/* ==========================================================================
   TrustVault - Main Stylesheet
   ========================================================================== */

/* CSS Variables for Easy Customization */
:root {
    /* Primary Color Palette */
    --primary-color: #5E17EB;        /* Royal purple - regal trust */
    --primary-light: #7d3ef5;
    --primary-dark: #4912c0;
    --accent-color: #3182ce;         /* Bright blue - CTAs */
    --accent-hover: #2c5aa0;

    /* Neutral Colors */
    --white: #ffffff;
    --gray-50: #f7fafc;
    --gray-100: #edf2f7;
    --gray-200: #e2e8f0;
    --gray-300: #cbd5e0;
    --gray-400: #a0aec0;
    --gray-500: #718096;
    --gray-600: #4a5568;
    --gray-700: #2d3748;
    --gray-800: #1a202c;
    --gray-900: #171923;

    /* Semantic Colors */
    --success: #38a169;
    --warning: #d69e2e;
    --error: #e53e3e;
    --info: #3182ce;

    /* Typography */
    --font-primary: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: "SF Mono", Monaco, "Cascadia Code", "Courier New", monospace;

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

    /* Layout */
    --container-max-width: 1200px;
    --container-padding: 1.5rem;
    --border-radius: 8px;
    --border-radius-sm: 4px;

    /* Shadows */
    --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
}

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

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

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

body {
    font-family: var(--font-primary);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==========================================================================
   Typography
   ========================================================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--primary-color);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

p {
    margin-bottom: var(--spacing-sm);
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--accent-hover);
    text-decoration: underline;
}

strong {
    font-weight: 600;
}

/* ==========================================================================
   Layout Components
   ========================================================================== */

.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.section {
    padding: var(--spacing-2xl) 0;
}

.section-gray {
    background-color: var(--gray-50);
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-xl);
    font-size: 2rem;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.header {
    background-color: var(--white);
    border-bottom: 1px solid var(--gray-200);
    position: sticky;
    top: 0;
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) 0;
}

.logo {
    flex-shrink: 0;
}

.logo-img {
    height: 50px;
    width: auto;
}

.nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-xs);
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--gray-700);
    position: relative;
    transition: background-color var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--gray-700);
    transition: transform var(--transition-base);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

.nav-toggle[aria-expanded="true"] .hamburger {
    background-color: transparent;
}

.nav-toggle[aria-expanded="true"] .hamburger::before {
    transform: translateY(8px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .hamburger::after {
    transform: translateY(-8px) rotate(-45deg);
}

.nav-list {
    display: flex;
    gap: var(--spacing-lg);
    list-style: none;
}

.nav-link {
    display: block;
    padding: var(--spacing-xs) var(--spacing-sm);
    color: var(--gray-700);
    font-weight: 500;
    text-decoration: none;
    transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--accent-color);
}

.nav-link.active {
    border-bottom: 2px solid var(--accent-color);
}

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

.hero-carousel {
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 50%, var(--primary-light) 100%);
    border-bottom: none;
}

.carousel-container {
    position: relative;
    width: 100%;
    height: 400px;
}

.carousel-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0;
    transition: opacity 1s ease-in-out;
    display: flex;
    align-items: center;
    color: var(--white);
    text-align: center;
    padding: var(--spacing-lg) 0;
}

.carousel-slide.active {
    opacity: 1;
    z-index: 1;
}

.carousel-slide .hero-content {
    max-width: 900px;
    margin: 0 auto;
    animation: slideIn 0.8s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-title {
    font-size: 3rem;
    font-weight: 700;
    color: var(--white);
    margin-bottom: var(--spacing-md);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
    opacity: 0.95;
    line-height: 1.6;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Carousel Navigation Dots */
.carousel-dots {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 12px;
    z-index: 10;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    border: 2px solid rgba(255, 255, 255, 0.5);
    background: transparent;
    cursor: pointer;
    transition: all var(--transition-base);
    padding: 0;
}

.carousel-dot:hover {
    background: rgba(255, 255, 255, 0.7);
    transform: scale(1.2);
}

.carousel-dot.active {
    background: var(--white);
    border-color: var(--white);
}

/* Carousel Navigation Arrows */
.carousel-arrow {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(255, 255, 255, 0.1);
    border: 2px solid rgba(255, 255, 255, 0.3);
    color: var(--white);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    z-index: 10;
    backdrop-filter: blur(10px);
}

.carousel-arrow:hover {
    background: rgba(255, 255, 255, 0.2);
    border-color: rgba(255, 255, 255, 0.5);
    transform: translateY(-50%) scale(1.1);
}

.carousel-arrow-prev {
    left: 20px;
}

.carousel-arrow-next {
    right: 20px;
}

/* Legacy Hero Section (for backward compatibility) */
.hero {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 50%, var(--primary-light) 100%);
    color: var(--white);
    padding: var(--spacing-2xl) 0;
    text-align: center;
}

.hero .hero-content {
    max-width: 800px;
    margin: 0 auto;
}

/* Page Hero (for subpages) */
.page-hero {
    background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 50%, var(--primary-light) 100%);
    padding: var(--spacing-2xl) 0;
    text-align: center;
    border-bottom: none;
    color: var(--white);
}

.page-hero-small {
    padding: var(--spacing-xl) 0;
}

.page-hero h1 {
    margin-bottom: var(--spacing-sm);
    color: var(--white);
}

.page-hero .lead {
    font-size: 1.25rem;
    color: var(--white);
    opacity: 0.95;
    margin-bottom: 0;
}

.last-updated {
    font-size: 0.875rem;
    color: var(--gray-500);
    margin-bottom: 0;
}

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

.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    text-decoration: none;
    border-radius: var(--border-radius);
    border: none;
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-primary {
    background-color: var(--white);
    color: var(--primary-color);
    font-weight: 600;
}

.btn-primary:hover {
    background-color: var(--gray-100);
    color: var(--primary-dark);
    text-decoration: none;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

.btn-secondary:hover {
    background-color: var(--white);
    color: var(--primary-color);
    text-decoration: none;
    transform: translateY(-2px);
}

.btn-small {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

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

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

.cards-grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-lg);
}

.card {
    background-color: var(--white);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.card-title {
    color: var(--primary-color);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.card p {
    margin-bottom: 0;
    color: var(--gray-700);
}

/* ==========================================================================
   Content Text Blocks
   ========================================================================== */

.content-text {
    max-width: 800px;
    margin: 0 auto;
}

.content-text p,
.content-text ul,
.content-text ol {
    margin-bottom: var(--spacing-md);
}

.content-text h3 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.styled-list {
    list-style: none;
    padding-left: 0;
}

.styled-list li {
    padding-left: 1.5rem;
    position: relative;
    margin-bottom: var(--spacing-sm);
}

.styled-list li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--accent-color);
    font-weight: bold;
}

/* ==========================================================================
   Features Grid
   ========================================================================== */

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

.feature-item h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.feature-item p {
    margin-bottom: 0;
    color: var(--gray-700);
}

/* ==========================================================================
   Service Details
   ========================================================================== */

.service-detail {
    margin-bottom: var(--spacing-xl);
}

.service-detail h3 {
    color: var(--primary-color);
}

/* ==========================================================================
   Diagrams
   ========================================================================== */

.diagram-container {
    margin: var(--spacing-xl) 0;
    text-align: center;
    background: var(--white);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
}

.diagram-img {
    max-width: 800px;
    width: 100%;
    height: auto;
    border: 1px solid var(--gray-200);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    cursor: pointer;
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.diagram-img:hover {
    transform: scale(1.02);
    box-shadow: var(--shadow-lg);
}

/* Make diagrams clickable to view larger */
.diagram-img:active {
    transform: scale(0.98);
}

.diagram-caption {
    margin-top: var(--spacing-sm);
    font-size: 0.875rem;
    color: var(--gray-600);
    font-style: italic;
}

/* Diagram modal for full-size viewing */
.diagram-modal {
    display: none;
    position: fixed;
    z-index: 9999;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.9);
    cursor: zoom-out;
}

.diagram-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.diagram-modal img {
    max-width: 95%;
    max-height: 95%;
    object-fit: contain;
    border-radius: var(--border-radius);
}

/* ==========================================================================
   CTA Section
   ========================================================================== */

.cta-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-light) 100%);
    color: var(--white);
    text-align: center;
}

.cta-content h2 {
    color: var(--white);
    margin-bottom: var(--spacing-sm);
}

.cta-content p {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.95;
}

/* ==========================================================================
   Contact Page
   ========================================================================== */

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-2xl);
}

.contact-info h2 {
    margin-bottom: var(--spacing-md);
}

.contact-details {
    margin-top: var(--spacing-lg);
}

.contact-item {
    margin-bottom: var(--spacing-lg);
}

.contact-item h3 {
    font-size: 1rem;
    margin-bottom: var(--spacing-xs);
    color: var(--gray-700);
}

.contact-note {
    font-size: 0.875rem;
    color: var(--gray-600);
    margin-bottom: 0;
}

.contact-topics {
    margin-top: var(--spacing-xl);
    padding: var(--spacing-md);
    background-color: var(--gray-50);
    border-radius: var(--border-radius);
}

.contact-topics h3 {
    font-size: 1.125rem;
}

/* Contact Form */
.contact-form-container {
    background-color: var(--gray-50);
    padding: var(--spacing-lg);
    border-radius: var(--border-radius);
}

.form-notice {
    background-color: var(--info);
    color: var(--white);
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    margin-bottom: var(--spacing-lg);
}

.form-notice p {
    margin-bottom: 0;
    font-size: 0.875rem;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

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

.form-group label {
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--gray-700);
}

.required {
    color: var(--error);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--border-radius-sm);
    font-family: var(--font-primary);
    font-size: 1rem;
    transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(49, 130, 206, 0.1);
}

.checkbox-label {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
    cursor: pointer;
}

.checkbox-label input[type="checkbox"] {
    margin-top: 0.25rem;
    width: auto;
}

/* ==========================================================================
   Legal Pages
   ========================================================================== */

.legal-content {
    padding: var(--spacing-xl) 0;
}

.legal-notice {
    background-color: var(--warning);
    color: var(--gray-900);
    padding: var(--spacing-md);
    border-left: 4px solid #b7791f;
    margin-bottom: var(--spacing-xl);
    border-radius: var(--border-radius-sm);
}

.legal-text {
    max-width: 900px;
    margin: 0 auto;
}

.legal-text h2 {
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    padding-bottom: var(--spacing-xs);
    border-bottom: 2px solid var(--gray-200);
}

.legal-text h3 {
    margin-top: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
    font-size: 1.25rem;
}

.legal-text p,
.legal-text ul {
    font-size: 0.9375rem;
    line-height: 1.7;
}

.legal-detail {
    padding: var(--spacing-md);
    background-color: var(--gray-50);
    border-left: 4px solid var(--accent-color);
    margin: var(--spacing-md) 0;
    border-radius: var(--border-radius-sm);
}

.notice {
    padding: var(--spacing-md);
    background-color: var(--gray-100);
    border-left: 4px solid var(--info);
    margin: var(--spacing-md) 0;
    border-radius: var(--border-radius-sm);
}

/* Cookie Table */
.cookie-table {
    overflow-x: auto;
    margin: var(--spacing-md) 0;
}

.cookie-table table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.cookie-table th,
.cookie-table td {
    padding: var(--spacing-sm);
    text-align: left;
    border: 1px solid var(--gray-200);
}

.cookie-table th {
    background-color: var(--gray-100);
    font-weight: 600;
    color: var(--gray-700);
}

.cookie-table tr:nth-child(even) {
    background-color: var(--gray-50);
}

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

.footer {
    background-color: var(--gray-900);
    color: var(--gray-300);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
}

.footer-content {
    text-align: center;
}

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

.footer-links a {
    color: var(--gray-300);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--white);
    text-decoration: underline;
}

.footer-copy {
    font-size: 0.875rem;
    color: var(--gray-400);
}

.footer-copy p {
    margin-bottom: var(--spacing-xs);
}

.footer-trademark {
    font-size: 0.75rem;
    color: var(--gray-500);
}

/* ==========================================================================
   Cookie Banner
   ========================================================================== */

.cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background-color: var(--gray-900);
    color: var(--white);
    padding: var(--spacing-md);
    box-shadow: 0 -2px 10px rgba(0, 0, 0, 0.1);
    z-index: 9999;
}

.cookie-banner-content {
    max-width: var(--container-max-width);
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.cookie-banner p {
    margin-bottom: 0;
    flex: 1;
    min-width: 250px;
}

.cookie-banner a {
    color: var(--accent-color);
}

.cookie-banner .btn {
    flex-shrink: 0;
}

/* ==========================================================================
   Responsive Design
   ========================================================================== */

/* Tablet */
@media (max-width: 768px) {
    html {
        font-size: 15px;
    }

    .hero-title {
        font-size: 2.25rem;
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }

    /* Carousel adjustments for tablet */
    .carousel-container {
        height: 500px;
    }

    .carousel-arrow {
        width: 40px;
        height: 40px;
    }

    .carousel-arrow-prev {
        left: 10px;
    }

    .carousel-arrow-next {
        right: 10px;
    }

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

    .contact-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .cards-grid-2 {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }

    .nav-toggle {
        display: block;
    }

    .nav {
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background-color: var(--white);
        border-top: 1px solid var(--gray-200);
        box-shadow: var(--shadow-md);
        display: none;
    }

    .nav.active {
        display: block;
    }

    .nav-list {
        flex-direction: column;
        gap: 0;
        padding: var(--spacing-sm) 0;
    }

    .nav-link {
        padding: var(--spacing-sm) var(--container-padding);
        border-bottom: none;
    }

    .nav-link.active {
        background-color: var(--gray-50);
        border-bottom: none;
        border-left: 4px solid var(--accent-color);
    }
}

/* Mobile */
@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

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

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

    .hero-buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }

    /* Carousel adjustments for mobile */
    .carousel-container {
        height: 550px;
    }

    .carousel-slide {
        padding: var(--spacing-lg) 0;
    }

    .carousel-arrow {
        display: none; /* Hide arrows on mobile, use swipe instead */
    }

    .carousel-dots {
        bottom: 20px;
    }

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

    .cards-grid-2 {
        grid-template-columns: 1fr;
    }

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

    .cookie-banner-content {
        flex-direction: column;
        text-align: center;
    }

    .cookie-banner .btn {
        width: 100%;
    }

    .footer-links {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
}

/* Print Styles */
@media print {
    .header,
    .footer,
    .cookie-banner,
    .hero-buttons,
    .cta-section,
    .btn {
        display: none !important;
    }

    body {
        font-size: 12pt;
        line-height: 1.5;
    }

    a {
        text-decoration: underline;
    }
}