:root {
    /* Color Palette - Premium Dark Theme */
    --bg-main: #0a0a0b;
    --bg-card: rgba(23, 23, 28, 0.7);
    --bg-card-hover: rgba(30, 30, 36, 0.9);
    --accent-primary: #8b5cf6;
    --accent-primary-hover: #7c3aed;
    --accent-secondary: #06b6d4;
    --text-primary: #ffffff;
    --text-secondary: #a1a1aa;
    --text-muted: #71717a;
    --border-color: rgba(255, 255, 255, 0.08);
    --danger: #ef4444;
    --success: #10b981;

    /* Typography */
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;

    /* Effects */
    --card-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    --card-hover-shadow: 0 20px 40px rgba(0, 0, 0, 0.7), 0 0 20px rgba(139, 92, 246, 0.2);
    --transition: 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 20px;
    --radius-full: 9999px;
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    -webkit-font-smoothing: antialiased;
}

/* Background gradient effect */
body::before {
    content: '';
    position: fixed;
    top: -50%;
    left: -20%;
    width: 140%;
    height: 200%;
    background: radial-gradient(circle at center, rgba(139, 92, 246, 0.03) 0%, rgba(6, 182, 212, 0.03) 40%, transparent 70%);
    pointer-events: none;
    z-index: -1;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.02em;
}

/* Global Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border-radius: var(--radius-full);
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.95rem;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    outline: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    color: white;
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(139, 92, 246, 0.5);
    filter: brightness(1.1);
}

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

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.05);
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 11, 0.8);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 0;
}

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

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.5rem;
    font-weight: 800;
    font-family: var(--font-heading);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo i {
    color: var(--accent-primary);
    -webkit-text-fill-color: var(--accent-primary);
}

/* Hero Section */
.hero {
    padding: 6rem 2rem 4rem;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero h1 {
    font-size: 4rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
}

.hero p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

.highlight {
    position: relative;
    display: inline-block;
    color: transparent;
    background: linear-gradient(120deg, #a78bfa, #22d3ee);
    -webkit-background-clip: text;
    background-clip: text;
}

.highlight::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent-primary), var(--accent-secondary), transparent);
}

/* Main Content */
.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem 5rem;
}

/* Filters */
.filters {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.search-bar {
    position: relative;
    flex: 1;
    min-width: 300px;
}

.search-bar i {
    position: absolute;
    left: 1.2rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.search-bar input {
    width: 100%;
    padding: 12px 20px 12px 2.8rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-full);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: var(--transition);
}

.search-bar input:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.15);
}

.tag-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 8px 16px;
    border-radius: var(--radius-full);
    font-size: 0.85rem;
    cursor: pointer;
    transition: var(--transition);
}

.tag-btn:hover {
    border-color: rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
}

.tag-btn.active {
    background: rgba(139, 92, 246, 0.15);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 2rem;
}

/* Project Card */
.project-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: var(--transition);
    height: 100%;
    box-shadow: var(--card-shadow);
    backdrop-filter: blur(10px);
    position: relative;
    animation: fadeIn 0.6s ease forwards;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.project-card:hover {
    transform: translateY(-8px);
    border-color: rgba(255, 255, 255, 0.15);
    box-shadow: var(--card-hover-shadow);
}

/* Card Actions (Edit/Delete) */
.card-actions {
    position: absolute;
    top: 12px;
    right: 12px;
    display: flex;
    gap: 8px;
    opacity: 0;
    transition: var(--transition);
    z-index: 10;
}

.project-card:hover .card-actions.admin-only-actions,
.card-actions.admin-only-actions:focus-within {
    opacity: 1;
}

/* Base state for admin actions is display none, turned on via JS class */
.admin-mode .admin-only-actions {
    display: flex !important;
}

.action-btn {
    background: rgba(10, 10, 11, 0.7);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: var(--transition);
}

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

.action-btn.delete:hover {
    background: var(--danger);
    border-color: var(--danger);
}

.project-image {
    width: 100%;
    height: 180px;
    object-fit: cover;
    border-bottom: 1px solid var(--border-color);
    background: linear-gradient(45deg, #1e293b, #0f172a);
}

.project-content {
    padding: 1.5rem;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.project-title {
    font-size: 1.25rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.project-desc {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    line-height: 1.5;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
}

.tag {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-secondary);
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 0.75rem;
    font-weight: 500;
}

.tag.html {
    color: #e34f26;
    background: rgba(227, 79, 38, 0.1);
}

.tag.css {
    color: #264de4;
    background: rgba(38, 77, 228, 0.1);
}

.tag.javascript {
    color: #f7df1e;
    background: rgba(247, 223, 30, 0.1);
}

.tag.python {
    color: #3776ab;
    background: rgba(55, 118, 171, 0.1);
}

.tag.react {
    color: #61dafb;
    background: rgba(97, 218, 251, 0.1);
}

.project-footer {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    padding-top: 1rem;
    border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.card-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: var(--transition);
}

.card-link:hover {
    color: var(--text-primary);
}

.card-link.demo:hover {
    color: var(--accent-secondary);
}

/* Empty State */
.no-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: 4rem 0;
    color: var(--text-muted);
}

.no-results i {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

/* Modal styles */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
}

.modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.modal {
    background: #18181b;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 500px;
    padding: 2rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    transform: translateY(20px) scale(0.95);
    transition: var(--transition);
}

.modal-overlay.active .modal {
    transform: translateY(0) scale(1);
}

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

.modal-header h2 {
    font-size: 1.5rem;
}

.close-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 1.25rem;
    cursor: pointer;
    transition: var(--transition);
}

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

.modal-form .form-group {
    margin-bottom: 1rem;
}

.modal-form label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 0.4rem;
}

.modal-form input,
.modal-form textarea {
    width: 100%;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    transition: var(--transition);
}

.modal-form input:focus,
.modal-form textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: rgba(255, 255, 255, 0.05);
}

.modal-form .form-row {
    display: flex;
    gap: 1rem;
}

.modal-form .half {
    flex: 1;
}

.form-actions {
    display: flex;
    justify-content: flex-end;
    gap: 1rem;
    margin-top: 2rem;
}

/* Responsive constraints */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .filters {
        flex-direction: column;
        align-items: flex-start;
    }

    .search-bar {
        width: 100%;
    }

    .modal {
        margin: 1rem;
        width: calc(100% - 2rem);
    }

    .modal-form .form-row {
        flex-direction: column;
    }
}