/**
 * Main Stylesheet
 * Global styles and Bootstrap customizations
 * Author: Sarosh Baig
 */

/* 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(--light-bg);
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--dark);
}

h1 { font-size: clamp(2.5rem, 5vw, 3.5rem); }
h2 { font-size: clamp(2rem, 4vw, 2.75rem); }
h3 { font-size: clamp(1.5rem, 3vw, 2rem); }
h4 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h5 { font-size: clamp(1.125rem, 2vw, 1.25rem); }
h6 { font-size: clamp(1rem, 1.5vw, 1.125rem); }

p {
    margin-bottom: 1rem;
}

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

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

/* Improved Backdrop Blur */
.backdrop-blur {
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

/* Better Glass Effect */
.bg-white.bg-opacity-10 {
    background-color: rgba(255, 255, 255, 0.1) !important;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

/* Enhanced Shadow for Cards */
.card {
    transition: all var(--transition-normal);
}

.card.border-0 {
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
}

.card.border-0:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.12);
    transform: translateY(-4px);
}

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

code, pre {
    font-family: var(--font-mono);
}

/* Navbar Customization */
.navbar {
    backdrop-filter: blur(20px);
    background-color: rgba(15, 23, 42, 0.98) !important;
    padding: 1rem 0;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.15);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.navbar-brand {
    font-size: 1.5rem;
    font-weight: 700;
    color: white !important;
    transition: all var(--transition-fast);
}

.navbar-brand:hover {
    transform: translateY(-2px);
}

.brand-name {
    font-size: 1.5rem;
    line-height: 1;
    color: white;
}

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

.brand-tagline {
    font-size: 0.75rem;
    line-height: 1;
    color: var(--gray-400);
}

.nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    border-radius: var(--radius-md);
    transition: all var(--transition-base);
    color: rgba(255, 255, 255, 0.85) !important;
}

.nav-link:hover {
    background-color: rgba(59, 130, 246, 0.15);
    color: var(--primary-light) !important;
    transform: translateY(-2px);
}

.nav-link.active {
    color: white !important;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(139, 92, 246, 0.2));
    box-shadow: inset 0 0 0 1px rgba(59, 130, 246, 0.3);
}

.dropdown-menu-dark {
    background-color: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: var(--shadow-2xl);
    border-radius: var(--radius-lg);
    padding: 0.5rem;
}

.dropdown-item {
    transition: all var(--transition-fast);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    color: rgba(255, 255, 255, 0.85) !important;
}

.dropdown-item:hover {
    background-color: rgba(59, 130, 246, 0.15);
    color: var(--primary-light) !important;
    transform: translateX(5px);
}

.dropdown-item.fw-bold {
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.2), rgba(139, 92, 246, 0.2));
    border: 1px solid rgba(59, 130, 246, 0.3);
    margin-top: 0.5rem;
}

.dropdown-divider {
    border-color: rgba(255, 255, 255, 0.1);
    margin: 0.5rem 0;
}

/* Buttons */
.btn {
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    border: none;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
    width: 300px;
    height: 300px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
    color: white;
    position: relative;
    z-index: 1;
}

.btn-primary:hover {
    background: linear-gradient(135deg, var(--primary-dark), var(--secondary-dark));
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.5);
    transform: translateY(-3px);
}

.btn-primary:active {
    transform: translateY(-1px);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
}

.btn-outline-primary {
    border: 2px solid var(--primary);
    color: var(--primary);
    background: transparent;
}

.btn-outline-primary:hover {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.4);
    transform: translateY(-2px);
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* Cards */
.card {
    border: none;
    border-radius: var(--radius-xl);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
    transition: all var(--transition-base);
    overflow: hidden;
    background: white;
}

.card:hover {
    box-shadow: 0 12px 28px rgba(0, 0, 0, 0.12);
    transform: translateY(-6px);
}

.card-header {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    border: none;
    font-weight: 600;
    padding: 1.25rem 1.5rem;
    border-bottom: none;
}

.card-header h5, .card-header h6 {
    color: white;
    margin-bottom: 0;
}

.card-footer {
    background-color: var(--gray-50);
    border-top: 1px solid var(--gray-200);
}

/* Hover Effects for Cards */
.card.h-100 {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.card.h-100 .card-body {
    flex: 1;
}

/* Badges */
.badge {
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

.badge.px-3 {
    padding-left: 1rem !important;
    padding-right: 1rem !important;
}

.badge.py-2 {
    padding-top: 0.6rem !important;
    padding-bottom: 0.6rem !important;
}

.badge.fs-6 {
    font-size: 0.95rem !important;
}

/* Enhanced badge backgrounds */
.badge.bg-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%) !important;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.25);
}

.badge.bg-success {
    background: linear-gradient(135deg, #10B981 0%, #059669 100%) !important;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.25);
}

.badge.bg-warning {
    background: linear-gradient(135deg, #F59E0B 0%, #D97706 100%) !important;
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.25);
    color: #FFFFFF !important;
}

.badge.bg-danger {
    background: linear-gradient(135deg, #EF4444 0%, #DC2626 100%) !important;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.25);
}

.badge.bg-light {
    background-color: #F3F4F6 !important;
    color: #374151 !important;
    border: 1px solid #E5E7EB !important;
    box-shadow: none !important;
}

.badge.bg-white {
    background-color: #FFFFFF !important;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.08);
}

/* Utilities */
.hover-primary:hover {
    color: var(--primary) !important;
}

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

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

.bg-gradient-dark {
    background: linear-gradient(135deg, var(--dark-bg), var(--dark));
}

/* Hero Section - Enhanced */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 50%, #334155 100%);
    position: relative;
    overflow: hidden;
    padding: 8rem 0 4rem;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(59, 130, 246, 0.15) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(139, 92, 246, 0.15) 0%, transparent 50%);
    pointer-events: none;
}

.hero-content {
    position: relative;
    z-index: 2;
}

.hero h1 {
    color: #FFFFFF;
    text-shadow: var(--text-shadow-lg);
    font-weight: 800;
    letter-spacing: -0.02em;
}

.hero .lead {
    color: #E2E8F0;
    text-shadow: var(--text-shadow-sm);
    font-size: 1.25rem;
    font-weight: 400;
    line-height: 1.8;
}

.hero .text-light {
    color: #F1F5F9 !important;
    text-shadow: var(--text-shadow-sm);
}

.hero .text-primary {
    color: #60A5FA !important;
}

.hero .badge {
    background: rgba(59, 130, 246, 0.2) !important;
    border: 1px solid rgba(59, 130, 246, 0.3);
    color: #93C5FD;
    font-weight: 600;
    padding: 0.6rem 1.2rem;
    font-size: 0.9rem;
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.2);
}

/* Page Headers / Breadcrumb Sections */
.bg-gradient-primary {
    background: linear-gradient(135deg, #1E40AF 0%, #7C3AED 100%) !important;
    position: relative;
    overflow: hidden;
}

.bg-gradient-primary::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        radial-gradient(circle at 20% 50%, rgba(255, 255, 255, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
    pointer-events: none;
}

.bg-gradient-primary h1,
.bg-gradient-primary h2,
.bg-gradient-primary h3,
.bg-gradient-primary h4,
.bg-gradient-primary h5,
.bg-gradient-primary h6 {
    color: #FFFFFF !important;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.bg-gradient-primary .lead,
.bg-gradient-primary p {
    color: #E2E8F0 !important;
    text-shadow: 0 1px 4px rgba(0, 0, 0, 0.2);
}

.bg-gradient-primary .badge {
    background: rgba(255, 255, 255, 0.15) !important;
    color: white !important;
    border: 1px solid rgba(255, 255, 255, 0.25);
    backdrop-filter: blur(10px);
}

/* Section Spacing */
.section {
    padding: 5rem 0;
}

.section-sm {
    padding: 3rem 0;
}

.section-lg {
    padding: 7rem 0;
}

/* Hero Section - Removed duplicate, using enhanced version above */

/* Animated Background */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.float-animation {
    animation: float 6s ease-in-out infinite;
}

/* Breadcrumb Enhancement */
.breadcrumb {
    background: transparent;
    padding: 0;
    margin-bottom: 1rem;
}

.breadcrumb-item + .breadcrumb-item::before {
    color: rgba(255, 255, 255, 0.6);
}

.breadcrumb-item a {
    color: rgba(255, 255, 255, 0.9);
    text-decoration: none;
    transition: all var(--transition-fast);
}

.breadcrumb-item a:hover {
    color: #FFFFFF;
    text-shadow: 0 0 8px rgba(59, 130, 246, 0.5);
}

.breadcrumb-item.active {
    color: rgba(255, 255, 255, 0.7);
}

/* Enhanced Card Styling */
.card {
    border: 1px solid var(--gray-200);
    background: white;
}

.card-header {
    padding: 1.25rem 1.5rem;
}

.card-body {
    padding: 1.5rem;
}

.shadow-hover {
    transition: all var(--transition-base);
}

.shadow-hover:hover {
    box-shadow: var(--shadow-2xl) !important;
    transform: translateY(-8px);
}

/* Button Enhancements */
.btn-outline-light {
    border: 2px solid rgba(255, 255, 255, 0.8);
    color: white;
    background: transparent;
    font-weight: 600;
}

.btn-outline-light:hover {
    background: white;
    color: var(--primary);
    border-color: white;
    box-shadow: 0 8px 24px rgba(255, 255, 255, 0.2);
}

.btn-outline-secondary {
    border: 2px solid var(--gray-400);
}

.btn-outline-secondary:hover {
    background: var(--gray-600);
    border-color: var(--gray-600);
    color: white;
}

/* Sticky Elements */
.sticky-top {
    position: sticky;
    top: 80px;
    z-index: var(--z-sticky);
}

/* List Group Enhancements */
.list-group-item {
    border-color: var(--gray-200);
}

.list-group-item.active {
    background-color: var(--primary);
    border-color: var(--primary);
    color: white;
    font-weight: 600;
}

.list-group-item-action {
    transition: all var(--transition-fast);
}

.list-group-item-action:hover {
    background-color: var(--gray-50);
    transform: translateX(5px);
}

/* Alert Enhancements */
.alert {
    border: none;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.alert-info {
    background: linear-gradient(135deg, rgba(6, 182, 212, 0.1), rgba(6, 182, 212, 0.05));
    border-left: 4px solid var(--info);
    color: var(--gray-800);
}

/* Badge Enhancements */
.badge.bg-light {
    background-color: var(--gray-100) !important;
    color: var(--gray-700) !important;
    border: 1px solid var(--gray-300);
}

.badge.bg-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light)) !important;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.3);
}

.badge.bg-success {
    background: linear-gradient(135deg, var(--success), #34D399) !important;
    box-shadow: 0 2px 8px rgba(16, 185, 129, 0.3);
}

.badge.bg-warning {
    background: linear-gradient(135deg, var(--warning), #FBBF24) !important;
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.3);
}

.badge.bg-danger {
    background: linear-gradient(135deg, var(--danger), #F87171) !important;
    box-shadow: 0 2px 8px rgba(239, 68, 68, 0.3);
}

/* Module Color Badges */
.badge.bg-secondary {
    background: linear-gradient(135deg, var(--secondary), #A78BFA) !important;
    box-shadow: 0 2px 8px rgba(139, 92, 246, 0.3);
}

/* Accordion Enhancements */
.accordion-button {
    font-weight: 600;
    color: var(--gray-800);
}

.accordion-button:not(.collapsed) {
    background-color: var(--gray-50);
    color: var(--primary);
    box-shadow: none;
}

.accordion-button:focus {
    box-shadow: 0 0 0 0.25rem rgba(59, 130, 246, 0.25);
}

/* Form Enhancements */
.form-control, .form-select {
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-md);
    padding: 0.75rem 1rem;
    transition: all var(--transition-fast);
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.25rem rgba(59, 130, 246, 0.15);
}

.form-label {
    color: var(--gray-700);
    margin-bottom: 0.5rem;
}

/* Loading States */
.skeleton {
    background: linear-gradient(90deg, var(--gray-200) 25%, var(--gray-100) 50%, var(--gray-200) 75%);
    background-size: 200% 100%;
    animation: loading 1.5rem ease-in-out infinite;
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Responsive */
@media (max-width: 768px) {
    .section {
        padding: 3rem 0;
    }
    
    .navbar-brand {
        font-size: 1.25rem;
    }
    
    .brand-tagline {
        font-size: 0.65rem;
    }
    
    .hero {
        min-height: auto;
        padding: 6rem 0 3rem;
    }
    
    .hero h1 {
        font-size: 2rem !important;
    }
    
    .hero .lead {
        font-size: 1rem;
    }
    
    .btn-lg {
        padding: 0.75rem 1.5rem;
        font-size: 1rem;
    }
}

@media (max-width: 576px) {
    .hero h1 {
        font-size: 1.75rem !important;
    }
    
    .display-3 {
        font-size: 2rem !important;
    }
    
    .display-4 {
        font-size: 1.75rem !important;
    }
    
    .display-5 {
        font-size: 1.5rem !important;
    }
}

/* Improved Text Contrast */
.bg-dark .text-muted {
    color: #94A3B8 !important;
}

.bg-dark h1, .bg-dark h2, .bg-dark h3, .bg-dark h4, .bg-dark h5, .bg-dark h6 {
    color: #FFFFFF !important;
}

.bg-light .text-muted {
    color: #64748B !important;
}

/* Footer Enhancements */
footer {
    background: linear-gradient(135deg, #0F172A 0%, #1E293B 100%) !important;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
}

footer .text-muted {
    color: #94A3B8 !important;
}

footer .hover-primary:hover {
    color: var(--primary-light) !important;
}

footer a {
    transition: all var(--transition-fast);
}

footer a:hover {
    transform: translateX(5px);
}

footer .badge {
    font-size: 0.75rem;
    padding: 0.4rem 0.8rem;
}

/* Utility Classes */
.text-shadow-sm {
    text-shadow: var(--text-shadow-sm);
}

.text-shadow-md {
    text-shadow: var(--text-shadow-md);
}

.text-shadow-lg {
    text-shadow: var(--text-shadow-lg);
}

.bg-blur {
    backdrop-filter: blur(10px);
    background-color: rgba(255, 255, 255, 0.9);
}

.bg-blur-dark {
    backdrop-filter: blur(10px);
    background-color: rgba(15, 23, 42, 0.9);
}

.border-gradient {
    border: 2px solid;
    border-image: linear-gradient(135deg, var(--primary), var(--secondary)) 1;
}

.hover-lift {
    transition: transform var(--transition-base);
}

.hover-lift:hover {
    transform: translateY(-5px);
}

.hover-glow {
    transition: all var(--transition-base);
}

.hover-glow:hover {
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.4);
}

/* Gradient Text */
.text-gradient-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-light));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-gradient-secondary {
    background: linear-gradient(135deg, var(--secondary), #A78BFA);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Enhanced Visual Effects */
.glass-effect {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.15);
}

.pulse {
    animation: pulse 2s cubic-bezier(0.4, 0, 0.6, 1) infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.7;
    }
}

/* Selection Color */
::selection {
    background-color: var(--primary);
    color: white;
}

::-moz-selection {
    background-color: var(--primary);
    color: white;
}

/* Print Styles */
@media print {
    .navbar, .footer, .btn, .badge {
        display: none !important;
    }
}