/* ============================================================
   Sagara Yasa - Professional Minimalist Stylesheet
   Color Palette:
   --primary: #1a3a4a (Deep Navy)
   --secondary: #0d7377 (Teal)
   --accent: #c9a96e (Gold)
   --bg: #f5f6f8
   --white: #ffffff
   --text: #2c3e50
   --text-light: #6b7280
   --danger: #e74c3c
   --success: #27ae60
   --warning: #f39c12
   --border: #e2e8f0
   ============================================================ */

:root {
    --primary: #1a3a4a;
    --primary-light: #2c5282;
    --secondary: #0d7377;
    --secondary-light: #14a3a8;
    --accent: #c9a96e;
    --accent-light: #d4bc8b;
    --bg: #f5f6f8;
    --white: #ffffff;
    --text: #2c3e50;
    --text-light: #6b7280;
    --danger: #e74c3c;
    --danger-light: #fef2f2;
    --success: #27ae60;
    --success-light: #f0fdf4;
    --warning: #f39c12;
    --warning-light: #fffbeb;
    --info: #3b82f6;
    --info-light: #eff6ff;
    --border: #e2e8f0;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07), 0 2px 4px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1), 0 4px 6px rgba(0, 0, 0, 0.05);
    --radius-sm: 6px;
    --radius: 10px;
    --radius-lg: 14px;
    --transition: all 0.2s ease;
    --sidebar-width: 260px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg);
    color: var(--text);
    display: flex;
    min-height: 100vh;
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
}

/* ============================================================
   SIDEBAR
   ============================================================ */
.sidebar {
    width: var(--sidebar-width);
    background: var(--primary);
    color: #ffffff;
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    z-index: 100;
    transition: transform 0.3s ease;
    box-shadow: 2px 0 15px rgba(0, 0, 0, 0.1);
}

.sidebar-header {
    padding: 24px 20px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.logo-icon {
    flex-shrink: 0;
}

.logo-text {
    font-size: 1.3rem;
    font-weight: 800;
    letter-spacing: 2px;
    color: #ffffff;
    line-height: 1;
}

.logo-sub {
    font-size: 0.7rem;
    font-weight: 500;
    letter-spacing: 4px;
    color: var(--accent);
}

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

.nav-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    border-radius: var(--radius-sm);
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
    margin-bottom: 4px;
    cursor: pointer;
}

.nav-item:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #ffffff;
}

.nav-item.active {
    background: var(--secondary);
    color: #ffffff;
    box-shadow: 0 2px 8px rgba(13, 115, 119, 0.3);
}

.nav-item i {
    width: 20px;
    text-align: center;
    font-size: 0.95rem;
}

.sidebar-footer {
    padding: 16px 20px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.notification-badge {
    position: relative;
    cursor: pointer;
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.2rem;
    transition: var(--transition);
}

.notification-badge:hover {
    color: #ffffff;
}

.badge-count {
    position: absolute;
    top: -8px;
    right: -10px;
    background: var(--danger);
    color: white;
    font-size: 0.7rem;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
}

.version {
    font-size: 0.75rem;
    color: rgba(255, 255, 255, 0.4);
}

/* ============================================================
   MOBILE HEADER
   ============================================================ */
.mobile-header {
    display: none;
    background: var(--primary);
    color: white;
    padding: 12px 16px;
    align-items: center;
    justify-content: space-between;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 99;
}

.menu-toggle {
    background: none;
    border: none;
    color: white;
    font-size: 1.4rem;
    cursor: pointer;
}

.mobile-logo {
    font-weight: 700;
    letter-spacing: 1px;
}

.mobile-notif {
    position: relative;
    cursor: pointer;
}

/* ============================================================
   MAIN CONTENT
   ============================================================ */
.main-content {
    margin-left: var(--sidebar-width);
    flex: 1;
    padding: 24px;
    min-height: 100vh;
    transition: margin-left 0.3s ease;
}

/* Periode Bar */
.periode-bar {
    background: var(--white);
    border-radius: var(--radius);
    padding: 16px 20px;
    margin-bottom: 20px;
    box-shadow: var(--shadow-sm);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    border: 1px solid var(--border);
}

.periode-selector {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.periode-selector label {
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--text-light);
    display: flex;
    align-items: center;
    gap: 6px;
}

.periode-selector select {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    background: var(--bg);
    color: var(--text);
    cursor: pointer;
    transition: var(--transition);
}

.periode-selector select:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(13, 115, 119, 0.1);
}

.periode-info {
    font-size: 0.85rem;
    color: var(--text-light);
    background: var(--bg);
    padding: 8px 14px;
    border-radius: var(--radius-sm);
}

.periode-info strong {
    color: var(--primary);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 10px 18px;
    border: none;
    border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    text-decoration: none;
    white-space: nowrap;
}

.btn-sm {
    padding: 7px 14px;
    font-size: 0.82rem;
}

.btn-primary {
    background: var(--secondary);
    color: #ffffff;
}

.btn-primary:hover {
    background: var(--secondary-light);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: #e9ecef;
}

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

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

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

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

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

/* ============================================================
   CARDS
   ============================================================ */
.card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 20px 24px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    margin-bottom: 20px;
    transition: var(--transition);
}

.card:hover {
    box-shadow: var(--shadow);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
    padding-bottom: 12px;
    border-bottom: 1px solid var(--border);
}

.card-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-header h3 i {
    color: var(--secondary);
}

/* Stat Cards */
.stat-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 16px;
    margin-bottom: 20px;
}

.stat-card {
    background: var(--white);
    border-radius: var(--radius);
    padding: 20px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border);
    display: flex;
    align-items: flex-start;
    gap: 14px;
    transition: var(--transition);
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    flex-shrink: 0;
}

.stat-icon.blue {
    background: var(--info-light);
    color: var(--info);
}

.stat-icon.green {
    background: var(--success-light);
    color: var(--success);
}

.stat-icon.gold {
    background: var(--warning-light);
    color: var(--accent);
}

.stat-icon.teal {
    background: #e6fffa;
    color: var(--secondary);
}

.stat-icon.red {
    background: var(--danger-light);
    color: var(--danger);
}

.stat-info h4 {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.stat-info .stat-value {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--text);
    line-height: 1.2;
}

.stat-info .stat-sub {
    font-size: 0.78rem;
    color: var(--text-light);
    margin-top: 2px;
}

/* ============================================================
   TABLES
   ============================================================ */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-sm);
    border: 1px solid var(--border);
}

table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
}

table th {
    background: var(--primary);
    color: #ffffff;
    padding: 12px 14px;
    text-align: left;
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

table td {
    padding: 10px 14px;
    border-bottom: 1px solid var(--border);
    color: var(--text);
}

table tbody tr {
    transition: var(--transition);
}

table tbody tr:hover {
    background: #f8fafc;
}

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

.text-right {
    text-align: right;
}

.text-center {
    text-align: center;
}

.badge {
    display: inline-block;
    padding: 4px 10px;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.badge-success {
    background: var(--success-light);
    color: var(--success);
}

.badge-warning {
    background: var(--warning-light);
    color: #b45309;
}

.badge-danger {
    background: var(--danger-light);
    color: var(--danger);
}

.badge-info {
    background: var(--info-light);
    color: var(--info);
}

/* ============================================================
   MODAL
   ============================================================ */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 200;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
    animation: fadeIn 0.2s ease;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

.modal {
    background: var(--white);
    border-radius: var(--radius-lg);
    width: 100%;
    max-width: 560px;
    max-height: 85vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.25s ease;
}

@keyframes slideUp {
    from {
        transform: translateY(20px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.modal-header {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    background: var(--white);
    z-index: 1;
}

.modal-header h3 {
    font-size: 1.1rem;
    font-weight: 700;
}

.modal-close {
    background: none;
    border: none;
    font-size: 1.4rem;
    cursor: pointer;
    color: var(--text-light);
    transition: var(--transition);
}

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

.modal-body {
    padding: 20px 24px;
}

.modal-footer {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    position: sticky;
    bottom: 0;
    background: var(--white);
}

/* Form Elements */
.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    font-weight: 600;
    margin-bottom: 6px;
    color: var(--text);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: 'Inter', sans-serif;
    font-size: 0.9rem;
    transition: var(--transition);
    background: var(--bg);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--secondary);
    box-shadow: 0 0 0 3px rgba(13, 115, 119, 0.1);
    background: var(--white);
}

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

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

/* ============================================================
   TOAST
   ============================================================ */
.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 300;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.toast {
    padding: 14px 20px;
    border-radius: var(--radius-sm);
    color: #ffffff;
    font-weight: 500;
    font-size: 0.9rem;
    box-shadow: var(--shadow-lg);
    animation: slideInRight 0.3s ease;
    display: flex;
    align-items: center;
    gap: 10px;
    min-width: 300px;
}

.toast-success {
    background: var(--success);
}

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

.toast-info {
    background: var(--info);
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ============================================================
   NOTIFICATION PANEL
   ============================================================ */
.notification-panel {
    position: fixed;
    top: 0;
    right: 0;
    width: 360px;
    max-width: 90vw;
    height: 100vh;
    background: var(--white);
    box-shadow: var(--shadow-lg);
    z-index: 150;
    animation: slideInRight 0.2s ease;
    display: flex;
    flex-direction: column;
}

.notif-header {
    padding: 18px 20px;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.notif-header h3 {
    font-size: 1.1rem;
}

.btn-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    color: var(--text-light);
}

.notif-list {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

.notif-item {
    padding: 12px 14px;
    border-radius: var(--radius-sm);
    margin-bottom: 8px;
    background: var(--bg);
    border-left: 3px solid var(--secondary);
    font-size: 0.85rem;
}

.notif-item.warning {
    border-left-color: var(--warning);
    background: var(--warning-light);
}

.notif-item.info {
    border-left-color: var(--info);
    background: var(--info-light);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 1024px) {
    .stat-cards {
        grid-template-columns: repeat(2, 1fr);
    }
}

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

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

    .mobile-header {
        display: flex;
    }

    .main-content {
        margin-left: 0;
        padding: 16px;
        padding-top: 70px;
    }

    .stat-cards {
        grid-template-columns: 1fr;
    }

    .periode-bar {
        flex-direction: column;
        align-items: flex-start;
    }

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

    .modal {
        max-width: 95vw;
        margin: 10px;
    }
}

@media (max-width: 480px) {
    table {
        font-size: 0.75rem;
    }
    table th,
    table td {
        padding: 8px 10px;
    }
    .stat-info .stat-value {
        font-size: 1.2rem;
    }
}