/* ===================================
   Bridge Course - Components Stylesheet
   Component-specific styles for modular design
   =================================== */

/* ===================================
   Features Section
   =================================== */
.features {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
}

.feature-card {
    background: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid var(--border-light);
}

.feature-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.feature-icon {
    width: 70px;
    height: 70px;
    background: var(--primary-gradient);
    border-radius: var(--radius-xl);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: var(--spacing-lg);
    transition: transform var(--transition-base);
}

.feature-card:hover .feature-icon {
    transform: scale(1.1) rotate(5deg);
}

.feature-icon i {
    font-size: var(--text-3xl);
    color: var(--white);
}

.feature-title {
    font-size: var(--text-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.feature-description {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.feature-list {
    list-style: none;
    padding: 0;
}

.feature-list li {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) 0;
    color: var(--text-secondary);
    font-size: var(--text-sm);
}

.feature-list i {
    color: var(--success-color);
    font-size: var(--text-sm);
}

/* ===================================
   Subjects Section
   =================================== */
.subjects {
    padding: var(--spacing-3xl) 0;
    background: var(--white);
}

.subjects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.subject-card {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--white) 100%);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-base);
    border: 2px solid transparent;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

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

.subject-card:hover::before {
    opacity: 0.05;
}

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

.subject-icon {
    width: 80px;
    height: 80px;
    background: var(--primary-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    transition: all var(--transition-base);
    position: relative;
    z-index: 1;
}

.subject-card:hover .subject-icon {
    transform: scale(1.15) rotate(360deg);
}

.subject-icon i {
    font-size: var(--text-3xl);
    color: var(--white);
}

.subject-card h3 {
    font-size: var(--text-2xl);
    margin-bottom: var(--spacing-sm);
    position: relative;
    z-index: 1;
}

.subject-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    position: relative;
    z-index: 1;
}

.subject-stats {
    display: flex;
    justify-content: center;
    gap: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
    position: relative;
    z-index: 1;
}

.subject-stats span {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-size: var(--text-sm);
    color: var(--text-secondary);
    font-weight: 500;
}

.subject-stats i {
    color: var(--primary-color);
}

/* Subject-specific colors */
.subject-card[data-subject="physics"] .subject-icon {
    background: linear-gradient(135deg, #3B82F6 0%, #1D4ED8 100%);
}

.subject-card[data-subject="chemistry"] .subject-icon {
    background: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
}

.subject-card[data-subject="biology"] .subject-icon {
    background: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
}

.subject-card[data-subject="mathematics"] .subject-icon {
    background: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
}

.subject-card[data-subject="english"] .subject-icon {
    background: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
}

.subject-card[data-subject="social"] .subject-icon {
    background: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
}

/* ===================================
   Entrance Exams Section
   =================================== */
.exams {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

.exams-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.exam-card {
    background: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border-left: 4px solid var(--primary-color);
}

.exam-card:hover {
    transform: translateX(10px);
    box-shadow: var(--shadow-lg);
}

.exam-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: var(--spacing-md);
    gap: var(--spacing-md);
}

.exam-header h3 {
    font-size: var(--text-xl);
    color: var(--text-primary);
    flex: 1;
}

.exam-badge {
    display: inline-block;
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(37, 99, 235, 0.1) 100%);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    color: var(--primary-color);
    font-weight: 600;
    white-space: nowrap;
}

.exam-card p {
    color: var(--text-secondary);
    line-height: 1.7;
}

/* ===================================
   How It Works Section
   =================================== */
.how-it-works {
    padding: var(--spacing-3xl) 0;
    background: var(--white);
}

.steps-container {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: var(--spacing-lg);
    align-items: center;
    max-width: 1100px;
    margin: 0 auto;
}

.step-card {
    background: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    text-align: center;
    box-shadow: var(--shadow-md);
    position: relative;
    transition: all var(--transition-base);
    border: 2px solid var(--border-light);
}

.step-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.step-number {
    position: absolute;
    top: -15px;
    left: 50%;
    transform: translateX(-50%);
    width: 40px;
    height: 40px;
    background: var(--primary-gradient);
    color: var(--white);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: var(--text-lg);
    box-shadow: var(--shadow-md);
}

.step-icon {
    width: 70px;
    height: 70px;
    background: linear-gradient(135deg, rgba(59, 130, 246, 0.1) 0%, rgba(37, 99, 235, 0.1) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: var(--spacing-lg) auto;
}

.step-icon i {
    font-size: var(--text-3xl);
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.step-card h3 {
    font-size: var(--text-xl);
    margin-bottom: var(--spacing-sm);
}

.step-card p {
    font-size: var(--text-sm);
    color: var(--text-secondary);
    margin: 0;
}

.step-arrow {
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary-color);
    font-size: var(--text-2xl);
}

/* ===================================
   Testimonials Section
   =================================== */
.testimonials {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-secondary);
}

.testimonials-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.testimonial-card {
    background: var(--white);
    padding: var(--spacing-2xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    transition: all var(--transition-base);
    border: 1px solid var(--border-light);
}

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

.testimonial-rating {
    display: flex;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-lg);
}

.testimonial-rating i {
    color: var(--secondary-color);
    font-size: var(--text-lg);
}

.testimonial-text {
    font-size: var(--text-base);
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    font-style: italic;
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.author-avatar {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    overflow: hidden;
    background: var(--primary-gradient);
    display: flex;
    align-items: center;
    justify-content: center;
}

.author-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.author-info h4 {
    font-size: var(--text-base);
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.author-info p {
    font-size: var(--text-sm);
    color: var(--text-light);
    margin: 0;
}

.slider-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.slider-btn {
    width: 45px;
    height: 45px;
    background: var(--white);
    border: 2px solid var(--primary-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-base);
    color: var(--primary-color);
    font-size: var(--text-lg);
}

.slider-btn:hover {
    background: var(--primary-color);
    color: var(--white);
    transform: scale(1.1);
}

.slider-dots {
    display: flex;
    gap: var(--spacing-sm);
}

.slider-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--border-color);
    cursor: pointer;
    transition: all var(--transition-base);
}

.slider-dot.active {
    background: var(--primary-color);
    width: 30px;
    border-radius: var(--radius-full);
}

/* ===================================
   FAQ Section
   =================================== */
.faq {
    padding: var(--spacing-3xl) 0;
    background: var(--white);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    background: var(--white);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    overflow: hidden;
    transition: all var(--transition-base);
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-lg) var(--spacing-xl);
    background: transparent;
    border: none;
    text-align: left;
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--text-primary);
    cursor: pointer;
    transition: all var(--transition-base);
    font-family: var(--font-primary);
}

.faq-question:hover {
    color: var(--primary-color);
}

.faq-question i {
    font-size: var(--text-xl);
    color: var(--primary-color);
    transition: transform var(--transition-base);
}

.faq-item.active .faq-question i {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-slow);
}

.faq-item.active .faq-answer {
    max-height: 500px;
}

.faq-answer p {
    padding: 0 var(--spacing-xl) var(--spacing-lg);
    color: var(--text-secondary);
    line-height: 1.8;
}

/* ===================================
   Download Section
   =================================== */
.download {
    padding: var(--spacing-3xl) 0;
    background: var(--bg-dark);
    position: relative;
    overflow: hidden;
}

.download-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 0;
}

.download-shape {
    position: absolute;
    border-radius: 50%;
    opacity: 0.1;
}

.download-shape.shape-1 {
    width: 500px;
    height: 500px;
    background: var(--primary-gradient);
    top: -150px;
    right: -100px;
}

.download-shape.shape-2 {
    width: 400px;
    height: 400px;
    background: linear-gradient(135deg, #60A5FA 0%, #2563EB 100%);
    bottom: -100px;
    left: -150px;
}

.download-content {
    position: relative;
    z-index: 1;
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.download-text h2 {
    font-size: var(--text-4xl);
    color: var(--white);
    margin-bottom: var(--spacing-lg);
}

.download-text p {
    font-size: var(--text-lg);
    color: rgba(255, 255, 255, 0.8);
    margin-bottom: var(--spacing-xl);
}

.download-features {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-2xl);
}

.download-feature {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    color: var(--white);
    font-weight: 500;
}

.download-feature i {
    color: var(--success-color);
    font-size: var(--text-xl);
}

.download-buttons {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.download-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-xl);
    background: var(--white);
    color: var(--text-primary);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    box-shadow: var(--shadow-lg);
}

.download-btn:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.download-btn i {
    font-size: var(--text-3xl);
}

.download-btn div {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.download-btn .small {
    font-size: var(--text-xs);
    color: var(--text-secondary);
}

.download-btn .large {
    font-size: var(--text-lg);
    font-weight: 700;
    color: var(--text-primary);
}

.download-image {
    position: relative;
}

.download-image img {
    width: 100%;
    max-width: 400px;
    margin: 0 auto;
    display: block;
    filter: drop-shadow(0 25px 50px rgba(0, 0, 0, 0.5));
}

/* ===================================
   Footer
   =================================== */
.footer {
    background: var(--bg-dark);
    color: rgba(255, 255, 255, 0.8);
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: var(--spacing-2xl);
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-column h3 {
    color: var(--white);
    font-size: var(--text-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-column ul {
    list-style: none;
}

.footer-column ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-column ul li a {
    color: rgba(255, 255, 255, 0.7);
    transition: color var(--transition-base);
}

.footer-column ul li a:hover {
    color: var(--white);
}

.footer-brand {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: var(--text-2xl);
    font-weight: 800;
    color: var(--white);
    margin-bottom: var(--spacing-md);
    font-family: var(--font-primary);
}

.footer-brand .logo-img {
    height: 44px;
    width: auto;
    object-fit: contain;
}

.footer-brand i {
    font-size: var(--text-3xl);
    color: var(--primary-color);
}

.footer-column p {
    color: rgba(255, 255, 255, 0.7);
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
}

.social-links {
    display: flex;
    gap: var(--spacing-md);
}

.social-links a {
    width: 40px;
    height: 40px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    transition: all var(--transition-base);
}

.social-links a:hover {
    background: var(--primary-gradient);
    transform: translateY(-3px);
}

.footer-bottom {
    text-align: center;
}

.footer-bottom p {
    color: rgba(255, 255, 255, 0.6);
    margin-bottom: var(--spacing-md);
}

.footer-keywords {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.footer-keywords span {
    padding: var(--spacing-xs) var(--spacing-md);
    background: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-full);
    font-size: var(--text-xs);
    color: rgba(255, 255, 255, 0.6);
}