/**
 * コンポーネントスタイル
 * UIコンポーネント（ボタン、カード、バッジ、フォームなど）のスタイル定義
 *
 * @package KAC_LMS_Theme
 */

/* ==========================================================================
   Material Icons
   ========================================================================== */

.material-icons {
    font-family: 'Material Icons';
    font-weight: normal;
    font-style: normal;
    font-size: 24px;
    line-height: 1;
    letter-spacing: normal;
    text-transform: none;
    display: inline-block;
    white-space: nowrap;
    word-wrap: normal;
    direction: ltr;
    -webkit-font-feature-settings: 'liga';
    -webkit-font-smoothing: antialiased;
    vertical-align: middle;
}

/* ==========================================================================
   ボタン (Buttons)
   ========================================================================== */

.kac-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    min-height: 44px;
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    font-weight: 500;
    line-height: 1.5;
    text-decoration: none;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    cursor: pointer;
    user-select: none;
    border: var(--border-width) solid transparent;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    box-shadow: var(--shadow-none);
}

.kac-btn:hover {
    box-shadow: var(--shadow-sm);
    text-decoration: none;
}

.kac-btn:active {
    transform: translateY(0);
}

.kac-btn:disabled,
.kac-btn-disabled {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* ボタンサイズバリエーション */
.kac-btn-sm {
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
}

.kac-btn-lg {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-lg);
}

.kac-btn-block {
    display: flex;
    width: 100%;
}

/* ボタンカラーバリエーション */
.kac-btn-primary {
    color: var(--color-white);
    background-color: var(--color-primary);
    border-color: var(--color-primary);
}

.kac-btn-primary:hover {
    background-color: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
}

.kac-btn-secondary {
    color: var(--color-white);
    background-color: var(--color-secondary);
    border-color: var(--color-secondary);
}

.kac-btn-secondary:hover {
    background-color: var(--color-secondary-dark);
    border-color: var(--color-secondary-dark);
}

.kac-btn-accent {
    color: var(--color-white);
    background-color: var(--color-accent);
    border-color: var(--color-accent);
}

.kac-btn-accent:hover {
    background-color: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
}

.kac-btn-outline {
    color: var(--color-primary);
    background-color: transparent;
    border-color: var(--color-primary);
}

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

.kac-btn-text {
    color: var(--color-primary);
    background-color: transparent;
    border-color: transparent;
}

.kac-btn-text:hover {
    background-color: rgba(30, 58, 138, 0.1);
}

/* ==========================================================================
   カード (Cards)
   ========================================================================== */

.kac-card {
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: box-shadow var(--transition-base);
}

.kac-card:hover {
    box-shadow: var(--shadow-md);
}

.kac-card-header {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-gray-200);
}

.kac-card-body {
    padding: var(--spacing-md);
}

.kac-card-footer {
    padding: var(--spacing-md);
    border-top: 1px solid var(--color-gray-200);
    background-color: var(--color-gray-50);
}

/* コースカード */
.kac-course-card {
    display: flex;
    flex-direction: column;
    height: 100%;
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    transition: all var(--transition-base);
}

.kac-course-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-4px);
}

.kac-course-card-image {
    position: relative;
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.kac-course-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-base);
}

.kac-course-card:hover .kac-course-card-image img {
    transform: scale(1.05);
}

.kac-course-card-content {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    padding: var(--spacing-md);
}

.kac-course-card-title {
    margin: 0 0 var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: 700;
    line-height: 1.4;
}

.kac-course-card-title a {
    color: var(--color-text);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.kac-course-card-title a:hover {
    color: var(--color-primary);
}

.kac-course-card-excerpt {
    flex-grow: 1;
    margin-bottom: var(--spacing-md);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    line-height: 1.6;
}

.kac-course-card-footer {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    margin-top: auto;
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-gray-200);
}

.kac-course-price {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-accent);
}

/* ==========================================================================
   バッジ (Badges)
   ========================================================================== */

.kac-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 8px;
    font-size: var(--font-size-xs);
    font-weight: 600;
    line-height: 1;
    color: var(--color-white);
    background-color: var(--color-gray-500);
    border-radius: var(--border-radius-sm);
}

.kac-badge-primary {
    background-color: var(--color-primary);
}

.kac-badge-secondary {
    background-color: var(--color-secondary);
}

.kac-badge-accent {
    background-color: var(--color-accent);
}

.kac-badge-success {
    background-color: var(--color-success);
}

.kac-badge-warning {
    background-color: var(--color-warning);
}

.kac-badge-danger {
    background-color: var(--color-danger);
}

.kac-badge-info {
    background-color: var(--color-info);
}

/* コースバッジ */
.kac-course-badges {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-bottom: var(--spacing-sm);
}

.kac-category-badge,
.kac-tag-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 6px 12px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.kac-category-badge {
    color: var(--color-primary);
    background-color: rgba(30, 58, 138, 0.1);
}

.kac-category-badge:hover {
    background-color: var(--color-primary);
    color: var(--color-white);
}

.kac-tag-badge {
    color: var(--color-text-secondary);
    background-color: var(--color-gray-100);
}

.kac-tag-badge:hover {
    background-color: var(--color-gray-300);
    color: var(--color-text);
}

/* ==========================================================================
   プログレスバー (Progress Bar)
   ========================================================================== */

.kac-progress-wrapper {
    margin-bottom: var(--spacing-md);
}

.kac-progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xs);
}

.kac-progress-label {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text);
}

.kac-progress-percentage {
    font-size: var(--font-size-sm);
    font-weight: 700;
    color: var(--color-primary);
}

.kac-progress-bar {
    position: relative;
    width: 100%;
    height: 12px;
    background-color: var(--color-gray-200);
    border-radius: var(--border-radius-full);
    overflow: hidden;
}

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

/* ==========================================================================
   アラート (Alerts)
   ========================================================================== */

.kac-alert {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    margin-bottom: var(--spacing-md);
    border-radius: var(--border-radius);
    border-left: 4px solid;
}

.kac-alert .material-icons {
    flex-shrink: 0;
    font-size: 24px;
}

.kac-alert-content {
    flex: 1;
}

.kac-alert-title {
    margin: 0 0 var(--spacing-xs);
    font-size: var(--font-size-base);
    font-weight: 600;
}

.kac-alert-message {
    margin: 0;
    font-size: var(--font-size-sm);
}

.kac-alert-info {
    color: var(--color-info);
    background-color: rgba(59, 130, 246, 0.1);
    border-left-color: var(--color-info);
}

.kac-alert-success {
    color: var(--color-success);
    background-color: rgba(34, 197, 94, 0.1);
    border-left-color: var(--color-success);
}

.kac-alert-warning {
    color: var(--color-warning);
    background-color: rgba(245, 158, 11, 0.1);
    border-left-color: var(--color-warning);
}

.kac-alert-danger {
    color: var(--color-danger);
    background-color: rgba(239, 68, 68, 0.1);
    border-left-color: var(--color-danger);
}

/* ==========================================================================
   フォーム要素 (Form Elements)
   ========================================================================== */

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

.kac-form-label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text);
}

.kac-form-input,
.kac-form-textarea,
.kac-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    color: var(--color-text);
    background-color: var(--color-white);
    border: 2px solid var(--color-gray-300);
    border-radius: var(--border-radius);
    transition: border-color var(--transition-fast);
}

.kac-form-input:focus,
.kac-form-textarea:focus,
.kac-select:focus {
    outline: none;
    border-color: var(--color-primary);
}

.kac-form-textarea {
    min-height: 120px;
    resize: vertical;
}

.kac-checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
}

.kac-filter-checkbox {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

/* ==========================================================================
   モーダル (Modal)
   ========================================================================== */

.kac-modal {
    position: fixed;
    top: 0;
    left: 0;
    z-index: 9999;
    display: none;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.5);
}

.kac-modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
}

.kac-modal-content {
    position: relative;
    width: 90%;
    max-width: 600px;
    background-color: var(--color-white);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-xl);
    animation: modalSlideIn 0.3s ease-out;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.kac-modal-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-200);
}

.kac-modal-title {
    margin: 0;
    font-size: var(--font-size-xl);
    font-weight: 700;
}

.kac-modal-close {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    color: var(--color-text-secondary);
    transition: color var(--transition-fast);
}

.kac-modal-close:hover {
    color: var(--color-text);
}

.kac-modal-body {
    padding: var(--spacing-lg);
}

.kac-modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border-top: 1px solid var(--color-gray-200);
}

/* ==========================================================================
   タブ (Tabs)
   ========================================================================== */

.kac-course-tabs {
    display: flex;
    gap: var(--spacing-xs);
    border-bottom: 2px solid var(--color-gray-200);
    overflow-x: auto;
}

.kac-course-tab {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text-secondary);
    text-decoration: none;
    white-space: nowrap;
    border-bottom: 3px solid transparent;
    transition: all var(--transition-fast);
}

.kac-course-tab:hover {
    color: var(--color-primary);
    background-color: rgba(30, 58, 138, 0.05);
}

.kac-course-tab.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

/* ==========================================================================
   ページネーション (Pagination)
   ========================================================================== */

.kac-pagination {
    margin-top: var(--spacing-xl);
}

.kac-pagination ul {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xs);
    list-style: none;
    padding: 0;
    margin: 0;
}

.kac-pagination li {
    margin: 0;
}

.kac-pagination a,
.kac-pagination span {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: var(--spacing-xs) var(--spacing-sm);
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text);
    text-decoration: none;
    border: 2px solid var(--color-gray-300);
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.kac-pagination a:hover {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

.kac-pagination .current {
    background-color: var(--color-primary);
    border-color: var(--color-primary);
    color: var(--color-white);
}

/* ==========================================================================
   ローディング (Loading)
   ========================================================================== */

.kac-loading-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid var(--color-gray-200);
    border-top-color: var(--color-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.kac-loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 9998;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: rgba(255, 255, 255, 0.9);
}

/* ==========================================================================
   統計ウィジェット (Stats Widget)
   ========================================================================== */

.kac-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: var(--spacing-md);
}

.kac-stat-item {
    text-align: center;
    padding: var(--spacing-md);
    background-color: var(--color-gray-50);
    border-radius: var(--border-radius);
}

.kac-stat-value {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-primary);
    line-height: 1;
}

.kac-stat-label {
    margin-top: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
}

/* ==========================================================================
   FAQ (Frequently Asked Questions)
   ========================================================================== */

.kac-faq-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.kac-faq-item {
    padding: var(--spacing-md);
    background-color: var(--color-white);
    border: 2px solid var(--color-gray-200);
    border-radius: var(--border-radius);
    transition: border-color var(--transition-fast);
}

.kac-faq-item:hover {
    border-color: var(--color-primary);
}

.kac-faq-question {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
    margin: 0 0 var(--spacing-sm);
    font-size: var(--font-size-lg);
    font-weight: 600;
    color: var(--color-text);
}

.kac-faq-question .material-icons {
    color: var(--color-primary);
    flex-shrink: 0;
}

.kac-faq-answer {
    padding-left: calc(24px + var(--spacing-xs));
    color: var(--color-text-secondary);
    line-height: 1.7;
}

/* ==========================================================================
   シェアボタン (Share Buttons)
   ========================================================================== */

.kac-share-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.kac-share-btn {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    text-decoration: none;
    border-radius: var(--border-radius);
    transition: all var(--transition-fast);
}

.kac-share-twitter {
    color: var(--color-white);
    background-color: #2A2E39;
}

.kac-share-twitter:hover {
    background-color: #2A2E39;
}

.kac-share-facebook {
    color: var(--color-white);
    background-color: #2A2E39;
}

.kac-share-facebook:hover {
    background-color: #2A2E39;
}

.kac-share-line {
    color: var(--color-white);
    background-color: #059669;
}

.kac-share-line:hover {
    background-color: #059669;
}

/* ==========================================================================
   レスポンシブ調整
   ========================================================================== */

@media (max-width: 768px) {
    .kac-btn {
        font-size: var(--font-size-sm);
    }

    .kac-course-card-image {
        height: 180px;
    }

    .kac-modal-content {
        width: 95%;
        margin: var(--spacing-md);
    }

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