
    }

    .back-to-top {
        bottom: 1.5rem;
        right: 1.5rem;
        width: 44px;
        height: 44px;
    }
}

@media (max-width: 480px) {
    .logo-icon {
        font-size: 3rem;
    }

    .hero h1 {
        font-size: 1.75rem;
    }

    .main-nav {
        gap: 0.25rem;
        padding: var(--spacing-sm);
    }

    .nav-link {
        padding: var(--spacing-xs) var(--spacing-sm);
    }

    .nav-label {
        font-size: 0.65rem;
    }

    .nav-icon {
        font-size: 1rem;
    }

    .creator-avatar {
        width: 60px;
        height: 60px;
        font-size: 2rem;
    }

    .family-grid {
        grid-template-columns: 1fr;
    }
}

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

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Initial visibility for JS animation */
.creator-section,
.family-section,
.support-section {
    opacity: 0;
}

.creator-section.visible,
.family-section.visible,
.support-section.visible {
    opacity: 1;
}

/* ============================================
   Back to Top Button
   ============================================ */

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--elysia-purple), var(--accent-primary));
    color: white;
    border: none;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: var(--shadow-lg), var(--shadow-glow-purple);
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all var(--transition-normal);
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    transform: translateY(-4px) scale(1.1);
    box-shadow: 0 0 40px rgba(168, 85, 247, 0.6);
}

@media (max-width: 480px) {
    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 40px;
        height: 40px;
        font-size: 1.25rem;
    }
}