/* ==========================================================================
   KEYWORK v4 - Common Components
   ========================================================================== */

/* ========== Buttons ========== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    line-height: 1;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    cursor: pointer;
    white-space: nowrap;
}

.btn--primary {
    background-color: var(--color-primary-500);
    color: var(--text-inverse);
}

.btn--primary:hover {
    background-color: var(--color-primary-600);
    color: var(--text-inverse);
}

.btn--secondary {
    background-color: var(--bg-primary);
    color: var(--color-primary-500);
    border: 1px solid var(--color-primary-500);
}

.btn--secondary:hover {
    background-color: var(--color-primary-50);
}

.btn--ghost {
    background-color: transparent;
    color: var(--text-secondary);
}

.btn--ghost:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.btn--danger {
    background-color: var(--color-error);
    color: var(--text-inverse);
}

.btn--danger:hover {
    background-color: #DC2626;
    color: var(--text-inverse);
}

.btn--sm {
    padding: var(--spacing-1) var(--spacing-3);
    font-size: var(--font-size-xs);
}

.btn--lg {
    padding: var(--spacing-3) var(--spacing-6);
    font-size: var(--font-size-base);
}

.btn--block {
    width: 100%;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ========== Cards ========== */

.card {
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: box-shadow var(--transition-fast);
}

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

.card__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) var(--spacing-5);
    border-bottom: 1px solid var(--border-color);
}

.card__title {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.card__title-icon {
    font-size: var(--font-size-lg);
}

.card__more {
    font-size: var(--font-size-sm);
    color: var(--text-tertiary);
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

.card__more:hover {
    color: var(--color-primary-500);
}

.card__body {
    padding: var(--spacing-4) var(--spacing-5);
}

.card__footer {
    padding: var(--spacing-3) var(--spacing-5);
    border-top: 1px solid var(--border-color);
    background-color: var(--bg-secondary);
}

/* ========== Badges ========== */

.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-1) var(--spacing-2);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    border-radius: var(--radius-sm);
    line-height: 1;
}

.badge--urgent {
    background-color: #FEE2E2;
    color: #DC2626;
}

.badge--open {
    background-color: #FEF3C7;
    color: #D97706;
}

.badge--new {
    background-color: #DBEAFE;
    color: #2563EB;
}

.badge--hot {
    background-color: #FEE2E2;
    color: #DC2626;
}

.badge--source {
    background-color: var(--bg-tertiary);
    color: var(--text-tertiary);
}

.badge--closed {
    background-color: var(--bg-tertiary);
    color: var(--text-muted);
}

.badge--notice {
    background-color: #FEE2E2;
    color: #DC2626;
}

.badge--pinned {
    background-color: #FEF3C7;
    color: #D97706;
}

.badge--board {
    background-color: #EEF2FF;
    color: #4F46E5;
    font-size: 10px;
    white-space: nowrap;
}

/* ========== Level Badge ========== */

.lv-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 2px 6px;
    font-size: 11px;
    font-weight: 700;
    color: #fff;
    background: linear-gradient(135deg, var(--color-primary-500), var(--color-primary-700));
    border-radius: 4px;
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    line-height: 1.2;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.lv-badge:hover {
    transform: scale(1.05);
    box-shadow: 0 2px 8px rgba(0,0,0,0.2);
}

.lv-badge::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    padding: 6px 10px;
    background: rgba(0,0,0,0.85);
    color: #fff;
    font-size: 12px;
    font-weight: 500;
    border-radius: 6px;
    white-space: nowrap;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s, visibility 0.2s;
    margin-bottom: 6px;
    z-index: 100;
    pointer-events: none;
}

.lv-badge:hover::after {
    opacity: 1;
    visibility: visible;
}

/* 작은 버전 (리스트용) */
.lv-badge--sm {
    padding: 1px 4px;
    font-size: 10px;
}

/* 레벨별 색상 */
.lv-badge--lv0 {
    background: transparent;
    color: var(--color-gray-500);
    border: 1px dashed var(--color-gray-300);
}

.lv-badge--lv1 {
    background: linear-gradient(135deg, #38bdf8, #0ea5e9);
    color: #1e293b;
}

.lv-badge--lv2 {
    background: linear-gradient(135deg, #9333ea, #7c3aed);
    color: #1e293b;
}

.lv-badge--lv3 {
    background: #3b82f6;
    color: #1e293b;
}

.lv-badge--lv4 {
    background: #1e3a8a;
    color: #fff;
}

.lv-badge--lv5 {
    background: linear-gradient(90deg, #3b82f6 0%, #1e3a8a 100%);
    background-size: 300% 100%;
    animation: lv6-wave 4s ease-in-out infinite alternate;
}

.lv-badge--lv6 {
    background: linear-gradient(90deg, #ffffff 0%, #3b82f6 50%, #1e3a8a 100%);
    background-size: 300% 100%;
    animation: lv6-wave 4s ease-in-out infinite alternate;
}

@keyframes lv6-wave {
    0% { background-position: 0% 50%; }
    100% { background-position: 100% 50%; }
}

.lv-badge--lv7 {
    background: linear-gradient(90deg, #ef4444, #f97316, #eab308, #22c55e, #3b82f6, #6366f1, #a855f7);
    background-size: 200% 100%;
    animation: rainbow-shift 3s linear infinite;
}

@keyframes rainbow-shift {
    0% { background-position: 0% 50%; }
    100% { background-position: 200% 50%; }
}

.lv-badge--lv8 {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.lv-badge--lv9 {
    background: linear-gradient(135deg, #f59e0b, #d97706);
}

.lv-badge--lv10 {
    background: linear-gradient(135deg, #ef4444, #dc2626);
}

/* Level Badge Link */
.lv-badge-link {
    text-decoration: none;
    display: inline-flex;
    cursor: pointer;
}

.lv-badge-link:hover .lv-badge {
    transform: scale(1.1);
    box-shadow: 0 3px 10px rgba(0,0,0,0.25);
}

/* ========== Post Item (List) ========== */

.post-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-2);
    padding: var(--spacing-4) 0;
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.post-item:last-child {
    border-bottom: none;
}

.post-item:hover {
    background-color: var(--bg-secondary);
    margin: 0 calc(var(--spacing-5) * -1);
    padding-left: var(--spacing-5);
    padding-right: var(--spacing-5);
}

.post-item__title {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    line-height: 1.4;
}

.post-item__title-text {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.post-item__preview {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    line-height: 1.5;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
}

.post-item__meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

.post-item__meta-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
}

/* ========== Post Card (Grid) ========== */

.post-card {
    display: flex;
    flex-direction: column;
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    overflow: hidden;
    cursor: pointer;
    transition: box-shadow var(--transition-fast), transform var(--transition-fast);
}

.post-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.post-card__image {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 */
    background-color: var(--bg-tertiary);
    overflow: hidden;
}

.post-card__image img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.post-card__play {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 48px;
    height: 48px;
    background-color: rgba(0, 0, 0, 0.7);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-inverse);
    font-size: var(--font-size-xl);
}

.post-card__body {
    padding: var(--spacing-3);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.post-card__title {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
    line-height: 1.4;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    margin-bottom: var(--spacing-2);
}

.post-card__meta {
    margin-top: auto;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* ========== Job Card ========== */

.job-card {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    background-color: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: box-shadow var(--transition-fast);
}

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

.job-card__header {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-3);
}

.job-card__title {
    flex: 1;
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
    line-height: 1.4;
}

.job-card__tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-2);
}

.job-card__tag {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    font-size: var(--font-size-xs);
    color: var(--text-secondary);
}

.job-card__meta {
    display: flex;
    align-items: center;
    justify-content: space-between;
    font-size: var(--font-size-xs);
    color: var(--text-muted);
}

/* ========== Pagination ========== */

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-1);
    margin-top: var(--spacing-6);
}

.pagination__btn {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 32px;
    height: 32px;
    padding: 0 var(--spacing-2);
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.pagination__btn:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.pagination__btn.active {
    background-color: var(--color-primary-500);
    color: var(--text-inverse);
}

.pagination__btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ========== Empty State ========== */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-12) var(--spacing-6);
    text-align: center;
}

.empty-state__icon {
    font-size: 48px;
    color: var(--text-muted);
    margin-bottom: var(--spacing-4);
}

.empty-state__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2);
}

.empty-state__desc {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
}

/* ========== Loading ========== */

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-8);
}

.loading__spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--border-color);
    border-top-color: var(--color-primary-500);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
}

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

/* ========== Form Elements ========== */

.form-group {
    margin-bottom: var(--spacing-4);
}

.form-label {
    display: block;
    margin-bottom: var(--spacing-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

.form-label.required::after {
    content: ' *';
    color: var(--color-error);
}

.form-input,
.form-select,
.form-textarea {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-sm);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-primary);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px var(--color-primary-100);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-muted);
}

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

.form-select {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748B' stroke-width='2'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 40px;
}

.form-check-group {
    display: flex;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    cursor: pointer;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
    width: 14px;
    height: 14px;
    cursor: pointer;
    accent-color: var(--color-primary-500);
}

.form-check span {
    font-size: var(--font-size-xs);
    color: var(--text-tertiary);
    user-select: none;
}

.form-checkbox,
.form-radio {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    cursor: pointer;
}

.form-checkbox input,
.form-radio input {
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.form-error {
    margin-top: var(--spacing-1);
    font-size: var(--font-size-xs);
    color: var(--color-error);
}

/* ========== Tabs ========== */

.tabs {
    display: flex;
    gap: var(--spacing-1);
    border-bottom: 1px solid var(--border-color);
    margin-bottom: var(--spacing-4);
}

.tab {
    padding: var(--spacing-3) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
    border-bottom: 2px solid transparent;
    margin-bottom: -1px;
    transition: all var(--transition-fast);
}

.tab:hover {
    color: var(--color-primary-500);
}

.tab.active {
    color: var(--color-primary-500);
    border-bottom-color: var(--color-primary-500);
}

/* ========== Modal ========== */

.modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: var(--z-modal-backdrop);
    background-color: rgba(0, 0, 0, 0.5);
    display: none;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-4);
}

.modal-backdrop.active {
    display: flex;
}

.modal {
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    background-color: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    display: flex;
    flex-direction: column;
}

.modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-4) var(--spacing-5);
    border-bottom: 1px solid var(--border-color);
}

.modal__title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
}

.modal__close {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    border-radius: var(--radius-md);
}

.modal__close:hover {
    background-color: var(--bg-tertiary);
    color: var(--text-primary);
}

.modal__body {
    padding: var(--spacing-5);
    overflow-y: auto;
}

.modal__footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-3);
    padding: var(--spacing-4) var(--spacing-5);
    border-top: 1px solid var(--border-color);
}

/* ========== Toast ========== */

.toast-container {
    position: fixed;
    bottom: var(--spacing-6);
    right: var(--spacing-6);
    z-index: var(--z-toast);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.toast {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    background-color: var(--color-gray-800);
    color: var(--text-inverse);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 280px;
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

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

.toast--error {
    background-color: var(--color-error);
}

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

@media (max-width: 768px) {
    .toast-container {
        left: var(--spacing-4);
        right: var(--spacing-4);
        bottom: var(--spacing-4);
    }

    .toast {
        min-width: auto;
    }
}

/* ========== Search Highlight ========== */

mark {
    background-color: var(--color-warning-100);
    color: var(--color-warning-900);
    padding: 2px 4px;
    border-radius: var(--radius-sm);
    font-weight: var(--font-weight-semibold);
}

/* ========== Empty State ========== */

.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-12) var(--spacing-6);
    text-align: center;
    color: var(--text-muted);
}

.empty-state i {
    font-size: 4rem;
    margin-bottom: var(--spacing-4);
    color: var(--color-gray-300);
}

.empty-state h3 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2);
}

.empty-state p {
    font-size: var(--font-size-base);
    color: var(--text-muted);
}

/* ========== 모바일 클릭 문제 해결 ========== */

/* 모든 클릭 가능한 요소에 cursor 명시 */
a, button,
.btn,
.card__more,
.section-card__more,
.post-item,
.post-card,
.job-card,
.job-item {
    cursor: pointer;
}

/* 모바일 클릭 문제 해결 (Critical Fix) */
@media (max-width: 768px) {
    /* 클릭 가능한 모든 요소에 포인터 이벤트 명시 */
    a, button,
    .btn,
    .card__more,
    .section-card__more,
    .post-item,
    .post-card,
    .job-card,
    .job-item {
        pointer-events: auto !important;
        cursor: pointer;
        -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
        touch-action: manipulation;
    }

    /* 버튼 최소 터치 영역 (44x44px) */
    .btn,
    .btn--sm,
    .btn--primary,
    .btn--secondary {
        min-height: 44px;
        min-width: 44px;
        padding: 10px 16px;
    }

    /* 카드 더보기 링크 터치 영역 */
    .card__more {
        padding: 8px 12px;
        min-height: 44px;
        display: inline-flex;
        align-items: center;
    }

    /* 포스트/잡 아이템 터치 영역 */
    .post-item,
    .post-card,
    .job-card,
    .job-item {
        min-height: 48px;
    }
}

/* ========== Search Page (board-card 내부용) ========== */

.search-form {
    display: flex;
    gap: var(--spacing-2);
    margin-top: var(--spacing-4);
}

.search-form__filter {
    flex-shrink: 0;
    height: 44px;
    padding: 0 var(--spacing-4);
    padding-right: var(--spacing-8);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-secondary);
    font-size: var(--font-size-sm);
    color: var(--text-primary);
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
}

.search-form__filter:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px var(--color-primary-100);
}

.search-form__input {
    flex: 1;
    min-width: 0;
    height: 44px;
    padding: 0 var(--spacing-4);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: var(--bg-secondary);
    font-size: var(--font-size-base);
    color: var(--text-primary);
}

.search-form__input:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px var(--color-primary-100);
}

.search-form__input::placeholder {
    color: var(--text-muted);
}

/* Mobile Search */
@media (max-width: 768px) {
    .search-form {
        flex-wrap: wrap;
    }

    .search-form__filter {
        width: 100%;
        height: 40px;
    }

    .search-form__input {
        flex: 1;
        min-width: 0;
        height: 40px;
    }

    .search-form .btn {
        flex-shrink: 0;
    }
}