/* PulseCrypto Website Styles */
/* Design: Tech/Dark Theme with Neon Accents */

:root {
    --bg-primary: #0a0f1c;
    --bg-secondary: #111827;
    --bg-card: #1a2332;
    --bg-card-hover: #222d3f;
    --accent-primary: #10b981;
    --accent-secondary: #3b82f6;
    --accent-tertiary: #06b6d4;
    --text-primary: #f9fafb;
    --text-secondary: #9ca3af;
    --text-muted: #6b7280;
    --danger: #ef4444;
    --warning: #f59e0b;
    --border-color: #374151;
    --glow-green: rgba(16, 185, 129, 0.3);
    --glow-blue: rgba(59, 130, 246, 0.3);
}

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

html {
    scroll-behavior: smooth;
}

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

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: clamp(2rem, 5vw, 3.5rem); }
h2 { font-size: clamp(1.5rem, 4vw, 2.5rem); }
h3 { font-size: clamp(1.25rem, 3vw, 1.75rem); }

p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

a {
    color: var(--accent-tertiary);
    text-decoration: none;
    transition: color 0.3s ease;
}

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

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 15, 28, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    z-index: 1000;
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    flex-shrink: 0;
}

.nav-logo .logo-icon {
    display: flex;
    align-items: flex-end;
    gap: 2px;
    height: 28px;
}

.nav-logo .bar {
    width: 4px;
    border-radius: 2px;
}

.nav-logo .bar-1 { height: 12px; background: var(--accent-primary); }
.nav-logo .bar-2 { height: 20px; background: var(--accent-primary); }
.nav-logo .bar-3 { height: 28px; background: var(--accent-primary); }
.nav-logo .bar-4 { height: 16px; background: var(--danger); }
.nav-logo .bar-5 { height: 10px; background: var(--danger); }

.nav-logo-text {
    display: flex;
    flex-direction: column;
    line-height: 1;
}

.nav-logo-text .pulse {
    color: var(--accent-primary);
    font-size: 0.9rem;
}

.nav-logo-text .crypto {
    color: var(--danger);
    font-size: 0.9rem;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
    align-items: center;
    flex-wrap: wrap;
}

.nav-menu a {
    color: var(--text-secondary);
    font-weight: 500;
    padding: 0.5rem 0;
    position: relative;
    white-space: nowrap;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: width 0.3s ease;
}

.nav-menu a:hover::after,
.nav-menu a.active::after {
    width: 100%;
}

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

.hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    cursor: pointer;
    padding: 5px;
}

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, var(--bg-primary) 0%, #0d1f2d 50%, var(--bg-primary) 100%);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 20%;
    left: -10%;
    width: 40%;
    height: 40%;
    background: radial-gradient(circle, var(--glow-blue) 0%, transparent 70%);
    filter: blur(60px);
    pointer-events: none;
}

.hero::after {
    content: '';
    position: absolute;
    bottom: 10%;
    right: -10%;
    width: 35%;
    height: 35%;
    background: radial-gradient(circle, var(--glow-green) 0%, transparent 70%);
    filter: blur(60px);
    pointer-events: none;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

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

.hero-text h1 {
    margin-bottom: 1.5rem;
}

.hero-text h1 span {
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-tertiary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-text p {
    font-size: 1.125rem;
    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;
    margin: 0 auto;
}

.device-frame {
    background: linear-gradient(145deg, #2a3544, #1a2332);
    border-radius: 36px;
    padding: 12px;
    box-shadow:
        0 25px 50px -12px rgba(0, 0, 0, 0.5),
        inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.device-screen {
    border-radius: 28px;
    overflow: hidden;
    background: var(--bg-secondary);
}

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.75rem;
    border-radius: 10px;
    font-weight: 600;
    font-size: 1rem;
    text-decoration: none;
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
    gap: 0.5rem;
    text-align: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), #059669);
    color: white;
    box-shadow: 0 4px 15px var(--glow-green);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px var(--glow-green);
    color: white;
}

.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(--accent-primary);
    color: var(--text-primary);
}

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* Features Section */
.features {
    padding: 6rem 0;
    background: var(--bg-secondary);
}

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-header p {
    max-width: 600px;
    margin: 0 auto;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 2rem;
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
    text-align: left;
}

.feature-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent-primary);
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
}

.feature-icon {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    margin-bottom: 1.5rem;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-tertiary));
}

.feature-card h3 {
    margin-bottom: 0.75rem;
}

.feature-card p {
    margin-bottom: 0;
}

/* Screenshots Section */
.screenshots {
    padding: 6rem 0;
    background: var(--bg-primary);
    max-height: 500px;
    overflow: hidden;
}

.screenshot-carousel {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    height: 380px;
}

.carousel-container {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 2rem;
    height: 100%;
}

.carousel-wrapper {
    position: relative;
    width: 240px;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-slide {
    position: absolute;
    opacity: 0;
    transition: all 0.5s ease;
    transform: scale(0.8);
}

.carousel-slide.active {
    opacity: 1;
    transform: scale(1);
}

.carousel-device {
    background: linear-gradient(145deg, #2a3544, #1a2332);
    border-radius: 28px;
    padding: 8px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
}

.carousel-device img {
    width: 200px;
    height: auto;
    max-height: 340px;
    object-fit: cover;
    border-radius: 22px;
    display: block;
    cursor: pointer;
    filter: blur(0);
    transition: filter 0.3s ease;
}

.carousel-device img.loading {
    filter: blur(5px);
}

.carousel-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
    font-size: 1.25rem;
    flex-shrink: 0;
}

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

.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 0.3s ease;
}

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

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

.lightbox.active {
    display: flex;
}

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

.lightbox-content img {
    max-width: 100%;
    max-height: 85vh;
    border-radius: 16px;
}

.lightbox-close {
    position: absolute;
    top: -40px;
    right: 0;
    background: none;
    border: none;
    color: white;
    font-size: 2rem;
    cursor: pointer;
}

/* Stats Section */
.stats {
    padding: 4rem 0;
    background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.stat-item h3 {
    font-size: 2.5rem;
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-tertiary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-item p {
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* CTA Section */
.cta {
    padding: 6rem 0;
    background: var(--bg-primary);
    text-align: center;
}

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

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

.cta p {
    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: 4rem 0 2rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

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

.footer-brand p {
    margin-top: 1rem;
    font-size: 0.9rem;
}

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

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

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

.footer-links a {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.footer-links a:hover {
    color: var(--accent-primary);
}

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

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

/* Page Header (for inner pages) */
.page-header {
    padding: 8rem 0 4rem;
    background: linear-gradient(135deg, var(--bg-primary) 0%, #0d1f2d 100%);
    text-align: center;
}

.page-header h1 {
    margin-bottom: 1rem;
}

.page-header p {
    max-width: 600px;
    margin: 0 auto;
}

/* Content Section (for Privacy, Terms) */
.content-section {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

.content-wrapper {
    max-width: 800px;
    margin: 0 auto;
    background: var(--bg-card);
    border-radius: 16px;
    padding: 3rem;
    border: 1px solid var(--border-color);
}

.content-wrapper h2 {
    font-size: 1.5rem;
    margin-top: 2rem;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border-color);
}

.content-wrapper h2:first-child {
    margin-top: 0;
}

.content-wrapper h3 {
    font-size: 1.25rem;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.content-wrapper p {
    text-align: left;
    margin-bottom: 1rem;
}

.content-wrapper ul,
.content-wrapper ol {
    margin-bottom: 1rem;
    padding-left: 1.5rem;
}

.content-wrapper li {
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
    text-align: left;
}

.content-wrapper a {
    color: var(--accent-tertiary);
}

.content-wrapper a:hover {
    color: var(--accent-primary);
}

.last-updated {
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

/* Contact Form */
.contact-section {
    padding: 4rem 0;
    background: var(--bg-secondary);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: 3rem;
    align-items: start;
}

.contact-info {
    text-align: left;
}

.contact-info h2 {
    margin-bottom: 1rem;
}

.contact-info p {
    margin-bottom: 2rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    color: var(--text-secondary);
}

.contact-item span:first-child {
    font-size: 1.25rem;
}

.contact-form-wrapper {
    background: var(--bg-card);
    border-radius: 16px;
    padding: 2.5rem;
    border: 1px solid var(--border-color);
}

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

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

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    border-radius: 10px;
    border: 1px solid var(--border-color);
    background: var(--bg-secondary);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px var(--glow-green);
}

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

.form-group input[type="file"] {
    padding: 0.75rem;
}

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

.form-success {
    display: none;
    text-align: center;
    padding: 2rem;
}

.form-success.active {
    display: block;
}

.form-success h3 {
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
}

/* Privacy Accept Button (Flutter Integration) */
.privacy-accept-container {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1.5rem;
    background: rgba(10, 15, 28, 0.98);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--accent-primary);
    z-index: 3000;
    text-align: center;
}

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

.privacy-accept-btn {
    background: linear-gradient(135deg, var(--accent-primary), #059669);
    color: white;
    font-size: 1.125rem;
    font-weight: 700;
    padding: 1rem 3rem;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    box-shadow: 0 4px 20px var(--glow-green);
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 200px;
}

.privacy-accept-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 25px var(--glow-green);
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

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

    .hero-text p {
        margin-left: auto;
        margin-right: auto;
    }

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

    .hero-device {
        order: -1;
    }

    .device-mockup {
        max-width: 220px;
    }

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

    .contact-info {
        text-align: center;
    }
}

@media (max-width: 768px) {
    .nav-menu {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-secondary);
        flex-direction: column;
        padding: 1rem;
        gap: 0;
        border-bottom: 1px solid var(--border-color);
    }

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

    .nav-menu li {
        width: 100%;
    }

    .nav-menu a {
        display: block;
        padding: 1rem;
        text-align: center;
    }

    .hamburger {
        display: flex;
    }

    .hero {
        padding: 7rem 0 3rem;
        min-height: auto;
    }

    .device-mockup {
        max-width: 180px;
    }

    .carousel-device img {
        width: 160px;
        max-height: 280px;
    }

    .screenshot-carousel {
        height: 320px;
    }

    .screenshots {
        max-height: 420px;
    }

    .features {
        padding: 4rem 0;
    }

    .content-wrapper {
        padding: 1.5rem;
        margin: 0 1rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-brand {
        max-width: 100%;
    }

    .footer-bottom {
        flex-direction: column;
        text-align: center;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 1rem;
    }

    .hero-buttons {
        flex-direction: column;
        width: 100%;
    }

    .hero-buttons .btn {
        width: 100%;
    }

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

    .carousel-device img {
        width: 140px;
        max-height: 240px;
    }

    .screenshot-carousel {
        height: 280px;
    }

    .screenshots {
        max-height: 380px;
    }

    .carousel-btn {
        width: 40px;
        height: 40px;
        font-size: 1rem;
    }

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

    .cta-buttons .btn {
        width: 100%;
    }
}

/* Utilities */
.text-gradient {
    background: linear-gradient(90deg, var(--accent-primary), var(--accent-tertiary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    border: 0;
}

/* AOS Animation Adjustments */
[data-aos] {
    pointer-events: none;
}

[data-aos].aos-animate {
    pointer-events: auto;
}