/* =====================================================
   ポータルサイト — デザインシステム
   ===================================================== */

/* --- CSS Variables --- */
:root {
    --color-bg: #0f0f1a;
    --color-surface: #1a1a2e;
    --color-surface-2: #22223a;
    --color-surface-3: #2a2a44;
    --color-border: #33335a;
    --color-text: #e8e8f0;
    --color-text-secondary: #9898b8;
    --color-text-muted: #6868a0;
    --color-primary: #6c63ff;
    --color-primary-hover: #7b73ff;
    --color-primary-glow: rgba(108, 99, 255, 0.25);
    --color-accent: #00d4aa;
    --color-accent-hover: #00e8bb;
    --color-danger: #ff4c6a;
    --color-danger-hover: #ff6680;
    --color-warning: #ffb84d;
    --color-success: #00d4aa;
    --color-info: #4da6ff;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 20px var(--color-primary-glow);
    --font-sans: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 400ms ease;
}

/* --- Reset & Base --- */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-sans);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--color-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}
a:hover { color: var(--color-primary-hover); }

/* --- Layout --- */
.app {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.container {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

.auth-layout {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 24px;
    background:
        radial-gradient(ellipse at 20% 50%, rgba(108, 99, 255, 0.08) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 20%, rgba(0, 212, 170, 0.06) 0%, transparent 50%),
        var(--color-bg);
}

/* --- Header --- */
.header {
    background: rgba(26, 26, 46, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

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

.logo {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-text);
    display: flex;
    align-items: center;
    gap: 8px;
}

.logo-icon {
    font-size: 1.5rem;
}

.header-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-email {
    font-size: 0.85rem;
    color: var(--color-text-secondary);
}

/* --- Cards --- */
.card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.card-header {
    margin-bottom: 24px;
}

.card-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: 4px;
}

.card-subtitle {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.auth-card {
    width: 100%;
    max-width: 420px;
    padding: 40px;
}

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border: none;
    border-radius: var(--radius-md);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    line-height: 1;
    white-space: nowrap;
}
.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-primary {
    background: var(--color-primary);
    color: #fff;
    box-shadow: var(--shadow-glow);
}
.btn-primary:hover:not(:disabled) {
    background: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: 0 0 30px var(--color-primary-glow);
}

.btn-accent {
    background: var(--color-accent);
    color: #0f0f1a;
}
.btn-accent:hover:not(:disabled) {
    background: var(--color-accent-hover);
    transform: translateY(-1px);
}

.btn-danger {
    background: var(--color-danger);
    color: #fff;
}
.btn-danger:hover:not(:disabled) {
    background: var(--color-danger-hover);
    transform: translateY(-1px);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}
.btn-ghost:hover:not(:disabled) {
    background: var(--color-surface-2);
    color: var(--color-text);
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.8125rem;
}

.btn-block {
    width: 100%;
}

.btn-icon {
    padding: 8px;
    min-width: 36px;
    min-height: 36px;
}

/* --- Form Elements --- */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.form-input {
    width: 100%;
    padding: 12px 16px;
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    outline: none;
}
.form-input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px var(--color-primary-glow);
}
.form-input::placeholder {
    color: var(--color-text-muted);
}

.form-input-key {
    font-family: var(--font-mono);
    font-size: 1.125rem;
    letter-spacing: 0.1em;
    text-align: center;
    text-transform: uppercase;
}

.form-hint {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

.form-error {
    font-size: 0.8125rem;
    color: var(--color-danger);
    margin-top: 6px;
    display: none;
}
.form-error.visible {
    display: block;
}

select.form-input {
    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 d='M6 8L1 3h10z' fill='%239898b8'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

/* --- Badges --- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 4px 10px;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.badge-primary { background: rgba(108, 99, 255, 0.15); color: var(--color-primary); }
.badge-success { background: rgba(0, 212, 170, 0.15); color: var(--color-accent); }
.badge-danger { background: rgba(255, 76, 106, 0.15); color: var(--color-danger); }
.badge-warning { background: rgba(255, 184, 77, 0.15); color: var(--color-warning); }
.badge-info { background: rgba(77, 166, 255, 0.15); color: var(--color-info); }

/* --- Stats --- */
.stat-row {
    display: flex;
    gap: 16px;
    margin-bottom: 24px;
}

.stat-box {
    flex: 1;
    background: var(--color-surface-2);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    text-align: center;
}

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--color-text);
    line-height: 1.2;
}

.stat-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-top: 4px;
}

/* --- Tables --- */
.table-wrap {
    overflow-x: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--color-border);
}

th {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--color-surface-2);
}

td {
    font-size: 0.875rem;
}

tr:last-child td { border-bottom: none; }

tr:hover td {
    background: rgba(108, 99, 255, 0.03);
}

/* --- Key Display --- */
.key-display {
    font-family: var(--font-mono);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-accent);
    background: var(--color-surface-3);
    padding: 12px 20px;
    border-radius: var(--radius-sm);
    border: 1px dashed var(--color-border);
    text-align: center;
    letter-spacing: 0.15em;
    cursor: pointer;
    transition: background var(--transition-fast);
    position: relative;
}
.key-display:hover {
    background: var(--color-surface-2);
}
.key-display::after {
    content: '📋 クリックでコピー';
    position: absolute;
    bottom: -22px;
    left: 50%;
    transform: translateX(-50%);
    font-family: var(--font-sans);
    font-size: 0.625rem;
    color: var(--color-text-muted);
    letter-spacing: 0;
    font-weight: 400;
}

/* --- Alerts --- */
.alert {
    padding: 14px 18px;
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    margin-bottom: 16px;
    display: none;
}
.alert.visible { display: block; }
.alert-success {
    background: rgba(0, 212, 170, 0.1);
    border: 1px solid rgba(0, 212, 170, 0.3);
    color: var(--color-accent);
}
.alert-error {
    background: rgba(255, 76, 106, 0.1);
    border: 1px solid rgba(255, 76, 106, 0.3);
    color: var(--color-danger);
}
.alert-info {
    background: rgba(77, 166, 255, 0.1);
    border: 1px solid rgba(77, 166, 255, 0.3);
    color: var(--color-info);
}

/* --- Modal --- */
.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    padding: 24px;
}
.modal-overlay.visible {
    display: flex;
    animation: fadeIn var(--transition-fast);
}

.modal {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px;
    max-width: 480px;
    width: 100%;
    box-shadow: var(--shadow-lg);
    animation: slideUp var(--transition-base);
}

.modal-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 12px;
}

.modal-actions {
    display: flex;
    gap: 12px;
    justify-content: flex-end;
    margin-top: 24px;
}

/* --- Empty State --- */
.empty-state {
    text-align: center;
    padding: 48px 24px;
    color: var(--color-text-muted);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 16px;
    opacity: 0.5;
}

.empty-state-text {
    font-size: 0.9375rem;
    margin-bottom: 16px;
}

/* --- Tabs --- */
.tabs {
    display: flex;
    gap: 4px;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: 24px;
}

.tab {
    padding: 10px 20px;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-muted);
    cursor: pointer;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
    font-family: var(--font-sans);
}
.tab:hover { color: var(--color-text-secondary); }
.tab.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

/* --- Section --- */
.section {
    padding: 32px 0;
}

.section-title {
    font-size: 1.125rem;
    font-weight: 700;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* --- Group Card --- */
.group-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 16px;
}

.group-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 20px;
    cursor: pointer;
    transition: all var(--transition-base);
    text-decoration: none;
    color: inherit;
    display: block;
}
.group-card:hover {
    border-color: var(--color-primary);
    box-shadow: var(--shadow-glow);
    transform: translateY(-2px);
    color: inherit;
}

.group-card-name {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 8px;
}

.group-card-meta {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    gap: 16px;
}

/* --- Progress Bar --- */
.progress {
    height: 6px;
    background: var(--color-surface-3);
    border-radius: 999px;
    overflow: hidden;
    margin-top: 12px;
}

.progress-bar {
    height: 100%;
    border-radius: 999px;
    background: var(--color-primary);
    transition: width var(--transition-slow);
}
.progress-bar.warning { background: var(--color-warning); }
.progress-bar.danger { background: var(--color-danger); }

/* --- Divider --- */
.divider {
    display: flex;
    align-items: center;
    gap: 16px;
    margin: 20px 0;
    color: var(--color-text-muted);
    font-size: 0.8125rem;
}
.divider::before, .divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

/* --- Animations --- */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(16px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.loading { animation: pulse 1.5s ease-in-out infinite; }

/* --- Spinner --- */
.spinner {
    width: 20px;
    height: 20px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
    display: inline-block;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* --- Responsive --- */
@media (max-width: 640px) {
    .container { padding: 0 16px; }
    .card { padding: 20px; }
    .auth-card { padding: 28px; }
    .stat-row { flex-direction: column; }
    .group-grid { grid-template-columns: 1fr; }
    .header-actions .user-email { display: none; }
}