/* ============================================
   Time Table Master Website Styles
   Mobile-first responsive design
   ============================================ */

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

:root {
    /* Color scheme matching the Flutter app */
    --primary-color: #1976D2;
    --primary-dark: #0D47A1;
    --primary-light: #BBDEFB;
    --accent-color: #FF9800;
    --success-color: #4CAF50;
    --text-dark: #212121;
    --text-light: #757575;
    --background: #FAFAFA;
    --white: #FFFFFF;
    --shadow: rgba(0, 0, 0, 0.1);
    --shadow-hover: rgba(0, 0, 0, 0.15);
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Typography */
h1 {
    font-size: 2rem;
    line-height: 1.2;
    font-weight: 700;
    margin-bottom: 1rem;
}

h2 {
    font-size: 1.75rem;
    line-height: 1.3;
    font-weight: 700;
    margin-bottom: 1rem;
}

h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

p {
    margin-bottom: 1rem;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s;
}

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

/* Header & Navigation */
header {
    background-color: var(--white);
    box-shadow: 0 2px 4px var(--shadow);
    position: sticky;
    top: 0;
    z-index: 1000;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

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

.logo {
    width: 40px;
    height: 40px;
    border-radius: 8px;
}

.app-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-dark);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--text-light);
    font-weight: 500;
    text-decoration: none;
    padding: 0.5rem 0;
    border-bottom: 2px solid transparent;
    transition: all 0.2s;
}

.nav-links a:hover,
.nav-links a.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 4rem 0;
}

.hero .container {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    align-items: center;
}

.hero-content h1 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2rem;
    opacity: 0.95;
}

.download-buttons {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.3s;
    cursor: pointer;
    border: none;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px var(--shadow-hover);
    text-decoration: none;
}

.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;
}

.btn .icon {
    width: 24px;
    height: 24px;
}

.trusted {
    font-size: 0.9rem;
    opacity: 0.9;
}

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.hero-image img {
    width: 200px;
    height: 200px;
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* Features Section */
.features {
    padding: 4rem 0;
}

.section-title {
    text-align: center;
    color: var(--primary-color);
    margin-bottom: 3rem;
}

.features-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
}

.feature-card {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 8px var(--shadow);
    transition: transform 0.3s, box-shadow 0.3s;
}

.feature-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 4px 16px var(--shadow-hover);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    color: var(--primary-color);
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: var(--text-light);
    margin-bottom: 0;
}

/* How It Works Section */
.how-it-works {
    background-color: var(--white);
    padding: 4rem 0;
}

.steps {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-top: 2rem;
}

.step {
    text-align: center;
    padding: 2rem;
}

.step-number {
    width: 60px;
    height: 60px;
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin: 0 auto 1rem;
}

.step h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.step p {
    color: var(--text-light);
    margin-bottom: 0;
}

/* Safety Section */
.safety {
    padding: 4rem 0;
}

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

.safety-features {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 8px var(--shadow);
    margin-bottom: 2rem;
}

.safety-item {
    display: flex;
    gap: 1rem;
    margin-bottom: 1.5rem;
    align-items: flex-start;
}

.safety-item:last-child {
    margin-bottom: 0;
}

.check {
    color: var(--success-color);
    font-size: 1.5rem;
    font-weight: 700;
    flex-shrink: 0;
}

.safety-item p {
    margin-bottom: 0;
}

.safety-cta {
    text-align: center;
    padding: 1.5rem;
    background: var(--primary-light);
    border-radius: 8px;
}

.link {
    font-weight: 600;
    color: var(--primary-color);
}

/* Download CTA Section */
.download-cta {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 4rem 0;
    text-align: center;
}

.download-cta h2 {
    margin-bottom: 1rem;
}

.download-cta p {
    font-size: 1.125rem;
    margin-bottom: 2rem;
}

/* Footer */
footer {
    background-color: var(--text-dark);
    color: var(--white);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section a {
    color: var(--white);
    opacity: 0.8;
    transition: opacity 0.2s;
}

.footer-section a:hover {
    opacity: 1;
    text-decoration: none;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 1rem;
    text-align: center;
    font-size: 0.9rem;
    opacity: 0.8;
}

.footer-bottom p {
    margin-bottom: 0.5rem;
}

/* Privacy Policy Page Styles */
.privacy-policy {
    max-width: 900px;
    padding: 3rem 0;
}

.privacy-policy h1 {
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.last-updated {
    color: var(--text-light);
    font-size: 0.9rem;
    margin-bottom: 2rem;
}

.policy-section {
    background: var(--white);
    padding: 2rem;
    margin-bottom: 2rem;
    border-radius: 12px;
    box-shadow: 0 2px 8px var(--shadow);
}

.policy-section h2 {
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    border-bottom: 2px solid var(--primary-light);
    padding-bottom: 0.5rem;
}

.policy-section h3 {
    color: var(--primary-dark);
    font-size: 1.125rem;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.policy-section ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

.policy-section li {
    margin-bottom: 0.5rem;
    color: var(--text-light);
}

.policy-section ul ul {
    margin-top: 0.5rem;
}

.contact-info {
    list-style: none;
    margin-left: 0;
}

.contact-info li {
    margin-bottom: 0.75rem;
}

.acknowledgment {
    background: var(--primary-light);
    padding: 2rem;
    border-radius: 12px;
    border-left: 4px solid var(--primary-color);
    margin-top: 2rem;
}

.acknowledgment p {
    margin-bottom: 0;
    font-size: 1.05rem;
}

/* Responsive Design */

/* Tablets and up */
@media (min-width: 768px) {
    h1 {
        font-size: 2.5rem;
    }

    h2 {
        font-size: 2rem;
    }

    .hero .container {
        grid-template-columns: 1fr 1fr;
    }

    .hero-content h1 {
        font-size: 3rem;
    }

    .download-buttons {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .btn {
        flex: 1;
        min-width: 200px;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .steps {
        grid-template-columns: repeat(2, 1fr);
    }

    .footer-content {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* Desktop and up */
@media (min-width: 1024px) {
    .hero-content h1 {
        font-size: 3.5rem;
    }

    .features-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .steps {
        grid-template-columns: repeat(4, 1fr);
    }

    .download-buttons {
        flex-wrap: nowrap;
    }
}

/* Print styles */
@media print {
    header,
    footer,
    .download-buttons,
    .download-cta {
        display: none;
    }

    .policy-section {
        page-break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* Accessibility improvements */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .btn-secondary {
        border-width: 3px;
    }

    .feature-card,
    .policy-section,
    .safety-features {
        border: 2px solid var(--text-dark);
    }
}

/* Focus styles for keyboard navigation */
a:focus,
button:focus,
.btn:focus {
    outline: 3px solid var(--primary-color);
    outline-offset: 2px;
}