/* 1978 Price Tracker - Tech/Gaming Theme */
/* Color palette inspired by app: Dark background, yellow/gold accents, green highlights */

:root {
    --bg-primary: #0d1117;
    --bg-secondary: #161b22;
    --bg-tertiary: #21262d;
    --text-primary: #f0f6fc;
    --text-secondary: #8b949e;
    --accent-yellow: #f0c419;
    --accent-green: #3fb950;
    --accent-green-dark: #238636;
    --border-color: #30363d;
    --link-color: #58a6ff;
    --gradient-start: #f0c419;
    --gradient-end: #3fb950;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans', Helvetica, Arial, sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

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

a:hover {
    color: var(--accent-yellow);
}

/* Navigation */
.navbar {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-yellow);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    white-space: nowrap;
}

.nav-logo-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--accent-yellow), var(--accent-green));
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1rem;
    flex-shrink: 0;
}

.nav-menu {
    display: flex;
    gap: 0.5rem;
    list-style: none;
    flex-wrap: wrap;
    justify-content: center;
}

.nav-menu a {
    color: var(--text-secondary);
    padding: 0.5rem 1rem;
    border-radius: 6px;
    transition: all 0.2s ease;
    font-weight: 500;
    white-space: nowrap;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--text-primary);
    background-color: var(--bg-tertiary);
}

/* Hero Section */
.hero {
    padding: 4rem 2rem;
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(240, 196, 25, 0.1) 0%, transparent 70%);
    pointer-events: none;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-content {
    text-align: left;
}

.hero-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-title .highlight {
    background: linear-gradient(135deg, var(--accent-yellow), var(--accent-green));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    max-width: 500px;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

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

/* Device Mockup */
.device-mockup {
    position: relative;
    max-width: 280px;
    width: 100%;
}

.device-frame {
    background: linear-gradient(145deg, #2d333b, #1c2128);
    border-radius: 36px;
    padding: 12px;
    box-shadow:
        0 25px 50px -12px rgba(0, 0, 0, 0.5),
        0 0 0 1px rgba(240, 196, 25, 0.1),
        inset 0 1px 0 rgba(255, 255, 255, 0.05);
}

.device-screen {
    border-radius: 24px;
    overflow: hidden;
    background: var(--bg-primary);
}

.device-screen img {
    width: 100%;
    height: auto;
    display: block;
}

.device-notch {
    position: absolute;
    top: 12px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 24px;
    background: #0d1117;
    border-radius: 0 0 12px 12px;
    z-index: 10;
}

/* Buttons */
.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;
    transition: all 0.2s ease;
    cursor: pointer;
    border: none;
    text-align: center;
    min-height: 48px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-yellow), #d4a617);
    color: #000;
    box-shadow: 0 4px 14px rgba(240, 196, 25, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(240, 196, 25, 0.4);
    color: #000;
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
    border: 2px solid var(--text-secondary);
    box-shadow: 0 2px 8px rgba(255, 255, 255, 0.1);
}

.btn-secondary:hover {
    background: var(--border-color);
    color: var(--text-primary);
    border-color: var(--text-primary);
}

.btn-success {
    background: linear-gradient(135deg, var(--accent-green), var(--accent-green-dark));
    color: #fff;
    box-shadow: 0 4px 14px rgba(63, 185, 80, 0.3);
}

.btn-success:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(63, 185, 80, 0.4);
    color: #fff;
}

/* Features Section */
.features {
    padding: 5rem 2rem;
    background: var(--bg-secondary);
}

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

.section-header {
    text-align: center;
    margin-bottom: 3rem;
}

.section-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    margin-bottom: 1rem;
}

.section-subtitle {
    color: var(--text-secondary);
    font-size: 1.125rem;
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
}

.feature-card {
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-yellow);
    box-shadow: 0 8px 30px rgba(240, 196, 25, 0.1);
}

.feature-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--accent-yellow), var(--accent-green));
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    text-align: left;
    line-height: 1.6;
}

/* Screenshots Section */
.screenshots {
    padding: 5rem 2rem;
    background: var(--bg-primary);
    max-height: 500px;
    overflow: hidden;
}

.screenshots-container {
    max-width: 900px;
    margin: 0 auto;
}

.carousel {
    position: relative;
    height: 350px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-track {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    width: 100%;
}

.carousel-slide {
    display: none;
    justify-content: center;
    align-items: center;
    height: 100%;
    animation: fadeIn 0.3s ease;
}

.carousel-slide.active {
    display: flex;
}

@keyframes fadeIn {
    from { opacity: 0; transform: scale(0.95); }
    to { opacity: 1; transform: scale(1); }
}

.carousel-device {
    max-width: 180px;
    width: 100%;
}

.carousel-device .device-frame {
    padding: 8px;
    border-radius: 28px;
}

.carousel-device .device-screen {
    border-radius: 20px;
}

.carousel-device .device-screen img {
    cursor: pointer;
    transition: transform 0.2s ease;
}

.carousel-device .device-screen img:hover {
    transform: scale(1.02);
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-primary);
    font-size: 1.25rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
}

.carousel-btn:hover {
    background: var(--accent-yellow);
    color: #000;
    border-color: var(--accent-yellow);
}

.carousel-btn.prev {
    left: 0;
}

.carousel-btn.next {
    right: 0;
}

.carousel-dots {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1.5rem;
}

.carousel-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-color);
    cursor: pointer;
    transition: all 0.2s ease;
}

.carousel-dot.active {
    background: var(--accent-yellow);
    transform: scale(1.2);
}

/* Lightbox */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.95);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.lightbox.active {
    display: flex;
}

.lightbox-content {
    max-width: 400px;
    max-height: 90vh;
    position: relative;
}

.lightbox-content img {
    max-width: 100%;
    max-height: 85vh;
    border-radius: 12px;
}

.lightbox-close {
    position: absolute;
    top: -40px;
    right: 0;
    width: 36px;
    height: 36px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 50%;
    color: var(--text-primary);
    font-size: 1.25rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-close:hover {
    background: var(--accent-yellow);
    color: #000;
}

/* CTA Section */
.cta {
    padding: 5rem 2rem;
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-tertiary) 100%);
    text-align: center;
}

.cta-content {
    max-width: 600px;
    margin: 0 auto;
}

.cta h2 {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    margin-bottom: 1rem;
}

.cta p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.cta-buttons {
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 3rem 2rem 1.5rem;
}

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

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h4 {
    color: var(--text-primary);
    font-size: 1rem;
    margin-bottom: 1rem;
}

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

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

.footer-section ul a {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.footer-section ul a:hover {
    color: var(--accent-yellow);
}

.footer-section p {
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-align: left;
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
}

/* Page Content */
.page-header {
    padding: 4rem 2rem 2rem;
    background: var(--bg-secondary);
    text-align: center;
}

.page-header h1 {
    font-size: clamp(2rem, 5vw, 3rem);
    margin-bottom: 0.5rem;
}

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

.page-content {
    padding: 3rem 2rem;
    background: var(--bg-primary);
}

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

.content-container h2 {
    font-size: 1.5rem;
    margin: 2rem 0 1rem;
    color: var(--accent-yellow);
}

.content-container h3 {
    font-size: 1.25rem;
    margin: 1.5rem 0 0.75rem;
    color: var(--text-primary);
}

.content-container p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    text-align: left;
}

.content-container ul,
.content-container ol {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    padding-left: 1.5rem;
    text-align: left;
}

.content-container li {
    margin-bottom: 0.5rem;
}

.content-container a {
    color: var(--link-color);
}

.last-updated {
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 3rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
}

/* Contact Form */
.contact-section {
    padding: 4rem 2rem;
    background: var(--bg-primary);
}

.contact-container {
    max-width: 600px;
    margin: 0 auto;
}

.contact-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
}

.contact-card h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    text-align: center;
}

.contact-card .subtitle {
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 500;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-yellow);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.form-group input[type="file"] {
    padding: 0.75rem;
    color: var(--text-primary);
}

.form-group input[type="file"]::file-selector-button {
    background: var(--accent-yellow);
    color: #000;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    margin-right: 1rem;
    font-weight: 500;
}

/* File input placeholder text styling */
.form-group input[type="file"]::-webkit-file-upload-button {
    background: var(--accent-yellow);
    color: #000;
    border: none;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    cursor: pointer;
    margin-right: 1rem;
    font-weight: 500;
}

.form-submit {
    text-align: center;
}

.form-submit .btn {
    width: 100%;
    max-width: 300px;
}

.form-message {
    text-align: center;
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
    display: none;
}

.form-message.success {
    background: rgba(63, 185, 80, 0.1);
    border: 1px solid var(--accent-green);
    color: var(--accent-green);
    display: block;
}

.form-message.error {
    background: rgba(248, 81, 73, 0.1);
    border: 1px solid #f85149;
    color: #f85149;
    display: block;
}

/* Privacy Accept Button (Flutter Integration) */
.privacy-accept-container {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 1rem 2rem;
    z-index: 1000;
    display: none;
}

.privacy-accept-container.visible {
    display: block;
}

.privacy-accept-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--accent-green), var(--accent-green-dark));
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 1.125rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    box-shadow: 0 4px 14px rgba(63, 185, 80, 0.4);
}

.privacy-accept-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(63, 185, 80, 0.5);
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero-container {
        grid-template-columns: 1fr;
        gap: 3rem;
        text-align: center;
    }

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

    .hero-description {
        margin: 0 auto 2rem;
    }

    .hero-buttons {
        justify-content: center;
    }

    .device-mockup {
        max-width: 240px;
    }
}

@media (max-width: 768px) {
    .navbar {
        padding: 1rem;
    }

    .nav-container {
        justify-content: center;
    }

    .nav-menu {
        width: 100%;
        justify-content: center;
    }

    .nav-menu a {
        padding: 0.5rem 0.75rem;
        font-size: 0.875rem;
    }

    .hero {
        padding: 3rem 1rem;
    }

    .hero-title {
        font-size: clamp(1.75rem, 6vw, 2.5rem);
    }

    .features {
        padding: 3rem 1rem;
    }

    .screenshots {
        padding: 3rem 1rem;
        max-height: 400px;
    }

    .carousel {
        height: 280px;
    }

    .carousel-device {
        max-width: 150px;
    }

    .carousel-btn {
        width: 36px;
        height: 36px;
        font-size: 1rem;
    }

    .cta {
        padding: 3rem 1rem;
    }

    .footer {
        padding: 2rem 1rem 1rem;
    }

    .page-content {
        padding: 2rem 1rem;
    }

    .contact-card {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .nav-logo {
        font-size: 1.25rem;
    }

    .nav-logo-icon {
        width: 28px;
        height: 28px;
    }

    .nav-menu a {
        padding: 0.4rem 0.5rem;
        font-size: 0.8rem;
    }

    .hero-buttons {
        flex-direction: column;
        align-items: center;
    }

    .btn {
        width: 100%;
        max-width: 280px;
    }

    .device-mockup {
        max-width: 200px;
    }

    .carousel-device {
        max-width: 130px;
    }

    .cta-buttons {
        flex-direction: column;
        align-items: center;
    }
}

/* Progressive Image Loading */
.img-loading {
    filter: blur(5px);
    transition: filter 0.3s ease;
}

.img-loaded {
    filter: blur(0);
}

/* Touch-friendly improvements */
@media (hover: none) {
    .feature-card:hover {
        transform: none;
    }

    .btn:hover {
        transform: none;
    }

    .carousel-btn:active {
        background: var(--accent-yellow);
        color: #000;
    }
}