/* --- CSS Variables & Theming --- */
:root {
    --bg-color: #F4F5F9;
    --text-primary: #111827;
    --text-secondary: #6B7280;
    --card-bg: #FFFFFF;

    --accent-blue: #007AFF;
    --accent-blue-hover: #0066D6;
    --accent-blue-soft: #E5F0FF;

    --brand-blue: #3A86FF;
    --brand-purple: #8338EC;
    --brand-teal: #22c55e;
    --brand-orange: #f59e0b;

    --border-color: rgba(0, 0, 0, 0.05);

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.05);
    --shadow-lg: 0 12px 24px rgba(0, 0, 0, 0.08);

    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-xl: 28px;

    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
    padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-fast);
    -webkit-tap-highlight-color: transparent;
}

input,
select,
textarea {
    font-size: 16px !important;
}

h1, h2, h3, h4 {
    letter-spacing: -0.02em;
    font-weight: 700;
    line-height: 1.2;
}

/* --- Layout & Utilities --- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.container-sm {
    max-width: 800px;
}

.grid {
    display: grid;
    gap: 24px;
}

.highlight {
    background: linear-gradient(135deg, var(--brand-blue), var(--brand-purple));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* --- Glassmorphism --- */
.glass {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-weight: 600;
    border-radius: 999px;
    transition: all var(--transition-fast);
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--accent-blue);
    color: white;
    box-shadow: 0 4px 14px rgba(0, 122, 255, 0.3);
}

.btn-primary:hover {
    background-color: var(--accent-blue-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 122, 255, 0.4);
}

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

.btn-secondary:hover {
    background: var(--accent-blue);
    color: white;
    transform: translateY(-2px);
}

.small-btn {
    padding: 8px 16px;
    font-size: 0.9rem;
}

.large-btn {
    padding: 16px 32px;
    font-size: 1.1rem;
}

/* --- Navigation --- */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    height: 72px;
    display: flex;
    align-items: center;
}

.nav-container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 700;
    font-size: 1.25rem;
}

.logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--accent-blue);
    color: white;
    border-radius: 10px;
}

.nav-links {
    display: flex;
    gap: 32px;
    font-weight: 500;
}

.nav-links a:hover {
    color: var(--accent-blue);
}

/* --- Hero Section --- */
.hero {
    position: relative;
    padding: 160px 24px 100px;
    text-align: center;
    overflow: hidden;
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-content {
    position: relative;
    z-index: 10;
    max-width: 800px;
    margin: 0 auto;
}

.badge {
    display: inline-block;
    padding: 6px 14px;
    background: rgba(34, 197, 94, 0.1);
    color: #16a34a;
    border-radius: 999px;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 24px;
}

.hero h1 {
    font-size: clamp(3rem, 6vw, 5rem);
    margin-bottom: 24px;
    color: #000;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.35rem);
    color: var(--text-secondary);
    margin-bottom: 48px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
    flex-wrap: wrap;
}

/* Hero Background Glows */
.glow-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    z-index: 1;
    opacity: 0.5;
}

.orb-1 {
    width: 400px;
    height: 400px;
    background: rgba(58, 134, 255, 0.3);
    top: -100px;
    left: 10%;
    animation: float 10s ease-in-out infinite;
}

.orb-2 {
    width: 300px;
    height: 300px;
    background: rgba(131, 56, 236, 0.2);
    bottom: 10%;
    right: 15%;
    animation: float 8s ease-in-out infinite reverse;
}

/* --- Features Section --- */
.features-section {
    padding: 100px 0;
}

.section-header {
    text-align: center;
    margin-bottom: 64px;
}

.section-header h2 {
    font-size: 2.5rem;
    margin-bottom: 16px;
}

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

.features-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
}

.card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-smooth);
}

.feature-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.icon-wrapper {
    width: 56px;
    height: 56px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.icon-wrapper.blue {
    background: rgba(58, 134, 255, 0.1);
    color: var(--brand-blue);
}

.icon-wrapper.purple {
    background: rgba(131, 56, 236, 0.1);
    color: var(--brand-purple);
}

.icon-wrapper.teal {
    background: rgba(34, 197, 94, 0.1);
    color: var(--brand-teal);
}

.icon-wrapper.orange {
    background: rgba(245, 158, 11, 0.1);
    color: var(--brand-orange);
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 12px;
}

.feature-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* --- Privacy Section --- */
.privacy-section {
    padding: 60px 0 100px;
}

.privacy-card {
    display: flex;
    align-items: center;
    gap: 32px;
    padding: 40px;
    border-radius: var(--radius-xl);
    background: linear-gradient(145deg, #ffffff, #fcfdff);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.8);
}

.privacy-icon {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    background: rgba(34, 197, 94, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.privacy-text h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
}

.privacy-text p {
    color: var(--text-secondary);
}

/* --- Pages (Legal & Support) Layout --- */
.page-header {
    padding: 160px 24px 60px;
    text-align: center;
    background: linear-gradient(to bottom, var(--accent-blue-soft), transparent);
}

.page-header h1 {
    font-size: 2.5rem;
}

.page-header p {
    color: var(--text-secondary);
    margin-top: 8px;
}

.page-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 40px 24px 100px;
}

.page-content p {
    margin-bottom: 24px;
    color: var(--text-secondary);
}

.page-content h2,
.page-content h3 {
    margin-top: 40px;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.page-content ul {
    margin-bottom: 24px;
    padding-left: 24px;
    color: var(--text-secondary);
}

.page-content li {
    margin-bottom: 8px;
}

/* --- Support Form --- */
.support-form-card {
    background: var(--card-bg);
    border-radius: var(--radius-xl);
    padding: 48px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    margin-top: 48px;
}

.support-form-card h2 {
    font-size: 1.5rem;
    margin-bottom: 8px;
    margin-top: 0;
}

.support-form-card > p {
    color: var(--text-secondary);
    margin-bottom: 32px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 0.95rem;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 18px;
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: var(--radius-md);
    background: var(--bg-color);
    color: var(--text-primary);
    font-family: inherit;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(0, 122, 255, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-submit {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-top: 8px;
}

.form-submit .btn {
    font-family: inherit;
}

.form-note {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Support Info Cards */
.support-info {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    margin-top: 48px;
}

.info-card {
    background: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 32px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-smooth);
}

.info-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
}

.info-card-icon {
    width: 56px;
    height: 56px;
    background: var(--accent-blue-soft);
    color: var(--accent-blue);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 16px;
}

.info-card h3 {
    font-size: 1.1rem;
    margin-bottom: 8px;
}

.info-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.info-card a {
    color: var(--accent-blue);
    font-weight: 600;
    font-size: 0.9rem;
}

.info-card a:hover {
    text-decoration: underline;
}

/* --- Footer --- */
.footer {
    background: #FFFFFF;
    border-top: 1px solid var(--border-color);
    padding: 60px 0 30px;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 40px;
    margin-bottom: 60px;
}

.footer-brand {
    max-width: 300px;
}

.footer-brand p {
    color: var(--text-secondary);
    margin-top: 16px;
}

.footer-links {
    display: flex;
    gap: 60px;
}

.link-column h4 {
    font-size: 1rem;
    margin-bottom: 20px;
    color: var(--text-primary);
}

.link-column a {
    display: block;
    color: var(--text-secondary);
    margin-bottom: 12px;
    font-size: 0.95rem;
}

.link-column a:hover {
    color: var(--accent-blue);
}

.footer-bottom {
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.9rem;
    padding-top: 30px;
    border-top: 1px solid var(--border-color);
}

/* --- Animations --- */
@keyframes float {
    0% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
    100% { transform: translateY(0); }
}

.fade-in-up {
    opacity: 0;
    transform: translateY(20px);
    animation: fadeInUp 0.8s forwards;
}

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

.float-anim {
    animation: floatCard 6s ease-in-out infinite;
}

@keyframes floatCard {
    0% { transform: translateY(0); }
    50% { transform: translateY(-5px); }
    100% { transform: translateY(0); }
}

.feature-card:hover {
    animation: none;
    transform: translateY(-8px);
}

/* --- Responsive --- */
@media (max-width: 768px) {
    .nav-links,
    .navbar .btn {
        display: none;
    }

    .hero {
        padding-top: 120px;
    }

    .privacy-card {
        flex-direction: column;
        text-align: center;
        padding: 32px 24px;
    }

    .footer-content {
        flex-direction: column;
    }

    .footer-links {
        width: 100%;
        justify-content: space-between;
    }

    .support-form-card {
        padding: 32px 20px;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .form-submit {
        flex-direction: column;
        align-items: stretch;
    }
}