/* Instructor Area 전용 스타일 */
/* 스코프: [data-area="instructor"] */

/* 참고: 버튼, 네비게이션, 공통 컴포넌트는 src/input.css의 @layer components에 정의 */

/* =================
   Cards
   ================= */
[data-area="instructor"] .card {
    background-color: white;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

[data-area="instructor"] .card:hover {
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    transition: box-shadow 0.2s;
}

[data-area="instructor"] .card-accent {
    border-top: 4px solid var(--polynesian);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

[data-area="instructor"] .card-gradient {
    background: linear-gradient(to bottom right, #faf5ff, #eff6ff);
    border: 1px solid #e5e7eb;
}

/* =================
   Forms
   ================= */
[data-area="instructor"] .form-group {
    margin-bottom: 1rem;
}

[data-area="instructor"] .form-label {
    display: block;
    font-size: 1.25rem;
    font-weight: 500;
    color: #374151;
    margin-bottom: 0.5rem;
}

[data-area="instructor"] .form-help {
    font-size: 1rem;
    color: #6b7280;
    margin-top: 0.25rem;
}

[data-area="instructor"] .form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 1.125rem;
    transition: all 0.2s;
}

[data-area="instructor"] .form-input.w-32 {
    width: 8rem;
}

[data-area="instructor"] .form-input:focus {
    outline: none;
    ring: 2px;
    ring-color: var(--polynesian);
    border-color: var(--polynesian);
}

[data-area="instructor"] .form-select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    background-color: white;
    font-size: 1.125rem;
    transition: all 0.2s;
}

[data-area="instructor"] .form-textarea {
    width: 100%;
    height: 200px;
    max-height: 400px;
    padding: 0.75rem 1rem;
    border: 1px solid #d1d5db;
    border-radius: 0.5rem;
    font-size: 1.125rem;
    line-height: 1.6;
    transition: border-color 0.2s;
    resize: vertical;
    font-family: inherit;
    overflow-y: auto;
}

[data-area="instructor"] .form-textarea:focus {
    outline: none;
    border-color: var(--polynesian);
    box-shadow: 0 0 0 3px rgba(37, 74, 99, 0.1);
}

[data-area="instructor"] .form-checkbox,
[data-area="instructor"] .form-radio {
    width: 1.25rem;
    height: 1.25rem;
    border: 1px solid #d1d5db;
    accent-color: var(--polynesian);
}

[data-area="instructor"] .form-checkbox {
    border-radius: 0.25rem;
}

/* Toggle Switch */
[data-area="instructor"] .toggle-switch {
    position: relative;
    display: inline-flex;
    align-items: center;
    cursor: pointer;
}

[data-area="instructor"] .toggle-switch input {
    position: absolute;
    opacity: 0;
}

[data-area="instructor"] .toggle-slider {
    width: 2.75rem;
    height: 1.5rem;
    background-color: #e5e7eb;
    border-radius: 9999px;
    position: relative;
    transition: all 0.2s;
}

[data-area="instructor"] .toggle-slider::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 1.25rem;
    height: 1.25rem;
    background-color: white;
    border-radius: 50%;
    transition: all 0.2s;
}

[data-area="instructor"] .toggle-switch input:checked + .toggle-slider {
    background-color: var(--polynesian);
}

[data-area="instructor"] .toggle-switch input:checked + .toggle-slider::after {
    transform: translateX(1.25rem);
}

/* =================
   Alerts
   ================= */
[data-area="instructor"] .alert {
    padding: 1rem;
    border-radius: 0.5rem;
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
}

[data-area="instructor"] .alert-info {
    background-color: #dbeafe;
    border: 1px solid #bfdbfe;
    color: #1e40af;
}

[data-area="instructor"] .alert-success {
    background-color: #d1fae5;
    border: 1px solid #a7f3d0;
    color: #065f46;
}

[data-area="instructor"] .alert-danger {
    background-color: #fee2e2;
    border: 1px solid #fecaca;
    color: #991b1b;
}

[data-area="instructor"] .alert-warning {
    background-color: #fef3c7;
    border: 1px solid #fde68a;
    color: #92400e;
}

/* =================
   Navigation
   ================= */
[data-area="instructor"] .navbar {
    background-color: var(--polynesian);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
}

[data-area="instructor"] .navbar-brand {
    font-size: 1.25rem;
    font-weight: 700;
    color: white;
}

[data-area="instructor"] .navbar-nav {
    display: flex;
    gap: 1rem;
}

[data-area="instructor"] .navbar-link {
    color: #374151;
    text-decoration: none;
    padding: 0.5rem 1.125rem;
    border-radius: 0.375rem;
    font-weight: 500;
    transition: all 0.2s;
    background-color: #e5e7eb;
    border: 1px solid #d1d5db;
    min-width: 120px;
    text-align: center;
}

[data-area="instructor"] .navbar-link:hover {
    background-color: #d1d5db;
    color: #111827;
}

[data-area="instructor"] .navbar-link.active {
    background-color: var(--avocado);
    color: white;
    border-color: var(--avocado);
}

/* Menu Buttons */
[data-area="instructor"] .menu-btn {
    display: block;
    width: 100%;
    padding: 0.75rem 1rem;
    text-align: left;
    background: none;
    border: none;
    border-radius: 0.5rem;
    font-size: 1.125rem;
    font-weight: 500;
    color: #374151;
    cursor: pointer;
    transition: all 0.2s;
}

[data-area="instructor"] .menu-btn:hover {
    background-color: #e5e7eb;
    color: #111827;
}

[data-area="instructor"] .menu-btn.active {
    background-color: var(--polynesian);
    color: white;
}

[data-area="instructor"] .menu-icon {
    display: inline-block;
    margin-right: 0.5rem;
    font-size: 1.25rem;
}

/* =================
   Tabs
   ================= */
[data-area="instructor"] .tab-content {
    display: none;
}

[data-area="instructor"] .tab-content.active {
    display: block;
}

/* Tab Buttons (공통) */
[data-area="instructor"] .tab-btn {
    padding: 0.75rem 1.5rem;
    background-color: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: #6b7280;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
}

[data-area="instructor"] .tab-btn:hover {
    background-color: #f3f4f6;
    color: #374151;
}

[data-area="instructor"] .tab-btn.active {
    color: var(--polynesian);
    border-bottom-color: var(--polynesian);
    font-weight: 600;
}

[data-area="instructor"] .fill-tab-nav {
    display: flex;
    background-color: #f3f4f6;
    padding: 0.25rem;
    margin-bottom: 1.5rem;
}

[data-area="instructor"] .fill-tab-btn {
    flex: 1;
    padding: 0.5rem 1rem;
    border-radius: 0.375rem;
    font-size: 1.125rem;
    font-weight: 500;
    color: #6b7280;
    background: none;
    border: none;
    cursor: pointer;
    transition: all 0.2s;
}

[data-area="instructor"] .fill-tab-btn:hover {
    color: #374151;
}

[data-area="instructor"] .fill-tab-btn.active {
    background-color: var(--polynesian);
    color: white;
}

/* =================
   Team Selection
   ================= */
[data-area="instructor"] .team-count-btn {
    padding: 0.75rem 1rem;
    background: white;
    border: 2px solid #d1d5db;
    border-radius: 0.5rem;
    color: #4b5563;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

[data-area="instructor"] .team-count-btn:hover {
    background: #f9fafb;
    border-color: var(--polynesian);
    color: var(--polynesian);
}

[data-area="instructor"] .team-count-btn.active {
    background: var(--polynesian);
    color: white;
    border-color: var(--polynesian);
}

/* =================
   Modal
   ================= */
[data-area="instructor"] .modal {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

[data-area="instructor"] .modal.hidden {
    display: none;
}

[data-area="instructor"] .modal-content {
    background-color: white;
    border-radius: 0.75rem;
    max-width: 32rem;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

[data-area="instructor"] .modal-content.large {
    max-width: 56rem;
}

[data-area="instructor"] .modal-header {
    padding: 1.5rem;
    border-bottom: 1px solid #e5e7eb;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

[data-area="instructor"] .modal-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: #111827;
}

[data-area="instructor"] .modal-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: #9ca3af;
    cursor: pointer;
    padding: 0.25rem;
    line-height: 1;
    transition: color 0.2s;
}

[data-area="instructor"] .modal-close:hover {
    color: #374151;
}

[data-area="instructor"] .modal-body {
    padding: 1.5rem;
}

[data-area="instructor"] .modal-footer {
    padding: 1.5rem;
    border-top: 1px solid #e5e7eb;
    display: flex;
    gap: 0.75rem;
    justify-content: flex-end;
}

/* Loading Spinner */
[data-area="instructor"] .modal .loading-spinner {
    margin: 0 auto 1rem auto;
}

[data-area="instructor"] .loading-spinner {
    border: 4px solid #f3f4f6;
    border-top: 4px solid var(--polynesian);
    border-radius: 50%;
    width: 3rem;
    height: 3rem;
    animation: instructor-spin 1s linear infinite;
}

@keyframes instructor-spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* =================
   Auth Loading State
   ================= */
body[data-area="instructor"].auth-loading {
    overflow: hidden;
}

body[data-area="instructor"].auth-loading > *:not(#authLoadingSpinner) {
    visibility: hidden;
}

body[data-area="instructor"] #authLoadingSpinner {
    position: fixed;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f9fafb;
    z-index: 9999;
}

body[data-area="instructor"]:not(.auth-loading) #authLoadingSpinner {
    display: none;
}

/* Container */
[data-area="instructor"] .container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1rem;
}