:root {
    --primary: #1a1a1a;
    --sidebar-bg: #111;
    --accent: #c8a97e;
    --accent-hover: #b8956a;
    --bg: #f5f0eb;
    --card-bg: #ffffff;
    --text: #1a1a1a;
    --text-light: #666;
    --border: #e0dcd7;
    --success: #4caf50;
    --danger: #e74c3c;
    --warning: #f39c12;
    --font-heading: 'Bebas Neue', sans-serif;
    --font-body: 'Montserrat', sans-serif;
}

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

body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
}

/* LOGIN */
.login-screen {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--primary);
}

.login-box {
    background: var(--card-bg);
    padding: 3rem;
    border-radius: 12px;
    width: 100%;
    max-width: 380px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.3);
}

.login-box h1 {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    text-align: center;
    letter-spacing: 3px;
    margin-bottom: 2rem;
}

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

.form-group label {
    display: block;
    font-weight: 500;
    font-size: 0.85rem;
    margin-bottom: 0.3rem;
}

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: 0.7rem 1rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 0.9rem;
    transition: border-color 0.3s;
}

.form-group input:focus,
.form-group textarea:focus,
.form-group select:focus {
    outline: none;
    border-color: var(--accent);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

.pass-wrapper {
    position: relative;
}

.toggle-pass {
    position: absolute;
    right: 10px;
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-light);
}

.btn-login {
    width: 100%;
    padding: 0.8rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 8px;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    margin-top: 0.5rem;
    transition: background 0.3s;
}

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

.login-error {
    color: var(--danger);
    text-align: center;
    margin-top: 1rem;
    font-size: 0.85rem;
}

/* ADMIN PANEL */
.admin-panel {
    display: flex;
    min-height: 100vh;
}

/* SIDEBAR */
.sidebar {
    width: 260px;
    background: var(--sidebar-bg);
    color: white;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: transform 0.3s;
}

.sidebar-header {
    padding: 1.5rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    border-bottom: 1px solid rgba(255,255,255,0.1);
}

.sidebar-header h2 {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    letter-spacing: 2px;
}

.sidebar-close {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.3rem;
    cursor: pointer;
}

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

.sidebar-link {
    display: flex;
    align-items: center;
    gap: 0.8rem;
    width: 100%;
    padding: 0.9rem 1.5rem;
    background: none;
    border: none;
    color: rgba(255,255,255,0.7);
    font-family: var(--font-body);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s;
    text-align: left;
}

.sidebar-link:hover {
    background: rgba(255,255,255,0.05);
    color: white;
}

.sidebar-link.active {
    background: rgba(200, 169, 126, 0.15);
    color: var(--accent);
    border-right: 3px solid var(--accent);
}

.sidebar-link i { width: 20px; text-align: center; }

.sidebar-footer {
    padding: 1rem 1.5rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.sidebar-home,
.sidebar-logout {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: rgba(255,255,255,0.5);
    text-decoration: none;
    font-size: 0.85rem;
    background: none;
    border: none;
    cursor: pointer;
    font-family: var(--font-body);
    transition: color 0.3s;
}

.sidebar-home:hover,
.sidebar-logout:hover { color: var(--accent); }

/* MAIN CONTENT */
.main-content {
    flex: 1;
    margin-left: 260px;
    min-height: 100vh;
}

.main-header {
    background: var(--card-bg);
    padding: 1rem 2rem;
    display: flex;
    align-items: center;
    gap: 1rem;
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 50;
}

.main-header h1 {
    font-family: var(--font-heading);
    font-size: 1.6rem;
    letter-spacing: 2px;
    flex: 1;
}

.sidebar-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    color: var(--text);
}

.btn-save {
    padding: 0.5rem 1.2rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 6px;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.btn-save:hover { background: var(--accent-hover); }

.section-content {
    padding: 2rem;
    max-width: 900px;
}

/* CARDS */
.admin-card {
    background: var(--card-bg);
    border-radius: 10px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
    border: 1px solid var(--border);
}

.admin-card h3 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    letter-spacing: 1px;
    margin-bottom: 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 1px solid var(--border);
}

/* TABLE */
.admin-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

.admin-table th {
    text-align: left;
    font-weight: 600;
    padding: 0.6rem 0.8rem;
    border-bottom: 2px solid var(--border);
    font-size: 0.8rem;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    color: var(--text-light);
}

.admin-table td {
    padding: 0.6rem 0.8rem;
    border-bottom: 1px solid var(--border);
    vertical-align: middle;
}

.admin-table tr:last-child td { border-bottom: none; }

/* BUTTONS */
.btn-add {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 6px;
    font-family: var(--font-body);
    font-size: 0.85rem;
    cursor: pointer;
    transition: background 0.3s;
    margin-bottom: 1rem;
}

.btn-add:hover { background: var(--accent-hover); }

.btn-edit,
.btn-delete,
.btn-toggle {
    padding: 0.3rem 0.6rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.8rem;
    transition: all 0.2s;
}

.btn-edit {
    background: #e3f2fd;
    color: #1976d2;
}

.btn-edit:hover { background: #bbdefb; }

.btn-delete {
    background: #fce4ec;
    color: var(--danger);
}

.btn-delete:hover { background: #f8bbd0; }

.btn-toggle {
    background: #e8f5e9;
    color: var(--success);
}

.btn-toggle.inactive {
    background: #fce4ec;
    color: var(--danger);
}

.btn-toggle:hover { opacity: 0.8; }

.btn-small {
    padding: 0.3rem 0.8rem;
    font-size: 0.8rem;
    border-radius: 4px;
    cursor: pointer;
    border: 1px solid var(--border);
    background: white;
    font-family: var(--font-body);
    transition: all 0.2s;
}

.btn-small:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* FORM ROW */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* INLINE FORM */
.inline-form {
    background: var(--bg);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 1rem;
    border: 1px solid var(--border);
}

.inline-form h4 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    letter-spacing: 1px;
    margin-bottom: 1rem;
}

.inline-form .form-actions {
    display: flex;
    gap: 0.5rem;
    margin-top: 1rem;
}

.btn-primary {
    padding: 0.5rem 1.2rem;
    background: var(--accent);
    color: white;
    border: none;
    border-radius: 6px;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

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

.btn-secondary {
    padding: 0.5rem 1.2rem;
    background: none;
    color: var(--text-light);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-family: var(--font-body);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-secondary:hover { border-color: var(--text); color: var(--text); }

/* CALENDAR ADMIN */
.admin-calendar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.admin-calendar-header h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    letter-spacing: 1px;
    border: none;
    padding: 0;
    margin: 0;
}

.admin-cal-nav {
    background: none;
    border: 1px solid var(--border);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s;
}

.admin-cal-nav:hover {
    background: var(--accent);
    border-color: var(--accent);
    color: white;
}

.admin-cal-grid {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 4px;
    margin-bottom: 1.5rem;
}

.admin-cal-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    text-align: center;
    margin-bottom: 0.5rem;
}

.admin-cal-weekdays span {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-light);
    padding: 0.3rem;
}

.admin-cal-day {
    aspect-ratio: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 6px;
    font-size: 0.8rem;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid transparent;
    background: white;
}

.admin-cal-day:hover {
    border-color: var(--accent);
}

.admin-cal-day.selected {
    background: var(--accent);
    color: white;
}

.admin-cal-day.has-data {
    font-weight: 700;
    border-color: var(--accent);
}

.admin-cal-day.today {
    border: 2px solid var(--accent);
}

/* SLOT MANAGEMENT */
.slot-management {
    margin-top: 1rem;
}

.slot-date-title {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    letter-spacing: 1px;
    margin-bottom: 1rem;
    color: var(--accent);
}

.slot-barber-section {
    margin-bottom: 1.5rem;
}

.slot-barber-title {
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.slot-period {
    margin-bottom: 1rem;
}

.slot-period-label {
    font-size: 0.8rem;
    color: var(--text-light);
    margin-bottom: 0.4rem;
    font-weight: 500;
}

.slot-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

.slot-chip {
    padding: 0.35rem 0.7rem;
    border-radius: 6px;
    font-size: 0.78rem;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid var(--border);
    background: white;
    font-family: var(--font-body);
}

.slot-chip.available {
    background: #e8f5e9;
    border-color: var(--success);
    color: var(--success);
}

.slot-chip.booked {
    background: #e3f2fd;
    border-color: #1976d2;
    color: #1976d2;
    cursor: default;
}

.slot-chip.unavailable {
    background: #fce4ec;
    border-color: var(--danger);
    color: var(--danger);
    opacity: 0.6;
}

.slot-chip.available:hover {
    background: var(--success);
    color: white;
}

.slot-chip.booked-info {
    font-weight: 600;
}

/* BOOKING INFO */
.booking-info {
    background: #e3f2fd;
    border-radius: 8px;
    padding: 0.8rem;
    margin-top: 0.5rem;
    font-size: 0.8rem;
}

.booking-info p { margin: 0.2rem 0; }

/* TOAST */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: var(--success);
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    z-index: 1000;
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
}

.toast.show {
    transform: translateY(0);
    opacity: 1;
}

.toast.error { background: var(--danger); }

/* MODAL */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.5);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal {
    background: white;
    border-radius: 12px;
    padding: 2rem;
    max-width: 400px;
    width: 90%;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.modal h3 {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.modal p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
}

.modal-actions {
    display: flex;
    gap: 0.5rem;
    justify-content: flex-end;
}

.btn-danger {
    padding: 0.5rem 1.2rem;
    background: var(--danger);
    color: white;
    border: none;
    border-radius: 6px;
    font-family: var(--font-body);
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
}

.btn-danger:hover { background: #c0392b; }

.btn-cancel {
    padding: 0.5rem 1.2rem;
    background: none;
    color: var(--text-light);
    border: 1px solid var(--border);
    border-radius: 6px;
    font-family: var(--font-body);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.3s;
}

.btn-cancel:hover { border-color: var(--text); color: var(--text); }

/* BATCH ACTIONS */
.batch-actions {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

/* RESPONSIVE */
@media (max-width: 992px) {
    .sidebar {
        transform: translateX(-100%);
    }

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

    .sidebar-close {
        display: block;
    }

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

    .sidebar-toggle {
        display: block;
    }

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

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

    .main-header {
        padding: 0.8rem 1rem;
    }

    .admin-table {
        font-size: 0.78rem;
    }

    .admin-table th,
    .admin-table td {
        padding: 0.4rem;
    }
}