* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--c-background);
    color: var(--c-font);
    min-height: 100dvh;
    -webkit-font-smoothing: antialiased;
    font-size: 16px;
}

.page-header {
    background: var(--c-block);
    padding: 14px 18px;
    display: flex;
    align-items: center;
    gap: 14px;
    border-bottom: 1px solid var(--c-border);
    position: sticky;
    top: 0;
    z-index: 10;
}

.back-btn {
    background: transparent;
    border: none;
    color: var(--c-primary);
    font-size: 26px;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    flex-shrink: 0;
}

.back-btn:hover {
    background: var(--c-border);
}

.page-header h1 {
    font-size: 19px;
    font-weight: 600;
}

.page-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.usage-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

.model-card {
    background: var(--c-block);
    border: 1px solid var(--c-border);
    border-radius: 14px;
    padding: 20px;
    cursor: pointer;
    transition: all 0.2s;
}

.model-card:hover {
    border-color: var(--c-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.tab-bar {
    display: flex;
    gap: 8px;
    margin-bottom: 16px;
    border-bottom: 1px solid var(--c-border);
    padding-bottom: 8px;
}

.tab-item {
    padding: 8px 20px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    color: var(--c-font-secondary);
    transition: all 0.2s;
}

.tab-item:hover {
    background: var(--c-border);
}

.tab-item.active {
    background: var(--c-primary);
    color: white;
}

.model-card:hover {
    border-color: var(--c-primary);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}

.model-card-header {
    margin-bottom: 12px;
}

.model-card-title {
    font-size: 17px;
    font-weight: 600;
    color: var(--c-font);
    margin-bottom: 4px;
}

.model-card-subtitle {
    font-size: 13px;
    color: var(--c-font-secondary);
}

.model-card-status {
    display: inline-block;
    font-size: 13px;
    padding: 4px 10px;
    border-radius: 6px;
    font-weight: 600;
    margin-bottom: 14px;
}

.model-card-status.status-ok {
    background: color-mix(in srgb, var(--c-success) 15%, transparent);
    color: var(--c-success);
}

.model-card-status.status-warning {
    background: color-mix(in srgb, var(--c-warning) 15%, transparent);
    color: var(--c-warning);
}

.model-card-status.status-danger {
    background: color-mix(in srgb, var(--c-danger) 15%, transparent);
    color: var(--c-danger);
}

.model-card-status.status-idle {
    background: color-mix(in srgb, var(--c-font-secondary, #888) 15%, transparent);
    color: var(--c-font-secondary, #888);
}

.model-card-bars {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 14px;
}

.mini-bar {
    display: flex;
    align-items: center;
    gap: 10px;
}

.mini-bar-label {
    font-size: 13px;
    color: var(--c-font-secondary);
    width: 36px;
    flex-shrink: 0;
}

.mini-bar-track {
    flex: 1;
    height: 10px;
    background: var(--c-border);
    border-radius: 5px;
    overflow: hidden;
}

.mini-bar-fill {
    height: 100%;
    border-radius: 5px;
    transition: width 0.5s ease;
}

.mini-bar-value {
    font-size: 14px;
    font-weight: 600;
    color: var(--c-font);
    width: 60px;
    text-align: right;
    flex-shrink: 0;
}

.model-card-reset {
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding-top: 12px;
    border-top: 1px solid var(--c-border);
}

.reset-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 14px;
}

.reset-label {
    color: var(--c-font-secondary);
}

.reset-value {
    color: var(--c-font);
    font-weight: 600;
}

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 2000;
    padding: 20px;
}

.modal-overlay.show {
    opacity: 1;
    pointer-events: auto;
}

.detail-modal {
    background: var(--c-block);
    border-radius: 16px;
    width: 100%;
    max-width: 560px;
    max-height: 90vh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transform: scale(0.95);
    transition: transform 0.3s ease;
}

.modal-overlay.show .detail-modal {
    transform: scale(1);
}

.detail-modal-header {
    padding: 18px 20px;
    border-bottom: 1px solid var(--c-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-shrink: 0;
}

.detail-modal-header h2 {
    font-size: 18px;
    font-weight: 600;
    margin: 0;
}

.detail-modal-close {
    background: transparent;
    border: none;
    color: var(--c-font-secondary);
    font-size: 24px;
    cursor: pointer;
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
}

.detail-modal-close:hover {
    background: var(--c-border);
}

.detail-modal-body {
    padding: 20px;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
}

.detail-section {
    margin-bottom: 20px;
}

.detail-section:last-child {
    margin-bottom: 0;
}

.detail-section-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--c-font);
    margin-bottom: 12px;
}

.detail-progress {
    margin-bottom: 12px;
}

.detail-progress-bar {
    height: 12px;
    background: var(--c-border);
    border-radius: 6px;
    overflow: hidden;
    margin-bottom: 8px;
}

.detail-progress-fill {
    height: 100%;
    border-radius: 6px;
    transition: width 0.5s ease;
}

.detail-progress-info {
    display: flex;
    justify-content: space-between;
    font-size: 14px;
    color: var(--c-font-secondary);
}

.detail-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 10px;
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 4px;
    font-size: 14px;
}

.detail-label {
    color: var(--c-font-secondary);
    font-size: 13px;
}

.detail-value {
    color: var(--c-font);
    font-weight: 600;
}

.loading-state {
    text-align: center;
    padding: 80px 20px;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--c-border);
    border-top-color: var(--c-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

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

.loading-text {
    font-size: 16px;
    color: var(--c-font-secondary);
}

.error-box {
    background: color-mix(in srgb, var(--c-danger) 10%, transparent);
    border: 1px solid var(--c-danger);
    border-radius: 10px;
    padding: 18px;
}

.error-title {
    font-size: 16px;
    font-weight: 600;
    color: var(--c-danger);
    margin-bottom: 6px;
}

.error-msg {
    font-size: 15px;
    color: var(--c-font);
}

.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-state-icon {
    font-size: 56px;
    margin-bottom: 16px;
}

.empty-state h3 {
    font-size: 18px;
    margin-bottom: 8px;
    color: var(--c-font);
}

.empty-state p {
    font-size: 15px;
    color: var(--c-font-secondary);
}

.toast {
    position: fixed;
    top: 20px;
    left: 50%;
    transform: translateX(-50%) translateY(-100px);
    background: var(--c-success);
    color: white;
    padding: 12px 28px;
    border-radius: 10px;
    font-size: 15px;
    font-weight: 600;
    z-index: 100;
    transition: transform 0.3s;
}

.toast.show {
    transform: translateX(-50%) translateY(0);
}

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

body.modal-mode {
    min-height: 100%;
    display: flex;
    flex-direction: column;
}

body.modal-mode .page-content {
    padding-top: 0;
    flex: 1;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
}

@media (max-width: 768px) {
    .usage-grid {
        grid-template-columns: 1fr;
    }

    .page-content {
        padding: 14px;
    }

    .model-card {
        padding: 16px;
    }

    .detail-row {
        grid-template-columns: 1fr;
    }

    .modal-overlay {
        padding: 0;
        align-items: flex-end;
    }

    .detail-modal {
        max-height: 85vh;
        border-radius: 16px 16px 0 0;
    }
}