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

:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --secondary: #10b981;
    --dark: #0f172a;
    --darker: #020617;
    --card: #1e293b;
    --card-hover: #334155;
    --text: #f8fafc;
    --text-muted: #94a3b8;
    --border: #334155;
    --danger: #ef4444;
    --success: #22c55e;
}

body {
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: var(--darker);
    color: var(--text);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* Navbar */
.navbar {
    background: var(--dark);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--border);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
    text-decoration: none;
}

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

.nav-links a:not(.btn) {
    color: var(--text-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.nav-links a:not(.btn):hover {
    color: var(--text);
}

.nav-user {
    color: var(--primary) !important;
    font-weight: 600;
}

/* Buttons */
.btn {
    padding: 0.6rem 1.2rem;
    border-radius: 8px;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    border: none;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

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

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

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

.btn-outline:hover {
    background: var(--card);
    color: var(--text);
}

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

.btn-lg {
    padding: 0.8rem 2rem;
    font-size: 1.1rem;
}

/* Main Content */
.main-content {
    flex: 1;
    padding: 2rem 0;
}

/* Hero Section */
.hero {
    text-align: center;
    padding: 4rem 0;
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    color: var(--text-muted);
    font-size: 1.2rem;
    max-width: 600px;
    margin: 0 auto 2rem;
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 1.5rem;
}

.project-card {
    background: var(--card);
    border-radius: 12px;
    overflow: hidden;
    transition: transform 0.2s, box-shadow 0.2s;
    border: 1px solid var(--border);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.project-preview {
    height: 220px;
    background: var(--darker);
    position: relative;
    overflow: hidden;
}

.project-preview iframe {
    width: 200%;
    height: 200%;
    transform: scale(0.5);
    transform-origin: top left;
    border: none;
    pointer-events: none;
}

.project-preview-overlay {
    position: absolute;
    inset: 0;
    background: transparent;
    cursor: pointer;
}

.project-info {
    padding: 1.25rem;
}

.project-info h3 {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

.project-info h3 a {
    color: var(--text);
    text-decoration: none;
}

.project-info h3 a:hover {
    color: var(--primary);
}

.project-description {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: 1rem;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.project-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.project-author {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.project-author img {
    width: 24px;
    height: 24px;
    border-radius: 50%;
}

.project-stats {
    display: flex;
    gap: 1rem;
}

.project-stats span {
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

/* Forms */
.form-page {
    max-width: 450px;
    margin: 2rem auto;
}

.form-container {
    background: var(--card);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border);
}

.form-container h2 {
    text-align: center;
    margin-bottom: 1.5rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.75rem;
    background: var(--dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text);
    font-size: 1rem;
}

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

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-error {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid var(--danger);
    color: var(--danger);
    padding: 0.75rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.form-success {
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid var(--success);
    color: var(--success);
    padding: 0.75rem;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.form-footer {
    text-align: center;
    margin-top: 1.5rem;
    color: var(--text-muted);
}

.form-footer a {
    color: var(--primary);
    text-decoration: none;
}

/* Tags */
.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.tag {
    background: rgba(99, 102, 241, 0.15);
    color: var(--primary);
    padding: 0.25rem 0.6rem;
    border-radius: 4px;
    font-size: 0.8rem;
    text-decoration: none;
    transition: all 0.2s;
}

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

/* Upload Tabs */
.upload-tabs {
    display: flex;
    gap: 0;
    margin-bottom: 1.5rem;
    border-radius: 8px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.upload-tab {
    flex: 1;
    padding: 0.75rem;
    text-align: center;
    background: var(--dark);
    color: var(--text-muted);
    cursor: pointer;
    border: none;
    transition: all 0.2s;
}

.upload-tab.active {
    background: var(--primary);
    color: white;
}

.upload-content {
    display: none;
}

.upload-content.active {
    display: block;
}

.file-drop-zone {
    border: 2px dashed var(--border);
    border-radius: 12px;
    padding: 3rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
}

.file-drop-zone:hover,
.file-drop-zone.dragover {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.05);
}

.file-drop-zone p {
    color: var(--text-muted);
    margin-top: 0.5rem;
}

/* View Page */
.view-container {
    max-width: 1200px;
    margin: 0 auto;
}

.view-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}

.view-header h1 {
    font-size: 1.8rem;
}

.view-header .project-meta {
    margin-top: 0.5rem;
}

.view-frame {
    background: white;
    border-radius: 12px;
    overflow: hidden;
    height: 70vh;
    border: 1px solid var(--border);
}

.view-frame iframe {
    width: 100%;
    height: 100%;
    border: none;
}

.view-actions {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
}

/* Dashboard */
.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.empty-state {
    text-align: center;
    padding: 4rem 2rem;
    color: var(--text-muted);
}

.empty-state h3 {
    color: var(--text);
    margin-bottom: 0.5rem;
}

/* Footer */
.footer {
    background: var(--dark);
    padding: 2rem 0;
    text-align: center;
    color: var(--text-muted);
    border-top: 1px solid var(--border);
}

/* Mobile Menu Toggle */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: var(--text);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
}

/* Responsive */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2rem;
    }

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

    .dashboard-header {
        flex-direction: column;
        gap: 1rem;
    }

    .menu-toggle {
        display: block;
    }

    .navbar .container {
        flex-wrap: wrap;
    }

    .search-form {
        order: 3;
        width: 100%;
        margin: 1rem 0 0 0 !important;
        display: none;
    }

    .search-form.active {
        display: flex;
    }

    .search-form input {
        flex: 1;
    }

    .nav-links {
        display: none;
        flex-direction: column;
        width: 100%;
        order: 4;
        padding-top: 1rem;
        gap: 0;
    }

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

    .nav-links a {
        padding: 0.75rem 0;
        border-top: 1px solid var(--border);
    }

    .nav-links .btn {
        margin-top: 0.5rem;
        text-align: center;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero h1 {
        font-size: 1.5rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .container {
        padding: 0 1rem;
    }
}