/**
 * Modern Minimal Theme - Complete CSS
 * White/Cream Design System with Advanced UI/UX
 */

/* Typography Hierarchy */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
    color: var(--color-text-primary);
    margin-bottom: var(--space-md);
}

h1 { font-size: 3rem; letter-spacing: -0.02em; }
h2 { font-size: 2.25rem; letter-spacing: -0.01em; }
h3 { font-size: 1.875rem; }
h4 { font-size: 1.5rem; }
h5 { font-size: 1.25rem; }
h6 { font-size: 1.125rem; }

p {
    margin-bottom: var(--space-md);
    color: var(--color-text-secondary);
}

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

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

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 0.9375rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.btn-primary {
    background: var(--color-accent);
    color: var(--color-white);
    box-shadow: 0 1px 3px var(--color-shadow);
}

.btn-primary:hover {
    background: var(--color-accent-dark);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--color-shadow-medium);
}

.btn-secondary {
    background: var(--color-white);
    color: var(--color-text-primary);
    border: 1px solid var(--color-border);
}

.btn-secondary:hover {
    background: var(--color-cream-light);
    border-color: var(--color-accent);
}

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

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

.btn-large {
    padding: 1rem 2rem;
    font-size: 1.0625rem;
}

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

/* Cards */
.card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    transition: all var(--transition-base);
    box-shadow: 0 1px 3px var(--color-shadow);
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px var(--color-shadow-medium);
    border-color: var(--color-accent-light);
}

.card-icon {
    width: 3rem;
    height: 3rem;
    background: var(--color-accent-subtle);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    margin-bottom: var(--space-lg);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--space-sm);
    color: var(--color-text-primary);
}

.card-description {
    color: var(--color-text-secondary);
    font-size: 0.9375rem;
    line-height: 1.6;
}

/* Grid System */
.grid {
    display: grid;
    gap: var(--space-xl);
}

.grid-cols-1 { grid-template-columns: 1fr; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }

/* Hero Enhancements */
.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--space-xl);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: var(--space-lg);
    background: linear-gradient(135deg, var(--color-text-primary) 0%, var(--color-accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-description {
    font-size: 1.25rem;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2xl);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--space-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Stats Section */
.stats-section {
    padding: var(--space-3xl) 0;
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    margin: var(--space-3xl) 0;
    border: 1px solid var(--color-border-light);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-xl);
}

.stat-card {
    text-align: center;
    padding: var(--space-xl);
    background: var(--color-cream-light);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.stat-card:hover {
    transform: translateY(-4px);
    background: var(--color-accent-subtle);
}

.stat-value {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
    font-family: var(--font-display);
}

.stat-label {
    font-size: 0.9375rem;
    color: var(--color-text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Features Section */
.features-section {
    padding: var(--space-3xl) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--space-2xl);
    margin-top: var(--space-2xl);
}

.feature-card {
    background: var(--color-white);
    padding: var(--space-2xl);
    border-radius: var(--radius-xl);
    border: 1px solid var(--color-border);
    transition: all var(--transition-base);
}

.feature-card:hover {
    border-color: var(--color-accent);
    box-shadow: 0 8px 24px var(--color-shadow-medium);
}

/* Community Section */
.community-section {
    background: var(--color-white);
    border-radius: var(--radius-2xl);
    padding: var(--space-3xl);
    margin: var(--space-3xl) 0;
    border: 1px solid var(--color-border-light);
}

.community-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-2xl);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--color-border-light);
}

.community-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.community-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--space-lg);
}

.member-card {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: var(--color-cream-light);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border-light);
    transition: all var(--transition-base);
}

.member-card:hover {
    background: var(--color-white);
    border-color: var(--color-accent);
    transform: translateX(4px);
}

.member-avatar {
    width: 3rem;
    height: 3rem;
    border-radius: var(--radius-full);
    background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-white);
    font-weight: 700;
    font-size: 1.125rem;
}

.member-info {
    flex: 1;
}

.member-name {
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: 0.25rem;
    font-size: 0.9375rem;
}

.member-role {
    color: var(--color-text-tertiary);
    font-size: 0.875rem;
}

/* Course Cards */
.course-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    transition: all var(--transition-base);
}

.course-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 12px 32px var(--color-shadow-medium);
    border-color: var(--color-accent);
}

.course-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--space-lg);
}

.course-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: 0.25rem;
}

.course-instructor {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
}

.course-duration {
    background: var(--color-accent-subtle);
    color: var(--color-accent);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
}

/* Progress Bar */
.progress-bar {
    height: 0.5rem;
    background: var(--color-border-light);
    border-radius: var(--radius-full);
    overflow: hidden;
    margin: var(--space-md) 0;
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--color-accent) 0%, var(--color-accent-light) 100%);
    border-radius: var(--radius-full);
    transition: width var(--transition-slow);
}

/* Achievement Cards */
.achievement-card {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    transition: all var(--transition-base);
}

.achievement-card.unlocked {
    border-color: var(--color-success);
    background: var(--color-success-light);
}

.achievement-card.locked {
    opacity: 0.6;
}

.achievement-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px var(--color-shadow-medium);
}

.achievement-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-md);
    filter: grayscale(0);
    transition: filter var(--transition-base);
}

.achievement-card.locked .achievement-icon {
    filter: grayscale(1);
}

.achievement-title {
    font-weight: 600;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
}

.achievement-status {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.achievement-status.unlocked {
    color: var(--color-success);
}

.achievement-status.locked {
    color: var(--color-text-tertiary);
}

/* Filter Tabs */
.filter-tabs {
    display: flex;
    gap: var(--space-sm);
    padding: var(--space-lg) 0;
    border-bottom: 1px solid var(--color-border-light);
    margin-bottom: var(--space-xl);
    overflow-x: auto;
}

.filter-tab {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: none;
    border-radius: var(--radius-lg);
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.filter-tab:hover {
    background: var(--color-cream-light);
    color: var(--color-text-primary);
}

.filter-tab.active {
    background: var(--color-accent);
    color: var(--color-white);
}

/* Weekly Schedule */
.weekly-schedule {
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    margin: var(--space-2xl) 0;
}

.schedule-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-xl);
}

.schedule-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text-primary);
}

.schedule-nav {
    display: flex;
    gap: var(--space-sm);
}

.schedule-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--space-md);
}

.day-card {
    background: var(--color-cream-light);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    padding: var(--space-lg);
    text-align: center;
    min-height: 120px;
    transition: all var(--transition-base);
}

.day-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

.day-name {
    font-weight: 700;
    color: var(--color-text-primary);
    margin-bottom: var(--space-sm);
    font-size: 0.9375rem;
}

.day-content {
    font-size: 0.875rem;
    color: var(--color-text-tertiary);
}

.day-content.has-class {
    color: var(--color-success);
    font-weight: 600;
}

/* Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-sm { margin-bottom: var(--space-sm); }
.mb-md { margin-bottom: var(--space-md); }
.mb-lg { margin-bottom: var(--space-lg); }
.mb-xl { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }

.mt-0 { margin-top: 0; }
.mt-sm { margin-top: var(--space-sm); }
.mt-md { margin-top: var(--space-md); }
.mt-lg { margin-top: var(--space-lg); }
.mt-xl { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.6s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

.slide-in {
    animation: slideIn 0.4s ease-out;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .grid-cols-4 {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .grid-cols-3 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--space-md);
    }
    
    .header-content {
        flex-direction: column;
        gap: var(--space-md);
    }
    
    .nav-menu {
        flex-direction: column;
        gap: var(--space-sm);
        width: 100%;
        text-align: center;
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1.125rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .grid-cols-2,
    .grid-cols-3,
    .grid-cols-4 {
        grid-template-columns: 1fr;
    }
    
    .schedule-grid {
        grid-template-columns: 1fr;
    }
    
    .community-header {
        flex-direction: column;
        gap: var(--space-md);
        text-align: center;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 1.75rem;
    }
    
    .stat-value {
        font-size: 2rem;
    }
}