/**
 * SkillUp - Custom CSS
 * Computer Center Management System
 */

/* ============================================
   ROOT VARIABLES
   ============================================ */
:root {
    /* Purple/Blue Gradient Colors */
    --primary-color: #6366f1;
    --secondary-color: #8b5cf6;
    --accent-color: #ec4899;
    --gradient-start: #667eea;
    --gradient-end: #764ba2;

    /* Neutral Colors */
    --dark: #1f2937;
    --light: #f9fafb;
    --white: #ffffff;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-600: #4b5563;
    --gray-800: #1f2937;

    /* Status Colors */
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --info: #3b82f6;

    /* Spacing */
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 1rem;
    --radius-full: 9999px;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

/* ============================================
   GLOBAL STYLES
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--gray-800);
    background-color: var(--gray-100);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ============================================
   GRADIENT BACKGROUNDS
   ============================================ */
.gradient-bg {
    background: linear-gradient(135deg, var(--gradient-start) 0%, var(--gradient-end) 100%);
}

.gradient-purple-blue {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

.gradient-overlay {
    position: relative;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.9) 0%, rgba(118, 75, 162, 0.9) 100%);
}

.gradient-text {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   HERO SECTION
   ============================================ */
/* Page Header Spacing for Fixed Navbar */
.page-header-spacing {
    padding-top: 8rem !important;
}

.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    padding: 8rem 2rem 2rem 2rem;
    /* Increased top padding */
    position: relative;
    overflow: hidden;
}

/* ============================================
   BIG FOOTER
   ============================================ */
.footer-section {
    background: #151414;
    position: relative;
    color: #fff;
}

.footer-cta {
    border-bottom: 1px solid #373636;
    padding: 3rem 0;
}

.single-cta i {
    color: var(--primary-color);
    font-size: 30px;
    float: left;
    margin-top: 8px;
}

.cta-text {
    padding-left: 15px;
    display: inline-block;
}

.cta-text h4 {
    color: #fff;
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 2px;
}

.cta-text span {
    color: #757575;
    font-size: 15px;
}

.footer-content {
    position: relative;
    z-index: 2;
    padding: 4rem 0;
}

.footer-logo {
    margin-bottom: 30px;
}

.footer-logo img {
    max-width: 200px;
}

.footer-text p {
    margin-bottom: 14px;
    font-size: 14px;
    color: #7e7e7e;
    line-height: 28px;
}

.footer-social-icon span {
    color: #fff;
    display: block;
    font-size: 20px;
    font-weight: 700;
    font-family: 'Poppins', sans-serif;
    margin-bottom: 20px;
}

.footer-social-icon a {
    color: #fff;
    font-size: 16px;
    margin-right: 15px;
}

.footer-social-icon i {
    height: 40px;
    width: 40px;
    text-align: center;
    line-height: 38px;
    border-radius: 50%;
}

.facebook-bg {
    background: #3B5998;
}

.twitter-bg {
    background: #55ACEE;
}

.google-bg {
    background: #DD4B39;
}

.instagram-bg {
    background: #e1306c;
}

.footer-widget-heading h3 {
    color: #fff;
    font-size: 20px;
    font-weight: 600;
    margin-bottom: 40px;
    position: relative;
}

.footer-widget-heading h3::before {
    content: "";
    position: absolute;
    left: 0;
    bottom: -15px;
    height: 2px;
    width: 50px;
    background: var(--primary-color);
}

.footer-widget ul li {
    display: inline-block;
    float: left;
    width: 50%;
    margin-bottom: 12px;
}

.footer-widget ul li a:hover {
    color: var(--primary-color);
}

.footer-widget ul li a {
    color: #878787;
    text-transform: capitalize;
    text-decoration: none;
    transition: .3s;
}

.subscribe-form {
    position: relative;
    overflow: hidden;
}

.subscribe-form input {
    width: 100%;
    padding: 14px 28px;
    background: #2E2E2E;
    border: 1px solid #2E2E2E;
    color: #fff;
}

.subscribe-form button {
    position: absolute;
    right: 0;
    background: var(--primary-color);
    padding: 13px 20px;
    border: 1px solid var(--primary-color);
    top: 0;
    color: #fff;
}

.subscribe-form button i {
    color: #fff;
    font-size: 22px;
    transform: rotate(-6deg);
}

.copyright-area {
    background: #202020;
    padding: 25px 0;
}

.copyright-text p {
    margin: 0;
    font-size: 14px;
    color: #878787;
}

.copyright-text p a {
    color: var(--primary-color);
    text-decoration: none;
}

.footer-menu li {
    display: inline-block;
    margin-left: 20px;
}

.footer-menu li:hover a {
    color: var(--primary-color);
}

.footer-menu li a {
    font-size: 14px;
    color: #878787;
    text-decoration: none;
}

/* Utils */
.mb-30 {
    margin-bottom: 30px;
}

.mb-50 {
    margin-bottom: 50px;
}


.hero-section::before {
    content: '';
    position: absolute;
    width: 500px;
    height: 500px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    top: -250px;
    right: -250px;
    animation: float 6s ease-in-out infinite;
}

.hero-section::after {
    content: '';
    position: absolute;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
    bottom: -150px;
    left: -150px;
    animation: float 8s ease-in-out infinite reverse;
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0px);
    }

    50% {
        transform: translateY(-20px);
    }
}

.hero-content {
    text-align: center;
    color: white;
    z-index: 1;
    max-width: 1200px;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    text-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    animation: fadeInUp 0.8s ease-out;
}

.hero-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    padding: 0.5rem 1.5rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
    animation: fadeInUp 1s ease-out;
}

.hero-description {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.95;
    animation: fadeInUp 1.2s ease-out;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   FEATURE CARDS (Circular)
   ============================================ */
.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
    padding: 0 2rem;
}

.feature-card {
    background: white;
    border-radius: 50%;
    width: 180px;
    height: 180px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    box-shadow: var(--shadow-lg);
    transition: all 0.3s ease;
    cursor: pointer;
    padding: 1.5rem;
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-10px) scale(1.05);
    box-shadow: var(--shadow-xl);
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 0.75rem;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.feature-title {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--dark);
    margin: 0;
    line-height: 1.3;
}

/* ============================================
   BUTTONS
   ============================================ */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-md);
    font-weight: 600;
    text-decoration: none;
    transition: all 0.3s ease;
    border: none;
    cursor: pointer;
    font-size: 1rem;
}

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

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.btn-outline {
    background: transparent;
    border: 2px solid white;
    color: white;
}

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

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

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

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

/* ============================================
   CARDS
   ============================================ */
.card {
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    transition: all 0.3s ease;
}

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

.card-header {
    border-bottom: 1px solid var(--gray-200);
    padding-bottom: 1rem;
    margin-bottom: 1rem;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--dark);
    margin: 0;
}

.card-body {
    padding: 0;
}

/* ============================================
   DASHBOARD
   ============================================ */
.dashboard-container {
    display: flex;
    min-height: 100vh;
}

.sidebar {
    width: 260px;
    background: var(--dark);
    color: white;
    padding: 1.5rem;
    position: fixed;
    height: 100vh;
    overflow-y: auto;
}

.sidebar-logo {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    color: white;
}

.sidebar-menu {
    list-style: none;
}

.sidebar-menu li {
    margin-bottom: 0.5rem;
}

.sidebar-menu a {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
}

.sidebar-menu a:hover,
.sidebar-menu a.active {
    background: rgba(255, 255, 255, 0.1);
    color: white;
}

.sidebar-menu i {
    margin-right: 0.75rem;
    font-size: 1.25rem;
}

.main-content {
    flex: 1;
    margin-left: 260px;
    padding: 2rem;
    background: var(--gray-100);
}

/* ============================================
   STATS CARDS
   ============================================ */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.stat-info h3 {
    font-size: 2rem;
    font-weight: 700;
    margin: 0;
    color: var(--dark);
}

.stat-info p {
    margin: 0;
    color: var(--gray-600);
    font-size: 0.875rem;
    margin-top: 0.25rem;
}

.stat-icon {
    font-size: 3rem;
    opacity: 0.2;
}

/* ============================================
   FORMS
   ============================================ */
.form-group {
    margin-bottom: 1.5rem;
}

.form-label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 600;
    color: var(--dark);
    font-size: 0.875rem;
}

.form-control {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--gray-300);
    border-radius: var(--radius-md);
    font-size: 1rem;
    background: white;
}

/* ============================================
   TABLES
   ============================================ */
.table-responsive {
    overflow-x: auto;
}

.table {
    width: 100%;
    background: white;
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.table thead {
    background: var(--gray-100);
}

.table th,
.table td {
    padding: 1rem;
    text-align: left;
    border-bottom: 1px solid var(--gray-200);
}

.table th {
    font-weight: 600;
    color: var(--dark);
    font-size: 0.875rem;
    text-transform: uppercase;
}

/* ============================================
   BADGES
   ============================================ */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

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

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

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

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

/* ============================================
   ALERTS
   ============================================ */
.alert {
    padding: 1rem 1.5rem;
    border-radius: var(--radius-md);
    margin-bottom: 1rem;
}

.alert-success {
    background: #d1fae5;
    color: #065f46;
    border-left: 4px solid var(--success);
}

.alert-error {
    background: #fee2e2;
    color: #991b1b;
    border-left: 4px solid var(--danger);
}

.alert-warning {
    background: #fef3c7;
    color: #92400e;
    border-left: 4px solid var(--warning);
}

/* ============================================
   ANIMATIONS
   ============================================ */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.slide-in-right {
    animation: slideInRight 0.5s ease-out;
}

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

    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2rem;
    }

    .features-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .feature-card {
        width: 140px;
        height: 140px;
    }

    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }

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

    .stats-grid {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center {
    text-align: center;
}

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

.mt-1 {
    margin-top: 0.5rem;
}

.mt-2 {
    margin-top: 1rem;
}

.mt-3 {
    margin-top: 1.5rem;
}

.mb-1 {
    margin-bottom: 0.5rem;
}

.mb-2 {
    margin-bottom: 1rem;
}

.mb-3 {
    margin-bottom: 1.5rem;
}

.p-1 {
    padding: 0.5rem;
}

.p-2 {
    padding: 1rem;
}

.p-3 {
    padding: 1.5rem;
}

.d-flex {
    display: flex;
}

.justify-between {
    justify-content: space-between;
}

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

.gap-1 {
    gap: 0.5rem;
}

/* ============================================
   STICKY NAVBAR
   ============================================ */
.navbar-dark {
    background: transparent;
    padding: 2rem 0;
    /* Increased padding */
    transition: all 0.4s ease;
    z-index: 9999 !important;
    /* Added z-index */
}

.navbar-scrolled {
    background: rgba(102, 126, 234, 0.95);
    backdrop-filter: blur(10px);
    padding: 1rem 0;
    /* Slightly increased padding */
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    z-index: 9999 !important;
}

.navbar-brand {
    font-weight: 700;
    letter-spacing: 0.5px;
}

.nav-link {
    font-weight: 500;
    position: relative;
    opacity: 0.85;
    transition: all 0.3s ease;
}

.nav-link:hover,
.nav-link.active {
    opacity: 1;
    color: white !important;
}

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: 0;
    left: 50%;
    background-color: white;
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 70%;
}

/* Mobile Navbar Background */
@media (max-width: 991px) {
    .navbar-collapse {
        background: rgba(102, 126, 234, 0.95);
        backdrop-filter: blur(10px);
        padding: 1rem;
        border-radius: 1rem;
        margin-top: 1rem;
        box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    }
}

/* ============================================
   COURSE CARDS (PREMIUM UI)
   ============================================ */
.course-card {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    border: 1px solid rgba(0, 0, 0, 0.05) !important;
}

.course-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04) !important;
}

.course-btn {
    transition: all 0.3s ease;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border: none;
}

.course-card:hover .course-btn {
    transform: scale(1.02);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3) !important;
}

.transition-all {
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}