/* === GRADE PAGE STYLES === */

.floating-nav .navbar-brand {
    font-weight: var(--font-weight-bold);
    color: var(--primary);
}

/* Grade Header */
.grade-header {
    padding: 120px 0 var(--space-4xl);
    margin-top: 60px;
    background: var(--gradient-bg);
    position: relative;
    overflow: hidden;
}

.grade-header h1 {
    color: var(--primary);
    font-weight: var(--font-weight-bold);
    margin-bottom: var(--space-base);
    position: relative;
    display: inline-block;
}

.grade-header h1::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--gradient-primary);
    border-radius: var(--radius-xs);
}

.grade-header .lead {
    color: var(--text-primary);
    max-width: 800px;
    margin: var(--space-xl) auto 0;
    font-size: var(--font-size-xl);
}

/* Grade Hero Section */
.grade-hero {
    padding: 120px 0 80px;
    margin-top: 60px;
    background: var(--gradient-bg);
    position: relative;
    overflow: hidden;
}

.hero-shapes {
    position: absolute;
    inset: 0;
    overflow: hidden;
    z-index: 0;
}

.shape {
    position: absolute;
    background: var(--gradient-primary);
    border-radius: var(--radius-circle);
    filter: blur(50px);
    opacity: 0.1;
    animation: floatAnimation 8s infinite ease-in-out;
}

.shape-1 {
    width: 300px;
    height: 300px;
    top: -100px;
    right: -100px;
}

.shape-2 {
    width: 200px;
    height: 200px;
    bottom: -50px;
    left: -50px;
    animation-delay: 2s;
}

.shape-3 {
    width: 150px;
    height: 150px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 4s;
}

@keyframes floatAnimation {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-20px); }
}

.grade-title {
    padding: var(--space-xl);
    font-size: var(--font-size-5xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-xl);
    text-align: center;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    position: relative;
    display: block;
    text-shadow: 0 0 20px rgba(var(--primary-rgb), 0.3);
    white-space: nowrap;
}

.grade-subtitle {
    color: var(--text-secondary);
    text-align: center;
    margin-bottom: var(--space-4xl);
    font-size: var(--font-size-xl);
}

/* Cards Section */
.cards-section {
    padding: 60px 0;
    position: relative;
    overflow: hidden;
}

.section-title {
    font-size: var(--font-size-3xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
    margin-bottom: var(--space-2xl);
    text-align: center;
}

.card-grid {
    display: grid;
    gap: var(--space-2xl);
    margin-bottom: var(--space-5xl);
}

.grade1-grid {
    grid-template-columns: repeat(3, 1fr);
}

.grade2-grid {
    grid-template-columns: repeat(4, 1fr);
}

.grade3-grid {
    grid-template-columns: repeat(2, 1fr);
}

/* Subject Cards */
.subject-card {
    background: var(--card-bg);
    border-radius: var(--radius-3xl);
    padding: var(--space-2xl);
    position: relative;
    overflow: hidden;
    transition: var(--transition-all);
    border: 1px solid rgba(var(--primary-rgb), 0.1);
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    cursor: pointer;
}

.subject-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-bg);
    opacity: 0;
    transition: var(--transition-base);
}

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

.subject-card:hover::before {
    opacity: 1;
}

.card-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: var(--radius-3xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-xl);
    position: relative;
    transform: rotate(45deg);
    transition: var(--transition-transform);
}

.subject-card:hover .card-icon {
    transform: rotate(0deg);
}

.card-icon i {
    color: white;
    font-size: var(--font-size-3xl);
    transform: rotate(-45deg);
    transition: var(--transition-transform);
}

.subject-card:hover .card-icon i {
    transform: rotate(0deg);
}

.card-title {
    font-size: var(--font-size-2xl);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    margin-bottom: var(--space-base);
    position: relative;
}

.card-description {
    color: var(--text-secondary);
    font-size: var(--font-size-base);
    margin-bottom: var(--space-xl);
    position: relative;
}

.card-button {
    background: var(--gradient-primary);
    color: white;
    border: none;
    border-radius: var(--radius-full);
    padding: var(--space-sm) var(--space-2xl);
    font-weight: var(--font-weight-semibold);
    transition: var(--transition-all);
    position: relative;
    overflow: hidden;
    text-decoration: none;
}

.card-button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
    color: white;
}

/* Lesson Cards */
.lesson-card {
    background: var(--card-bg);
    border-radius: var(--radius-2xl);
    padding: var(--space-2xl);
    height: 100%;
    transition: var(--transition-all);
    border: 1px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.lesson-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-bg-strong);
    opacity: 0;
    transition: var(--transition-base);
}

.lesson-card:hover::before {
    opacity: 1;
}

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

.lesson-icon {
    width: 70px;
    height: 70px;
    background: var(--gradient-primary);
    border-radius: var(--radius-2xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--space-xl);
    color: white;
    font-size: var(--font-size-2xl);
}

.lesson-card h3 {
    color: var(--text-primary);
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-base);
    font-weight: var(--font-weight-semibold);
}

.lesson-card p {
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.6;
}

.btn-lesson {
    display: inline-flex;
    align-items: center;
    padding: var(--space-sm) var(--space-xl);
    background: var(--gradient-primary);
    color: white;
    border-radius: var(--radius-lg);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: var(--transition-all);
}

.btn-lesson:hover {
    transform: translateX(5px);
    color: white;
    box-shadow: var(--shadow-primary);
}

/* Resources Section */
.resources-section {
    margin-top: var(--space-5xl);
    padding: var(--space-4xl) 0;
    background: var(--card-bg);
    border-radius: var(--radius-3xl);
    border: 1px solid var(--border-color);
}

.resources-section h2 {
    color: var(--text-primary);
    margin-bottom: var(--space-2xl);
    position: relative;
    display: inline-block;
}

.resources-section h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: var(--radius-xs);
}

.resource-card {
    background: var(--background);
    border-radius: var(--radius-2xl);
    padding: var(--space-2xl);
    text-align: center;
    transition: var(--transition-all);
    border: 1px solid var(--border-color);
}

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

.resource-card i {
    font-size: var(--font-size-4xl);
    color: var(--primary);
    margin-bottom: var(--space-xl);
}

.resource-card h4 {
    color: var(--text-primary);
    font-size: var(--font-size-xl);
    margin-bottom: var(--space-base);
    font-weight: var(--font-weight-semibold);
}

.resource-card p {
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
}

.btn-resource {
    display: inline-flex;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    background: var(--primary);
    color: white;
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: var(--transition-all);
}

.btn-resource:hover {
    background: var(--secondary);
    color: white;
    transform: translateX(5px);
}

/* Dark Mode Adjustments */
[data-theme="dark"] .lesson-card::before {
    background: var(--gradient-bg-strong);
}

[data-theme="dark"] .resource-card {
    background: var(--card-bg);
}

[data-theme="dark"] .btn-resource:hover {
    box-shadow: var(--shadow-primary);
}

[data-theme="dark"] .subject-card {
    background: rgba(255, 255, 255, 0.05);
    border-color: rgba(255, 255, 255, 0.1);
}

[data-theme="dark"] .card-icon {
    box-shadow: var(--shadow-lg);
}

/* Mobile Responsiveness */
@media (max-width: 1200px) {
    .grade1-grid, .grade2-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .grade1-grid, .grade2-grid, .grade3-grid {
        grid-template-columns: 1fr;
    }

    .grade-title {
        font-size: var(--font-size-4xl);
    }

    .card-grid {
        gap: var(--space-xl);
    }

    .subject-card {
        padding: var(--space-xl);
    }

    .grade-hero {
        padding: 180px 0 var(--space-4xl);
        margin-top: 0;
    }

    .grade-header {
        padding: 180px 0 var(--space-4xl);
        margin-top: 0;
    }
    
    .grade-header-content {
        text-align: center;
        padding-top: var(--space-2xl);
    }
    
    .grade-header h1 {
        font-size: var(--font-size-3xl);
        margin-top: var(--space-base);
    }

    .lesson-card {
        padding: var(--space-xl);
    }

    .lesson-icon {
        width: 60px;
        height: 60px;
        font-size: var(--font-size-xl);
    }

    .resource-card {
        padding: var(--space-xl);
    }
}