/* Variables CSS - same as dashboard */
:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-card: #1a1a24;
    --bg-card-hover: #222230;
    --accent-green: #00d4aa;
    --accent-green-dim: rgba(0, 212, 170, 0.15);
    --accent-blue: #4f8cff;
    --accent-purple: #a855f7;
    --accent-orange: #ff9f43;
    --accent-red: #ff6b6b;
    --text-primary: #f0f0f5;
    --text-secondary: #8888a0;
    --text-muted: #55556a;
    --border: #2a2a3a;
    --gradient-main: linear-gradient(135deg, #00d4aa 0%, #4f8cff 100%);
}

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

body {
    font-family: 'DM Sans', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

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

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.logo-icon {
    font-size: 1.5rem;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

.nav-links a:hover {
    color: var(--accent-green);
}

.language-switcher {
    display: flex;
    gap: 0.5rem;
    background: var(--bg-card);
    padding: 0.25rem;
    border-radius: 6px;
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.375rem 0.75rem;
    border-radius: 4px;
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 500;
}

.lang-btn:hover {
    color: var(--text-primary);
}

.lang-btn.active {
    background: var(--gradient-main);
    color: white;
}

/* Buttons */
.btn-primary, .btn-secondary {
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    border: none;
    font-size: 0.9375rem;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(0, 212, 170, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--bg-card);
}

.btn-large {
    padding: 1rem 2.5rem;
    font-size: 1.0625rem;
}

.btn-full {
    width: 100%;
}

/* Hero Section */
.hero {
    padding: 8rem 2rem 4rem;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: radial-gradient(ellipse at top, rgba(0, 212, 170, 0.1) 0%, transparent 50%);
}

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

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1.5rem;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
}

.hero-cta {
    margin-bottom: 3rem;
}

.hero-features {
    display: flex;
    gap: 2rem;
}

.hero-feature {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9375rem;
}

.feature-icon {
    font-size: 1.25rem;
}

.hero-image {
    perspective: 1000px;
}

.dashboard-preview {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
    transform: rotateY(-10deg) rotateX(5deg);
    transition: transform 0.5s;
}

.dashboard-preview:hover {
    transform: rotateY(0deg) rotateX(0deg);
}

.preview-header {
    background: var(--bg-card);
    padding: 1rem;
    border-bottom: 1px solid var(--border);
}

.preview-dots {
    display: flex;
    gap: 0.5rem;
}

.preview-dots span {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: var(--border);
}

.preview-content {
    padding: 0;
    height: auto;
    min-height: 300px;
    position: relative;
    overflow: hidden;
}

.preview-content.fallback {
    padding: 2rem;
}

.preview-screenshot {
    width: 100%;
    height: auto;
    display: block;
}

.preview-chart {
    display: none;
}

.preview-content.fallback .preview-chart {
    display: block;
    width: 100%;
    height: 300px;
    background: linear-gradient(180deg, transparent 0%, var(--accent-green-dim) 100%);
    border-radius: 8px;
    position: relative;
}

.preview-chart::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-main);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Section Title */
.section-title {
    font-size: 2.5rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1rem;
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 1.125rem;
    margin-bottom: 3rem;
}

/* Features Section */
.features {
    padding: 6rem 2rem;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    transition: all 0.3s;
}

.feature-card:hover {
    background: var(--bg-card-hover);
    transform: translateY(-4px);
    border-color: var(--accent-green);
}

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

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

.feature-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* Screenshots Section */
.screenshots {
    padding: 6rem 2rem;
    background: var(--bg-secondary);
}

.screenshots-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.screenshot-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s;
    cursor: pointer;
    position: relative;
}

.screenshot-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.4);
    border-color: var(--accent-green);
}

.screenshot-img {
    width: 100%;
    height: auto;
    aspect-ratio: 16/10;
    object-fit: cover;
    object-position: top left;
    display: block;
    transition: transform 0.5s ease;
}

.screenshot-card:hover .screenshot-img {
    transform: scale(1.02);
}

.screenshot-caption {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 1rem 1.25rem;
    background: linear-gradient(transparent, rgba(0, 0, 0, 0.9));
    display: flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-primary);
    font-weight: 500;
}

.caption-icon {
    font-size: 1.25rem;
}

.screenshot-placeholder {
    aspect-ratio: 16/9;
    background: var(--bg-primary);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
}

.placeholder-icon {
    font-size: 4rem;
    opacity: 0.5;
}

.screenshot-placeholder p {
    color: var(--text-secondary);
    font-weight: 500;
}

/* Lightbox for screenshots */
.screenshot-lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 3000;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    cursor: zoom-out;
}

.screenshot-lightbox.active {
    display: flex;
}

.screenshot-lightbox img {
    max-width: 95%;
    max-height: 90vh;
    border-radius: 8px;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.screenshot-lightbox-close {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: var(--bg-card);
    border: 1px solid var(--border);
    color: var(--text-primary);
    width: 48px;
    height: 48px;
    border-radius: 50%;
    font-size: 1.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.screenshot-lightbox-close:hover {
    background: var(--accent-red);
    border-color: var(--accent-red);
}

/* About Section */
.about {
    padding: 6rem 2rem;
}

.about-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 4rem;
    align-items: start;
}

.about-text h2 {
    font-size: 2.5rem;
    margin-bottom: 2rem;
}

.about-feature {
    margin-bottom: 2rem;
}

.about-feature h4 {
    font-size: 1.125rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.about-feature p {
    color: var(--text-secondary);
    line-height: 1.7;
}

.about-stats {
    display: grid;
    gap: 1.5rem;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    text-align: center;
    transition: all 0.3s;
}

.stat-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--accent-green);
}

.stat-value {
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-main);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: var(--text-secondary);
    font-weight: 500;
}

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

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1.5rem;
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.125rem;
    font-weight: 600;
}

.footer-links {
    display: flex;
    gap: 2rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s;
}

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

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

/* Modal */
.modal-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(4px);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    padding: 2rem;
}

.modal-overlay.active {
    display: flex;
}

.modal-container {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 2.5rem;
    max-width: 480px;
    width: 100%;
    position: relative;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}

.modal-close {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 2rem;
    cursor: pointer;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: all 0.3s;
}

.modal-close:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.modal-tabs {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
}

.tab-btn {
    flex: 1;
    padding: 0.75rem;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
}

.tab-btn:hover {
    border-color: var(--accent-green);
    color: var(--text-primary);
}

.tab-btn.active {
    background: var(--gradient-main);
    border-color: transparent;
    color: white;
}

.auth-form {
    display: none;
}

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

.google-signin {
    margin-bottom: 1.5rem;
}

.btn-google {
    width: 100%;
    padding: 0.875rem 1.5rem;
    background: white;
    color: #333;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    transition: all 0.3s;
    font-size: 0.9375rem;
}

.btn-google:hover {
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    transform: translateY(-1px);
}

.google-icon {
    width: 20px;
    height: 20px;
}

.divider {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin: 1.5rem 0;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.divider::before,
.divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--border);
}

.form-group {
    margin-bottom: 1.25rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.9375rem;
}

.form-group input {
    width: 100%;
    padding: 0.875rem 1rem;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 0.9375rem;
    transition: all 0.3s;
}

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

.form-group small {
    display: block;
    margin-top: 0.5rem;
    color: var(--text-muted);
    font-size: 0.8125rem;
}

.password-strength {
    height: 4px;
    background: var(--border);
    border-radius: 2px;
    margin-top: 0.5rem;
    overflow: hidden;
}

.password-strength::after {
    content: '';
    display: block;
    height: 100%;
    width: 0%;
    background: var(--accent-red);
    transition: all 0.3s;
}

.password-strength.weak::after {
    width: 33%;
    background: var(--accent-red);
}

.password-strength.medium::after {
    width: 66%;
    background: var(--accent-orange);
}

.password-strength.strong::after {
    width: 100%;
    background: var(--accent-green);
}

.error-message {
    color: var(--accent-red);
    font-size: 0.875rem;
    margin-bottom: 1rem;
    padding: 0.75rem;
    background: rgba(255, 107, 107, 0.1);
    border: 1px solid var(--accent-red);
    border-radius: 6px;
    display: none;
}

.error-message.active {
    display: block;
}

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

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

    .hero-image {
        order: -1;
    }

    .about-content {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-links {
        flex-wrap: wrap;
        justify-content: center;
    }

    .hero {
        padding: 6rem 1rem 3rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-subtitle {
        font-size: 1.0625rem;
    }

    .hero-features {
        flex-direction: column;
        gap: 1rem;
    }

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

    .section-title {
        font-size: 2rem;
    }

    .modal-container {
        padding: 2rem;
    }

    .modal-tabs {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .nav-links a {
        display: none;
    }

    .modal-overlay {
        padding: 1rem;
    }

    .modal-container {
        padding: 1.5rem;
    }
}

/* Loading State */
.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* Smooth Scrolling */
html {
    scroll-behavior: smooth;
}