/* ============================================
   K-Lite Codec Pack - Component Styles
   ============================================ */

/* Page-specific Components */

/* Download Page */
.download-hero {
    text-align: center;
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, #f7f9fc 0%, #e8f0f8 100%);
    position: relative;
    overflow: hidden;
}

.download-hero::before {
    content: '';
    position: absolute;
    top: -30%;
    left: -10%;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, rgba(58, 176, 255, 0.15) 0%, transparent 70%);
    border-radius: 50%;
}

.download-button-container {
    margin: var(--spacing-lg) 0;
}

.download-button-main {
    display: inline-block;
    padding: 22px 56px;
    font-size: 1.375rem;
    font-weight: 700;
    background: var(--gradient-primary);
    color: var(--color-background);
    border-radius: 12px;
    text-decoration: none;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    min-width: 320px;
    box-shadow: var(--shadow-xl);
    position: relative;
    overflow: hidden;
    letter-spacing: 0.5px;
}

.download-button-main::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;
}

.download-button-main:hover::before {
    width: 400px;
    height: 400px;
}

.download-button-main:hover {
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 12px 32px rgba(10, 61, 98, 0.4);
    background: var(--gradient-accent);
}

.download-button-main:active {
    transform: translateY(-2px) scale(1);
}

.download-reassurance {
    margin-top: var(--spacing-sm);
    color: var(--color-secondary-text);
    font-size: 1rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
}

.download-reassurance::before {
    content: '✓';
    color: var(--color-accent-cyan);
    font-weight: bold;
    font-size: 1.125rem;
}

.download-info {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    border-radius: 16px;
    padding: var(--spacing-lg);
    margin: var(--spacing-lg) 0;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(58, 176, 255, 0.1);
    position: relative;
    overflow: hidden;
}

.download-info::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 4px;
    height: 100%;
    background: var(--gradient-accent);
}

.download-info-list {
    list-style: none;
    padding: 0;
    margin-top: var(--spacing-md);
}

.download-info-list li {
    padding: var(--spacing-sm) 0;
    padding-left: var(--spacing-lg);
    position: relative;
    font-size: 1.0625rem;
    line-height: 1.7;
    color: var(--color-primary-text);
    transition: transform 0.2s ease;
}

.download-info-list li:hover {
    transform: translateX(4px);
}

.download-info-list li:before {
    content: "✓";
    position: absolute;
    left: 0;
    color: var(--color-accent-cyan);
    font-weight: bold;
    font-size: 1.25rem;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(58, 176, 255, 0.1);
    border-radius: 50%;
}

/* FAQ Accordion */
.faq-section {
    max-width: 800px;
    margin: 0 auto;
}

.faq-category {
    margin-bottom: var(--spacing-lg);
}

.faq-category-title {
    font-size: 1.75rem;
    margin-bottom: var(--spacing-md);
    color: var(--color-primary-blue);
    font-weight: 700;
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.faq-category-title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--gradient-accent);
    border-radius: 2px;
}

.faq-item {
    background-color: var(--color-background);
    border: 1px solid var(--color-border);
    border-radius: 12px;
    margin-bottom: var(--spacing-sm);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.3s ease;
}

.faq-item:hover {
    box-shadow: var(--shadow-md);
    border-color: var(--color-accent-cyan);
}

.faq-item.active {
    border-color: var(--color-accent-cyan);
    box-shadow: var(--shadow-md);
}

.faq-question {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: none;
    border: none;
    text-align: left;
    font-size: 1.0625rem;
    font-weight: 600;
    color: var(--color-primary-text);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.faq-question:hover {
    background: linear-gradient(90deg, rgba(58, 176, 255, 0.05) 0%, transparent 100%);
    color: var(--color-primary-blue);
}

.faq-question:focus {
    outline: 2px solid var(--color-accent-cyan);
    outline-offset: -2px;
}

.faq-icon {
    transition: transform 0.3s ease;
    font-size: 1.25rem;
    color: var(--color-accent-cyan);
}

.faq-item.active .faq-icon {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    padding: 0 var(--spacing-md);
}

.faq-item.active .faq-answer {
    max-height: 1000px;
    padding: 0 var(--spacing-md) var(--spacing-md);
}

.faq-answer-content {
    color: var(--color-secondary-text);
    line-height: 1.6;
}

/* Contact Form */
.contact-form {
    max-width: 600px;
    margin: 0 auto;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    padding: var(--spacing-xl);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.form-group {
    margin-bottom: var(--spacing-md);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-weight: 500;
    color: var(--color-primary-text);
}

.form-label .required {
    color: #dc3545;
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: 14px 16px;
    border: 2px solid var(--color-border);
    border-radius: 8px;
    font-size: 1rem;
    font-family: var(--font-family);
    transition: all 0.3s ease;
    background-color: var(--color-background);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-accent-cyan);
    box-shadow: 0 0 0 4px rgba(58, 176, 255, 0.1);
    transform: translateY(-1px);
}

.form-textarea {
    min-height: 150px;
    resize: vertical;
}

.form-error {
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
    display: none;
}

.form-group.error .form-error {
    display: block;
}

.form-group.error .form-input,
.form-group.error .form-select,
.form-group.error .form-textarea {
    border-color: #dc3545;
}

.form-submit {
    width: 100%;
    margin-top: var(--spacing-md);
}

.form-privacy {
    font-size: 0.875rem;
    color: var(--color-secondary-text);
    margin-top: var(--spacing-sm);
    text-align: center;
}

/* Codec Lists */
.codec-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--spacing-sm);
    list-style: none;
    padding: 0;
}

.codec-item {
    padding: var(--spacing-sm) var(--spacing-md);
    background: linear-gradient(135deg, #f7f9fc 0%, #ffffff 100%);
    border-radius: 8px;
    font-size: 0.9375rem;
    font-weight: 500;
    color: var(--color-primary-text);
    border: 1px solid rgba(58, 176, 255, 0.1);
    transition: all 0.3s ease;
    text-align: center;
}

.codec-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-sm);
    border-color: var(--color-accent-cyan);
    background: linear-gradient(135deg, #ffffff 0%, #f0f8ff 100%);
}

/* Page Header */
.page-header {
    text-align: center;
    padding: var(--spacing-xl) 0;
    background: linear-gradient(135deg, #f7f9fc 0%, #e8f0f8 100%);
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: -30%;
    right: -10%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(58, 176, 255, 0.1) 0%, transparent 70%);
    border-radius: 50%;
}

.page-header::after {
    content: '';
    position: absolute;
    bottom: -20%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(10, 61, 98, 0.05) 0%, transparent 70%);
    border-radius: 50%;
}

.page-header h1 {
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.6s ease-out;
}

.page-header p {
    position: relative;
    z-index: 1;
    animation: fadeInUp 0.8s ease-out;
}

.page-header h1 {
    margin-bottom: var(--spacing-sm);
}

.page-header p {
    font-size: 1.125rem;
    color: var(--color-secondary-text);
    max-width: 700px;
    margin: 0 auto;
}

/* Content Sections */
.content-section {
    margin-bottom: var(--spacing-xl);
}

.content-section h2 {
    margin-bottom: var(--spacing-md);
    color: var(--color-primary-blue);
    font-weight: 700;
    position: relative;
    padding-bottom: var(--spacing-sm);
}

.content-section h2::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 60px;
    height: 3px;
    background: var(--gradient-accent);
    border-radius: 2px;
}

.content-section h3 {
    margin-top: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary-blue);
    font-weight: 600;
}

.content-section p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
}

.content-section ul,
.content-section ol {
    margin-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary-text);
}

.content-section li {
    margin-bottom: var(--spacing-sm);
    line-height: 1.7;
    position: relative;
    padding-left: var(--spacing-xs);
}

.content-section ul li::marker {
    color: var(--color-accent-cyan);
}

.content-section ol li {
    padding-left: var(--spacing-sm);
}

/* Feature Detail Cards */
.feature-detail-card {
    background: linear-gradient(135deg, #ffffff 0%, #f3f6fb 100%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: all 0.35s ease-out;
}

.feature-detail-card:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(47, 124, 246, 0.25);
}

.feature-detail-title {
    color: var(--color-primary-blue);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    font-size: 1.25rem;
}

.feature-detail-text {
    color: var(--color-secondary-text);
    line-height: 1.7;
}

/* Compatibility List */
.compatibility-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    list-style: none;
    padding: 0;
}

.compatibility-item {
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, #ffffff 0%, #f2f6fb 100%);
    border-radius: var(--radius-xl);
    text-align: center;
    font-weight: 500;
    border: 2px solid rgba(47, 124, 246, 0.1);
    transition: all 0.35s ease-out;
    box-shadow: var(--shadow-sm);
}

.compatibility-item:hover {
    transform: translateY(-6px);
    box-shadow: var(--shadow-lg);
    border-color: rgba(47, 124, 246, 0.3);
    background: linear-gradient(135deg, #eef4ff 0%, #ffffff 100%);
}

/* Tutorial Cards */
.tutorial-card {
    background: linear-gradient(135deg, #ffffff 0%, #f4f7fb 100%);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    transition: all 0.35s ease-out;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid transparent;
}

.tutorial-card:hover {
    box-shadow: var(--shadow-xl);
    border-left-color: var(--color-accent-cyan);
    transform: translateY(-6px);
}

.tutorial-title {
    color: var(--color-primary-blue);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    font-size: 1.375rem;
}

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

.tutorial-link {
    color: var(--color-accent-cyan);
    font-weight: 600;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.tutorial-link:hover {
    color: var(--color-primary-blue);
    transform: translateX(4px);
}

.tutorial-link::after {
    content: '→';
    transition: transform 0.3s ease;
}

.tutorial-link:hover::after {
    transform: translateX(4px);
}

/* Video Placeholder */
.video-placeholder {
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, #f7f9fc 0%, #e8f0f8 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-secondary-text);
    margin: var(--spacing-md) 0;
    border: 2px dashed rgba(58, 176, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.video-placeholder::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 80px;
    height: 80px;
    background: var(--gradient-accent);
    border-radius: 50%;
    opacity: 0.1;
}

.video-placeholder p {
    position: relative;
    z-index: 1;
    font-weight: 500;
}

/* Quick Links */
.quick-links {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    justify-content: center;
}

.quick-link {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: linear-gradient(135deg, #f7f9fc 0%, #ffffff 100%);
    border-radius: 8px;
    color: var(--color-primary-text);
    text-decoration: none;
    transition: all 0.3s ease;
    border: 2px solid rgba(58, 176, 255, 0.1);
    font-weight: 500;
    box-shadow: var(--shadow-sm);
}

.quick-link:hover {
    background: var(--gradient-primary);
    color: var(--color-background);
    border-color: transparent;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Responsive Components */
@media (max-width: 768px) {
    .download-button-main {
        width: 100%;
        max-width: 100%;
        min-width: auto;
        padding: 16px 24px;
        font-size: 1.125rem;
    }
    
    .codec-list {
        grid-template-columns: 1fr;
    }
    
    .compatibility-list {
        grid-template-columns: 1fr;
    }
    
    .quick-links {
        flex-direction: column;
    }
    
    .quick-link {
        text-align: center;
    }
    
    .contact-form {
        padding: var(--spacing-md);
    }
}