/* =========================================
   ScienceApp - Ultra Premium UI Styles
   ========================================= */

@import url('https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700&family=Montserrat:wght@500;600;700;800;900&display=swap');

/* --- CSS Variables & Themes --- */
:root {
    /* СВЕТЛАЯ ТЕМА (Apple-like / Modern SaaS) */
    --bg-base: #f4f5f7;
    --bg-surface: rgba(255, 255, 255, 0.65);
    --bg-surface-hover: rgba(255, 255, 255, 0.9);
    --bg-card: rgba(255, 255, 255, 0.8);
    
    --text-primary: #0f172a;
    --text-secondary: #64748b;
    --border-color: rgba(15, 23, 42, 0.08);
    --border-highlight: rgba(255, 255, 255, 0.5);
    
    --accent-primary: #2563eb;
    --accent-hover: #1d4ed8;
    --gradient-primary: linear-gradient(135deg, #2563eb, #8b5cf6);
    --gradient-text: linear-gradient(135deg, #2563eb, #7c3aed);
    
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.03);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.08);
    --shadow-glow: 0 0 30px rgba(37, 99, 235, 0.25);
    
    --glass-blur: blur(20px);
    
    --orb-1: #dbeafe;
    --orb-2: #ede9fe;
    --orb-3: #fce7f3;

    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Manrope', sans-serif;
}

[data-theme="dark"] {
    /* ТЕМНАЯ ТЕМА (Premium Deep Space) */
    --bg-base: #020617;
    --bg-surface: rgba(15, 23, 42, 0.5);
    --bg-surface-hover: rgba(30, 41, 59, 0.7);
    --bg-card: rgba(15, 23, 42, 0.6);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --border-color: rgba(255, 255, 255, 0.08);
    --border-highlight: rgba(255, 255, 255, 0.15);
    
    --accent-primary: #3b82f6;
    --accent-hover: #60a5fa;
    --gradient-primary: linear-gradient(135deg, #3b82f6, #a855f7);
    --gradient-text: linear-gradient(135deg, #60a5fa, #c084fc);
    
    --shadow-sm: 0 4px 12px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 20px 40px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 30px rgba(59, 130, 246, 0.4);

    --orb-1: rgba(29, 78, 216, 0.15);
    --orb-2: rgba(126, 34, 206, 0.15);
    --orb-3: rgba(190, 24, 93, 0.1);
}

/* --- Цветовые акценты (Светлая тема) --- */
[data-color="blue"] {
    --accent-primary: #0284c7;
    --accent-hover: #0369a1;
    --gradient-primary: linear-gradient(135deg, #0ea5e9, #2563eb);
    --gradient-text: linear-gradient(135deg, #0ea5e9, #2563eb);
    --shadow-glow: 0 0 30px rgba(14, 165, 233, 0.25);
    --orb-1: #e0f2fe;
    --orb-2: #dbeafe;
    --orb-3: #bae6fd;
}

[data-color="green"] {
    --accent-primary: #059669;
    --accent-hover: #047857;
    --gradient-primary: linear-gradient(135deg, #10b981, #059669);
    --gradient-text: linear-gradient(135deg, #10b981, #047857);
    --shadow-glow: 0 0 30px rgba(16, 185, 129, 0.25);
    --orb-1: #d1fae5;
    --orb-2: #ecfdf5;
    --orb-3: #a7f3d0;
}

[data-color="red"] {
    --accent-primary: #dc2626;
    --accent-hover: #b91c1c;
    --gradient-primary: linear-gradient(135deg, #ef4444, #dc2626);
    --gradient-text: linear-gradient(135deg, #ef4444, #b91c1c);
    --shadow-glow: 0 0 30px rgba(239, 68, 68, 0.25);
    --orb-1: #fee2e2;
    --orb-2: #fef2f2;
    --orb-3: #fecaca;
}

[data-color="orange"] {
    --accent-primary: #ea580c;
    --accent-hover: #c2410c;
    --gradient-primary: linear-gradient(135deg, #f97316, #ea580c);
    --gradient-text: linear-gradient(135deg, #f97316, #c2410c);
    --shadow-glow: 0 0 30px rgba(249, 115, 22, 0.25);
    --orb-1: #ffedd5;
    --orb-2: #fff7ed;
    --orb-3: #fed7aa;
}

/* --- Цветовые акценты (Темная тема) --- */
[data-theme="dark"][data-color="blue"] {
    --accent-primary: #38bdf8;
    --accent-hover: #7dd3fc;
    --gradient-primary: linear-gradient(135deg, #0ea5e9, #3b82f6);
    --gradient-text: linear-gradient(135deg, #38bdf8, #60a5fa);
    --shadow-glow: 0 0 30px rgba(14, 165, 233, 0.4);
    --orb-1: rgba(14, 165, 233, 0.15);
    --orb-2: rgba(59, 130, 246, 0.15);
    --orb-3: rgba(2, 132, 199, 0.1);
}

[data-theme="dark"][data-color="green"] {
    --accent-primary: #34d399;
    --accent-hover: #6ee7b7;
    --gradient-primary: linear-gradient(135deg, #10b981, #34d399);
    --gradient-text: linear-gradient(135deg, #34d399, #6ee7b7);
    --shadow-glow: 0 0 30px rgba(52, 211, 153, 0.4);
    --orb-1: rgba(16, 185, 129, 0.15);
    --orb-2: rgba(5, 150, 105, 0.15);
    --orb-3: rgba(4, 120, 87, 0.1);
}

[data-theme="dark"][data-color="red"] {
    --accent-primary: #f87171;
    --accent-hover: #fca5a5;
    --gradient-primary: linear-gradient(135deg, #ef4444, #f87171);
    --gradient-text: linear-gradient(135deg, #f87171, #fca5a5);
    --shadow-glow: 0 0 30px rgba(248, 113, 113, 0.4);
    --orb-1: rgba(239, 68, 68, 0.15);
    --orb-2: rgba(220, 38, 38, 0.15);
    --orb-3: rgba(185, 28, 28, 0.1);
}

[data-theme="dark"][data-color="orange"] {
    --accent-primary: #fb923c;
    --accent-hover: #fdba74;
    --gradient-primary: linear-gradient(135deg, #f97316, #fb923c);
    --gradient-text: linear-gradient(135deg, #fb923c, #fdba74);
    --shadow-glow: 0 0 30px rgba(251, 146, 60, 0.4);
    --orb-1: rgba(249, 115, 22, 0.15);
    --orb-2: rgba(234, 88, 12, 0.15);
    --orb-3: rgba(194, 65, 12, 0.1);
}
/* --- Base --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background-color: var(--bg-base);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    transition: background-color 0.5s ease, color 0.5s ease;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 800;
    line-height: 1.2;
}

a {
    text-decoration: none;
    color: inherit;
}

.fw-bold {
    font-weight: 700;
}

/* --- Ambient Background --- */
.ambient-bg {
    position: fixed;
    inset: 0;
    z-index: -2;
    overflow: hidden;
    pointer-events: none;
}

.ambient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    opacity: 0.8;
    animation: floatOrb 25s infinite ease-in-out alternate;
}

.orb-1 {
    top: -20%; left: -10%;
    width: 60vw; height: 60vw;
    background: var(--orb-1);
}
.orb-2 {
    bottom: -20%; right: -10%;
    width: 70vw; height: 70vw;
    background: var(--orb-2);
    animation-delay: -5s;
    animation-direction: alternate-reverse;
}
.orb-3 {
    top: 40%; left: 40%;
    width: 40vw; height: 40vw;
    background: var(--orb-3);
    animation-delay: -10s;
}

.grid-overlay {
    position: absolute;
    inset: 0;
    background-image: linear-gradient(var(--border-color) 1px, transparent 1px),
                      linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
    background-size: 50px 50px;
    opacity: 0.3;
    mask-image: radial-gradient(circle at center, black, transparent 80%);
    -webkit-mask-image: radial-gradient(circle at center, black, transparent 80%);
}

@keyframes floatOrb {
    0% { transform: translate(0, 0) scale(1); }
    100% { transform: translate(10%, 15%) scale(1.1); }
}

#particles-canvas {
    position: fixed;
    inset: 0;
    z-index: -1;
    pointer-events: none;
}

/* --- Glassmorphism Utils --- */
.glass-card {
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    box-shadow: inset 0 1px 0 var(--border-highlight), var(--shadow-md);
}

/* --- Navbar --- */
.navbar-wrapper {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    display: flex;
    justify-content: center;
    z-index: 100;
    padding: 1.5rem 2rem;
    background: transparent;
    border-bottom: 1px solid transparent;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.navbar-wrapper.scrolled {
    padding: 1rem 2rem;
    background: var(--bg-surface);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-md);
}

.navbar-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
    max-width: 1200px;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.brand-icon-wrapper {
    width: 36px; height: 36px;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.brand-icon {
    width: 100%; height: 100%;
    object-fit: cover;
}

.brand-text {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 800;
    letter-spacing: -0.5px;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links {
    display: flex;
    gap: 2.5rem;
    margin-left: auto;
    margin-right: 2.5rem;
}

.nav-link {
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-secondary);
    transition: color 0.2s ease;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px; left: 0;
    width: 0%; height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
    border-radius: 2px;
}

.nav-link:hover {
    color: var(--text-primary);
}
.nav-link:hover::after { width: 100%; }

.nav-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.nav-btn {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    cursor: pointer;
    width: 38px; height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

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

/* Custom Lang Dropdown */
.lang-dropdown-wrapper {
    position: relative;
}

.lang-btn {
    width: auto;
    border-radius: 20px;
    padding: 0 0.75rem;
    gap: 0.4rem;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.9rem;
}

.chevron {
    transition: transform 0.3s ease;
}

.lang-dropdown-wrapper.active .chevron {
    transform: rotate(180deg);
}

.lang-menu {
    position: absolute;
    top: calc(100% + 0.5rem);
    right: 0;
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 0.5rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    min-width: 120px;
}

.lang-dropdown-wrapper.active .lang-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.lang-option {
    display: block;
    width: 100%;
    text-align: left;
    padding: 0.6rem 1rem;
    background: transparent;
    border: none;
    border-radius: 8px;
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.lang-option:hover, .lang-option.active {
    background: var(--bg-surface-hover);
    color: var(--text-primary);
}

.btn-nav-gradient {
    background: var(--gradient-primary);
    color: #fff;
    padding: 0.5rem 1.25rem;
    border-radius: 100px;
    font-weight: 700;
    font-size: 0.9rem;
    transition: transform 0.2s, box-shadow 0.2s;
    border: none;
}
.btn-nav-gradient:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.mobile-only { display: none; }

.mobile-nav {
    position: fixed;
    top: 5rem;
    left: 1rem;
    right: 1rem;
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    display: flex;
    flex-direction: column;
    padding: 1.5rem;
    gap: 1rem;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-20px);
    transition: all 0.3s ease;
}

.mobile-nav.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mobile-link {
    font-size: 1.1rem;
    font-weight: 600;
    padding: 0.75rem;
    border-radius: 12px;
    text-align: center;
    background: var(--bg-surface);
}

/* --- Hero Section --- */
.hero-section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 16rem 2rem 4rem;
    text-align: center;
    position: relative;
}

.badge-new {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 0.5rem 1rem;
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 2rem;
    backdrop-filter: var(--glass-blur);
    box-shadow: var(--shadow-sm);
}

.badge-dot {
    width: 8px; height: 8px;
    background: #10b981;
    border-radius: 50%;
    box-shadow: 0 0 10px #10b981;
}

.hero-title {
    font-size: clamp(3.5rem, 8vw, 6rem);
    letter-spacing: -2px;
    margin-bottom: 1.5rem;
    line-height: 1.1;
}

.gradient-text {
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto 3.5rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: #fff;
    border: none;
    padding: 1.2rem 2.5rem;
    font-size: 1.1rem;
    font-weight: 700;
    border-radius: 100px;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.btn-primary:not(:disabled):hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: var(--shadow-glow);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    filter: grayscale(1);
}

.btn-icon-right {
    width: 20px; height: 20px;
    transition: transform 0.3s ease;
}
.btn-primary:not(:disabled):hover .btn-icon-right {
    transform: translateX(4px);
}

.download-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.25rem;
    margin-top: 2rem;
}

.download-meta {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: 100px;
    font-size: 0.9rem;
    color: var(--text-secondary);
    text-align: center;
}

.dot-separator {
    display: inline-block;
    width: 5px; height: 5px;
    background: var(--text-secondary);
    border-radius: 50%;
    margin: 0 0.75rem;
    opacity: 0.5;
    vertical-align: middle;
}

.hero-visual {
    margin-top: 4rem;
    width: 100%;
    max-width: 1000px;
}

.mockup-frame {
    border-radius: 6px;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), box-shadow 0.4s ease;
    border: 1px solid var(--border-color);
}

.mockup-frame:hover {
    transform: scale(1.03);
    box-shadow: var(--shadow-glow);
}

.mockup-image {
    width: 100%;
    display: block;
}

/* --- Features Section --- */
.features-section {
    padding: 8rem 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.section-header {
    text-align: center;
    margin-bottom: 5rem;
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    margin-bottom: 1rem;
    letter-spacing: -1px;
    background: var(--gradient-text);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.section-subtitle {
    font-size: 1.2rem;
    color: var(--text-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-card);
    background-image: linear-gradient(135deg, var(--orb-1) 0%, transparent 100%);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    border-radius: 28px;
    padding: 2.5rem;
    transition: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    box-shadow: inset 0 1px 0 var(--border-highlight), var(--shadow-sm);
    position: relative;
    overflow: hidden;
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-lg), var(--shadow-glow);
    border-color: var(--accent-primary);
}

.feature-icon-wrapper {
    width: 64px; height: 64px;
    border-radius: 20px;
    background: var(--gradient-primary);
    border: none;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    box-shadow: var(--shadow-glow);
}

.feature-icon {
    width: 32px; height: 32px;
    filter: brightness(0) invert(1) !important;
}

.feature-title {
    font-size: 1.3rem;
    margin-bottom: 1rem;
}

.feature-desc {
    color: var(--text-secondary);
    font-size: 1rem;
    line-height: 1.6;
}

/* --- CTA Section --- */
.cta-section {
    padding: 4rem 2rem 8rem;
    max-width: 900px;
    margin: 0 auto;
}

.cta-box {
    border-radius: 40px;
    padding: 5rem 2rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.cta-box::after {
    content: '';
    position: absolute;
    top: -50%; left: -50%;
    width: 200%; height: 200%;
    background: radial-gradient(circle, var(--orb-1) 0%, transparent 60%);
    z-index: -1;
    pointer-events: none;
}

.cta-title {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    letter-spacing: -1px;
}

.cta-description {
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    font-size: 1.2rem;
    max-width: 600px;
    margin-left: auto; margin-right: auto;
}

/* --- Support Section --- */
.support-section {
    padding: 4rem 2rem 8rem;
    max-width: 800px;
    margin: 0 auto;
}

.faq-list {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.faq-card {
    background: transparent;
    border: 1px solid transparent;
    border-bottom: 1px solid var(--border-color);
    border-radius: 0;
    padding: 1.5rem 2rem;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.faq-card:last-child {
    border-bottom-color: transparent;
}

.faq-card:hover, .faq-card.expanded {
    background: var(--bg-card);
    background-image: linear-gradient(135deg, transparent 0%, var(--orb-2) 100%);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border-color: var(--accent-primary);
    border-radius: 24px;
    box-shadow: var(--shadow-md), inset 0 1px 0 var(--border-highlight), var(--shadow-glow);
    transform: scale(1.02);
}

.faq-card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-title {
    font-weight: 700;
    font-size: 1.1rem;
    padding-right: 1rem;
}

.faq-icon-arrow {
    stroke: var(--text-secondary);
    transition: transform 0.3s ease, stroke 0.3s ease;
}

.faq-card:hover .faq-icon-arrow {
    stroke: var(--accent-primary);
}

.faq-card-body {
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: all 0.4s ease;
    margin-top: 0;
}

.faq-text {
    color: var(--text-secondary);
    line-height: 1.6;
}

.faq-card.expanded .faq-card-body {
    max-height: 500px;
    opacity: 1;
    margin-top: 1.5rem;
}

.faq-card.expanded .faq-icon-arrow {
    transform: rotate(180deg);
    stroke: var(--accent-primary);
}

/* --- Premium Footer --- */
.modern-footer {
    border-top: 1px solid var(--border-color);
    background: linear-gradient(to bottom, transparent, var(--bg-surface));
    backdrop-filter: var(--glass-blur);
    padding: 4rem 2rem 2rem;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: 3rem;
}

.center-footer {
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: 1.5rem;
}

.center-footer .brand-logo {
    margin-bottom: 0;
}



.footer-badges {
    display: flex;
    align-items: center;
}

.made-in-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 100px;
}

.flag-icon, .heart-icon {
    width: 20px; height: 20px;
    object-fit: contain;
}



/* --- Scroll To Top --- */
.scroll-to-top {
    position: fixed;
    bottom: 2rem; right: 2rem;
    width: 56px; height: 56px;
    border-radius: 50%;
    background: var(--bg-card);
    backdrop-filter: var(--glass-blur);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transform: translateY(20px);
    transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    z-index: 90;
}

.scroll-to-top.visible {
    opacity: 1;
    pointer-events: all;
    transform: translateY(0);
}

.scroll-to-top:hover {
    transform: translateY(-5px) scale(1.1);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* --- Animations --- */
.animate-on-scroll {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s cubic-bezier(0.16, 1, 0.3, 1), transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.animate-on-scroll.visible {
    opacity: 1;
    transform: translateY(0);
}

.delay-100 { transition-delay: 100ms; }
.delay-200 { transition-delay: 200ms; }
.delay-300 { transition-delay: 300ms; }
.delay-400 { transition-delay: 400ms; }

/* --- Responsive --- */
@media (max-width: 900px) {
    .nav-links, .nav-cta { display: none; }
    .mobile-only { display: flex; }
    .navbar-wrapper { padding: 1rem; }
    
    .footer-container {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }
}