:root {
    --bg-color: #0f172a;
    --text-light: #f8fafc;
    --text-muted: #94a3b8;
    --primary: #3b82f6;
    --secondary: #0ea5e9;
    --surface-dark: rgba(30, 41, 59, 0.7);
    --accent-green: #22c55e;
    --accent-amber: #f59e0b;
    --accent-red: #ef4444;
    --accent-purple: #a855f7;
}

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

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

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

/* Glassmorphism Utilities */
.glass {
    background: rgba(30, 41, 59, 0.4);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid rgba(255, 255, 255, 0.05);
    border-radius: 12px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

/* Typography */
h1, h2, h3, h4 {
    margin-bottom: 15px;
}

.section-heading {
    text-align: center;
    font-size: 2.5rem;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-light);
}

.section-sub {
    text-align: center;
    color: var(--text-muted);
    margin-bottom: 50px;
    font-size: 1.1rem;
}

/* Background Pattern */
.network-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background-image:
        radial-gradient(circle at center, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
        linear-gradient(rgba(15, 23, 42, 0.9), rgba(15, 23, 42, 1)),
        url('data:image/svg+xml;utf8,<svg width="40" height="40" xmlns="http://www.w3.org/2000/svg"><path d="M0 0h40v40H0z" fill="none"/><path d="M20 0v40M0 20h40" stroke="rgba(255,255,255,0.02)" stroke-width="1"/></svg>');
    z-index: -1;
}

/* Header */
.main-header {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 18px 40px;
    background-color: rgba(15, 23, 42, 0.85);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(59, 130, 246, 0.3);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-center {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 14px;
}

.header-center h1 {
    font-family: 'Playfair Display', serif;
    font-size: 1.1rem;
    color: var(--text-muted);
    font-weight: 700;
    margin: 0;
    white-space: nowrap;
}

.header-separator {
    color: rgba(59, 130, 246, 0.5);
    font-size: 1.2rem;
    font-weight: 300;
}

@media (max-width: 768px) {
    .header-center {
        flex-direction: column;
        gap: 4px;
    }
    .header-center h1 {
        font-size: 0.85rem;
        white-space: normal;
        text-align: center;
    }
    .header-separator {
        display: none;
    }
}

/* Hero Section */
.hero {
    min-height: 80vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 60px 20px;
}

.sub-title {
    color: var(--secondary);
    font-size: 1.2rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 3px;
    margin-bottom: 5px;
}

.project-title {
    font-family: 'Poppins', sans-serif;
    font-weight: 900;
    font-size: 5rem;
    background: linear-gradient(90deg, var(--primary) 0%, #38bdf8 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    color: transparent;
    line-height: 1.1;
    margin: 10px 0 30px;
    letter-spacing: -2px;
}

.hero-intro {
    font-size: 1.3rem;
    color: var(--text-muted);
    max-width: 800px;
    margin: 0 auto 40px;
}

.tech-stack {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    max-width: 800px;
    margin: 0 auto;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background-color: var(--surface-dark);
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: transform 0.3s ease, border-color 0.3s ease;
    cursor: pointer;
    color: var(--text-light);
}

.badge:hover {
    transform: translateY(-3px);
    border-color: var(--secondary);
}

.badge i {
    width: 16px;
    height: 16px;
    color: var(--secondary);
}

.link-badge {
    text-decoration: none;
    padding: 10px 22px;
    font-size: 1rem;
}

/* Introduction Section */
.intro-section {
    padding: 100px 0;
    background: rgba(0, 0, 0, 0.15);
}

.intro-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.intro-block {
    padding: 40px 30px;
    text-align: left;
}

.intro-block h3 {
    color: var(--text-light);
    font-size: 1.3rem;
}

.intro-block p {
    color: var(--text-muted);
    line-height: 1.8;
}

.intro-block strong {
    color: var(--text-light);
}

@media (max-width: 768px) {
    .intro-content {
        grid-template-columns: 1fr;
    }
}

/* Screenshots Section */
.screenshots-section {
    padding: 100px 0;
}

.screenshot-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 24px;
}

.screenshot-card {
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid rgba(255, 255, 255, 0.08);
    background: rgba(30, 41, 59, 0.3);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.screenshot-card:hover {
    transform: translateY(-6px);
    box-shadow: 0 12px 40px rgba(59, 130, 246, 0.15);
}

.screenshot-card img {
    width: 100%;
    display: block;
    aspect-ratio: 16/10;
    object-fit: cover;
    object-position: top;
}

.screenshot-label {
    padding: 14px 18px;
    text-align: center;
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-muted);
    background: rgba(15, 23, 42, 0.8);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* Features Section */
.features {
    padding: 100px 0;
    background: rgba(0, 0, 0, 0.15);
}

.feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 30px;
    justify-content: center;
}

.feature-card {
    padding: 40px 30px;
    transition: transform 0.4s ease;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: rgba(59, 130, 246, 0.2);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 20px;
    color: var(--secondary);
}

.feature-card p {
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.7;
}

/* Architecture Section */
.architecture-section {
    padding: 100px 0;
}

.arch-diagram {
    max-width: 700px;
    margin: 0 auto;
    padding: 50px 40px;
    text-align: center;
}

.arch-row {
    display: flex;
    justify-content: center;
}

.arch-box {
    padding: 25px 30px;
    border-radius: 12px;
    width: 100%;
    max-width: 500px;
    text-align: center;
}

.arch-box h4 {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 1.2rem;
    margin-bottom: 5px;
}

.arch-box h4 i {
    width: 20px;
    height: 20px;
}

.arch-box span {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.arch-details {
    margin-top: 10px;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.arch-deploy {
    margin-top: 8px;
    font-size: 0.8rem;
    color: var(--accent-green);
}

.arch-frontend {
    background: rgba(59, 130, 246, 0.15);
    border: 1px solid rgba(59, 130, 246, 0.3);
}

.arch-frontend h4 { color: #60a5fa; }

.arch-backend {
    background: rgba(168, 85, 247, 0.15);
    border: 1px solid rgba(168, 85, 247, 0.3);
}

.arch-backend h4 { color: #c084fc; }

.arch-database {
    background: rgba(34, 197, 94, 0.15);
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.arch-database h4 { color: #4ade80; }

.arch-arrow {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 15px 0;
    color: var(--text-muted);
    font-size: 0.85rem;
}

.arch-arrow i {
    width: 20px;
    height: 20px;
    color: rgba(255, 255, 255, 0.3);
}

/* Database Section */
.database-section {
    padding: 100px 0;
    background: rgba(0, 0, 0, 0.15);
}

.db-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 20px;
}

.db-card {
    padding: 25px;
    text-align: left;
    transition: transform 0.3s ease;
}

.db-card:hover {
    transform: translateY(-5px);
}

.db-card h4 {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--secondary);
    font-size: 1rem;
    font-family: monospace;
}

.db-card h4 i {
    width: 16px;
    height: 16px;
}

.db-card p {
    color: var(--text-muted);
    font-size: 0.85rem;
    line-height: 1.6;
}

/* API Section */
.api-section {
    padding: 100px 0;
}

.api-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 24px;
}

.api-group {
    padding: 25px;
}

.api-group h4 {
    font-family: monospace;
    color: var(--secondary);
    font-size: 1.1rem;
    margin-bottom: 15px;
    padding-bottom: 10px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.api-endpoint {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 6px 0;
    font-size: 0.85rem;
    color: var(--text-muted);
    font-family: monospace;
}

.method {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    flex-shrink: 0;
}

.method.get { background: rgba(34, 197, 94, 0.2); color: #4ade80; }
.method.post { background: rgba(59, 130, 246, 0.2); color: #60a5fa; }
.method.put { background: rgba(245, 158, 11, 0.2); color: #fbbf24; }
.method.delete { background: rgba(239, 68, 68, 0.2); color: #f87171; }

/* Project Structure */
.project-structure {
    padding: 100px 0;
    background: rgba(0, 0, 0, 0.2);
}

.structure-box {
    padding: 40px;
    overflow-x: auto;
    text-align: left;
    margin: 0 auto;
    max-width: 800px;
}

.tree-container {
    font-family: monospace;
    font-size: 1.1rem;
    line-height: 1.8;
    color: #e2e8f0;
}

.tree-branch {
    color: #475569;
}

.tree-node {
    color: #93c5fd;
    font-weight: bold;
}

.tree-comment {
    color: #64748b;
    font-style: italic;
    margin-left: 10px;
}

/* Testing Section */
.testing-section {
    padding: 100px 0;
}

.testing-section code {
    background: rgba(59, 130, 246, 0.15);
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.85rem;
    color: #93c5fd;
}

/* Team */
.team {
    padding: 100px 0;
    background: rgba(0, 0, 0, 0.15);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 30px;
    justify-content: center;
}

.team-card {
    padding: 30px;
    text-align: center;
    transition: transform 0.3s ease;
}

.team-card:hover {
    transform: translateY(-5px);
}

.team-card h3 {
    margin-bottom: 5px;
    color: #e2e8f0;
}

.team-card .reg-no {
    color: var(--secondary);
    font-weight: 600;
    margin-bottom: 15px;
}

.team-card a {
    color: var(--text-muted);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    transition: color 0.3s;
}

.team-card a:hover {
    color: var(--text-light);
}

.team-card a i {
    width: 14px;
    height: 14px;
}

/* Links Section */
.links-section {
    padding: 80px 0;
}

/* Footer */
.main-footer {
    text-align: center;
    padding: 40px;
    color: var(--text-muted);
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

/* Responsive */
@media (max-width: 600px) {
    .project-title {
        font-size: 3rem;
    }
    .section-heading {
        font-size: 1.8rem;
    }
    .screenshot-grid {
        grid-template-columns: 1fr;
    }
    .arch-diagram {
        padding: 30px 20px;
    }
}