:root {
    --bg: #f5f7fb;
    --bg-card: #ffffff;
    --text: #1f2933;
    --accent: #6366f1;
    --accent-soft: rgba(99,102,241,0.1);
    --border: #e5e7eb;
    --shadow: 0 10px 30px rgba(15,23,42,0.10);
}

html[data-theme="dark"] {
    --bg: #0f172a;
    --bg-card: #111827;
    --text: #e5e7eb;
    --accent: #818cf8;
    --accent-soft: rgba(129,140,248,0.15);
    --border: #1f2937;
    --shadow: 0 10px 35px rgba(0,0,0,0.6);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

body {
    background: radial-gradient(circle at top, rgba(99,102,241,0.25), transparent 55%), var(--bg);
    color: var(--text);
    min-height: 100vh;
}

.main-container {
    padding: 90px 20px 40px;
    max-width: 1100px;
    margin: 0 auto;
}

/* Topbar */

.topbar {
    position: fixed;
    inset: 0 0 auto 0;
    height: 64px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    backdrop-filter: blur(16px);
    background: linear-gradient(90deg, rgba(15,23,42,0.90), rgba(15,23,42,0.85));
    color: #e5e7eb;
    box-shadow: 0 10px 30px rgba(15,23,42,0.6);
    z-index: 999;
}

.logo {
    font-weight: 700;
    letter-spacing: 0.05em;
    font-size: 18px;
}

.nav {
    display: flex;
    align-items: center;
    gap: 12px;
}

.nav a {
    color: #e5e7eb;
    text-decoration: none;
    font-size: 14px;
    padding: 6px 10px;
    border-radius: 999px;
    transition: background 0.2s, transform 0.1s;
}

.nav a:hover {
    background: rgba(148,163,184,0.25);
    transform: translateY(-1px);
}

.btn-primary {
    background: linear-gradient(135deg, #4f46e5, #6366f1);
    color: #fff !important;
    box-shadow: 0 6px 18px rgba(79,70,229,0.45);
}

.btn-outline {
    border: 1px solid rgba(148,163,184,0.6);
}

.theme-btn {
    border-radius: 999px;
    padding: 6px 8px;
    border: 1px solid rgba(148,163,184,0.5);
    background: rgba(15,23,42,0.7);
    color: #e5e7eb;
    cursor: pointer;
}

/* Card & form */

.card {
    background: var(--bg-card);
    border-radius: 24px;
    padding: 24px 24px 20px;
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    animation: floatIn 0.4s ease-out;
}

@keyframes floatIn {
    from { opacity: 0; transform: translateY(12px) scale(0.98); }
    to { opacity: 1; transform: translateY(0) scale(1); }
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.card-title {
    font-size: 20px;
    font-weight: 600;
}

.card-subtitle {
    font-size: 13px;
    opacity: 0.8;
}

/* Form */

form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

label {
    font-size: 13px;
    opacity: 0.85;
}

input, select, textarea {
    padding: 10px 12px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: rgba(15,23,42,0.02);
    color: var(--text);
    outline: none;
    font-size: 14px;
}

input:focus, select:focus, textarea:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 1px var(--accent-soft);
}

/* Button */

button, .btn {
    border-radius: 999px;
    border: none;
    padding: 10px 18px;
    font-size: 14px;
    cursor: pointer;
    background: linear-gradient(135deg, #4f46e5, #6366f1);
    color: #fff;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    transition: transform 0.1s, box-shadow 0.1s;
    box-shadow: 0 8px 20px rgba(79,70,229,0.5);
}

button:hover, .btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 28px rgba(79,70,229,0.6);
}

/* Table */

.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 10px;
    font-size: 14px;
}

.table th, .table td {
    padding: 10px 8px;
    border-bottom: 1px solid var(--border);
}

.table th {
    text-align: left;
    font-size: 12px;
    text-transform: uppercase;
    opacity: 0.6;
}

/* Layout */

.columns {
    display: grid;
    grid-template-columns: minmax(0,2.2fr) minmax(0,1.2fr);
    gap: 20px;
}

.badge {
    font-size: 11px;
    padding: 3px 8px;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent);
}

/* Footer */

.footer {
    margin-top: 40px;
    text-align: center;
    font-size: 13px;
    opacity: 0.7;
}

.pagination {
    margin-top: 12px;
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}

.pagination a {
    padding: 6px 10px;
    border-radius: 999px;
    border: 1px solid var(--border);
    font-size: 13px;
    text-decoration: none;
    color: var(--text);
    opacity: 0.8;
}

.pagination a.active {
    background: var(--accent);
    color: #fff;
    opacity: 1;
    border-color: var(--accent);
}

.pagination a:hover {
    opacity: 1;
}