/**
 * JHEPP Portal - Main Stylesheet
 * Jabatan Hal Ehwal dan Pembangunan Pelajar
 * Politeknik Sultan Abdul Halim Mu'adzam Shah
 */

/* ========================================
   CSS Variables
======================================== */
:root {
    --primary-color: #1a5f7a;
    --primary-dark: #134b61;
    --primary-light: #2d8cb8;
    --secondary-color: #57c5b6;
    --accent-color: #159895;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --white: #ffffff;
    --gray-100: #f8f9fa;
    --gray-200: #e9ecef;
    --gray-300: #dee2e6;
    --gray-400: #ced4da;
    --gray-500: #adb5bd;
    --gray-600: #6c757d;
    --gray-700: #495057;
    --gray-800: #343a40;
    --gray-900: #212529;
    --font-primary: 'Roboto', sans-serif;
    --font-secondary: 'Open Sans', sans-serif;
    --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
    --border-radius: 0.5rem;
    --transition: all 0.3s ease;
}

/* ========================================
   Base Styles
======================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-primary);
    font-size: 16px;
    line-height: 1.6;
    color: var(--gray-800);
    background-color: var(--gray-100);
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--primary-dark);
}

img {
    max-width: 100%;
    height: auto;
}

/* ========================================
   Top Bar
======================================== */
.top-bar {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    padding: 8px 0;
    font-size: 0.85rem;
}

.top-bar-text {
    color: rgba(255, 255, 255, 0.9);
}

/* ========================================
   Main Navigation
======================================== */
.main-nav {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    padding: 10px 0;
    box-shadow: var(--shadow);
}

.main-nav .navbar-brand {
    display: flex;
    align-items: center;
    color: var(--white);
}

.main-nav .navbar-brand:hover {
    color: var(--white);
}

.nav-logo {
    height: 45px;
    margin-right: 10px;
}

.brand-text {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.brand-text strong {
    font-size: 1.3rem;
}

.brand-text small {
    font-size: 0.7rem;
    opacity: 0.8;
}

.main-nav .nav-link {
    color: rgba(255, 255, 255, 0.9);
    padding: 10px 15px;
    font-weight: 500;
    transition: var(--transition);
}

.main-nav .nav-link:hover,
.main-nav .nav-link.active {
    color: var(--white);
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
}

.main-nav .dropdown-menu {
    border: none;
    box-shadow: var(--shadow);
    border-radius: var(--border-radius);
    margin-top: 5px;
}

.main-nav .dropdown-item {
    padding: 10px 20px;
    font-size: 0.9rem;
}

.main-nav .dropdown-item:hover {
    background-color: var(--gray-100);
    color: var(--primary-color);
}

.user-menu {
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 25px;
    padding: 8px 15px !important;
}

/* ========================================
   Hero Section
======================================== */
.hero-section {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
    color: var(--white);
    padding: 80px 0;
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: 15px;
}

.hero-subtitle {
    font-size: 1.2rem;
    opacity: 0.9;
    margin-bottom: 30px;
}

.hero-buttons .btn {
    margin-right: 10px;
    margin-bottom: 10px;
    padding: 12px 30px;
}

/* ========================================
   Section Styles
======================================== */
.section {
    padding: 60px 0;
}

.section-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 10px;
    position: relative;
}

.section-subtitle {
    color: var(--gray-600);
    margin-bottom: 40px;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    margin-top: 10px;
    border-radius: 2px;
}

.section-title.text-center::after {
    margin-left: auto;
    margin-right: auto;
}

/* ========================================
   Cards
======================================== */
.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    overflow: hidden;
}

.card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-5px);
}

.card-header {
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    color: var(--white);
    border: none;
    padding: 15px 20px;
}

.card-body {
    padding: 20px;
}

.card-title {
    font-weight: 600;
    color: var(--gray-800);
}

/* ========================================
   Info Cards (Info Terkini)
======================================== */
.info-card {
    height: 100%;
}

.info-card .card-img-top {
    height: 200px;
    object-fit: cover;
}

.info-card .card-body {
    display: flex;
    flex-direction: column;
}

.info-card .card-title {
    font-size: 1.1rem;
    margin-bottom: 10px;
}

.info-card .card-text {
    flex-grow: 1;
    color: var(--gray-600);
}

.info-card .card-footer {
    background: transparent;
    border-top: 1px solid var(--gray-200);
    padding: 15px 20px;
}

.info-card .badge {
    font-weight: 500;
}

/* ========================================
   Organization Chart
======================================== */
.org-chart {
    text-align: center;
}

.org-chart-item {
    display: inline-block;
    margin: 10px;
}

.org-card {
    background: var(--white);
    border-radius: var(--border-radius);
    padding: 20px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    min-width: 180px;
}

.org-card:hover {
    box-shadow: var(--shadow);
    transform: translateY(-3px);
}

.org-card.ketua {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--white);
}

.org-card.ketua .org-name {
    color: var(--white);
}

.org-card.ketua .org-jawatan {
    color: rgba(255, 255, 255, 0.9);
}

.org-image {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 10px;
    border: 3px solid var(--gray-200);
}

.org-card.ketua .org-image {
    border-color: rgba(255, 255, 255, 0.5);
}

.org-name {
    font-weight: 600;
    color: var(--gray-800);
    margin-bottom: 5px;
}

.org-jawatan {
    font-size: 0.85rem;
    color: var(--gray-600);
}

.org-connector {
    height: 30px;
    border-left: 2px solid var(--gray-300);
    margin: 0 auto;
}

/* ========================================
   Buttons
======================================== */
.btn {
    border-radius: var(--border-radius);
    padding: 10px 20px;
    font-weight: 500;
    transition: var(--transition);
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

.btn-secondary {
    background: var(--secondary-color);
    border: none;
    color: var(--gray-800);
}

.btn-outline-primary {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

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

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

.btn-light:hover {
    background: var(--gray-100);
    color: var(--primary-dark);
}

/* ========================================
   Forms
======================================== */
.form-control {
    border-radius: var(--border-radius);
    padding: 12px 15px;
    border: 1px solid var(--gray-300);
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(26, 95, 122, 0.25);
}

.form-label {
    font-weight: 500;
    color: var(--gray-700);
}

.form-select {
    border-radius: var(--border-radius);
    padding: 12px 15px;
}

/* ========================================
   Badges
======================================== */
.badge {
    padding: 6px 12px;
    border-radius: 20px;
    font-weight: 500;
}

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

.badge-warning {
    background-color: var(--warning-color);
    color: var(--gray-800);
}

.badge-secondary {
    background-color: var(--gray-500);
}

/* ========================================
   Tables
======================================== */
.table {
    border-radius: var(--border-radius);
    overflow: hidden;
}

.table thead {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-dark));
    color: var(--white);
}

.table thead th {
    border: none;
    padding: 15px;
    font-weight: 500;
}

.table tbody td {
    padding: 12px 15px;
    vertical-align: middle;
}

.table tbody tr:hover {
    background-color: var(--gray-100);
}

/* ========================================
   Alerts
======================================== */
.alert {
    border: none;
    border-radius: var(--border-radius);
    padding: 15px 20px;
}

.alert-success {
    background-color: #d4edda;
    color: #155724;
}

.alert-danger {
    background-color: #f8d7da;
    color: #721c24;
}

.alert-warning {
    background-color: #fff3cd;
    color: #856404;
}

.alert-info {
    background-color: #d1ecf1;
    color: #0c5460;
}

/* ========================================
   Sidebar (Admin)
======================================== */
.sidebar {
    background: linear-gradient(180deg, var(--primary-color) 0%, var(--primary-dark) 100%);
    min-height: calc(100vh - 56px);
    color: var(--white);
    padding: 20px 0;
}

.sidebar .nav-link {
    color: rgba(255, 255, 255, 0.8);
    padding: 12px 20px;
    margin: 2px 10px;
    border-radius: var(--border-radius);
    transition: var(--transition);
}

.sidebar .nav-link:hover,
.sidebar .nav-link.active {
    background-color: rgba(255, 255, 255, 0.1);
    color: var(--white);
}

.sidebar .nav-link i {
    width: 20px;
    margin-right: 10px;
}

.sidebar-divider {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    margin: 15px 20px;
}

.sidebar-heading {
    font-size: 0.75rem;
    text-transform: uppercase;
    color: rgba(255, 255, 255, 0.5);
    padding: 10px 20px;
    margin-top: 10px;
}

/* ========================================
   Dashboard Stats
======================================== */
.stat-card {
    border-radius: var(--border-radius);
    padding: 20px;
    color: var(--white);
    position: relative;
    overflow: hidden;
}

.stat-card.primary {
    background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
}

.stat-card.success {
    background: linear-gradient(135deg, #28a745, #48c78e);
}

.stat-card.warning {
    background: linear-gradient(135deg, #ffc107, #ffdd57);
    color: var(--gray-800);
}

.stat-card.info {
    background: linear-gradient(135deg, #17a2b8, #3ec1d3);
}

.stat-card .stat-icon {
    position: absolute;
    right: 20px;
    top: 50%;
    transform: translateY(-50%);
    font-size: 3rem;
    opacity: 0.3;
}

.stat-card .stat-number {
    font-size: 2rem;
    font-weight: 700;
}

.stat-card .stat-label {
    font-size: 0.9rem;
    opacity: 0.9;
}

/* ========================================
   Footer
======================================== */
.main-footer {
    background: linear-gradient(135deg, var(--gray-800), var(--gray-900));
    color: var(--gray-300);
}

.footer-top {
    padding: 50px 0 30px;
}

.footer-widget {
    margin-bottom: 20px;
}

.footer-title {
    color: var(--white);
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
    position: relative;
}

.footer-title::after {
    content: '';
    position: absolute;
    left: 0;
    bottom: -8px;
    width: 40px;
    height: 3px;
    background: var(--secondary-color);
    border-radius: 2px;
}

.footer-text {
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer-links {
    list-style: none;
    padding: 0;
}

.footer-links li {
    margin-bottom: 10px;
}

.footer-links a {
    color: var(--gray-400);
    font-size: 0.9rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--secondary-color);
    padding-left: 5px;
}

.contact-info p {
    font-size: 0.9rem;
    margin-bottom: 10px;
}

.social-links {
    margin-top: 20px;
}

.social-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: rgba(255, 255, 255, 0.1);
    color: var(--white);
    border-radius: 50%;
    margin-right: 10px;
    transition: var(--transition);
}

.social-link:hover {
    background: var(--secondary-color);
    color: var(--white);
    transform: translateY(-3px);
}

.footer-bottom {
    background: rgba(0, 0, 0, 0.2);
    padding: 20px 0;
}

.copyright {
    font-size: 0.85rem;
    margin: 0;
}

.credits {
    font-size: 0.85rem;
    margin: 0;
}

.credits a {
    color: var(--secondary-color);
}

/* ========================================
   Login Page
======================================== */
.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
}

.login-card {
    max-width: 400px;
    width: 100%;
    padding: 30px;
    background: var(--white);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
}

.login-logo {
    text-align: center;
    margin-bottom: 30px;
}

.login-logo img {
    height: 80px;
}

.login-logo h3 {
    color: var(--primary-color);
    margin-top: 15px;
}

/* ========================================
   Activity Timeline
======================================== */
.activity-timeline {
    position: relative;
    padding-left: 30px;
}

.activity-timeline::before {
    content: '';
    position: absolute;
    left: 10px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: var(--gray-200);
}

.activity-item {
    position: relative;
    padding-bottom: 20px;
    margin-bottom: 20px;
}

.activity-item::before {
    content: '';
    position: absolute;
    left: -24px;
    top: 5px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--primary-color);
    border: 2px solid var(--white);
}

.activity-date {
    font-size: 0.8rem;
    color: var(--gray-500);
}

/* ========================================
   Responsive Design
======================================== */
@media (max-width: 991px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-section {
        padding: 60px 0;
    }
    
    .section {
        padding: 40px 0;
    }
}

@media (max-width: 767px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .section-title {
        font-size: 1.5rem;
    }
    
    .top-bar {
        display: none;
    }
    
    .navbar-brand {
        font-size: 1rem;
    }
    
    .stat-card {
        margin-bottom: 15px;
    }
}

/* ========================================
   Utility Classes
======================================== */
.bg-gradient-primary {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
}

.text-primary {
    color: var(--primary-color) !important;
}

.text-accent {
    color: var(--accent-color);
}

.shadow-sm {
    box-shadow: var(--shadow-sm);
}

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

.rounded {
    border-radius: var(--border-radius);
}

/* ========================================
   Page Header
======================================== */
.page-header {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--white);
    padding: 40px 0;
    margin-bottom: 30px;
}

.page-header h1 {
    font-size: 2rem;
    margin-bottom: 10px;
}

.page-header .breadcrumb {
    background: transparent;
    padding: 0;
    margin: 0;
}

.page-header .breadcrumb-item a {
    color: rgba(255, 255, 255, 0.8);
}

.page-header .breadcrumb-item.active {
    color: var(--white);
}

.page-header .breadcrumb-item + .breadcrumb-item::before {
    color: rgba(255, 255, 255, 0.5);
}

/* ========================================
   Empty State
======================================== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-state i {
    font-size: 4rem;
    color: var(--gray-300);
    margin-bottom: 20px;
}

.empty-state h4 {
    color: var(--gray-600);
    margin-bottom: 10px;
}

.empty-state p {
    color: var(--gray-500);
}

/* ========================================
   Loading Spinner
======================================== */
.spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}