:root {
    --bg-dark: #0f0f1a;
    --bg-card: #1a1a2e;
    --bg-sidebar: #16213e;
    --bg-hover: #1e2a4a;
    --accent-purple: #7c3aed;
    --accent-purple-light: #a855f7;
    --accent-orange: #f97316;
    --accent-green: #22c55e;
    --accent-red: #ef4444;
    --accent-blue: #3b82f6;
    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border-color: #2d3748;
    --sidebar-width: 260px;
    --header-height: 64px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-dark);
    color: var(--text-primary);
    min-height: 100vh;
}

/* ========================
   LOGIN PAGE
======================== */
.login-wrapper {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(ellipse at top left, #2d1b69 0%, #0f0f1a 60%);
}

.login-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 48px;
    width: 100%;
    max-width: 420px;
    box-shadow: 0 25px 50px rgba(0,0,0,0.5);
}

.login-logo {
    text-align: center;
    margin-bottom: 32px;
}

.login-logo img { height: 60px; margin-bottom: 12px; }

.login-logo h1 {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-purple-light), var(--accent-orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.login-logo p { color: var(--text-secondary); font-size: 0.875rem; }

.form-group { margin-bottom: 20px; }
.form-group label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 6px;
}

.form-control {
    width: 100%;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    padding: 10px 14px;
    font-size: 0.9rem;
    transition: border-color 0.2s;
    outline: none;
}

.form-control:focus { border-color: var(--accent-purple); }

.btn-primary-admin {
    width: 100%;
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-purple-light));
    border: none;
    border-radius: 8px;
    color: white;
    padding: 12px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: opacity 0.2s, transform 0.1s;
}

.btn-primary-admin:hover { opacity: 0.9; }
.btn-primary-admin:active { transform: scale(0.98); }

.alert-error {
    background: rgba(239,68,68,0.15);
    border: 1px solid rgba(239,68,68,0.3);
    border-radius: 8px;
    color: #fca5a5;
    padding: 10px 14px;
    margin-bottom: 20px;
    font-size: 0.875rem;
}

.alert-success {
    background: rgba(34,197,94,0.15);
    border: 1px solid rgba(34,197,94,0.3);
    border-radius: 8px;
    color: #86efac;
    padding: 10px 14px;
    margin-bottom: 20px;
    font-size: 0.875rem;
}

/* ========================
   ADMIN LAYOUT
======================== */
.admin-layout {
    display: flex;
    min-height: 100vh;
}

/* SIDEBAR */
.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-sidebar);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 100;
    transition: transform 0.3s;
}

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

.sidebar-logo h2 {
    font-size: 1.1rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-purple-light), var(--accent-orange));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.sidebar-logo p {
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-top: 2px;
}

.sidebar-nav {
    flex: 1;
    padding: 16px 12px;
    overflow-y: auto;
}

.nav-section-title {
    color: var(--text-muted);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    padding: 8px 8px 4px;
    margin-top: 8px;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: background 0.15s, color 0.15s;
    margin-bottom: 2px;
}

.nav-link:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.nav-link.active {
    background: rgba(124, 58, 237, 0.25);
    color: var(--accent-purple-light);
}

.nav-link svg { width: 18px; height: 18px; flex-shrink: 0; }

.nav-badge {
    margin-left: auto;
    background: var(--accent-red);
    color: white;
    font-size: 0.7rem;
    font-weight: 700;
    border-radius: 10px;
    padding: 1px 6px;
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid var(--border-color);
}

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

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--accent-purple), var(--accent-orange));
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 0.875rem;
    flex-shrink: 0;
}

.user-info { flex: 1; min-width: 0; }
.user-name {
    font-size: 0.875rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}
.user-role {
    font-size: 0.7rem;
    color: var(--text-muted);
    text-transform: capitalize;
}

.logout-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    transition: color 0.2s;
}
.logout-btn:hover { color: var(--accent-red); }

/* MAIN CONTENT */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.admin-header {
    height: var(--header-height);
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    padding: 0 28px;
    position: sticky;
    top: 0;
    z-index: 50;
}

.admin-header h1 {
    font-size: 1.25rem;
    font-weight: 700;
}

.admin-header-actions {
    margin-left: auto;
    display: flex;
    gap: 12px;
    align-items: center;
}

.page-content {
    padding: 28px;
    flex: 1;
}

/* STATS CARDS */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 32px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 20px;
    display: flex;
    align-items: center;
    gap: 16px;
    transition: border-color 0.2s;
}

.stat-card:hover { border-color: var(--accent-purple); }

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon.purple { background: rgba(124,58,237,0.2); color: var(--accent-purple-light); }
.stat-icon.orange { background: rgba(249,115,22,0.2); color: var(--accent-orange); }
.stat-icon.green  { background: rgba(34,197,94,0.2); color: var(--accent-green); }
.stat-icon.blue   { background: rgba(59,130,246,0.2); color: var(--accent-blue); }
.stat-icon.red    { background: rgba(239,68,68,0.2); color: var(--accent-red); }

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    line-height: 1;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-top: 4px;
}

/* DATA TABLE */
.data-table-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.table-header {
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    gap: 12px;
}

.table-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.table-header-actions {
    margin-left: auto;
    display: flex;
    gap: 8px;
}

table {
    width: 100%;
    border-collapse: collapse;
}

thead th {
    background: var(--bg-dark);
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 10px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

tbody tr {
    border-bottom: 1px solid var(--border-color);
    transition: background 0.15s;
}

tbody tr:last-child { border-bottom: none; }
tbody tr:hover { background: var(--bg-hover); }

tbody td {
    padding: 12px 16px;
    font-size: 0.875rem;
    color: var(--text-secondary);
}

tbody td:first-child { color: var(--text-primary); }

/* BADGES */
.badge {
    display: inline-block;
    padding: 3px 10px;
    border-radius: 20px;
    font-size: 0.72rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.badge-pending  { background: rgba(249,115,22,0.2); color: var(--accent-orange); }
.badge-approved { background: rgba(34,197,94,0.2); color: var(--accent-green); }
.badge-rejected { background: rgba(239,68,68,0.2); color: var(--accent-red); }
.badge-unread   { background: rgba(59,130,246,0.2); color: var(--accent-blue); }
.badge-read     { background: rgba(148,163,184,0.2); color: var(--text-secondary); }
.badge-done     { background: rgba(34,197,94,0.2); color: var(--accent-green); }
.badge-superadmin { background: rgba(124,58,237,0.2); color: var(--accent-purple-light); }
.badge-admin    { background: rgba(59,130,246,0.2); color: var(--accent-blue); }
.badge-inactive { background: rgba(100,116,139,0.2); color: var(--text-muted); }

/* BUTTONS */
.btn-sm {
    padding: 5px 12px;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    text-decoration: none;
    display: inline-block;
    transition: opacity 0.2s;
}

.btn-sm:hover { opacity: 0.8; }
.btn-purple  { background: var(--accent-purple); color: white; }
.btn-green   { background: var(--accent-green); color: white; }
.btn-red     { background: rgba(239,68,68,0.2); color: var(--accent-red); border: 1px solid rgba(239,68,68,0.3); }
.btn-ghost   { background: var(--bg-hover); color: var(--text-secondary); }
.btn-orange  { background: var(--accent-orange); color: white; }
.btn-blue    { background: var(--accent-blue); color: white; }

/* FORMS */
.form-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    margin-bottom: 24px;
}

.form-card h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 20px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border-color);
}

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 16px; }
.form-col-full { grid-column: 1 / -1; }

.form-group { margin-bottom: 0; }
.form-group label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 500;
    margin-bottom: 6px;
}

.form-group .form-control {
    width: 100%;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    padding: 9px 12px;
    font-size: 0.875rem;
    outline: none;
    transition: border-color 0.2s;
}

.form-group .form-control:focus { border-color: var(--accent-purple); }

textarea.form-control { min-height: 90px; resize: vertical; }

select.form-control option { background: var(--bg-dark); }

.form-actions { margin-top: 20px; display: flex; gap: 12px; }

/* CALENDAR */
.calendar-wrapper {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    overflow: hidden;
}

.calendar-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 20px;
    border-bottom: 1px solid var(--border-color);
}

.calendar-nav h3 { font-size: 1.1rem; font-weight: 700; }

.calendar-nav-btns { display: flex; gap: 8px; }

.calendar-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
}

.calendar-day-header {
    padding: 10px;
    text-align: center;
    font-size: 0.72rem;
    font-weight: 600;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--bg-dark);
    border-bottom: 1px solid var(--border-color);
    border-right: 1px solid var(--border-color);
}

.calendar-cell {
    min-height: 100px;
    padding: 8px;
    border-right: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
    vertical-align: top;
    transition: background 0.15s;
}

.calendar-cell:hover { background: var(--bg-hover); }
.calendar-cell.other-month { opacity: 0.4; }
.calendar-cell.today { background: rgba(124,58,237,0.1); }

.day-number {
    font-size: 0.875rem;
    font-weight: 600;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    margin-bottom: 4px;
}

.calendar-cell.today .day-number {
    background: var(--accent-purple);
    color: white;
}

.event-pill {
    font-size: 0.7rem;
    padding: 2px 6px;
    border-radius: 4px;
    margin-bottom: 2px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    cursor: pointer;
    color: white;
    font-weight: 500;
}

/* MODAL */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s;
}

.modal-overlay.active { opacity: 1; pointer-events: all; }

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    padding: 28px;
    width: 100%;
    max-width: 540px;
    transform: scale(0.95);
    transition: transform 0.2s;
}

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

.modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.modal-title { font-size: 1.1rem; font-weight: 700; }

.modal-close {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 1.2rem;
    padding: 4px;
    border-radius: 4px;
    transition: color 0.2s;
}

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

/* MOBILE */
.hamburger {
    display: none;
    background: none;
    border: none;
    color: var(--text-primary);
    cursor: pointer;
    padding: 8px;
    margin-right: 12px;
}

@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }

    .sidebar.open { transform: translateX(0); }

    .main-content { margin-left: 0; }

    .hamburger { display: flex; }

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

    .form-row, .form-row-3 { grid-template-columns: 1fr; }

    .page-content { padding: 16px; }
}