/* ===== CSS Variables ===== */
:root {
    --bg-primary: #0a0a0a;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2a2a2a;
    --bg-card: #1e1e1e;
    --bg-hover: #252525;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --text-tertiary: #808080;
    --border-color: #333333;
    --accent-primary: #6366f1;
    --accent-hover: #5558e3;
    --success: #10b981;
    --warning: #f59e0b;
    --danger: #ef4444;
    --status-available: #10b981;
    --status-busy: #ef4444;
    --status-away: #f59e0b;
    --status-offline: #6b7280;
    --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.5);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Global Reset ===== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

/* ===== Container ===== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ===== Header ===== */
.header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    padding: 20px 0;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
    gap: 15px;
}

.logo i {
    font-size: 32px;
    color: var(--accent-primary);
}

.logo h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--text-primary);
}

/* ===== Buttons ===== */
.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background-color: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

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

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

.btn-danger {
    background-color: var(--danger);
    color: white;
}

.btn-danger:hover {
    background-color: #dc2626;
}

.btn-small {
    padding: 8px 16px;
    font-size: 13px;
}

/* ===== Main Content ===== */
.main-content {
    padding: 40px 0;
}

/* ===== Search Section ===== */
.search-section {
    background-color: var(--bg-card);
    padding: 24px;
    border-radius: 12px;
    margin-bottom: 32px;
    box-shadow: var(--shadow-sm);
}

.search-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    background-color: var(--bg-secondary);
    padding: 12px 20px;
    border-radius: 8px;
    margin-bottom: 16px;
    border: 1px solid var(--border-color);
}

.search-bar i {
    color: var(--text-tertiary);
    font-size: 18px;
}

.search-bar input {
    flex: 1;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-primary);
    font-size: 15px;
}

.search-bar input::placeholder {
    color: var(--text-tertiary);
}

.filter-controls {
    display: flex;
    gap: 12px;
    flex-wrap: wrap;
}

.filter-select {
    padding: 10px 16px;
    background-color: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    font-size: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.filter-select:hover {
    border-color: var(--accent-primary);
}

/* ===== Members Section ===== */
.members-section {
    margin-bottom: 40px;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 24px;
}

.section-header h2 {
    font-size: 28px;
    font-weight: 700;
}

.view-toggle {
    display: flex;
    gap: 8px;
}

.view-btn {
    padding: 10px 16px;
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: 8px;
    transition: var(--transition);
}

.view-btn:hover,
.view-btn.active {
    background-color: var(--accent-primary);
    color: white;
    border-color: var(--accent-primary);
}

/* ===== Members Grid ===== */
.members-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.members-grid.list-view {
    grid-template-columns: 1fr;
}

.member-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 24px;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.member-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--accent-primary), #8b5cf6);
    opacity: 0;
    transition: var(--transition);
}

.member-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-primary);
}

.member-card:hover::before {
    opacity: 1;
}

.member-header {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-bottom: 16px;
}

.member-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
    font-weight: 700;
    color: white;
    position: relative;
    flex-shrink: 0;
}

.status-indicator {
    position: absolute;
    bottom: 2px;
    right: 2px;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    border: 2px solid var(--bg-card);
}

.status-available { background-color: var(--status-available); }
.status-busy { background-color: var(--status-busy); }
.status-away { background-color: var(--status-away); }
.status-offline { background-color: var(--status-offline); }

.member-info {
    flex: 1;
}

.member-name {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 4px;
}

.member-name-ja {
    font-size: 13px;
    color: var(--text-secondary);
    margin-left: 8px;
}

.member-position {
    font-size: 14px;
    color: var(--text-secondary);
}

.member-department {
    font-size: 13px;
    color: var(--text-tertiary);
}

.member-contact {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
    font-size: 13px;
}

.contact-item {
    display: flex;
    align-items: center;
    gap: 8px;
    color: var(--text-secondary);
}

.contact-item i {
    color: var(--accent-primary);
    width: 16px;
}

.member-bio {
    font-size: 14px;
    color: var(--text-secondary);
    margin-bottom: 16px;
    line-height: 1.5;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.member-skills {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.skill-tag {
    padding: 6px 12px;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-size: 12px;
    color: var(--text-secondary);
    display: flex;
    align-items: center;
    gap: 6px;
}

.skill-level {
    display: inline-flex;
    gap: 2px;
}

.skill-level-dot {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--text-tertiary);
}

.skill-level-dot.filled {
    background-color: var(--accent-primary);
}

/* ===== Modal ===== */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.85);
    z-index: 1000;
    overflow-y: auto;
    padding: 20px;
}

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

.modal-content {
    background-color: var(--bg-secondary);
    border-radius: 16px;
    width: 100%;
    max-width: 900px;
    box-shadow: var(--shadow-lg);
    animation: modalSlideIn 0.3s ease-out;
}

.modal-small {
    max-width: 500px;
}

@keyframes modalSlideIn {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 24px;
    font-weight: 700;
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: var(--transition);
}

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

.modal-body {
    padding: 24px;
    max-height: 70vh;
    overflow-y: auto;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 12px;
    padding: 20px 24px;
    border-top: 1px solid var(--border-color);
}

/* ===== Form ===== */
.form-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 20px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group.full-width {
    grid-column: 1 / -1;
}

.form-group label {
    font-size: 14px;
    font-weight: 600;
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px;
    background-color: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group input[type="color"] {
    height: 50px;
    cursor: pointer;
}

.form-group input[type="range"] {
    margin-top: 8px;
}

.level-display {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 8px;
}

#levelValue {
    font-size: 24px;
    font-weight: 700;
    color: var(--accent-primary);
}

.level-labels {
    display: flex;
    gap: 60px;
}

.level-labels small {
    color: var(--text-tertiary);
}

/* ===== Skills Section ===== */
.skills-section {
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.skills-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.skills-header h3 {
    font-size: 18px;
    font-weight: 700;
}

.skills-list {
    display: grid;
    gap: 12px;
}

.skill-item {
    background-color: var(--bg-tertiary);
    padding: 16px;
    border-radius: 8px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.skill-item:hover {
    border-color: var(--accent-primary);
    background-color: var(--bg-hover);
}

.skill-item-info {
    flex: 1;
}

.skill-item-name {
    font-size: 15px;
    font-weight: 600;
    margin-bottom: 4px;
}

.skill-item-meta {
    display: flex;
    gap: 16px;
    font-size: 13px;
    color: var(--text-secondary);
}

.skill-item-actions {
    display: flex;
    gap: 8px;
}

.icon-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 8px;
    border-radius: 6px;
    transition: var(--transition);
}

.icon-btn:hover {
    background-color: var(--bg-secondary);
    color: var(--accent-primary);
}

/* ===== Chart Section ===== */
.chart-section {
    margin-top: 32px;
    padding-top: 32px;
    border-top: 1px solid var(--border-color);
}

.chart-section h3 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
}

/* ===== Loading Spinner ===== */
.loading-spinner {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--bg-tertiary);
    border-top-color: var(--accent-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 64px;
    color: var(--text-tertiary);
    margin-bottom: 20px;
}

.empty-state h3 {
    font-size: 20px;
    margin-bottom: 8px;
    color: var(--text-primary);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .header-content {
        flex-direction: column;
        gap: 16px;
    }

    .logo {
        width: 100%;
        justify-content: center;
    }

    .members-grid {
        grid-template-columns: 1fr;
    }

    .form-grid {
        grid-template-columns: 1fr;
    }

    .filter-controls {
        flex-direction: column;
    }

    .filter-select {
        width: 100%;
    }

    .modal-content {
        margin: 0;
        max-width: 100%;
    }
}

@media (max-width: 480px) {
    .logo h1 {
        font-size: 18px;
    }

    .section-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 16px;
    }
}

/* ===== Scrollbar Styling ===== */
::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--bg-tertiary);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}