/* Gaia AI Lab - Main Stylesheet */

/* ========== CSS Variables ========== */
:root {
    /* Colors */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #0ea5e9;
    --secondary-dark: #0284c7;
    --accent: #10b981;
    --accent-orange: #f59e0b;

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);
    --gradient-orbiter: linear-gradient(135deg, #6366f1 0%, #0ea5e9 100%);
    --gradient-teammate: linear-gradient(135deg, #10b981 0%, #0ea5e9 100%);
    --gradient-dark: linear-gradient(135deg, #1e1b4b 0%, #312e81 100%);

    /* Backgrounds */
    --bg-dark: #0f0f23;
    --bg-darker: #0a0a1a;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);

    /* Text */
    --text-primary: #ffffff;
    --text-secondary: rgba(255, 255, 255, 0.7);
    --text-muted: rgba(255, 255, 255, 0.5);

    /* Borders */
    --border-color: rgba(255, 255, 255, 0.1);
    --border-color-hover: rgba(255, 255, 255, 0.2);

    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px rgba(99, 102, 241, 0.3);

    /* Spacing */
    --container-width: 1200px;
    --section-padding: 100px;
    --card-radius: 16px;
    --btn-radius: 8px;

    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

ul, ol {
    list-style: none;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

button {
    font-family: inherit;
    cursor: pointer;
    border: none;
    background: none;
}

/* ========== Typography ========== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
}

h1 { font-size: clamp(2.5rem, 5vw, 4rem); }
h2 { font-size: clamp(2rem, 4vw, 3rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: 1.25rem; }

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

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

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

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

/* ========== Layout ========== */
.container {
    width: 100%;
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.section {
    padding: var(--section-padding) 0;
}

.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto 60px;
}

.section-header h2 {
    margin-bottom: 16px;
}

.section-header p {
    font-size: 1.125rem;
}

/* ========== Header & Navigation ========== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: rgba(15, 15, 35, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    transition: var(--transition-normal);
}

.header.scrolled {
    background: rgba(15, 15, 35, 0.95);
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-icon {
    width: 40px;
    height: 40px;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 8px;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 10px 16px;
    border-radius: var(--btn-radius);
    color: var(--text-secondary);
    font-weight: 500;
    transition: var(--transition-fast);
}

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

.nav-link.active {
    color: var(--text-primary);
}

.nav-dropdown-icon {
    width: 16px;
    height: 16px;
    transition: var(--transition-fast);
}

.nav-item:hover .nav-dropdown-icon {
    transform: rotate(180deg);
}

/* Dropdown Menu */
.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 280px;
    padding: 8px;
    background: var(--bg-darker);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    box-shadow: var(--shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: var(--transition-normal);
}

.nav-item:hover .dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown-item {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    padding: 12px;
    border-radius: 8px;
    transition: var(--transition-fast);
}

.dropdown-item:hover {
    background: var(--bg-card);
}

.dropdown-icon {
    width: 40px;
    height: 40px;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.dropdown-icon.orbiter {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(14, 165, 233, 0.2));
}

.dropdown-icon.teammate {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(14, 165, 233, 0.2));
}

.dropdown-icon svg {
    width: 24px;
    height: 24px;
}

.dropdown-content h4 {
    margin-bottom: 4px;
    font-size: 1rem;
}

.dropdown-content p {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Nav Actions */
.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* ========== Buttons ========== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: var(--btn-radius);
    font-weight: 600;
    font-size: 0.9375rem;
    transition: var(--transition-fast);
    white-space: nowrap;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px rgba(99, 102, 241, 0.5);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-color-hover);
}

.btn-orbiter {
    background: var(--gradient-orbiter);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.btn-teammate {
    background: var(--gradient-teammate);
    color: white;
    box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4);
}

.btn-lg {
    padding: 16px 32px;
    font-size: 1rem;
}

.btn-icon {
    width: 20px;
    height: 20px;
}

/* ========== Hero Section ========== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 72px;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
    z-index: -1;
}

.hero-bg::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle at 30% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
                radial-gradient(circle at 70% 60%, rgba(14, 165, 233, 0.1) 0%, transparent 40%),
                radial-gradient(circle at 40% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 30%);
    animation: heroGradient 20s ease-in-out infinite;
}

@keyframes heroGradient {
    0%, 100% { transform: translate(0, 0) rotate(0deg); }
    50% { transform: translate(-5%, -5%) rotate(5deg); }
}

.hero-grid {
    position: absolute;
    inset: 0;
    background-image:
        linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
        linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
    background-size: 60px 60px;
    mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}

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

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.hero-badge-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.hero h1 {
    margin-bottom: 24px;
}

.hero-description {
    font-size: 1.25rem;
    max-width: 700px;
    margin: 0 auto 40px;
    color: var(--text-secondary);
}

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

/* ========== Products Section ========== */
.products {
    background: var(--bg-darker);
}

.products-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 32px;
}

@media (max-width: 768px) {
    .products-grid {
        grid-template-columns: 1fr;
    }
}

.product-card {
    position: relative;
    padding: 48px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    overflow: hidden;
    transition: var(--transition-normal);
}

.product-card:hover {
    border-color: var(--border-color-hover);
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.product-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
}

.product-card.orbiter::before {
    background: var(--gradient-orbiter);
}

.product-card.teammate::before {
    background: var(--gradient-teammate);
}

.product-icon {
    width: 64px;
    height: 64px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.product-icon.orbiter {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.2), rgba(14, 165, 233, 0.2));
}

.product-icon.teammate {
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.2), rgba(14, 165, 233, 0.2));
}

.product-icon svg {
    width: 32px;
    height: 32px;
}

.product-card h3 {
    margin-bottom: 12px;
}

.product-card > p {
    margin-bottom: 32px;
    font-size: 1.0625rem;
}

.product-features {
    margin-bottom: 32px;
}

.product-feature {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 0;
    border-bottom: 1px solid var(--border-color);
}

.product-feature:last-child {
    border-bottom: none;
}

.product-feature-icon {
    width: 20px;
    height: 20px;
    color: var(--accent);
    flex-shrink: 0;
}

.product-feature span {
    color: var(--text-secondary);
}

/* ========== Features Section ========== */
.features-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
}

@media (max-width: 992px) {
    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 576px) {
    .features-grid {
        grid-template-columns: 1fr;
    }
}

.feature-card {
    padding: 32px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--card-radius);
    transition: var(--transition-normal);
}

.feature-card:hover {
    border-color: var(--border-color-hover);
    background: var(--bg-card-hover);
}

.feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 20px;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(139, 92, 246, 0.15));
}

.feature-icon svg {
    width: 24px;
    height: 24px;
    color: var(--primary-light);
}

.feature-card h4 {
    margin-bottom: 12px;
}

.feature-card p {
    font-size: 0.9375rem;
}

/* ========== Architecture Section ========== */
.architecture {
    background: var(--bg-darker);
}

.architecture-diagram {
    max-width: 900px;
    margin: 0 auto;
    padding: 48px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
}

.architecture-diagram svg {
    width: 100%;
    height: auto;
}

/* ========== Stats Section ========== */
.stats {
    background: var(--gradient-dark);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 32px;
    text-align: center;
}

@media (max-width: 768px) {
    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.stat-item h3 {
    font-size: 3rem;
    margin-bottom: 8px;
}

.stat-item p {
    font-size: 1rem;
    color: var(--text-muted);
}

/* ========== Partners Section ========== */
.partners-grid {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    gap: 48px;
    opacity: 0.6;
}

.partner-logo {
    height: 32px;
    width: auto;
}

.partner-logo svg {
    height: 100%;
    width: auto;
    fill: currentColor;
}

/* ========== CTA Section ========== */
.cta {
    background: var(--bg-darker);
}

.cta-card {
    position: relative;
    padding: 80px;
    text-align: center;
    background: var(--gradient-primary);
    border-radius: 32px;
    overflow: hidden;
}

.cta-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.cta-content {
    position: relative;
    z-index: 1;
}

.cta h2 {
    margin-bottom: 16px;
}

.cta p {
    font-size: 1.25rem;
    color: rgba(255, 255, 255, 0.9);
    margin-bottom: 32px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.cta .btn-primary {
    background: white;
    color: var(--primary-dark);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.cta .btn-primary:hover {
    box-shadow: 0 6px 25px rgba(0, 0, 0, 0.3);
}

/* ========== Footer ========== */
.footer {
    padding: 80px 0 40px;
    border-top: 1px solid var(--border-color);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 48px;
    margin-bottom: 60px;
}

@media (max-width: 768px) {
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 480px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
}

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

.footer-brand .logo {
    margin-bottom: 16px;
}

.footer-brand p {
    font-size: 0.9375rem;
}

.footer-col h4 {
    margin-bottom: 20px;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--text-muted);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-link {
    color: var(--text-secondary);
    font-size: 0.9375rem;
    transition: var(--transition-fast);
}

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

.footer-bottom {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding-top: 40px;
    border-top: 1px solid var(--border-color);
}

@media (max-width: 576px) {
    .footer-bottom {
        flex-direction: column;
        gap: 20px;
        text-align: center;
    }
}

.footer-copyright {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.footer-social {
    display: flex;
    gap: 16px;
}

.social-link {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    transition: var(--transition-fast);
}

.social-link:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-color-hover);
    color: var(--text-primary);
}

.social-link svg {
    width: 20px;
    height: 20px;
}

/* ========== Page-Specific: Product Pages ========== */
.product-hero {
    padding-top: 120px;
    padding-bottom: 80px;
}

.product-hero .hero-content {
    max-width: 800px;
}

.product-hero.orbiter .hero-bg::before {
    background: radial-gradient(circle at 50% 30%, rgba(99, 102, 241, 0.2) 0%, transparent 50%),
                radial-gradient(circle at 70% 60%, rgba(14, 165, 233, 0.15) 0%, transparent 40%);
}

.product-hero.teammate .hero-bg::before {
    background: radial-gradient(circle at 50% 30%, rgba(16, 185, 129, 0.2) 0%, transparent 50%),
                radial-gradient(circle at 70% 60%, rgba(14, 165, 233, 0.15) 0%, transparent 40%);
}

/* Marketplace Preview */
.marketplace-preview {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-top: 60px;
}

@media (max-width: 768px) {
    .marketplace-preview {
        grid-template-columns: 1fr;
    }
}

.marketplace-card {
    padding: 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--card-radius);
    text-align: center;
}

.marketplace-card-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto 16px;
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.15), rgba(139, 92, 246, 0.15));
}

.marketplace-card-icon svg {
    width: 32px;
    height: 32px;
    color: var(--primary-light);
}

.marketplace-card h4 {
    margin-bottom: 8px;
}

.marketplace-card p {
    font-size: 0.875rem;
}

/* Workflow Section */
.workflow {
    background: var(--bg-darker);
}

.workflow-steps {
    display: flex;
    align-items: flex-start;
    gap: 24px;
    position: relative;
}

@media (max-width: 768px) {
    .workflow-steps {
        flex-direction: column;
    }
}

.workflow-step {
    flex: 1;
    text-align: center;
    padding: 32px 24px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--card-radius);
    position: relative;
}

.workflow-step-number {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    font-weight: 700;
    font-size: 1.25rem;
    background: var(--gradient-primary);
}

.workflow-step h4 {
    margin-bottom: 12px;
}

.workflow-connector {
    position: absolute;
    top: 50%;
    right: -24px;
    width: 24px;
    height: 2px;
    background: var(--border-color);
}

@media (max-width: 768px) {
    .workflow-connector {
        display: none;
    }
}

.workflow-step:last-child .workflow-connector {
    display: none;
}

/* ========== Utilities ========== */
.mb-0 { margin-bottom: 0 !important; }
.mb-4 { margin-bottom: 16px !important; }
.mb-8 { margin-bottom: 32px !important; }
.mt-4 { margin-top: 16px !important; }
.mt-8 { margin-top: 32px !important; }

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

/* ========== Animations ========== */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.animate-fade-in {
    animation: fadeIn 0.6s ease forwards;
}

.delay-1 { animation-delay: 0.1s; }
.delay-2 { animation-delay: 0.2s; }
.delay-3 { animation-delay: 0.3s; }
.delay-4 { animation-delay: 0.4s; }

/* ========== Modal ========== */
.modal-overlay {
    position: fixed;
    inset: 0;
    z-index: 2000;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    position: relative;
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    overflow-y: auto;
    background: var(--bg-darker);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 40px;
    transform: translateY(20px) scale(0.95);
    transition: var(--transition-normal);
}

.modal-overlay.active .modal {
    transform: translateY(0) scale(1);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    color: var(--text-muted);
    transition: var(--transition-fast);
}

.modal-close:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.modal-header {
    text-align: center;
    margin-bottom: 32px;
}

.modal-header h3 {
    font-size: 1.75rem;
    margin-bottom: 8px;
}

.modal-header p {
    color: var(--text-muted);
}

/* Form Styles */
.modal-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-secondary);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

@media (max-width: 480px) {
    .form-row {
        grid-template-columns: 1fr;
    }
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 14px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--btn-radius);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 1rem;
    transition: var(--transition-fast);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-group select {
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg width='12' height='12' viewBox='0 0 12 12' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M3 4.5L6 7.5L9 4.5' stroke='%23888' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

/* Radio Card Group */
.radio-group {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

@media (max-width: 480px) {
    .radio-group {
        grid-template-columns: 1fr;
    }
}

.radio-card {
    cursor: pointer;
}

.radio-card input {
    display: none;
}

.radio-card-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    padding: 16px;
    background: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 12px;
    transition: var(--transition-fast);
    text-align: center;
}

.radio-card-content span {
    font-weight: 600;
    font-size: 0.9375rem;
}

.radio-card-content small {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.radio-card input:checked + .radio-card-content {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
}

.radio-card:hover .radio-card-content {
    border-color: var(--border-color-hover);
}

/* Submit Button */
.btn-block {
    width: 100%;
}

.btn-loading {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.spinner {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.form-disclaimer {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: center;
    margin-top: 8px;
}

/* Success State */
.modal-success {
    text-align: center;
    padding: 20px 0;
}

.success-icon {
    margin-bottom: 24px;
}

.modal-success h3 {
    font-size: 1.5rem;
    margin-bottom: 12px;
    color: #10b981;
}

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

/* ========== Mobile Menu ========== */
.mobile-menu-toggle {
    display: none;
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
    border-radius: var(--btn-radius);
    background: var(--bg-card);
    border: 1px solid var(--border-color);
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .nav-menu {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        flex-direction: column;
        padding: 16px;
        background: var(--bg-darker);
        border-bottom: 1px solid var(--border-color);
        display: none;
    }

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

    .dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        margin-top: 8px;
        box-shadow: none;
    }

    .nav-actions {
        display: none;
    }
}