/* 
   SubSync Localization - Core Design System & Styling
   Author: Antigravity AI
*/

@import url('https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
    /* Color Palette - Premium HSL Indigo/Violet/Slate Theme */
    --cls-bg: #f8fafc;
    --cls-bg-card: rgba(255, 255, 255, 0.75);
    --cls-border: rgba(226, 232, 240, 0.8);
    
    --cls-primary: #6366f1; /* Indigo */
    --cls-primary-hover: #4f46e5;
    --cls-secondary: #0ea5e9; /* Sky Blue */
    --cls-dark: #0f172a; /* Slate 900 */
    --cls-muted: #475569; /* Slate 600 */
    --cls-light: #f1f5f9; /* Slate 100 */
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #0ea5e9 100%);
    --gradient-dark: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    --gradient-glow: radial-gradient(circle at top, rgba(99, 102, 241, 0.15) 0%, rgba(255, 255, 255, 0) 70%);

    /* Typography */
    --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Layout & Shadows */
    --radius-sm: 8px;
    --radius-md: 16px;
    --radius-lg: 24px;
    --shadow-sm: 0 2px 8px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 12px 32px rgba(15, 23, 42, 0.08);
    --shadow-lg: 0 24px 64px rgba(15, 23, 42, 0.12);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Dark Mode Overrides (Optional Toggle support) */
[data-theme="dark"] {
    --cls-bg: #090d16;
    --cls-bg-card: rgba(15, 23, 42, 0.6);
    --cls-border: rgba(51, 65, 85, 0.5);
    --cls-dark: #f8fafc;
    --cls-muted: #94a3b8;
    --cls-light: #1e293b;
    --gradient-glow: radial-gradient(circle at top, rgba(99, 102, 241, 0.25) 0%, rgba(9, 13, 22, 0) 70%);
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background-color: var(--cls-bg);
    color: var(--cls-dark);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    background-image: var(--gradient-glow);
    background-repeat: no-repeat;
    background-position: top center;
    background-size: 100% 1000px;
    transition: background-color 0.3s, color 0.3s;
}

/* Layout Utilities */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

section {
    padding: 100px 0;
}

/* Typography elements */
h1, h2, h3, h4 {
    font-weight: 700;
    letter-spacing: -0.02em;
    line-height: 1.25;
}

h1 {
    font-size: 3.5rem;
    margin-bottom: 24px;
}

@media (max-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }
}

h2 {
    font-size: 2.25rem;
    margin-bottom: 16px;
    text-align: center;
}

p {
    color: var(--cls-muted);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.95rem;
    padding: 12px 28px;
    border-radius: var(--radius-sm);
    transition: var(--transition);
    cursor: pointer;
    border: none;
    gap: 8px;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 14px rgba(99, 102, 241, 0.4);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(99, 102, 241, 0.6);
}

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

.btn-secondary:hover {
    background-color: var(--cls-light);
    transform: translateY(-2px);
}

/* Header & Navigation */
header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    background-color: rgba(248, 250, 252, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--cls-border);
    transition: var(--transition);
}

header.scrolled {
    box-shadow: var(--shadow-sm);
    padding: 8px 0;
}

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

.logo {
    display: flex;
    align-items: center;
    font-weight: 800;
    font-size: 1.4rem;
    color: var(--cls-dark);
    gap: 8px;
}

.logo svg {
    width: 32px;
    height: 32px;
    fill: url(#logo-grad);
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 32px;
    list-style: none;
}

.nav-links a {
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--cls-muted);
    transition: var(--transition);
}

.nav-links a:hover {
    color: var(--cls-primary);
}

.nav-cta {
    display: flex;
    align-items: center;
    gap: 16px;
}

/* Mobile Nav Toggle */
.mobile-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
}

.mobile-toggle span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--cls-dark);
    margin: 5px 0;
    transition: var(--transition);
}

@media (max-width: 992px) {
    .nav-links {
        display: none;
    }
    .nav-links.active {
        display: flex;
        flex-direction: column;
        position: absolute;
        top: 72px;
        left: 0;
        width: 100%;
        background-color: var(--cls-bg);
        border-bottom: 1px solid var(--cls-border);
        padding: 24px;
        gap: 16px;
        box-shadow: var(--shadow-md);
        z-index: 999;
    }
    .mobile-toggle {
        display: block;
    }
}

/* Hero Section */
.hero-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    padding-top: 140px;
    padding-bottom: 60px;
    gap: 48px;
}

@media (max-width: 992px) {
    .hero-wrapper {
        grid-template-columns: 1fr;
        text-align: center;
    }
    .hero-buttons {
        justify-content: center;
    }
}

.hero-text h1 span {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-text p {
    font-size: 1.15rem;
    margin-bottom: 36px;
    max-width: 540px;
}

@media (max-width: 992px) {
    .hero-text p {
        margin-left: auto;
        margin-right: auto;
    }
}

.hero-buttons {
    display: flex;
    gap: 16px;
}

.hero-visual {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
}

.video-mockup {
    background: #0f172a;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
    width: 100%;
    max-width: 500px;
    border: 4px solid #1e293b;
    position: relative;
}

.video-mockup-inner {
    padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
    position: relative;
}

.video-mockup-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.7;
}

.video-subtitle-overlay {
    position: absolute;
    bottom: 24px;
    left: 5%;
    right: 5%;
    background-color: rgba(0, 0, 0, 0.75);
    color: white;
    padding: 10px 16px;
    border-radius: var(--radius-sm);
    text-align: center;
    font-size: 0.95rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    font-weight: 500;
    transition: opacity 0.3s ease-in-out;
}

/* Feature Showcase Section */
.section-title {
    max-width: 600px;
    margin: 0 auto 64px auto;
}

.section-title p {
    text-align: center;
    font-size: 1.05rem;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 32px;
}

.service-card {
    background-color: var(--cls-bg-card);
    border: 1px solid var(--cls-border);
    border-radius: var(--radius-md);
    padding: 40px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.service-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-md);
    border-color: rgba(99, 102, 241, 0.3);
}

.service-icon {
    width: 48px;
    height: 48px;
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
}

.service-icon svg {
    width: 24px;
    height: 24px;
    fill: currentColor;
}

.service-card h3 {
    margin-bottom: 12px;
    font-size: 1.35rem;
}

/* Process Section */
.process-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.process-timeline::before {
    content: '';
    position: absolute;
    top: 0;
    bottom: 0;
    left: 50%;
    width: 2px;
    background-color: var(--cls-border);
    transform: translateX(-50%);
}

@media (max-width: 768px) {
    .process-timeline::before {
        left: 24px;
    }
}

.process-step {
    display: grid;
    grid-template-columns: 1fr 120px 1fr;
    align-items: center;
    margin-bottom: 64px;
}

@media (max-width: 768px) {
    .process-step {
        grid-template-columns: 48px 1fr;
        gap: 16px;
        margin-bottom: 40px;
    }
}

.step-content {
    background-color: var(--cls-bg-card);
    border: 1px solid var(--cls-border);
    padding: 32px;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
}

.step-badge {
    justify-self: center;
    width: 48px;
    height: 48px;
    background-color: var(--cls-light);
    border: 2px solid var(--cls-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    color: var(--cls-primary);
    z-index: 2;
}

@media (max-width: 768px) {
    .step-badge {
        grid-column: 1;
        justify-self: start;
    }
    .step-content {
        grid-column: 2;
    }
}

.process-step:nth-child(even) .step-content {
    grid-column: 3;
}

.process-step:nth-child(odd) .step-content {
    grid-column: 1;
}

@media (max-width: 768px) {
    .process-step:nth-child(even) .step-content,
    .process-step:nth-child(odd) .step-content {
        grid-column: 2;
    }
}

/* Pricing Interactive Calculator */
.pricing-wrapper {
    background-color: var(--cls-bg-card);
    border: 1px solid var(--cls-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    max-width: 900px;
    margin: 0 auto;
    overflow: hidden;
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
}

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

.calculator-section {
    padding: 48px;
}

.summary-section {
    background: var(--gradient-dark);
    color: white;
    padding: 48px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.slider-group {
    margin-bottom: 32px;
}

.slider-group label {
    display: flex;
    justify-content: space-between;
    font-weight: 600;
    margin-bottom: 12px;
}

.slider-group label span {
    color: var(--cls-primary);
}

.calc-range {
    -webkit-appearance: none;
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: var(--cls-light);
    outline: none;
}

.calc-range::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--cls-primary);
    cursor: pointer;
    box-shadow: 0 0 10px rgba(99, 102, 241, 0.4);
    transition: var(--transition);
}

.calc-range::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

.checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin-bottom: 24px;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
    cursor: pointer;
}

.checkbox-label input {
    width: 18px;
    height: 18px;
    accent-color: var(--cls-primary);
}

.price-box {
    text-align: center;
    margin-bottom: 32px;
}

.price-title {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: 8px;
}

.price-amount {
    font-size: 3rem;
    font-weight: 800;
}

.price-amount span {
    font-size: 1rem;
    font-weight: 500;
    color: rgba(255, 255, 255, 0.7);
}

.pricing-features {
    list-style: none;
    margin-bottom: 32px;
}

.pricing-features li {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 12px;
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.85);
}

.pricing-features svg {
    width: 18px;
    height: 18px;
    fill: var(--cls-secondary);
}

/* Compliance Section */
.compliance-section {
    background-color: var(--cls-light);
    border-top: 1px solid var(--cls-border);
    border-bottom: 1px solid var(--cls-border);
}

.compliance-box {
    background-color: var(--cls-bg-card);
    border: 1px solid var(--cls-border);
    border-radius: var(--radius-md);
    padding: 48px;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.compliance-box h3 {
    margin-bottom: 16px;
    color: var(--cls-dark);
}

.compliance-box p {
    font-size: 1rem;
    margin-bottom: 24px;
}

.compliance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 24px;
    margin-top: 32px;
}

.compliance-item {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--cls-muted);
}

/* FAQ Section */
.faq-accordion {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background-color: var(--cls-bg-card);
    border: 1px solid var(--cls-border);
    border-radius: var(--radius-sm);
    margin-bottom: 16px;
    overflow: hidden;
}

.faq-question {
    padding: 24px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.faq-question::after {
    content: '+';
    font-size: 1.5rem;
    color: var(--cls-primary);
    transition: var(--transition);
}

.faq-item.active .faq-question::after {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    transition: var(--transition);
    color: var(--cls-muted);
}

.faq-item.active .faq-answer {
    padding: 0 24px 24px 24px;
    max-height: 200px;
}

/* Footer & Policies Links */
footer {
    background-color: var(--cls-dark);
    color: #94a3b8;
    padding: 64px 0 32px 0;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.5fr;
    gap: 48px;
    margin-bottom: 48px;
}

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

.footer-logo {
    color: white;
    font-size: 1.5rem;
    font-weight: 800;
    margin-bottom: 16px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.footer-links h4, .footer-contact h4 {
    color: white;
    margin-bottom: 20px;
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.footer-links ul {
    list-style: none;
}

.footer-links li {
    margin-bottom: 12px;
}

.footer-links a {
    transition: var(--transition);
}

.footer-links a:hover {
    color: white;
}

.footer-contact p {
    margin-bottom: 12px;
    color: #94a3b8;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.05);
    padding-top: 32px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
}

@media (max-width: 768px) {
    .footer-bottom {
        flex-direction: column;
        gap: 16px;
        text-align: center;
    }
}

/* Policy Page Styling */
.policy-page {
    padding-top: 140px;
    padding-bottom: 100px;
    max-width: 800px;
    margin: 0 auto;
}

.policy-page h1 {
    font-size: 2.75rem;
    margin-bottom: 8px;
}

.policy-meta {
    color: var(--cls-muted);
    font-size: 0.9rem;
    margin-bottom: 48px;
}

.policy-content h2 {
    font-size: 1.75rem;
    text-align: left;
    margin-top: 40px;
    margin-bottom: 16px;
    color: var(--cls-dark);
}

.policy-content p, .policy-content ul {
    margin-bottom: 24px;
    color: var(--cls-muted);
}

.policy-content ul {
    padding-left: 24px;
}

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

/* Modal Overlay styling */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 2000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.modal-content {
    background-color: var(--cls-bg);
    border: 1px solid var(--cls-border);
    border-radius: var(--radius-lg);
    padding: 40px;
    width: 90%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    position: relative;
    transform: translateY(20px);
    transition: var(--transition);
}

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

.modal-close {
    position: absolute;
    top: 20px;
    right: 20px;
    background: none;
    border: none;
    font-size: 1.75rem;
    color: var(--cls-muted);
    cursor: pointer;
    line-height: 1;
}

.modal-close:hover {
    color: var(--cls-dark);
}

/* Form inputs styling */
.form-group {
    margin-bottom: 20px;
    text-align: left;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--cls-dark);
}

.form-group input {
    width: 100%;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    border: 1px solid var(--cls-border);
    background-color: var(--cls-bg-card);
    color: var(--cls-dark);
    font-family: var(--font-sans);
    outline: none;
    transition: var(--transition);
}

.form-group input:focus {
    border-color: var(--cls-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.form-row {
    display: flex;
    justify-content: space-between;
    background-color: var(--cls-light);
    padding: 16px;
    border-radius: var(--radius-sm);
    margin-bottom: 24px;
    font-size: 0.95rem;
}

.form-row strong {
    color: var(--cls-primary);
}

.form-success-state {
    text-align: center;
    padding: 24px 0;
}

.form-success-state h3 {
    margin-bottom: 12px;
}