/**
 * Modern Innovative Design Styles
 *
 * @package Coursee
 * @since 1.0.0
 */

/* ============================================
   MODERN COLOR SCHEME & VARIABLES
   ============================================ */
:root {
    --primary-color: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary-color: #ec4899;
    --accent-color: #f59e0b;
    --success-color: #10b981;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.2);
    --border-radius: 16px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   MODERN HEADER DESIGN
   ============================================ */
.site-header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    box-shadow: var(--shadow-md);
    border-bottom: 1px solid rgba(99, 102, 241, 0.1);
    padding: 1.25rem 0;
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.site-header.scrolled {
    padding: 0.75rem 0;
    box-shadow: var(--shadow-lg);
}

.site-branding {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.site-title {
    margin: 0;
    font-size: 1.75rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

.site-title a {
    text-decoration: none;
    transition: var(--transition);
}

.site-title a:hover {
    transform: scale(1.05);
}

/* ============================================
   MODERN NAVIGATION
   ============================================ */
.main-navigation ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    gap: 0.5rem;
    align-items: center;
}

.main-navigation li {
    position: relative;
}

.main-navigation a {
    text-decoration: none;
    color: #1f2937;
    font-weight: 600;
    font-size: 15px;
    padding: 0.75rem 1.25rem;
    border-radius: 12px;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    display: inline-flex;
    align-items: center;
}

.main-navigation a::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transform: scale(0.9);
    transform-origin: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: -1;
    border-radius: 12px;
}

.main-navigation a::after {
    content: '';
    position: absolute;
    bottom: 0.5rem;
    left: 50%;
    width: 0;
    height: 3px;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 2px;
    transform: translateX(-50%);
    transition: width 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.main-navigation a:hover {
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.3);
}

.main-navigation a:hover::before {
    opacity: 1;
    transform: scale(1);
}

.main-navigation a:hover::after {
    width: calc(100% - 2rem);
}

.main-navigation .current-menu-item a,
.main-navigation .current_page_item a {
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: var(--shadow-md);
}

/* ============================================
   MODERN HERO SECTION
   ============================================ */
.hero-section {
    position: relative;
    padding: 8rem 0 6rem;
    background: var(--gradient-primary);
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
    animation: rotate 20s linear infinite;
}

@keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: #fff;
}

.hero-title {
    font-size: 4rem;
    font-weight: 900;
    margin-bottom: 1.5rem;
    line-height: 1.1;
    animation: fadeInUp 0.8s ease-out;
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    opacity: 0.95;
    animation: fadeInUp 0.8s ease-out 0.2s both;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   MODERN COURSE CARDS
   ============================================ */
.coursee-courses-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin: 2rem 0;
}

@media (min-width: 768px) {
    .coursee-courses-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.875rem;
    }
}

@media (min-width: 1024px) {
    .coursee-courses-grid {
        grid-template-columns: repeat(4, 1fr);
        gap: 1rem;
    }
}

@media (min-width: 1400px) {
    .coursee-courses-grid {
        grid-template-columns: repeat(6, 1fr);
        gap: 1rem;
    }
}

/* Override for horizontal scroll wrapper only */
.coursee-courses-grid-wrapper.horizontal-scroll .coursee-courses-grid {
    display: flex;
    flex-direction: row;
    gap: 1rem;
    overflow-x: auto;
    overflow-y: hidden;
    scroll-behavior: smooth;
    -webkit-overflow-scrolling: touch;
    padding: 0.5rem 0;
    margin: 0 -1rem;
    padding-left: 1rem;
    padding-right: 1rem;
    scrollbar-width: thin;
    scrollbar-color: #000000 #f3f4f6;
}

.coursee-courses-grid-wrapper.horizontal-scroll .coursee-courses-grid::-webkit-scrollbar {
    height: 8px;
}

.coursee-courses-grid-wrapper.horizontal-scroll .coursee-courses-grid::-webkit-scrollbar-track {
    background: #f3f4f6;
    border-radius: 4px;
}

.coursee-courses-grid-wrapper.horizontal-scroll .coursee-courses-grid::-webkit-scrollbar-thumb {
    background: #000000;
    border-radius: 4px;
}

.coursee-courses-grid-wrapper.horizontal-scroll .coursee-courses-grid::-webkit-scrollbar-thumb:hover {
    background: #333333;
}

.course-item {
    background: #fff;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
    position: relative;
    border: 1px solid rgba(99, 102, 241, 0.1);
}

/* Don't apply modern styles to Udemy style cards */
.course-item.udemy-style {
    background: transparent !important;
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    overflow: visible !important;
}

.course-item.udemy-style::before {
    display: none !important;
}

.course-item.udemy-style:hover {
    transform: none !important;
    box-shadow: none !important;
}

.course-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
    z-index: 0;
}

.course-item:hover {
    transform: translateY(-12px) scale(1.02);
    box-shadow: var(--shadow-xl);
}

.course-item:hover::before {
    opacity: 0.03;
}

.course-thumbnail {
    position: relative;
    overflow: hidden;
    height: 220px;
    background: var(--gradient-accent);
}

.course-item.udemy-style .course-thumbnail {
    height: 135px !important;
    background: #f3f4f6 !important;
    border-radius: 0 !important;
}

.course-thumbnail img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.course-item:hover .course-thumbnail img {
    transform: scale(1.15);
}

.course-item.udemy-style:hover .course-thumbnail img {
    transform: scale(1.05) !important;
}

.course-thumbnail::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.3) 100%);
    opacity: 0;
    transition: var(--transition);
}

.course-item:hover .course-thumbnail::after {
    opacity: 1;
}

.course-item.udemy-style .course-thumbnail::after {
    display: none !important;
}

.course-content {
    padding: 1.75rem;
    position: relative;
    z-index: 1;
}

.course-item.udemy-style .course-content {
    padding: 0 !important;
}

.course-content h3 {
    margin: 0 0 1rem 0;
    font-size: 1.5rem;
    font-weight: 700;
    line-height: 1.3;
}

.course-item.udemy-style .course-content h3 {
    margin: 0 !important;
    font-size: 0.875rem !important;
}

.course-content h3 a {
    text-decoration: none;
    color: #1f2937;
    transition: var(--transition);
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.course-item.udemy-style .course-content h3 a {
    color: #000000 !important;
    background: none !important;
    -webkit-background-clip: unset !important;
    -webkit-text-fill-color: #000000 !important;
    background-clip: unset !important;
}

.course-content h3 a:hover {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.course-item.udemy-style .course-content h3 a:hover {
    color: #5624d0 !important;
    text-decoration: underline !important;
    background: none !important;
    -webkit-background-clip: unset !important;
    -webkit-text-fill-color: #5624d0 !important;
    background-clip: unset !important;
}

.course-excerpt {
    color: #6b7280;
    font-size: 0.95rem;
    line-height: 1.6;
    margin-bottom: 1.25rem;
}

.course-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid #e5e7eb;
}

.course-item.udemy-style .course-meta {
    border-top: none !important;
    padding-top: 0 !important;
}

.course-price {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.course-item.udemy-style .course-price,
.course-item.udemy-style .price-current,
.course-item.udemy-style .price-free {
    font-size: 1rem !important;
    font-weight: 700 !important;
    color: #000000 !important;
    background: none !important;
    -webkit-background-clip: unset !important;
    -webkit-text-fill-color: #000000 !important;
    background-clip: unset !important;
}

.course-price.free {
    background: linear-gradient(135deg, var(--success-color), #34d399);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ============================================
   MODERN DASHBOARD CARDS
   ============================================ */
.dashboard-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 3rem;
}

.stat-item {
    background: #fff;
    border-radius: var(--border-radius);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid rgba(99, 102, 241, 0.1);
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.stat-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-primary);
    transform: scaleY(0);
    transition: var(--transition);
}

.stat-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
}

.stat-item:hover::before {
    transform: scaleY(1);
}

.stat-item h3 {
    margin: 0 0 0.75rem 0;
    font-size: 0.875rem;
    font-weight: 600;
    color: #6b7280;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-number {
    margin: 0;
    font-size: 2.5rem;
    font-weight: 900;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1;
}

/* ============================================
   MODERN BUTTONS
   ============================================ */
.button,
button[type="submit"],
input[type="submit"] {
    display: inline-block;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    background: var(--gradient-primary);
    color: #fff;
    box-shadow: var(--shadow-md);
}

.button::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;
}

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

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

.button-primary {
    background: var(--gradient-primary);
}

.button-secondary {
    background: var(--gradient-secondary);
}

/* ============================================
   MODERN PROGRESS BARS
   ============================================ */
.progress-bar {
    background: #e5e7eb;
    height: 10px;
    border-radius: 10px;
    overflow: hidden;
    position: relative;
    margin-bottom: 0.5rem;
}

.progress-fill {
    background: var(--gradient-primary);
    height: 100%;
    border-radius: 10px;
    transition: width 1s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
}

.progress-fill::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: linear-gradient(
        90deg,
        transparent,
        rgba(255, 255, 255, 0.3),
        transparent
    );
    animation: shimmer 2s infinite;
}

@keyframes shimmer {
    0% { transform: translateX(-100%); }
    100% { transform: translateX(100%); }
}

/* ============================================
   GLASSMORPHISM EFFECTS
   ============================================ */
.glass-card {
    background: rgba(255, 255, 255, 0.7);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    box-shadow: var(--shadow-lg);
}

/* ============================================
   MODERN FORMS
   ============================================ */
.form-control {
    width: 100%;
    padding: 1rem 1.25rem;
    border: 2px solid #e5e7eb;
    border-radius: 12px;
    font-size: 1rem;
    transition: var(--transition);
    background: #fff;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
    transform: translateY(-2px);
}

/* ============================================
   ANIMATIONS & TRANSITIONS
   ============================================ */
@keyframes float {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

.floating {
    animation: float 3s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.pulsing {
    animation: pulse 2s ease-in-out infinite;
}

/* ============================================
   MODERN FOOTER
   ============================================ */
.site-footer {
    background: linear-gradient(135deg, #1f2937 0%, #111827 100%);
    color: #fff;
    padding: 4rem 0 2rem;
    margin-top: 6rem;
    position: relative;
    overflow: hidden;
}

.site-footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 1px;
    background: var(--gradient-primary);
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .coursee-courses-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .dashboard-stats {
        grid-template-columns: 1fr;
    }
    
    .main-navigation ul {
        flex-direction: column;
        gap: 0.25rem;
    }
}

/* ============================================
   SCROLL ANIMATIONS
   ============================================ */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}

/* ============================================
   MODERN BADGES & TAGS
   ============================================ */
.badge {
    display: inline-block;
    padding: 0.375rem 0.875rem;
    font-size: 0.75rem;
    font-weight: 700;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.badge-primary {
    background: var(--gradient-primary);
    color: #fff;
}

.badge-success {
    background: linear-gradient(135deg, var(--success-color), #34d399);
    color: #fff;
}

.badge-warning {
    background: linear-gradient(135deg, var(--accent-color), #fbbf24);
    color: #fff;
}