/* ================================================================
   e-Madrasah · custom.css  v4.0
   Stack   : Bootstrap 5 · Font Awesome 6
   Tema    : Modern Emerald — Professional, Lightweight, Clean
   ================================================================ */

:root {
    /* Brand — Modern Islamic Emerald */
    --em-green-950: #022c22;
    --em-green-900: #064e3b;
    --em-green-800: #065f46;
    --em-green-700: #047857;   /* primary */
    --em-green-600: #059669;
    --em-green-500: #10b981;
    --em-green-200: #a7f3d0;
    --em-green-100: #d1fae5;
    --em-green-50 : #f0fdf4;

    --em-gold      : #b45309;
    --em-gold-light: #fef3c7;

    /* Neutrals - Slate style */
    --em-gray-950: #020617;
    --em-gray-900: #0f172a;
    --em-gray-800: #1e293b;
    --em-gray-700: #334155;
    --em-gray-600: #475569;
    --em-gray-500: #64748b;
    --em-gray-400: #94a3b8;
    --em-gray-300: #cbd5e1;
    --em-gray-200: #e2e8f0;
    --em-gray-100: #f1f5f9;
    --em-gray-50 : #f8fafc;
    --em-white   : #ffffff;

    /* Semantic */
    --em-primary        : var(--em-green-700);
    --em-primary-dark   : var(--em-green-800);
    --em-primary-darker : var(--em-green-900);
    --em-surface        : var(--em-white);
    --em-bg             : #f1f5f9;
    --em-border         : #e2e8f0;
    --em-text           : #1e293b;
    --em-text-muted     : #64748b;

    /* Layout */
    --em-sidebar-w          : 260px;
    --em-sidebar-collapsed-w: 75px;
    --em-header-h           : 0px; /* Optional jika nanti ada top header */

    /* Radius */
    --em-r-md  : 10px;
    --em-r-lg  : 14px;
    --em-r-xl  : 20px;
    --em-r-full: 9999px;

    /* Transition */
    --em-ease         : cubic-bezier(0.4, 0, 0.2, 1);
    --em-dur          : 250ms;
}

/* Base Styles */
body {
    font-family: 'DM Sans', 'Segoe UI', system-ui, sans-serif;
    background: var(--em-bg);
    color: var(--em-text);
    font-size: 0.9rem;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Plus Jakarta Sans', sans-serif;
    font-weight: 700;
}

/* ── Layout Structure ── */
.em-layout {
    display: flex;
    min-height: 100vh;
}

.em-main {
    flex: 1;
    min-width: 0;
    padding: 24px;
    margin-left: var(--em-sidebar-w);
    transition: margin-left var(--em-dur) var(--em-ease);
}

.em-sidebar.is-collapsed + .em-main {
    margin-left: var(--em-sidebar-collapsed-w);
}

/* Responsive Main Content */
@media (max-width: 991.98px) {
    .em-main {
        margin-left: 0 !important;
        padding: 16px;
        padding-top: 80px; /* Space for mobile fab toggle */
    }
}

/* ── Sidebar ── */
.em-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    width: var(--em-sidebar-w);
    background: var(--em-white);
    border-right: 1px solid var(--em-border);
    z-index: 1040;
    display: flex;
    flex-direction: column;
    transition: width var(--em-dur) var(--em-ease), transform var(--em-dur) var(--em-ease);
}

.em-sidebar.is-collapsed {
    width: var(--em-sidebar-collapsed-w);
}

@media (max-width: 991.98px) {
    .em-sidebar {
        transform: translateX(-100%);
    }
    .em-sidebar.is-open {
        transform: translateX(0);
    }
}

.em-sidebar__header {
    height: 72px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 20px;
    background: linear-gradient(135deg, var(--em-green-900) 0%, var(--em-green-700) 100%);
    color: white;
    flex-shrink: 0;
}

.em-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    overflow: hidden;
}

.em-brand__logo {
    width: 32px;
    height: 32px;
    background: rgba(255,255,255,0.2);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.em-brand__text {
    display: flex;
    flex-direction: column;
    transition: opacity var(--em-dur);
}

.em-sidebar.is-collapsed .em-brand__text {
    opacity: 0;
    pointer-events: none;
}

.em-brand__title {
    font-weight: 800;
    font-size: 1.1rem;
    line-height: 1.2;
    letter-spacing: -0.02em;
}

.em-brand__sub {
    font-size: 0.7rem;
    opacity: 0.8;
}

.em-sidebar-toggle {
    background: rgba(255,255,255,0.1);
    border: none;
    color: white;
    width: 28px;
    height: 28px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s;
}

.em-sidebar-toggle:hover {
    background: rgba(255,255,255,0.2);
}

.em-sidebar.is-collapsed .em-sidebar-toggle i {
    transform: rotate(180deg);
}

@media (max-width: 991.98px) {
    .em-sidebar-toggle#sidebarToggleDesktop {
        display: none;
    }
}

/* Sidebar Inner Scroll */
.em-sidebar__inner {
    flex: 1;
    overflow-y: auto;
    padding: 20px 12px;
}

.em-sidebar__inner::-webkit-scrollbar {
    width: 4px;
}
.em-sidebar__inner::-webkit-scrollbar-thumb {
    background: var(--em-gray-200);
    border-radius: 10px;
}

/* Nav Groups */
.em-nav__group {
    margin-bottom: 24px;
}

.em-nav__label {
    display: block;
    padding: 0 12px;
    margin-bottom: 8px;
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--em-gray-400);
    transition: opacity var(--em-dur);
}

.em-sidebar.is-collapsed .em-nav__label {
    opacity: 0;
}

/* Nav Links */
.em-nav__link {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    color: var(--em-gray-600);
    text-decoration: none;
    border-radius: var(--em-r-md);
    transition: all 0.2s;
    margin-bottom: 2px;
    position: relative;
}

.em-nav__link:hover {
    background: var(--em-gray-50);
    color: var(--em-primary);
}

.em-nav__link.is-active {
    background: var(--em-green-50);
    color: var(--em-primary);
    font-weight: 600;
}

.em-nav__icon {
    width: 20px;
    height: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
    margin-right: 12px;
}

.em-sidebar.is-collapsed .em-nav__icon {
    margin-right: 0;
}

.em-nav__text {
    font-size: 0.875rem;
    white-space: nowrap;
    transition: opacity var(--em-dur);
}

.em-sidebar.is-collapsed .em-nav__text {
    opacity: 0;
    pointer-events: none;
}

/* Dropdowns in Sidebar */
.em-nav__dropdown-toggle {
    display: flex;
    align-items: center;
    padding: 10px 12px;
    color: var(--em-gray-600);
    cursor: pointer;
    border-radius: var(--em-r-md);
    transition: all 0.2s;
}

.em-nav__dropdown-toggle:hover {
    background: var(--em-gray-50);
    color: var(--em-primary);
}

.em-dropdown-icon {
    margin-left: auto;
    font-size: 0.75rem;
    transition: transform 0.3s;
}

.em-nav__dropdown.is-open .em-dropdown-icon {
    transform: rotate(180deg);
}

.em-nav__dropdown-menu {
    display: none;
    padding-left: 32px;
    flex-direction: column;
    gap: 2px;
    margin-top: 4px;
}

.em-nav__dropdown.is-open .em-nav__dropdown-menu {
    display: flex;
}

.em-nav__link--sub {
    padding: 8px 12px;
    font-size: 0.8rem;
}

.em-sidebar.is-collapsed .em-nav__dropdown-toggle .em-dropdown-icon,
.em-sidebar.is-collapsed .em-nav__dropdown-menu {
    display: none !important;
}

/* Sidebar Footer */
.em-sidebar__footer {
    padding: 16px;
    border-top: 1px solid var(--em-border);
    background: var(--em-gray-50);
}

.em-user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    position: relative;
}

.em-user-avatar {
    width: 36px;
    height: 36px;
    background: var(--em-primary);
    color: white;
    border-radius: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.em-user-details {
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transition: opacity var(--em-dur);
}

.em-sidebar.is-collapsed .em-user-details {
    opacity: 0;
    pointer-events: none;
}

.em-user-name {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--em-gray-800);
    white-space: nowrap;
    text-overflow: ellipsis;
    overflow: hidden;
}

.em-user-role {
    font-size: 0.7rem;
    color: var(--em-gray-500);
}

.em-logout-form {
    margin-left: auto;
}

.em-sidebar.is-collapsed .em-logout-form {
    display: none;
}

.em-logout-btn {
    background: none;
    border: none;
    color: var(--em-gray-400);
    padding: 4px;
    transition: color 0.2s;
}

.em-logout-btn:hover {
    color: var(--em-primary);
}

.em-sidebar__version {
    margin-top: 12px;
    font-size: 0.65rem;
    color: var(--em-gray-400);
    text-align: center;
}

.em-sidebar.is-collapsed .em-sidebar__version {
    display: none;
}

/* Overlay */
.em-sidebar-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 1030;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
    backdrop-filter: blur(2px);
}

.em-sidebar-overlay.is-visible {
    opacity: 1;
    visibility: visible;
}

/* Mobile Toggle FAB */
.em-mobile-menu-btn {
    position: fixed;
    bottom: 24px;
    right: 24px;
    width: 56px;
    height: 56px;
    border-radius: 50%;
    background: var(--em-primary);
    color: white;
    border: none;
    box-shadow: 0 4px 15px rgba(4, 120, 87, 0.4);
    z-index: 1050;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.4rem;
    cursor: pointer;
    transition: all 0.3s;
}

.em-mobile-menu-btn:hover {
    transform: scale(1.1);
}

/* Footer */
.em-footer {
    padding: 20px;
    text-align: center;
    color: var(--em-gray-500);
    font-size: 0.8rem;
    background: var(--em-white);
    border-top: 1px solid var(--em-border);
    margin-left: var(--em-sidebar-w);
    transition: margin-left var(--em-dur) var(--em-ease);
}

.em-sidebar.is-collapsed ~ .em-footer {
    margin-left: var(--em-sidebar-collapsed-w);
}

@media (max-width: 991.98px) {
    .em-footer {
        margin-left: 0 !important;
    }
}

/* Cards & Components */
.card {
    border-radius: 12px !important;
    border: 1px solid var(--em-border) !important;
    box-shadow: 0 2px 4px rgba(0,0,0,0.02) !important;
    background: var(--em-white);
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.05), 0 4px 6px -2px rgba(0,0,0,0.02) !important;
}

/* Alerts */
.em-alert {
    display: flex;
    align-items: center;
    padding: 12px 16px;
    border-radius: 10px;
    margin-bottom: 20px;
    border: 1px solid transparent;
}

.em-alert-success {
    background: var(--em-green-50);
    border-color: var(--em-green-200);
    color: var(--em-green-800);
}

.em-alert-danger {
    background: #fef2f2;
    border-color: #fecaca;
    color: #991b1b;
}

.em-alert-icon {
    font-size: 1.2rem;
    margin-right: 12px;
}

.em-alert-content {
    font-weight: 500;
}

/* Buttons */
.btn-primary {
    background: var(--em-primary);
    border: none;
    padding: 8px 20px;
    font-weight: 600;
    box-shadow: 0 4px 10px rgba(4, 120, 87, 0.2);
}

.btn-primary:hover {
    background: var(--em-primary-dark);
    box-shadow: 0 6px 15px rgba(4, 120, 87, 0.3);
}

/* Utils */
.fade-in {
    animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ================================================================
   Jadwal Grid Styles
   ================================================================ */
.grid-scroll-shell {
    overflow-x: auto;
    background: var(--em-white);
    border-radius: var(--em-r-lg);
    border: 1px solid var(--em-border);
    margin-bottom: 80px;
    box-shadow: 0 4px 6px -1px rgba(0,0,0,0.05);
}

.grid-table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    table-layout: fixed;
}

.grid-table th, .grid-table td {
    border-right: 1px solid var(--em-border);
    border-bottom: 1px solid var(--em-border);
}

.grid-table th {
    background: var(--em-gray-50);
    padding: 12px;
    font-weight: 700;
    text-align: center;
    color: var(--em-gray-700);
    position: sticky;
    top: 0;
    z-index: 10;
}

.col-header-jam {
    width: 120px;
    z-index: 20 !important;
    left: 0;
    background: var(--em-gray-100) !important;
}

.col-header {
    min-width: 100px;
}

.day-row {
    background: var(--em-green-50);
}

.day-label {
    display: block;
    padding: 8px 16px;
    font-weight: 800;
    color: var(--em-primary);
    text-transform: uppercase;
    font-size: 0.85rem;
    letter-spacing: 0.05em;
}

.sesi-cell {
    padding: 10px !important;
    background: var(--em-gray-50);
    position: sticky;
    left: 0;
    z-index: 5;
    text-align: center;
}

.sesi-no {
    display: block;
    font-weight: 700;
    color: var(--em-primary);
    font-size: 0.8rem;
}

.sesi-time {
    display: block;
    font-size: 0.7rem;
    color: var(--em-gray-500);
}

.input-cell {
    padding: 0 !important;
    height: 50px;
}

.grid-input {
    width: 100%;
    height: 100%;
    border: none;
    background: transparent;
    text-align: center;
    font-weight: 700;
    font-size: 1rem;
    color: var(--em-gray-800);
    padding: 8px;
    transition: all 0.2s;
}

.grid-input:focus {
    outline: 2px solid var(--em-primary);
    background: var(--em-white);
    z-index: 2;
    position: relative;
    box-shadow: 0 0 10px rgba(4, 120, 87, 0.1);
}

.grid-input.has-value {
    background: var(--em-green-50);
    color: var(--em-primary);
}

.grid-input.changed {
    background: #fffbeb;
    color: #b45309;
    box-shadow: inset 0 0 0 2px #fef3c7;
}

.grid-input.conflict {
    background: #fef2f2;
    color: #991b1b;
    box-shadow: inset 0 0 0 2px #fecaca;
}

/* Page Header & Elements */
.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.page-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--em-gray-900);
}

.page-subtitle {
    font-size: 0.85rem;
    color: var(--em-gray-500);
}

.btn-kode {
    background: var(--em-white);
    border: 1px solid var(--em-border);
    padding: 8px 16px;
    border-radius: var(--em-r-md);
    font-weight: 600;
    color: var(--em-gray-700);
    text-decoration: none;
    transition: all 0.2s;
}

.btn-kode:hover {
    background: var(--em-gray-50);
    border-color: var(--em-gray-300);
}

.btn-save {
    background: var(--em-primary);
    border: none;
    padding: 8px 24px;
    border-radius: var(--em-r-md);
    font-weight: 700;
    color: var(--em-white);
    box-shadow: 0 4px 12px rgba(4, 120, 87, 0.2);
    transition: all 0.2s;
}

.btn-save:not(:disabled):hover {
    background: var(--em-primary-dark);
    transform: translateY(-1px);
    box-shadow: 0 6px 16px rgba(4, 120, 87, 0.3);
}

.btn-save:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    background: var(--em-gray-400);
    box-shadow: none;
}

.changes-pill {
    background: var(--em-gold);
    color: white;
    padding: 1px 8px;
    border-radius: 10px;
    font-size: 0.7rem;
    margin-left: 6px;
}

/* Legend */
.legend {
    display: flex;
    gap: 20px;
    margin-bottom: 16px;
    font-size: 0.75rem;
    color: var(--em-gray-600);
    background: var(--em-white);
    padding: 12px 16px;
    border-radius: var(--em-r-md);
    border: 1px solid var(--em-border);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 6px;
}

.legend-dot {
    width: 10px;
    height: 10px;
    border-radius: 2px;
}

.legend-dot.filled { background: var(--em-green-100); border: 1px solid var(--em-green-200); }
.legend-dot.changed { background: #fef3c7; border: 1px solid #fde68a; }
.legend-dot.conflict { background: #fee2e2; border: 1px solid #fecaca; }
.legend-dot.empty { background: var(--em-white); border: 1px solid var(--em-border); }

/* Status Bar */
.status-bar {
    position: fixed;
    bottom: 0;
    left: var(--em-sidebar-w);
    right: 0;
    height: 56px;
    background: var(--em-white);
    border-top: 1px solid var(--em-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 24px;
    z-index: 1000;
    transition: left var(--em-dur) var(--em-ease);
}

.em-sidebar.is-collapsed + .em-main + .status-bar {
    left: var(--em-sidebar-collapsed-w);
}

@media (max-width: 991.98px) {
    .status-bar {
        left: 0 !important;
    }
}

.status-text {
    display: flex;
    align-items: center;
    gap: 12px;
    font-weight: 500;
    color: var(--em-gray-700);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--em-gray-300);
}

.status-dot.active { background: var(--em-gold); animation: pulse 1s infinite; }
.status-dot.saved { background: var(--em-primary); }
.status-dot.error { background: #ef4444; }

@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.5); opacity: 0.5; }
    100% { transform: scale(1); opacity: 1; }
}

/* Tooltip & Badge */
.guru-tooltip {
    position: absolute;
    z-index: 2000;
    background: var(--em-gray-900);
    color: white;
    padding: 8px 12px;
    border-radius: 8px;
    font-size: 0.8rem;
    box-shadow: 0 10px 15px -3px rgba(0,0,0,0.3);
    pointer-events: none;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.2s;
}

.guru-tooltip.visible {
    opacity: 1;
    transform: translateY(0);
}

.tt-name { font-weight: 700; margin-bottom: 2px; }
.tt-sub { font-size: 0.7rem; color: var(--em-gray-400); }

.kode-badge {
    background: var(--em-green-100);
    color: var(--em-primary);
    font-weight: 700;
    padding: 2px 6px;
    border-radius: 4px;
    font-size: 0.75rem;
}