/* ===== SRL Academy Admin Panel ===== */
@import url('https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:opsz,wght,FILL,GRAD@24,400,0,0');

/* ===== CSS VARIABLES ===== */
:root {
    /* Colors - matching main website */
    --primary: #800000;
    --primary-dark: #5e0f0f;
    --primary-light: #865b5b;
    --secondary: #f59e0b;
    --accent: #10b981;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-500: #6b7280;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --white: #ffffff;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;

    /* Typography */
    --font-primary: 'Oswald', sans-serif;
    --font-secondary: 'Inter', sans-serif;

    /* Spacing */
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-12: 3rem;
    --space-16: 4rem;

    /* Border Radius */
    --radius: 8px;
    --radius-lg: 1rem;

    /* Shadows */
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition: 300ms ease;
}

/* ===== RESET & BASE ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-secondary);
    line-height: 1.6;
    color: var(--gray-700);
    background: var(--gray-50);
}

/* ===== LOGIN SCREEN ===== */
.login-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.login-container {
    width: 100%;
    max-width: 400px;
    padding: 0 1rem;
}

.login-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: var(--space-8);
    box-shadow: var(--shadow-lg);
}

.login-header {
    text-align: center;
    margin-bottom: var(--space-6);
}

.login-header .brand-badge {
    width: 60px;
    height: 60px;
    border-radius: 12px;
    background: var(--primary);
    color: var(--white);
    display: grid;
    place-items: center;
    font-family: var(--font-primary);
    font-weight: 700;
    font-size: 2rem;
    margin: 0 auto var(--space-4);
    box-shadow: var(--shadow);
}

.login-header h2 {
    font-family: var(--font-primary);
    font-size: 2rem;
    color: var(--gray-900);
    margin-bottom: var(--space-2);
}

.login-header p {
    color: var(--gray-500);
    font-size: 0.9rem;
}

.login-form {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.form-group label {
    font-weight: 600;
    color: var(--gray-700);
    font-size: 0.9rem;
}

.form-group input {
    padding: 0.75rem;
    font-size: 1rem;
    transition: var(--transition);
}

.form-group input:focus {
    outline: none;
}

/* Password Input Container */
.password-input-container {
    position: relative;
    display: flex;
    align-items: center;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius);
    background: var(--white);
}

.password-input-container input {
    border: none;
    box-shadow: none;
    outline: none;
    flex: 1;
    padding-right: 0;
}

.password-input-container input:focus {
    border: none;
    box-shadow: none;
}

.password-input-container:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(128, 0, 0, 0.1);
}

.password-toggle {
    position: static;
    margin-right: 0.25rem;
    background: none;
    border: none;
    color: var(--gray-500);
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--radius);
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
}

.password-toggle:hover {
    background: var(--gray-100);
    color: var(--primary);
}

.password-toggle .material-symbols-outlined {
    font-size: 20px;
}

.error-message {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger);
    padding: var(--space-3);
    border-radius: var(--radius);
    text-align: center;
    font-size: 0.9rem;
    margin-top: var(--space-4);
}

/* ===== ADMIN PANEL ===== */
.admin-panel {
    display: flex;
    flex-direction: column;
    height: 100vh;
    background: var(--gray-50);
}

/* Header */
.admin-header {
    background: var(--white);
    border-bottom: 1px solid var(--gray-200);
    padding: var(--space-3) var(--space-6);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow);
    z-index: 100;
}

.header-left {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.header-left .brand-badge {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    background: var(--primary);
    color: var(--white);
    display: grid;
    place-items: center;
    font-family: var(--font-primary);
    font-weight: 700;
    font-size: 1.2rem;
    box-shadow: var(--shadow);
}

.brand-text {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    justify-content: center;
}

.brand-line-1 {
    color: var(--gray-900);
    font-weight: 700;
    font-size: 1.2rem;
    font-family: var(--font-primary);
}

/* ===== SIDEBAR TOGGLE (DESKTOP) ===== */
.sidebar-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--gray-500);
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius);
    transition: var(--transition);
    margin-right: var(--space-2);
}

.sidebar-toggle:hover {
    background: var(--gray-100);
    color: var(--gray-800);
}

/* Admin Container */
.admin-container {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Sidebar */
.admin-sidebar {
    width: 280px;
    background: var(--white);
    border-right: 1px solid var(--gray-200);
    overflow-y: auto;
    transition: var(--transition);
}

.sidebar-nav {
    padding: var(--space-4) 0;
}

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

.nav-item {
    margin-bottom: var(--space-2);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-6);
    color: var(--gray-700);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    background: var(--gray-50);
    color: var(--primary);
}

.nav-link.active {
    background: rgba(128, 0, 0, 0.1);
    color: var(--primary);
}

.nav-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--primary);
}

.nav-link .material-symbols-outlined {
    font-size: 20px;
}

.nav-link .dropdown-icon {
    margin-left: auto;
    transition: transform 0.3s ease;
}

.nav-link.active .dropdown-icon {
    transform: rotate(180deg);
}

/* Sub Navigation */
.sub-nav {
    list-style: none;
    margin-left: var(--space-8);
    margin-top: var(--space-2);
    /* HIDDEN BY DEFAULT */
    display: none;
}

/* REMOVED: .nav-item:hover .sub-nav { display: block; } */

/* NEW: Open only when parent has 'expanded' class */
.nav-item.expanded .sub-nav {
    display: block;
}

/* Rotate icon when expanded */
.nav-item.expanded .dropdown-icon {
    transform: rotate(180deg);
}

/* Keep open if any sub-link is active (Persistence) */
.nav-item:has(.sub-nav-link.active) .sub-nav {
    display: block;
}

/* Keep open if any sub-link is active (Double Safety) */
.nav-item:has(.sub-nav-link.active) .sub-nav {
    display: block;
}

.sub-nav-link {
    display: block;
    padding: var(--space-2) var(--space-4);
    color: var(--gray-600);
    text-decoration: none;
    font-size: 0.9rem;
    border-radius: var(--radius);
    transition: var(--transition);
}

.sub-nav-link:hover {
    background: var(--gray-50);
    color: var(--primary);
}

.sub-nav-link.active {
    background: rgba(128, 0, 0, 0.1);
    color: var(--primary);
}

/* Main Content */
.admin-content {
    flex: 1;
    overflow-y: auto;
    background: var(--gray-50);
    position:  relative;
}

/* ===== BUTTONS ===== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius);
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
}

.btn-primary {
    background: var(--primary);
    color: var(--white);
}

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

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

.btn-outline:hover {
    background: var(--primary);
    color: var(--white);
}

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

.btn-success:hover {
    background: #059669;
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn-warning {
    background: var(--warning);
    color: var(--white);
}

.btn-warning:hover {
    background: #d97706;
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

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

.btn-danger:hover {
    background: #dc2626;
    transform: translateY(-1px);
    box-shadow: var(--shadow);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.1rem;
}

/* ===== LOGIN BUTTON LOADING STATES ===== */
.btn-content,
.btn-loading {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    transition: opacity 0.3s ease;
}

.spinning {
    animation: spin 1s linear infinite;
}

/* ===== LOADING OVERLAY ===== */
.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    z-index: 50;
    backdrop-filter: blur(2px);
    border-radius: var(--radius-lg);
}

/* In-Content Loader Styles */
.data-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 3rem;
    width: 100%;
    grid-column: 1 / -1; /* Ensures it spans full width in grids */
    color: var(--gray-500);
}

.data-loading .loader {
    margin-bottom: 1rem; /* Space between spinner and text */
}
.loader {
    width: 40px;
    height: 40px;
    border: 3px solid var(--gray-200);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--space-4);
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

.loading-overlay p {
    color: var(--gray-600);
    font-weight: 500;
}

/* ===== NOTIFICATIONS ===== */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: var(--space-4);
    border-radius: var(--radius);
    color: var(--white);
    font-weight: 500;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    z-index: 9999;
    max-width: 300px;
    box-shadow: var(--shadow-lg);
}

.notification.show {
    transform: translateX(0);
}

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

.notification-warning {
    background: var(--warning);
}

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

/* ===== UTILITY CLASSES ===== */
.hidden {
    display: none !important;
}

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

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

.mb-2 {
    margin-bottom: var(--space-2);
}

.mb-3 {
    margin-bottom: var(--space-3);
}

.mb-4 {
    margin-bottom: var(--space-4);
}

.mb-6 {
    margin-bottom: var(--space-6);
}

.mt-2 {
    margin-top: var(--space-2);
}

.mt-3 {
    margin-top: var(--space-3);
}

.mt-4 {
    margin-top: var(--space-4);
}

.mt-6 {
    margin-top: var(--space-6);
}

.p-2 {
    padding: var(--space-2);
}

.p-3 {
    padding: var(--space-3);
}

.p-4 {
    padding: var(--space-4);
}

.p-6 {
    padding: var(--space-6);
}

/* ===== RESPONSIVE DESIGN & MOBILE MENU ===== */

/* Backdrop Overlay */
.mobile-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 9999;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s;
    backdrop-filter: blur(2px);
}

.mobile-backdrop.show {
    opacity: 1;
    visibility: visible;
}

/* Mobile Menu Container */
.mobile-menu {
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100vh;
    background: var(--white);
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.15);
    z-index: 10000;
    transform: translateX(-100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    display: flex;
    flex-direction: column;
    overflow-y: auto;
}

.mobile-menu.open {
    transform: translateX(0);
}

.mobile-menu-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4);
    border-bottom: 1px solid var(--gray-200);
    background: var(--gray-50);
}

.mobile-menu-header .brand-badge {
    width: 40px;
    height: 40px;
    background: var(--primary);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-primary);
    font-weight: 700;
    font-size: 1.2rem;
}

.mobile-menu-close {
    background: none;
    border: none;
    color: var(--gray-500);
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius);
    transition: var(--transition);
}

.mobile-menu-close:hover {
    background: var(--gray-200);
    color: var(--gray-700);
}

/* Mobile Nav Links */
.mobile-nav {
    padding: var(--space-4) 0;
}

.mobile-nav-list {
    list-style: none;
    margin: 0;
    padding: 0;
}

.mobile-nav-item {
    margin-bottom: 2px;
}

.mobile-nav-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    /* Keeps arrow to right */
    padding: var(--space-3) var(--space-4);
    color: var(--gray-700);
    text-decoration: none;
    border-radius: var(--radius);
    transition: all 0.2s ease;
    font-weight: 500;
    margin: 0 var(--space-2);
}

.link-content {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
    background: rgba(128, 0, 0, 0.08);
    color: var(--primary);
}

.mobile-nav-link .material-symbols-outlined {
    font-size: 20px;
}

.mobile-nav-link .arrow-icon {
    transition: transform 0.3s ease;
    font-size: 1.2rem;
}

/* Accordion Active State */
.mobile-nav-link[aria-expanded="true"] {
    background: var(--gray-100);
    color: var(--primary);
}

.mobile-nav-link[aria-expanded="true"] .arrow-icon {
    transform: rotate(180deg);
}

/* Mobile Sub Nav (Accordion) */
.mobile-sub-nav {
    list-style: none;
    margin: 0 var(--space-2);
    padding: 0;
    max-height: 0;
    /* Hidden by default */
    overflow: hidden;
    transition: max-height 0.3s ease-in-out;
}

.mobile-sub-nav.expanded {
    max-height: 300px;
    margin-bottom: var(--space-2);
}

.mobile-sub-nav-link {
    display: block;
    padding: var(--space-2) var(--space-3);
    margin-left: var(--space-4);
    color: var(--gray-600);
    text-decoration: none;
    border-radius: var(--radius);
    transition: var(--transition);
    font-size: 0.9rem;
    border-left: 2px solid transparent;
}

.mobile-sub-nav-link:hover {
    color: var(--primary);
    background: var(--gray-50);
}

.mobile-sub-nav-link.active {
    color: var(--primary);
    background: var(--gray-50);
    border-left-color: var(--primary);
    font-weight: 600;
}

/* Mobile Header & Toggle */
.mobile-menu-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    background: none;
    border: 1px solid var(--gray-300);
    color: var(--gray-600);
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius);
    transition: var(--transition);
    margin-right: var(--space-2);
}

.mobile-menu-toggle:hover {
    background: var(--gray-100);
    color: var(--gray-800);
    border-color: var(--gray-400);
}

/* Media Queries */
@media (max-width: 768px) {
    .admin-sidebar {
        display: none;
    }

    .sidebar-toggle {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

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

    .admin-header {
        padding: var(--space-3) var(--space-4);
    }

    .brand-line-1 {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .login-card {
        padding: var(--space-6);
    }

    .admin-header {
        padding: var(--space-2) var(--space-3);
    }

    .header-left .brand-badge {
        width: 32px;
        height: 32px;
        font-size: 1rem;
    }

    .brand-line-1 {
        font-size: 0.9rem;
    }
}

/* Collapsed Sidebar State */
.admin-sidebar.collapsed {
    width: 0;
    border-right: none;
    overflow: hidden;
    /* Hides content when width is 0 */
}