/* Log Upload System — Professional Engineering Workbench Design System */

:root,
[data-theme="light"] {
    /* Color Palette — Slate & Modern Indigo / Steel Accents */
    --color-bg: #0f172a08;
    --color-bg-base: #f8fafc;
    --color-bg-pattern: #e2e8f0;
    --color-header-bg: rgba(255, 255, 255, 0.92);
    --color-surface: #ffffff;
    --color-surface-muted: #f1f5f9;
    --color-surface-elevated: #ffffff;
    --color-surface-hover: #fafbff;
    
    --color-border: #e2e8f0;
    --color-border-strong: #cbd5e1;
    --color-border-focus: #6366f1;

    --color-text: #0f172a;
    --color-text-secondary: #475569;
    --color-text-muted: #94a3b8;

    /* Primary Brand Accents */
    --color-accent: #4f46e5;
    --color-accent-hover: #4338ca;
    --color-accent-soft: #eef2ff;
    --color-accent-muted: #c7d2fe;

    /* Semantic Status Colors */
    --color-success: #059669;
    --color-success-bg: #ecfdf5;
    --color-success-border: #a7f3d0;
    
    --color-error: #e11d48;
    --color-error-bg: #fff1f2;
    --color-error-border: #fecdd3;
    
    --color-warning: #d97706;
    --color-warning-bg: #fffbeb;
    --color-warning-border: #fde68a;
    --color-warning-text: #92400e;

    --color-info: #0284c7;
    --color-info-bg: #f0f9ff;
    --color-info-border: #bae6fd;
    
    --color-danger: #e11d48;
    --color-danger-hover: #be123c;

    --color-overlay: rgba(15, 23, 42, 0.65);
    --color-confirm-overlay: rgba(15, 23, 42, 0.5);

    --color-skeleton-start: #f1f5f9;
    --color-skeleton-mid: #e2e8f0;

    /* Radii & Shadows */
    --radius-xs: 4px;
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 18px;

    --shadow-xs: 0 1px 2px rgba(15, 23, 42, 0.04);
    --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.06), 0 1px 2px rgba(15, 23, 42, 0.04);
    --shadow-md: 0 4px 12px -2px rgba(15, 23, 42, 0.08), 0 2px 6px -2px rgba(15, 23, 42, 0.04);
    --shadow-lg: 0 12px 32px -4px rgba(15, 23, 42, 0.12), 0 4px 12px -2px rgba(15, 23, 42, 0.06);
    --shadow-accent: 0 4px 14px rgba(79, 70, 229, 0.25);

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: "SF Mono", "Cascadia Code", "JetBrains Mono", Consolas, "Courier New", monospace;

    --header-height: 60px;
    --transition: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="dark"] {
    /* Color Palette — Deep Slate Dark Mode */
    --color-bg: rgba(0, 0, 0, 0.45);
    --color-bg-base: #0b0f19;
    --color-bg-pattern: #1e293b;
    --color-header-bg: rgba(15, 23, 42, 0.88);
    --color-surface: #131b2e;
    --color-surface-muted: #1e293b;
    --color-surface-elevated: #243048;
    --color-surface-hover: #1e2a44;
    
    --color-border: #26334d;
    --color-border-strong: #3b4d6e;
    --color-border-focus: #818cf8;

    --color-text: #f1f5f9;
    --color-text-secondary: #94a3b8;
    --color-text-muted: #64748b;

    /* Primary Brand Accents in Dark */
    --color-accent: #6366f1;
    --color-accent-hover: #818cf8;
    --color-accent-soft: rgba(99, 102, 241, 0.18);
    --color-accent-muted: rgba(99, 102, 241, 0.38);

    /* Semantic Status Colors in Dark */
    --color-success: #10b981;
    --color-success-bg: rgba(16, 185, 129, 0.15);
    --color-success-border: rgba(16, 185, 129, 0.3);
    
    --color-error: #f43f5e;
    --color-error-bg: rgba(244, 63, 94, 0.15);
    --color-error-border: rgba(244, 63, 94, 0.3);
    
    --color-warning: #f59e0b;
    --color-warning-bg: rgba(245, 158, 11, 0.15);
    --color-warning-border: rgba(245, 158, 11, 0.3);
    --color-warning-text: #fcd34d;

    --color-info: #38bdf8;
    --color-info-bg: rgba(56, 189, 248, 0.15);
    --color-info-border: rgba(56, 189, 248, 0.3);
    
    --color-danger: #f43f5e;
    --color-danger-hover: #e11d48;

    --color-overlay: rgba(3, 7, 18, 0.78);
    --color-confirm-overlay: rgba(3, 7, 18, 0.7);

    --color-skeleton-start: #1e293b;
    --color-skeleton-mid: #334155;

    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px -2px rgba(0, 0, 0, 0.5), 0 2px 6px -2px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 12px 32px -4px rgba(0, 0, 0, 0.6), 0 4px 12px -2px rgba(0, 0, 0, 0.4);
    --shadow-accent: 0 4px 14px rgba(99, 102, 241, 0.35);
}

/* Fallback for auto mode before JS loads */
@media (prefers-color-scheme: dark) {
    :root:not([data-theme="light"]) {
        --color-bg: rgba(0, 0, 0, 0.45);
        --color-bg-base: #0b0f19;
        --color-bg-pattern: #1e293b;
        --color-header-bg: rgba(15, 23, 42, 0.88);
        --color-surface: #131b2e;
        --color-surface-muted: #1e293b;
        --color-surface-elevated: #243048;
        --color-surface-hover: #1e2a44;
        
        --color-border: #26334d;
        --color-border-strong: #3b4d6e;
        --color-border-focus: #818cf8;

        --color-text: #f1f5f9;
        --color-text-secondary: #94a3b8;
        --color-text-muted: #64748b;

        --color-accent: #6366f1;
        --color-accent-hover: #818cf8;
        --color-accent-soft: rgba(99, 102, 241, 0.18);
        --color-accent-muted: rgba(99, 102, 241, 0.38);

        --color-success: #10b981;
        --color-success-bg: rgba(16, 185, 129, 0.15);
        --color-success-border: rgba(16, 185, 129, 0.3);
        
        --color-error: #f43f5e;
        --color-error-bg: rgba(244, 63, 94, 0.15);
        --color-error-border: rgba(244, 63, 94, 0.3);
        
        --color-warning: #f59e0b;
        --color-warning-bg: rgba(245, 158, 11, 0.15);
        --color-warning-border: rgba(245, 158, 11, 0.3);
        --color-warning-text: #fcd34d;

        --color-info: #38bdf8;
        --color-info-bg: rgba(56, 189, 248, 0.15);
        --color-info-border: rgba(56, 189, 248, 0.3);
        
        --color-danger: #f43f5e;
        --color-danger-hover: #e11d48;

        --color-overlay: rgba(3, 7, 18, 0.78);
        --color-confirm-overlay: rgba(3, 7, 18, 0.7);

        --color-skeleton-start: #1e293b;
        --color-skeleton-mid: #334155;

        --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.3);
        --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.4), 0 1px 2px rgba(0, 0, 0, 0.3);
        --shadow-md: 0 4px 12px -2px rgba(0, 0, 0, 0.5), 0 2px 6px -2px rgba(0, 0, 0, 0.3);
        --shadow-lg: 0 12px 32px -4px rgba(0, 0, 0, 0.6), 0 4px 12px -2px rgba(0, 0, 0, 0.4);
        --shadow-accent: 0 4px 14px rgba(99, 102, 241, 0.35);
    }
}

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

html {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-sans);
    color: var(--color-text);
    background-color: var(--color-bg-base);
    background-image: radial-gradient(var(--color-bg-pattern) 1px, transparent 1px);
    background-size: 24px 24px;
    line-height: 1.5;
    min-height: 100vh;
}

a {
    color: var(--color-accent);
    text-decoration: none;
    transition: color var(--transition);
}

a:hover {
    color: var(--color-accent-hover);
}

.hidden {
    display: none !important;
}

/* ── Layout & Header ── */

.app-header {
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-height);
    padding: 0 28px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--color-header-bg);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-xs);
}

.app-header__brand {
    display: flex;
    align-items: center;
    gap: 12px;
}

.app-header__logo {
    width: 34px;
    height: 34px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #4f46e5 0%, #3730a3 100%);
    border-radius: var(--radius-sm);
    color: #ffffff;
    flex-shrink: 0;
    box-shadow: 0 2px 6px rgba(79, 70, 229, 0.25);
}

.app-header__logo svg {
    width: 18px;
    height: 18px;
}

.app-header__title {
    font-size: 16px;
    font-weight: 700;
    color: var(--color-text);
    letter-spacing: -0.02em;
    display: flex;
    align-items: center;
    gap: 8px;
}

.app-header__subtitle {
    font-size: 12px;
    color: var(--color-text-secondary);
    font-weight: 400;
}

.app-header__user {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-badge {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 4px 12px 4px 6px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text);
    box-shadow: var(--shadow-xs);
}

.user-badge__avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: var(--color-accent-soft);
    color: var(--color-accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 11px;
    font-weight: 700;
}

.app-main {
    max-width: 1320px;
    margin: 0 auto;
    padding: 24px 24px 60px;
}

/* ── Login Page ── */

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 24px;
    background:
        radial-gradient(ellipse 70% 50% at 50% 0%, rgba(79, 70, 229, 0.12), transparent),
        radial-gradient(ellipse 60% 40% at 100% 100%, rgba(14, 165, 233, 0.08), transparent),
        var(--color-bg-base);
}

.login-card {
    width: 100%;
    max-width: 400px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: 36px 32px;
    animation: fadeInUp 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

.login-card__brand {
    text-align: center;
    margin-bottom: 28px;
}

.login-card__icon {
    width: 52px;
    height: 52px;
    margin: 0 auto 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #4f46e5 0%, #312e81 100%);
    border-radius: var(--radius-md);
    color: white;
    box-shadow: var(--shadow-accent);
}

.login-card__icon svg {
    width: 26px;
    height: 26px;
}

.login-card__title {
    font-size: 22px;
    font-weight: 700;
    letter-spacing: -0.03em;
    color: var(--color-text);
    margin-bottom: 4px;
}

.login-card__desc {
    font-size: 13px;
    color: var(--color-text-secondary);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ── Forms ── */

.form-group {
    margin-bottom: 18px;
}

.form-label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 6px;
}

.input-wrapper {
    position: relative;
}

.input-icon {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    pointer-events: none;
    display: flex;
}

.input-icon svg {
    width: 16px;
    height: 16px;
}

.form-input {
    width: 100%;
    padding: 10px 14px 10px 38px;
    font-size: 14px;
    font-family: inherit;
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

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

.form-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
}

/* ── Buttons ── */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 14px;
    font-size: 13px;
    font-weight: 600;
    font-family: inherit;
    line-height: 1.2;
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition);
    white-space: nowrap;
    user-select: none;
}

.btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none !important;
}

.btn svg {
    width: 15px;
    height: 15px;
    flex-shrink: 0;
}

.btn-primary {
    background: #4f46e5;
    color: white;
    border-color: #4338ca;
    box-shadow: var(--shadow-xs);
}

.btn-primary:hover:not(:disabled) {
    background: #4338ca;
    box-shadow: 0 2px 8px rgba(79, 70, 229, 0.25);
    transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

.btn-secondary {
    background: var(--color-surface);
    color: var(--color-text);
    border-color: var(--color-border);
    box-shadow: var(--shadow-xs);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--color-surface-muted);
    border-color: var(--color-border-strong);
}

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
    border-color: transparent;
}

.btn-ghost:hover:not(:disabled) {
    background: var(--color-surface-muted);
    color: var(--color-text);
}

.btn-danger {
    background: var(--color-danger);
    color: white;
    border-color: #be123c;
}

.btn-danger:hover:not(:disabled) {
    background: var(--color-danger-hover);
}

.btn-sm {
    padding: 6px 11px;
    font-size: 12px;
}

.btn-block {
    width: 100%;
    padding: 11px 16px;
    font-size: 14px;
}

.btn-icon {
    padding: 6px;
    border-radius: var(--radius-sm);
}

/* ── Navigation Tabs ── */

.nav-tabs {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-bottom: 20px;
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 8px;
}

.nav-tab {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 7px 14px;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text-secondary);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
    text-decoration: none;
}

.nav-tab:hover {
    color: var(--color-text);
    background: var(--color-surface-muted);
}

.nav-tab--active {
    color: var(--color-accent);
    background: var(--color-accent-soft);
    font-weight: 600;
}

/* ── Stats Grid (auto_logs) ── */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 12px;
    margin-bottom: 20px;
}

.stat-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 14px 18px;
    box-shadow: var(--shadow-xs);
    display: flex;
    flex-direction: column;
    gap: 4px;
    transition: all var(--transition);
    position: relative;
    cursor: default;
}

.stat-card--clickable {
    cursor: pointer;
}

.stat-card--clickable:hover {
    border-color: var(--color-accent-muted);
    box-shadow: var(--shadow-md);
    transform: translateY(-1px);
}

.stat-card--active {
    border-color: var(--color-accent);
    background: var(--color-accent-soft);
    box-shadow: 0 0 0 2px rgba(79, 70, 229, 0.15);
}

.stat-card__label {
    font-size: 12px;
    color: var(--color-text-secondary);
    font-weight: 500;
}

.stat-card__value {
    font-size: 24px;
    font-weight: 700;
    color: var(--color-text);
    font-family: var(--font-mono);
    line-height: 1.2;
}

.stat-card--pending .stat-card__value {
    color: var(--color-warning);
}

.stat-card--in-progress .stat-card__value {
    color: var(--color-info);
}

.stat-card--completed .stat-card__value {
    color: var(--color-success);
}

/* ── Toolbar & Filters ── */

.toolbar {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    margin-bottom: 16px;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    box-shadow: var(--shadow-xs);
}

.filter-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 8px;
    flex: 1;
    min-width: 0;
}

.search-input,
.filter-select {
    padding: 7px 11px;
    font-size: 13px;
    font-family: inherit;
    color: var(--color-text);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}

.search-input {
    min-width: 240px;
    flex: 1;
    max-width: 360px;
}

.filter-select {
    cursor: pointer;
    min-width: 110px;
}

.search-input:focus,
.filter-select:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.12);
}

.chip-group {
    display: flex;
    flex-wrap: wrap;
    gap: 4px;
}

.chip {
    padding: 4px 10px;
    font-size: 12px;
    font-weight: 500;
    font-family: inherit;
    color: var(--color-text-secondary);
    background: var(--color-surface-muted);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    cursor: pointer;
    transition: all var(--transition);
    user-select: none;
}

.chip:hover {
    border-color: var(--color-accent-muted);
    color: var(--color-accent);
}

.chip.active {
    background: var(--color-accent-soft);
    border-color: var(--color-accent);
    color: var(--color-accent);
    font-weight: 600;
}

/* ── File Grid & Items (High Density Workbench) ── */

.file-grid {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.file-card {
    display: flex;
    align-items: center;
    gap: 14px;
    padding: 12px 18px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xs);
    transition: all var(--transition);
}

.file-card:hover {
    border-color: var(--color-accent-muted);
    box-shadow: var(--shadow-sm);
    background: var(--color-surface-hover);
}

.file-card__icon {
    width: 38px;
    height: 38px;
    flex-shrink: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-accent-soft);
    color: var(--color-accent);
    border-radius: var(--radius-sm);
}

.file-card__icon svg {
    width: 20px;
    height: 20px;
}

.file-card__body {
    flex: 1;
    min-width: 0;
}

.file-card__name {
    font-size: 14px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
    word-break: break-all;
    font-family: var(--font-mono);
    letter-spacing: -0.01em;
}

.file-card__meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
}

.meta-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 8px;
    font-size: 12px;
    font-weight: 500;
    line-height: 1.4;
    color: var(--color-text-secondary);
    background: var(--color-surface-muted);
    border-radius: 4px;
    border: none;
}

.meta-tag svg {
    width: 12px;
    height: 12px;
    opacity: 0.7;
}

.meta-tag--accent {
    background: var(--color-accent-soft);
    color: var(--color-accent);
    font-weight: 600;
}

.meta-tag--version {
    background: rgba(99, 102, 241, 0.15);
    color: #6366f1;
    font-weight: 700;
    font-family: var(--font-mono);
    border: 1px solid rgba(99, 102, 241, 0.3);
}

.meta-tag--os {
    background: rgba(14, 165, 233, 0.12);
    color: #0284c7;
    font-weight: 600;
}

[data-theme="dark"] .meta-tag--os {
    background: rgba(14, 165, 233, 0.2);
    color: #38bdf8;
}

.meta-tag--dotnet {
    background: rgba(168, 85, 247, 0.12);
    color: #9333ea;
    font-weight: 600;
}

[data-theme="dark"] .meta-tag--dotnet {
    background: rgba(168, 85, 247, 0.2);
    color: #c084fc;
}

.file-card__desc {
    margin-top: 6px;
    font-size: 12px;
    color: var(--color-text-secondary);
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.file-card__desc-tag {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 1px 6px;
    background: var(--color-surface-muted);
    border-radius: 4px;
    font-size: 11px;
}

.file-card__error-strip {
    margin-top: 6px;
    padding: 4px 8px;
    background: rgba(239, 68, 68, 0.08);
    border-left: 3px solid var(--color-danger);
    border-radius: 0 var(--radius-xs) var(--radius-xs) 0;
    font-size: 11px;
    color: var(--color-danger);
    font-family: var(--font-mono);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
}

.file-card__actions {
    display: flex;
    align-items: center;
    gap: 6px;
    flex-shrink: 0;
}

/* ── Group Cards (Auto Logs) ── */

.group-card {
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-xs);
    margin-bottom: 12px;
    overflow: hidden;
    transition: all var(--transition);
}

.group-card:hover {
    border-color: var(--color-border-strong);
    box-shadow: var(--shadow-sm);
}

.group-card__header {
    padding: 12px 18px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    background: var(--color-surface);
}

.group-card__title-row {
    display: flex;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.group-fingerprint {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
    color: var(--color-text);
    background: var(--color-surface-muted);
    padding: 3px 8px;
    border-radius: var(--radius-xs);
    border: 1px solid var(--color-border);
    display: inline-flex;
    align-items: center;
    gap: 6px;
}

.group-fingerprint button {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--color-text-muted);
    display: inline-flex;
    padding: 2px;
    border-radius: 3px;
    transition: color var(--transition);
}

.group-fingerprint button:hover {
    color: var(--color-accent);
}

.group-fingerprint button svg {
    width: 14px;
    height: 14px;
}

.group-card__actions {
    display: flex;
    align-items: center;
    gap: 8px;
}

.group-card__meta-bar {
    padding: 8px 18px;
    background: var(--color-surface-muted);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    flex-wrap: wrap;
    font-size: 12px;
    color: var(--color-text-secondary);
}

.group-meta-items {
    display: flex;
    align-items: center;
    gap: 14px;
    flex-wrap: wrap;
}

.group-note-box {
    padding: 10px 18px;
    background: var(--color-warning-bg);
    border-bottom: 1px solid var(--color-border);
    font-size: 13px;
    color: var(--color-warning-text);
    display: flex;
    align-items: flex-start;
    gap: 8px;
}

.group-files-container {
    padding: 12px 18px;
    background: var(--color-surface-muted);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.group-file-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 14px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    gap: 12px;
    flex-wrap: wrap;
}

.group-file-info {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
    flex: 1;
}

.group-file-name {
    font-size: 13px;
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--color-text);
    word-break: break-all;
}

.group-file-meta {
    font-size: 11px;
    color: var(--color-text-secondary);
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

/* ── Status Badges ── */

.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 3px 8px;
    font-size: 11px;
    font-weight: 600;
    border-radius: 999px;
    line-height: 1.2;
}

.status-badge--pending {
    background: var(--color-warning-bg);
    color: var(--color-warning);
    border: 1px solid var(--color-warning-border);
}

.status-badge--in_progress {
    background: var(--color-info-bg);
    color: var(--color-info);
    border: 1px solid var(--color-info-border);
}

.status-badge--completed {
    background: var(--color-success-bg);
    color: var(--color-success);
    border: 1px solid var(--color-success-border);
}

.status-badge--not_needed {
    background: var(--color-surface-muted);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

/* ── Modal & Workbench Log Reader ── */

.modal-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 1000;
    background: var(--color-overlay);
    backdrop-filter: blur(4px);
    align-items: center;
    justify-content: center;
    padding: 16px;
    animation: fadeIn 0.18s ease;
}

.modal-overlay.show {
    display: flex;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal {
    width: 100%;
    max-width: 1080px;
    height: 86vh;
    max-height: 900px;
    background: var(--color-surface);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    animation: modalIn 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    transition: all 0.2s ease;
}

.modal--fullscreen {
    max-width: 100vw;
    height: 100vh;
    max-height: 100vh;
    border-radius: 0;
    padding: 0;
    margin: 0;
}

@keyframes modalIn {
    from {
        opacity: 0;
        transform: scale(0.98) translateY(6px);
    }
    to {
        opacity: 1;
        transform: scale(1) translateY(0);
    }
}

.modal__header {
    padding: 12px 18px;
    border-bottom: 1px solid var(--color-border);
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    background: var(--color-surface-muted);
}

.modal__toolbar {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 6px;
}

.modal__search {
    padding: 6px 10px;
    font-size: 13px;
    font-family: inherit;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    min-width: 180px;
}

.modal__search:focus {
    outline: none;
    border-color: var(--color-accent);
}

.modal__body {
    display: flex;
    flex: 1;
    min-height: 0;
    overflow: hidden;
}

.modal__sidebar {
    width: 260px;
    flex-shrink: 0;
    border-right: 1px solid var(--color-border);
    overflow-y: auto;
    background: var(--color-surface-muted);
}

.modal__sidebar.hidden {
    display: none;
}

.modal__preview {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    min-width: 0;
    background: #0f172a;
    color: #e2e8f0;
}

.breadcrumb {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 4px;
    font-size: 13px;
}

.breadcrumb-item {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    color: var(--color-accent);
    cursor: pointer;
    padding: 3px 6px;
    border-radius: var(--radius-xs);
    transition: background var(--transition);
}

.breadcrumb-item:hover {
    background: var(--color-accent-soft);
}

.breadcrumb-separator {
    color: var(--color-text-muted);
    user-select: none;
}

.breadcrumb-current {
    color: var(--color-text);
    font-weight: 600;
    padding: 3px 6px;
}

.file-tree-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 14px;
    font-size: 12px;
    cursor: pointer;
    border-bottom: 1px solid var(--color-border);
    transition: background var(--transition);
    word-break: break-all;
    color: var(--color-text);
}

.file-tree-item:hover {
    background: var(--color-surface-hover);
}

.file-tree-item.active {
    background: var(--color-accent-soft);
    color: var(--color-accent);
    font-weight: 600;
}

.file-tree-item svg {
    width: 15px;
    height: 15px;
    flex-shrink: 0;
    color: var(--color-text-muted);
}

/* ── Code & Log Content in Reader ── */

.preview-content {
    font-family: var(--font-mono);
    font-size: 13px;
    line-height: 1.6;
    white-space: pre-wrap;
    word-break: break-all;
    color: #f1f5f9;
    background: transparent;
    padding: 4px;
}

.preview-image-container {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 240px;
    background: #020617;
    border-radius: var(--radius-md);
    padding: 16px;
}

.preview-image {
    max-width: 100%;
    max-height: 70vh;
    height: auto;
    border-radius: var(--radius-sm);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.search-result-header {
    padding: 10px 14px;
    margin-bottom: 12px;
    background: #1e293b;
    border-radius: var(--radius-sm);
    font-size: 13px;
    color: #38bdf8;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 6px;
}

.search-result-line {
    padding: 6px 8px;
    border-bottom: 1px solid #1e293b;
    font-family: var(--font-mono);
    font-size: 12.5px;
    color: #cbd5e1;
}

.search-result-line:hover {
    background: #1e293b80;
}

.search-result-line mark {
    background: #facc15;
    color: #0f172a;
    font-weight: 600;
    padding: 1px 4px;
    border-radius: 2px;
}

.line-number {
    color: #64748b;
    margin-right: 12px;
    user-select: none;
}

/* ── Toast & Notifications ── */

.toast-container {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 2000;
    display: flex;
    flex-direction: column;
    gap: 8px;
    pointer-events: none;
    max-width: min(380px, calc(100vw - 32px));
}

.toast {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 12px 16px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    pointer-events: auto;
    animation: toastIn 0.22s cubic-bezier(0.16, 1, 0.3, 1);
}

.toast--success { border-left: 4px solid var(--color-success); }
.toast--error { border-left: 4px solid var(--color-error); }
.toast--info { border-left: 4px solid var(--color-accent); }
.toast--warning { border-left: 4px solid var(--color-warning); }

.toast__icon svg {
    width: 16px;
    height: 16px;
}

.toast--success .toast__icon { color: var(--color-success); }
.toast--error .toast__icon { color: var(--color-error); }
.toast--info .toast__icon { color: var(--color-accent); }
.toast--warning .toast__icon { color: var(--color-warning); }

.toast__message {
    flex: 1;
    font-size: 13px;
    font-weight: 500;
    color: var(--color-text);
}

.toast.toast--out {
    animation: toastOut 0.18s ease-in forwards;
}

@keyframes toastIn {
    from {
        opacity: 0;
        transform: translateX(18px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

@keyframes toastOut {
    to {
        opacity: 0;
        transform: translateX(18px);
    }
}

/* ── Confirm Dialog ── */

.confirm-overlay {
    display: none;
    position: fixed;
    inset: 0;
    z-index: 3000;
    background: var(--color-confirm-overlay);
    backdrop-filter: blur(4px);
    align-items: center;
    justify-content: center;
    padding: 16px;
}

.confirm-overlay.show {
    display: flex;
}

.confirm-dialog {
    width: 100%;
    max-width: 380px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    padding: 20px;
    animation: modalIn 0.18s ease-out;
}

.confirm-dialog__title {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--color-text);
}

.confirm-dialog__message {
    font-size: 13px;
    color: var(--color-text-secondary);
    margin-bottom: 20px;
    line-height: 1.5;
}

.confirm-dialog__actions {
    display: flex;
    justify-content: flex-end;
    gap: 8px;
}

/* ── Empty & Skeleton States ── */

.state-panel {
    text-align: center;
    padding: 48px 24px;
    background: var(--color-surface);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-md);
}

.state-panel__icon {
    width: 48px;
    height: 48px;
    margin: 0 auto 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface-muted);
    border-radius: 50%;
    color: var(--color-text-muted);
}

.state-panel__icon svg {
    width: 24px;
    height: 24px;
}

.state-panel__title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-text);
    margin-bottom: 4px;
}

.state-panel__desc {
    font-size: 13px;
    color: var(--color-text-secondary);
}

.state-panel__action {
    margin-top: 14px;
}

.skeleton-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.skeleton-card {
    height: 64px;
    background: linear-gradient(90deg, var(--color-skeleton-start) 25%, var(--color-skeleton-mid) 50%, var(--color-skeleton-start) 75%);
    background-size: 200% 100%;
    border-radius: var(--radius-md);
    animation: shimmer 1.2s infinite;
}

@keyframes shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ── Theme Switcher ── */

.theme-switch {
    display: inline-flex;
    align-items: center;
    background: var(--color-surface-muted);
    border: 1px solid var(--color-border);
    border-radius: 999px;
    padding: 2px;
    gap: 2px;
    user-select: none;
    box-shadow: var(--shadow-xs);
}

.theme-switch__btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 5px;
    padding: 4px 9px;
    border-radius: 999px;
    border: 1px solid transparent;
    background: transparent;
    color: var(--color-text-secondary);
    font-size: 12px;
    font-weight: 500;
    font-family: inherit;
    cursor: pointer;
    transition: all var(--transition);
    line-height: 1.2;
    white-space: nowrap;
}

.theme-switch__btn svg {
    width: 14px;
    height: 14px;
    flex-shrink: 0;
}

.theme-switch__btn:hover {
    color: var(--color-text);
}

.theme-switch__btn.active {
    background: var(--color-surface);
    color: var(--color-accent);
    font-weight: 600;
    border-color: var(--color-border);
    box-shadow: var(--shadow-xs);
}

[data-theme="dark"] .theme-switch__btn.active {
    background: var(--color-surface-elevated);
    color: #a5b4fc;
    border-color: var(--color-border-strong);
}

.theme-switch-floating {
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 200;
}

/* ── Pagination ── */

.pagination {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 6px;
    margin-top: 20px;
    padding: 12px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.pagination__btn {
    min-width: 32px;
    height: 32px;
    padding: 0 10px;
    font-size: 13px;
    font-family: inherit;
    font-weight: 500;
    color: var(--color-text-secondary);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xs);
    cursor: pointer;
    transition: all var(--transition);
}

.pagination__btn:hover:not(:disabled) {
    border-color: var(--color-accent);
    color: var(--color-accent);
}

.pagination__btn.active {
    background: var(--color-accent);
    border-color: var(--color-accent);
    color: white;
}

.pagination__btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* ── Inline Alert ── */

.alert {
    display: flex;
    align-items: flex-start;
    gap: 8px;
    padding: 10px 12px;
    border-radius: var(--radius-sm);
    font-size: 13px;
    margin-bottom: 16px;
    animation: slideDown 0.2s ease-out;
}

.alert svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    margin-top: 1px;
}

.alert-error {
    background: var(--color-error-bg);
    color: var(--color-error);
    border: 1px solid var(--color-error-border);
}

.alert-success {
    background: var(--color-success-bg);
    color: var(--color-success);
    border: 1px solid var(--color-success-border);
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-6px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.spinner {
    display: inline-block;
    width: 14px;
    height: 14px;
    border: 2px solid rgba(255, 255, 255, 0.35);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 0.6s linear infinite;
}

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

/* ── Responsive ── */

@media (max-width: 768px) {
    .app-header {
        padding: 0 16px;
        height: auto;
        min-height: var(--header-height);
        flex-wrap: wrap;
        padding-top: 10px;
        padding-bottom: 10px;
        gap: 10px;
    }

    .app-main {
        padding: 16px 14px 40px;
    }

    .toolbar {
        flex-direction: column;
        align-items: stretch;
    }

    .filter-row {
        flex-direction: column;
        align-items: stretch;
    }

    .search-input {
        max-width: none;
    }

    .file-card {
        flex-direction: column;
        align-items: flex-start;
    }

    .file-card__actions {
        width: 100%;
    }

    .file-card__actions .btn {
        flex: 1;
    }

    .modal__body {
        flex-direction: column;
    }

    .modal__sidebar {
        width: 100%;
        max-height: 180px;
        border-right: none;
        border-bottom: 1px solid var(--color-border);
    }

    .modal__header {
        flex-direction: column;
        align-items: stretch;
    }

    .modal__toolbar {
        width: 100%;
    }

    .modal__search {
        flex: 1;
        min-width: 0;
    }

    .login-card {
        padding: 28px 20px;
    }

    .toast-container {
        left: 16px;
        right: 16px;
        max-width: none;
    }

    .group-card__header {
        flex-direction: column;
        align-items: flex-start;
    }

    .group-card__actions {
        width: 100%;
        justify-content: flex-start;
    }
}