/**
 * Layout Styles - 布局樣式
 * Two-Column Layout: 左側導航 + 右側內容
 */

/* ==================== Main Layout ==================== */
.app-container {
    display: flex;
    min-height: 100vh;
    background: var(--bg);
}

/* ==================== Sidebar (左側導航欄) ==================== */
.sidebar {
    width: 240px;
    min-width: 240px;
    background: linear-gradient(180deg, #1a1f2e 0%, #2d3748 100%);
    display: flex;
    flex-direction: column;
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 100;
    box-shadow: 4px 0 20px rgba(0, 0, 0, 0.15);
}

/* ==================== User Info (側邊欄頂部) ==================== */
.user-info-bar {
    padding: 20px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
    color: #ffffff;
}

.user-avatar {
    width: 44px;
    height: 44px;
    border-radius: 10px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    font-size: 1.1rem;
    color: white;
}

.user-details {
    display: flex;
    flex-direction: column;
    flex: 1;
    overflow: hidden;
}

.user-name {
    font-weight: 600;
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-role {
    font-size: 0.75rem;
    opacity: 0.7;
    color: #a0aec0;
}

.logout-btn {
    width: 100%;
    padding: 10px 16px;
    border: 1px solid rgba(255, 255, 255, 0.15);
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    color: #e2e8f0;
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    transition: all 0.2s ease;
}

.logout-btn:hover {
    background: rgba(239, 68, 68, 0.2);
    border-color: rgba(239, 68, 68, 0.4);
    color: #fca5a5;
}

.logout-btn svg {
    width: 16px;
    height: 16px;
    fill: currentColor;
}

/* ==================== Module Selector (垂直導航選單) ==================== */
.module-selector {
    display: flex;
    flex-direction: column;
    padding: 16px 12px;
    gap: 6px;
    flex: 1;
    overflow-y: auto;
}

.module-btn {
    width: 100%;
    padding: 12px 14px;
    border: none;
    border-radius: 8px;
    background: transparent;
    font-family: inherit;
    font-size: 0.875rem;
    font-weight: 500;
    color: #a0aec0;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.2s ease;
    text-align: left;
}

.module-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    color: #e2e8f0;
}

.module-btn.active {
    background: linear-gradient(135deg, var(--module-position) 0%, var(--module-position-dark) 100%);
    color: white;
    box-shadow: 0 4px 12px var(--module-position-shadow);
}

.module-btn.active.job-active {
    background: linear-gradient(135deg, var(--module-job) 0%, var(--module-job-dark) 100%);
    box-shadow: 0 4px 12px var(--module-job-shadow);
}

.module-btn.active.deptfunc-active {
    background: linear-gradient(135deg, var(--module-deptfunc) 0%, var(--module-deptfunc-dark) 100%);
    box-shadow: 0 4px 12px var(--module-deptfunc-shadow);
}

.module-btn.active.desc-active {
    background: linear-gradient(135deg, var(--module-desc) 0%, var(--module-desc-dark) 100%);
    box-shadow: 0 4px 12px var(--module-desc-shadow);
}

.module-btn.active.list-active {
    background: linear-gradient(135deg, var(--module-list) 0%, var(--module-list-dark) 100%);
    box-shadow: 0 4px 12px var(--module-list-shadow);
}

.module-btn.active.admin-active {
    background: linear-gradient(135deg, var(--module-admin) 0%, var(--module-admin-dark) 100%);
    box-shadow: 0 4px 12px var(--module-admin-shadow);
}

.module-btn svg {
    width: 20px;
    height: 20px;
    fill: currentColor;
    flex-shrink: 0;
}

/* ==================== Main Content (右側內容區) ==================== */
.main-content {
    flex: 1;
    margin-left: 240px;
    padding: 24px 32px;
    min-height: 100vh;
    background: var(--bg);
}

.module-content {
    display: none;
}

.module-content.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

/* ==================== App Header ==================== */
.app-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 24px;
    padding: 20px 28px;
    background: linear-gradient(135deg, var(--module-position) 0%, var(--module-position-dark) 100%);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
}

.app-header.job-header {
    background: linear-gradient(135deg, var(--module-job) 0%, var(--module-job-dark) 100%);
}

.app-header.deptfunc-header {
    background: linear-gradient(135deg, var(--module-deptfunc) 0%, var(--module-deptfunc-dark) 100%);
}

.app-header.desc-header {
    background: linear-gradient(135deg, var(--module-desc) 0%, var(--module-desc-dark) 100%);
}

.app-header.list-header {
    background: linear-gradient(135deg, var(--module-list) 0%, var(--module-list-dark) 100%);
}

.app-header.admin-header {
    background: linear-gradient(135deg, var(--module-admin) 0%, var(--module-admin-dark) 100%);
}

.app-header .icon {
    width: 48px;
    height: 48px;
    background: rgba(255, 255, 255, 0.15);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
}

.app-header .icon svg {
    width: 28px;
    height: 28px;
    fill: #ffffff;
}

.app-header h1 {
    color: #ffffff;
    font-size: 1.5rem;
    font-weight: 600;
}

.app-header .subtitle {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.875rem;
    margin-top: 2px;
}

/* ==================== Form Card ==================== */
.form-card {
    background: var(--bg-card);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    overflow: hidden;
}

/* ==================== Sections ==================== */
.section-box {
    background: #f8fafc;
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 20px;
}

.section-header {
    padding: 12px 16px;
    background: linear-gradient(135deg, #e8f4fc 0%, #f0f4f8 100%);
    border-bottom: 1px solid var(--border);
    font-weight: 600;
    font-size: 0.9rem;
    color: var(--primary);
}

.section-header.green {
    background: linear-gradient(135deg, #e8f8f0 0%, #f0f8f4 100%);
    color: var(--green-dark);
}

.section-body {
    padding: 20px;
}

.section-divider {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 8px 0;
}

.section-divider span {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--primary);
    white-space: nowrap;
}

.section-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: linear-gradient(to right, var(--border), transparent);
}

/* ==================== Sidebar Footer ==================== */
.sidebar-footer {
    padding: 16px;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    font-size: 0.75rem;
    color: #64748b;
    text-align: center;
}

/* ==================== Responsive Design ==================== */

/* Large Tablets & Small Desktops (1024px) */
@media (max-width: 1024px) {
    .sidebar {
        width: 200px;
        min-width: 200px;
    }

    .main-content {
        margin-left: 200px;
        padding: 20px 24px;
    }

    .app-header {
        padding: 16px 20px;
    }

    .app-header h1 {
        font-size: 1.3rem;
    }
}

/* Tablets (768px) */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }

    .sidebar {
        position: relative;
        width: 100%;
        min-width: 100%;
        flex-direction: row;
        flex-wrap: wrap;
        padding: 12px;
        box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
    }

    .user-info-bar {
        width: 100%;
        flex-direction: row;
        justify-content: space-between;
        align-items: center;
        padding: 12px;
        border-bottom: none;
    }

    .user-info {
        flex: 1;
    }

    .logout-btn {
        width: auto;
        padding: 8px 16px;
    }

    .module-selector {
        width: 100%;
        flex-direction: row;
        flex-wrap: wrap;
        padding: 8px 0;
        gap: 8px;
        overflow-x: auto;
    }

    .module-btn {
        flex: 1;
        min-width: calc(33.33% - 8px);
        padding: 10px;
        justify-content: center;
        font-size: 0.75rem;
    }

    .module-btn span {
        display: none;
    }

    .main-content {
        margin-left: 0;
        padding: 16px;
    }

    .app-header {
        padding: 16px;
        margin-bottom: 16px;
        flex-wrap: wrap;
    }

    .app-header .icon {
        width: 40px;
        height: 40px;
    }

    .app-header .icon svg {
        width: 22px;
        height: 22px;
    }

    .app-header h1 {
        font-size: 1.1rem;
    }

    .app-header .subtitle {
        display: none;
    }

    .sidebar-footer {
        display: none;
    }

    .section-body {
        padding: 16px;
    }
}

/* Mobile Phones (480px) */
@media (max-width: 480px) {
    .sidebar {
        padding: 8px;
    }

    .user-info-bar {
        padding: 8px;
        gap: 8px;
    }

    .user-avatar {
        width: 36px;
        height: 36px;
        font-size: 0.9rem;
    }

    .user-name {
        font-size: 0.85rem;
    }

    .user-role {
        font-size: 0.7rem;
    }

    .logout-btn {
        padding: 6px 12px;
        font-size: 0.8rem;
    }

    .logout-btn span {
        display: none;
    }

    .module-selector {
        gap: 6px;
    }

    .module-btn {
        min-width: calc(50% - 6px);
        padding: 8px;
    }

    .module-btn svg {
        width: 18px;
        height: 18px;
    }

    .main-content {
        padding: 12px;
    }

    .app-header {
        padding: 12px;
        gap: 12px;
    }

    .app-header .icon {
        width: 36px;
        height: 36px;
        border-radius: 8px;
    }

    .app-header .icon svg {
        width: 20px;
        height: 20px;
    }

    .app-header h1 {
        font-size: 1rem;
    }

    .section-box {
        margin-bottom: 12px;
    }

    .section-header {
        padding: 10px 12px;
        font-size: 0.85rem;
    }

    .section-body {
        padding: 12px;
    }
}