/* ===== CSS Variables - Apple Style ===== */
:root {
    /* Light Theme (Default - Apple style) */
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f7;
    --bg-tertiary: #fbfbfd;
    --bg-card: #ffffff;
    --bg-hover: rgba(0, 0, 0, 0.04);

    --text-primary: #1d1d1f;
    --text-secondary: #86868b;
    --text-muted: #a1a1a6;

    --accent-blue: #007aff;
    --accent-green: #34c759;
    --accent-red: #ff3b30;
    --accent-orange: #ff9500;
    --accent-purple: #af52de;

    --border-color: rgba(0, 0, 0, 0.08);
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --border-radius-lg: 18px;

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.12);

    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

    --font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'SF Pro Text', 'Helvetica Neue', sans-serif;
}

/* Dark Theme */
[data-theme="dark"] {
    --bg-primary: #000000;
    --bg-secondary: #1c1c1e;
    --bg-tertiary: #2c2c2e;
    --bg-card: #1c1c1e;
    --bg-hover: rgba(255, 255, 255, 0.06);

    --text-primary: #f5f5f7;
    --text-secondary: #98989d;
    --text-muted: #636366;

    --accent-blue: #0a84ff;
    --accent-green: #30d158;
    --accent-red: #ff453a;
    --accent-orange: #ff9f0a;
    --accent-purple: #bf5af2;

    --border-color: rgba(255, 255, 255, 0.1);

    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 12px 40px rgba(0, 0, 0, 0.5);
}

/* Theme Toggle Button */
.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background: var(--bg-secondary);
    border: none;
    cursor: pointer;
    font-size: 18px;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--bg-hover);
    transform: scale(1.05);
}

.theme-toggle:active {
    transform: scale(0.95);
}

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

body {
    font-family: var(--font-family);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.47059;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

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

/* ===== Header ===== */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 32px;
    background: rgba(255, 255, 255, 0.8);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: saturate(180%) blur(20px);
}

[data-theme="dark"] .header {
    background: rgba(28, 28, 30, 0.8);
}

.logo {
    font-size: 21px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.02em;
}

.header-right {
    display: flex;
    gap: 8px;
    align-items: center;
}

/* ===== Buttons ===== */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 8px 16px;
    border: none;
    border-radius: 980px;
    font-family: inherit;
    font-size: 14px;
    font-weight: 400;
    cursor: pointer;
    transition: all var(--transition-fast);
    white-space: nowrap;
}

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

.btn-primary:hover {
    background: #0051d5;
    transform: translateY(-1px);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

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

.btn-secondary:active {
    transform: scale(0.98);
}

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

.btn-danger:hover {
    opacity: 0.9;
}

.btn-sm {
    padding: 6px 14px;
    font-size: 13px;
}

.btn-icon {
    padding: 6px;
    width: 32px;
    height: 32px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.btn-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 28px;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
}

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

.icon {
    font-size: 16px;
}

/* ===== Main Content ===== */
.main-content {
    display: flex;
    flex: 1;
}

/* ===== Sidebar ===== */
.sidebar {
    width: 220px;
    background: var(--bg-primary);
    border-right: 1px solid var(--border-color);
    padding: 24px 12px;
}

.nav-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 12px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    border-radius: 8px;
}

.nav-item:hover {
    background: var(--bg-hover);
    color: var(--text-primary);
}

.nav-item.active {
    background: var(--bg-secondary);
    color: var(--accent-blue);
    font-weight: 500;
}

.nav-icon {
    font-size: 18px;
    width: 20px;
    text-align: center;
}

.nav-text {
    font-size: 14px;
    font-weight: 400;
}

/* ===== Content Area ===== */
.content {
    flex: 1;
    padding: 40px 48px;
    overflow-y: auto;
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
}

.section {
    animation: fadeIn 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.section.hidden {
    display: none;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
}

.section-header h2 {
    font-size: 32px;
    font-weight: 600;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

/* ===== Cards ===== */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 28px;
    box-shadow: var(--shadow-sm);
}

.provider-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    margin-bottom: 12px;
    overflow: hidden;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

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

.provider-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
    cursor: pointer;
}

.provider-info {
    display: flex;
    align-items: center;
    gap: 14px;
}

.provider-icon {
    width: 44px;
    height: 44px;
    border-radius: 12px;
    background: var(--bg-secondary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 22px;
}

.provider-name {
    font-weight: 600;
    font-size: 17px;
    letter-spacing: -0.01em;
}

.provider-url {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 2px;
}

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

.provider-body {
    padding: 24px;
    background: var(--bg-tertiary);
}

.provider-body.collapsed {
    display: none;
}

/* ===== Model List ===== */
.model-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.model-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 18px;
    background: var(--bg-card);
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    transition: all var(--transition-fast);
}

.model-item:hover {
    background: var(--bg-hover);
}

.model-info {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.model-id {
    font-weight: 500;
    font-family: 'SF Mono', 'Monaco', 'Menlo', monospace;
    font-size: 13px;
    color: var(--text-primary);
}

.model-meta {
    display: flex;
    gap: 12px;
    font-size: 12px;
    color: var(--text-secondary);
}

.model-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    background: var(--bg-secondary);
    color: var(--text-secondary);
    border-radius: 6px;
    font-size: 11px;
    font-weight: 500;
}

.model-actions {
    display: flex;
    gap: 6px;
}

.add-model-btn {
    width: 100%;
    margin-top: 16px;
    padding: 14px;
    background: var(--bg-card);
    border: 1.5px dashed var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 14px;
}

.add-model-btn:hover {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    background: var(--bg-hover);
}

/* ===== Form Elements ===== */
.form-group {
    margin-bottom: 24px;
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 400;
    font-size: 14px;
    color: var(--text-primary);
}

.input,
.select {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-family: inherit;
    font-size: 15px;
    transition: all var(--transition-fast);
}

.input:focus,
.select:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.1);
}

.input::placeholder {
    color: var(--text-muted);
}

.input-group {
    display: flex;
    gap: 8px;
}

.input-group .input {
    flex: 1;
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: 10px;
    cursor: pointer;
    font-size: 15px;
}

.checkbox-label input[type="checkbox"] {
    width: 20px;
    height: 20px;
    accent-color: var(--accent-blue);
    cursor: pointer;
}

/* ===== Fallback Models ===== */
.fallback-models {
    display: flex;
    flex-direction: column;
    gap: 10px;
    margin-bottom: 16px;
}

.fallback-item {
    display: flex;
    align-items: center;
    gap: 10px;
}

.fallback-item .select {
    flex: 1;
}

.fallback-item .btn-icon {
    flex-shrink: 0;
}

/* ===== Channels ===== */
.channel-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    padding: 24px;
    margin-bottom: 12px;
    box-shadow: var(--shadow-sm);
}

.channel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.channel-info {
    display: flex;
    align-items: center;
    gap: 14px;
}

.channel-icon {
    font-size: 26px;
}

.channel-name {
    font-weight: 600;
    font-size: 17px;
    letter-spacing: -0.01em;
}

.channel-status {
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 12px;
    font-weight: 500;
}

.channel-status.enabled {
    background: rgba(52, 199, 89, 0.15);
    color: var(--accent-green);
}

.channel-status.disabled {
    background: rgba(255, 59, 48, 0.15);
    color: var(--accent-red);
}

/* ===== Code Editor ===== */
.code-editor {
    width: 100%;
    min-height: 500px;
    padding: 20px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-family: 'SF Mono', 'Monaco', 'Menlo', monospace;
    font-size: 13px;
    line-height: 1.6;
    resize: vertical;
}

.code-editor:focus {
    outline: none;
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 4px rgba(0, 122, 255, 0.1);
}

/* ===== Modal ===== */
.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    backdrop-filter: blur(20px);
    animation: fadeIn 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] .modal-overlay {
    background: rgba(0, 0, 0, 0.6);
}

.modal-overlay.hidden {
    display: none;
}

.modal {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-lg);
    width: 100%;
    max-width: 480px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: slideUp 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(16px) scale(0.98);
    }

    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 24px 28px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    font-size: 20px;
    font-weight: 600;
    letter-spacing: -0.01em;
}

.modal-body {
    padding: 28px;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
    padding: 20px 28px;
    border-top: 1px solid var(--border-color);
    background: var(--bg-tertiary);
}

/* ===== Toast ===== */
.toast {
    position: fixed;
    bottom: 32px;
    right: 32px;
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 2000;
    backdrop-filter: saturate(180%) blur(20px);
}

.toast.hidden {
    display: none;
}

.toast.success {
    border-left: 3px solid var(--accent-green);
}

.toast.error {
    border-left: 3px solid var(--accent-red);
}

.toast.warning {
    border-left: 3px solid var(--accent-orange);
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(12px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ===== Empty State ===== */
.empty-state {
    text-align: center;
    padding: 80px 20px;
    color: var(--text-secondary);
}

.empty-state-icon {
    font-size: 56px;
    margin-bottom: 20px;
    opacity: 0.6;
}

.empty-state-text {
    font-size: 17px;
    margin-bottom: 28px;
    font-weight: 400;
}

/* ===== Section Actions ===== */
.section-actions {
    display: flex;
    gap: 8px;
    align-items: center;
}

/* ===== Cache Status ===== */
.cache-status {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
    padding: 10px 16px;
    background: var(--bg-secondary);
    border-radius: var(--border-radius-sm);
    font-size: 13px;
    border: 1px solid var(--border-color);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-orange);
}

.cache-status.saved .status-dot {
    background: var(--accent-green);
}

.cache-status.modified .status-dot {
    background: var(--accent-orange);
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.6;
        transform: scale(0.95);
    }
}

/* ===== Commands Section ===== */
.commands-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 24px;
}

.command-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.command-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
    background: var(--bg-card);
    border-bottom: 1px solid var(--border-color);
}

.command-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 500;
    font-size: 15px;
}

.command-title .icon {
    font-size: 18px;
}

.command-body {
    padding: 20px;
    background: var(--bg-tertiary);
}

.command-code {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    padding: 14px 16px;
    font-family: 'SF Mono', 'Monaco', 'Menlo', monospace;
    font-size: 12px;
    line-height: 1.6;
    overflow-x: auto;
    white-space: pre-wrap;
    word-break: break-all;
    color: var(--text-primary);
    position: relative;
}

.command-code::before {
    content: '$ ';
    color: var(--text-secondary);
}

.command-description {
    margin-top: 12px;
    font-size: 13px;
    color: var(--text-secondary);
}

.copy-btn {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-secondary);
    font-size: 12px;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.copy-btn.copied {
    background: rgba(52, 199, 89, 0.15);
    color: var(--accent-green);
    border-color: var(--accent-green);
}

/* ===== Server Connection ===== */
.server-info-banner {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 16px 20px;
    background: rgba(0, 122, 255, 0.08);
    border: 1px solid rgba(0, 122, 255, 0.2);
    border-radius: var(--border-radius);
    margin-bottom: 24px;
    color: var(--accent-blue);
}

.server-info-banner .icon {
    font-size: 24px;
}

.server-commands {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 24px;
}

/* ===== Instructions Card ===== */
.instructions-card {
    margin-top: 40px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.instructions-header {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 20px 24px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
}

.instructions-header .icon {
    font-size: 22px;
}

.instructions-header h3 {
    margin: 0;
    font-size: 17px;
    font-weight: 600;
    color: var(--text-primary);
    letter-spacing: -0.01em;
}

.instructions-content {
    padding: 28px;
}

.instruction-section {
    margin-bottom: 28px;
}

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

.instruction-section h4 {
    margin: 0 0 14px 0;
    font-size: 15px;
    font-weight: 600;
    color: var(--text-primary);
}

.instruction-section ol,
.instruction-section ul {
    margin: 0;
    padding-left: 24px;
    color: var(--text-secondary);
}

.instruction-section li {
    margin-bottom: 10px;
    line-height: 1.6;
}

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

.instruction-section code {
    background: var(--bg-secondary);
    padding: 3px 8px;
    border-radius: 6px;
    font-family: 'SF Mono', 'Monaco', 'Menlo', monospace;
    font-size: 12px;
    color: var(--accent-blue);
}

.instruction-section strong {
    color: var(--text-primary);
    font-weight: 600;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
    .header {
        padding: 12px 20px;
    }

    .main-content {
        flex-direction: column;
    }

    .sidebar {
        width: 100%;
        border-right: none;
        border-bottom: 1px solid var(--border-color);
        padding: 12px;
    }

    .nav-list {
        display: flex;
        overflow-x: auto;
        gap: 4px;
        -webkit-overflow-scrolling: touch;
    }

    .nav-item {
        padding: 10px 16px;
        white-space: nowrap;
        flex-shrink: 0;
    }

    .nav-item.active {
        background: var(--bg-secondary);
    }

    .content {
        padding: 24px 20px;
    }

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

    .modal {
        margin: 20px;
        max-height: calc(100vh - 40px);
        border-radius: var(--border-radius);
    }
}