:root {
    --primary-color: #4f46e5;
    --primary-hover: #4338ca;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-main: #1e293b;
    --text-muted: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
}

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

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 3rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
}

.logo h1 {
    font-size: 1.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.admin-link {
    text-decoration: none;
    color: var(--text-muted);
    font-size: 0.875rem;
    font-weight: 500;
    transition: color 0.2s;
}

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

/* Grids */
.link-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
    align-items: start;
}

.link-card {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    transition: transform 0.2s, box-shadow 0.2s;
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

.link-card.disabled {
    opacity: 0.6;
    pointer-events: none;
    filter: grayscale(1);
}

.link-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.link-card .category {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
}

.link-card h3 {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
}

.link-card p {
    font-size: 0.875rem;
    color: var(--text-muted);
    flex-grow: 1;
}

.card-icon {
    font-size: 1rem;
    color: var(--primary-color);
    margin-right: 0.4rem;
}

/* Forms and UI Elements */
.input-group {
    margin-bottom: 1rem;
}

.input-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.25rem;
}

input[type="text"],
input[type="password"],
input[type="url"],
select,
textarea {
    width: 100%;
    padding: 0.625rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    outline: none;
    transition: border-color 0.2s;
}

input:focus,
select:focus,
textarea:focus {
    border-color: var(--primary-color);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.625rem 1.25rem;
    border-radius: 6px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    border: none;
    font-size: 0.875rem;
}

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

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

.btn-danger {
    background-color: #ef4444;
    color: white;
}

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

/* Modal */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: flex-start;
    justify-content: center;
    z-index: 1000;
    overflow-y: auto;
    padding: 2rem 1rem;
}

.modal-content {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    width: 100%;
    max-width: 500px;
    box-shadow: var(--shadow-lg);
    margin: auto;
}


/* Responsive */
header nav {
    display: flex;
    gap: 1rem;
    align-items: center;
}

/* Pagination */
.pagination-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 3rem;
    margin-bottom: 2rem;
}

.pagination-btn {
    min-width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border-color);
    background: white;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    font-size: 0.875rem;
    transition: all 0.2s;
    color: var(--text-main);
}

.pagination-btn:hover:not(:disabled) {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

.pagination-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    header {
        flex-direction: column !important;
        gap: 1rem !important;
        text-align: center;
        padding-bottom: 2rem;
    }

    header nav {
        flex-direction: row !important;
        flex-wrap: wrap;
        justify-content: center;
        width: 100% !important;
        gap: 0.5rem !important;
    }

    header nav .btn,
    header nav a.btn {
        width: auto !important;
        display: inline-flex !important;
        padding: 0.5rem 0.75rem;
    }

    .admin-link {
        display: inline-block;
        padding: 0.5rem;
    }
}