/* ============================================
   Dashboard · SuPaginaWeb
   Estilo AdminLTE simplificado
   ============================================ */

/* --- Reset --- */
*, *::before, *::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --sidebar-w: 240px;
    --bg-dark: #1e1e2e;
    --bg-sidebar: #181825;
    --bg-card: #252540;
    --text: #cdd6f4;
    --text-dim: #6c7086;
    --accent: #89b4fa;
    --accent-hover: #74c7ec;
    --danger: #f38ba8;
    --success: #a6e3a1;
    --border: #313244;
    --radius: 10px;
    --transition: 0.2s ease;
}

html, body {
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-dark);
    color: var(--text);
}

/* --- Login --- */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
}

.login-card {
    background: var(--bg-sidebar);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 40px;
    width: 360px;
    max-width: 90%;
    box-shadow: 0 20px 60px rgba(0,0,0,0.4);
}

.login-header {
    text-align: center;
    margin-bottom: 28px;
}

.login-header h1 {
    font-size: 24px;
    font-weight: 700;
    color: #fff;
}

.login-header p {
    color: var(--text-dim);
    font-size: 13px;
    margin-top: 4px;
}

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

.login-form label {
    font-size: 14px;
    color: var(--text-dim);
}

.login-form input[type="password"] {
    background: var(--bg-dark);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 16px;
    color: #fff;
    font-size: 18px;
    letter-spacing: 8px;
    text-align: center;
    transition: border var(--transition);
}

.login-form input[type="password"]:focus {
    outline: none;
    border-color: var(--accent);
}

.login-form button {
    background: var(--accent);
    color: #111;
    border: none;
    border-radius: 8px;
    padding: 12px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: background var(--transition);
    margin-top: 4px;
}

.login-form button:hover {
    background: var(--accent-hover);
}

.login-error {
    background: rgba(243, 139, 168, 0.15);
    color: var(--danger);
    padding: 8px 12px;
    border-radius: 6px;
    font-size: 13px;
    text-align: center;
}

/* --- Sidebar --- */
.sidebar {
    position: fixed;
    left: 0;
    top: 0;
    width: var(--sidebar-w);
    height: 100vh;
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.sidebar-header {
    padding: 24px 20px 16px;
    border-bottom: 1px solid var(--border);
}

.sidebar-header h2 {
    font-size: 18px;
    font-weight: 700;
    color: #fff;
}

.sidebar-sub {
    font-size: 11px;
    color: var(--text-dim);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.sidebar-nav {
    flex: 1;
    padding: 12px 0;
    overflow-y: auto;
}

.sidebar-nav ul {
    list-style: none;
}

.sidebar-nav li {
    margin: 2px 0;
}

.sidebar-nav li.active {
    background: rgba(137, 180, 250, 0.1);
    border-right: 3px solid var(--accent);
}

.nav-link, .sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 20px;
    color: var(--text);
    text-decoration: none;
    font-size: 14px;
    transition: background var(--transition);
}

.nav-link:hover, .sidebar-nav a:hover {
    background: rgba(255,255,255,0.03);
}

.nav-link i, .sidebar-nav a i {
    width: 20px;
    text-align: center;
    color: var(--text-dim);
}

.sidebar-nav li.active a {
    color: var(--accent);
}

.sidebar-nav li.active a i {
    color: var(--accent);
}

/* --- Submenú --- */
.sidebar-nav li ul.submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
    background: rgba(0,0,0,0.15);
}

.sidebar-nav li.open ul.submenu {
    max-height: 300px;
}

.sidebar-nav li ul.submenu li a {
    padding-left: 52px;
    font-size: 13px;
}

.sidebar-nav li ul.submenu li.active {
    background: rgba(137, 180, 250, 0.08);
    border-right: 3px solid var(--accent);
}

.sidebar-nav li.open > a i.fa-chevron-down {
    transform: rotate(180deg);
}

.sidebar-footer {
    padding: 12px 0;
    border-top: 1px solid var(--border);
}

/* --- Main Content --- */
.main-content {
    margin-left: var(--sidebar-w);
    padding: 32px;
    min-height: 100vh;
}

/* --- Cards --- */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
}

.card h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    color: #fff;
}

.card p {
    font-size: 14px;
    color: var(--text-dim);
    line-height: 1.6;
}

/* --- Botones --- */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
}

.btn-primary {
    background: var(--accent);
    color: #111;
}

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
}

/* --- Page header --- */
.page-header {
    margin-bottom: 24px;
}

.page-header h1 {
    font-size: 22px;
    font-weight: 700;
    color: #fff;
}

.page-header p {
    color: var(--text-dim);
    font-size: 14px;
    margin-top: 4px;
}

/* --- Grid --- */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 16px;
}