/* ──────────────────────────────────────────────
   Theme: CSS Custom Properties (Dark / Light)
   ────────────────────────────────────────────── */

:root,
[data-theme="dark"] {
    --bg-gradient-start: #0a1628;
    --bg-gradient-end: #1a0a2e;
    --bg-gradient: linear-gradient(135deg, var(--bg-gradient-start) 0%, #0d2137 40%, var(--bg-gradient-end) 100%);

    --glass-bg: rgba(255, 255, 255, 0.06);
    --glass-border: rgba(255, 255, 255, 0.12);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --glass-blur: blur(16px);

    --sidebar-bg: rgba(255, 255, 255, 0.04);
    --sidebar-border: rgba(255, 255, 255, 0.08);
    --sidebar-hover: rgba(255, 255, 255, 0.08);
    --sidebar-active: rgba(255, 255, 255, 0.14);

    --topbar-bg: rgba(255, 255, 255, 0.04);
    --topbar-border: rgba(255, 255, 255, 0.06);

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

    --accent: #10b981;
    --accent-hover: #059669;
    --accent-glow: rgba(16, 185, 129, 0.25);
    --accent-gradient: linear-gradient(135deg, #10b981 0%, #06b6d4 100%);

    --danger: #ef4444;
    --danger-bg: rgba(239, 68, 68, 0.12);
    --danger-border: rgba(239, 68, 68, 0.3);

    --success-bg: rgba(16, 185, 129, 0.12);
    --success-border: rgba(16, 185, 129, 0.3);

    --input-bg: rgba(255, 255, 255, 0.06);
    --input-border: rgba(255, 255, 255, 0.15);
    --input-focus-border: var(--accent);
    --input-text: var(--text-primary);

    --card-bg: var(--glass-bg);
    --card-border: var(--glass-border);

    --stat-bg: rgba(255, 255, 255, 0.04);

    color-scheme: dark;
}

[data-theme="light"] {
    --bg-gradient-start: #e8f0fe;
    --bg-gradient-end: #f0e6f6;
    --bg-gradient: linear-gradient(135deg, var(--bg-gradient-start) 0%, #eef4fb 40%, var(--bg-gradient-end) 100%);

    --glass-bg: rgba(255, 255, 255, 0.55);
    --glass-border: rgba(255, 255, 255, 0.7);
    --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.08);
    --glass-blur: blur(16px);

    --sidebar-bg: rgba(255, 255, 255, 0.45);
    --sidebar-border: rgba(255, 255, 255, 0.6);
    --sidebar-hover: rgba(0, 0, 0, 0.04);
    --sidebar-active: rgba(16, 185, 129, 0.12);

    --topbar-bg: rgba(255, 255, 255, 0.5);
    --topbar-border: rgba(0, 0, 0, 0.06);

    --text-primary: #1e293b;
    --text-secondary: #475569;
    --text-muted: #94a3b8;

    --accent: #059669;
    --accent-hover: #047857;
    --accent-glow: rgba(5, 150, 105, 0.2);
    --accent-gradient: linear-gradient(135deg, #059669 0%, #0891b2 100%);

    --danger: #dc2626;
    --danger-bg: rgba(220, 38, 38, 0.08);
    --danger-border: rgba(220, 38, 38, 0.2);

    --success-bg: rgba(5, 150, 105, 0.08);
    --success-border: rgba(5, 150, 105, 0.2);

    --input-bg: rgba(255, 255, 255, 0.7);
    --input-border: rgba(0, 0, 0, 0.12);
    --input-focus-border: var(--accent);
    --input-text: var(--text-primary);

    --card-bg: var(--glass-bg);
    --card-border: var(--glass-border);

    --stat-bg: rgba(255, 255, 255, 0.45);

    color-scheme: light;
}

/* ──────────────────────────────────────────────
   Base
   ────────────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

html, body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-gradient);
    color: var(--text-primary);
    min-height: 100vh;
    margin: 0;
    transition: background 0.3s ease, color 0.3s ease;
}

h1, h2, h3, h4 {
    color: var(--text-primary);
    font-weight: 600;
}

h1:focus {
    outline: none;
}

a, .btn-link {
    color: var(--accent);
}

/* ──────────────────────────────────────────────
   Glass Card
   ────────────────────────────────────────────── */

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    box-shadow: var(--glass-shadow);
    padding: 1.5rem;
    transition: background 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.glass-card-sm {
    background: var(--stat-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    box-shadow: var(--glass-shadow);
    padding: 1.25rem;
    transition: background 0.3s ease, border-color 0.3s ease;
}

/* ──────────────────────────────────────────────
   Buttons
   ────────────────────────────────────────────── */

.btn-primary, .btn-accent {
    background: var(--accent-gradient);
    border: none;
    color: #fff;
    font-weight: 600;
    border-radius: 10px;
    padding: 0.6rem 1.5rem;
    transition: transform 0.15s ease, box-shadow 0.15s ease;
    box-shadow: 0 4px 14px var(--accent-glow);
}

.btn-primary:hover, .btn-accent:hover {
    transform: translateY(-1px);
    box-shadow: 0 6px 20px var(--accent-glow);
    background: var(--accent-gradient);
    color: #fff;
}

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

.btn-glass {
    background: var(--glass-bg);
    backdrop-filter: var(--glass-blur);
    -webkit-backdrop-filter: var(--glass-blur);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    border-radius: 10px;
    padding: 0.5rem 1rem;
    transition: background 0.2s ease;
}

.btn-glass:hover {
    background: var(--sidebar-hover);
    color: var(--text-primary);
}

/* ──────────────────────────────────────────────
   Form Controls
   ────────────────────────────────────────────── */

.form-control, .form-select {
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--input-text);
    border-radius: 10px;
    padding: 0.6rem 0.9rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.form-control:focus, .form-select:focus {
    background: var(--input-bg);
    border-color: var(--input-focus-border);
    color: var(--input-text);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

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

.form-label {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.875rem;
    margin-bottom: 0.4rem;
}

.form-select option {
    background: var(--bg-gradient-start);
    color: var(--text-primary);
}

/* ──────────────────────────────────────────────
   Alerts (glass style)
   ────────────────────────────────────────────── */

.alert-glass-success {
    background: var(--success-bg);
    border: 1px solid var(--success-border);
    color: var(--accent);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    font-weight: 500;
}

.alert-glass-danger {
    background: var(--danger-bg);
    border: 1px solid var(--danger-border);
    color: var(--danger);
    border-radius: 12px;
    padding: 1rem 1.25rem;
    font-weight: 500;
}

.alert-glass-info {
    background: rgba(8, 145, 178, 0.12);
    border: 1px solid rgba(8, 145, 178, 0.25);
    color: #67e8f9;
    border-radius: 12px;
    padding: 1rem 1.25rem;
    font-weight: 500;
}

/* ──────────────────────────────────────────────
   Welcome Banner
   ────────────────────────────────────────────── */

.welcome-banner {
    background: var(--accent-gradient);
    border-radius: 16px;
    padding: 2rem 2.5rem;
    color: #fff;
    position: relative;
    overflow: hidden;
}

.welcome-banner::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -10%;
    width: 300px;
    height: 300px;
    background: rgba(255, 255, 255, 0.08);
    border-radius: 50%;
}

.welcome-banner::after {
    content: '';
    position: absolute;
    bottom: -30%;
    right: 15%;
    width: 200px;
    height: 200px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 50%;
}

.welcome-banner h2 {
    color: #fff;
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.welcome-banner p {
    opacity: 0.9;
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* ──────────────────────────────────────────────
   Stat Cards
   ────────────────────────────────────────────── */

.stat-value {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.stat-change {
    font-size: 0.78rem;
    font-weight: 500;
}

.stat-change.positive {
    color: var(--accent);
}

.stat-change.negative {
    color: var(--danger);
}

/* ──────────────────────────────────────────────
   Theme Toggle
   ────────────────────────────────────────────── */

.theme-toggle {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.theme-toggle-track {
    width: 44px;
    height: 24px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    position: relative;
    cursor: pointer;
    transition: background 0.3s ease;
}

.theme-toggle-thumb {
    width: 18px;
    height: 18px;
    background: var(--accent);
    border-radius: 50%;
    position: absolute;
    top: 2px;
    left: 2px;
    transition: transform 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 10px;
}

[data-theme="light"] .theme-toggle-thumb {
    transform: translateX(20px);
}

/* ──────────────────────────────────────────────
   Content area
   ────────────────────────────────────────────── */

.content {
    padding-top: 1.1rem;
}

/* ──────────────────────────────────────────────
   Utilities
   ────────────────────────────────────────────── */

.text-accent {
    color: var(--accent) !important;
}

.text-muted-glass {
    color: var(--text-secondary);
}

.calculator-intro {
    max-width: 60ch;
}

.calculator-form-card {
    overflow: hidden;
}

.rte-shell {
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    border-radius: 14px;
    overflow: hidden;
}

.rte-toolbar {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    padding: 0.85rem;
    border-bottom: 1px solid var(--glass-border);
    background: rgba(255, 255, 255, 0.03);
}

.rte-button {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    color: var(--text-primary);
    border-radius: 10px;
    padding: 0.45rem 0.7rem;
    min-width: 3rem;
    transition: background 0.2s ease, border-color 0.2s ease;
}

.rte-button:hover {
    background: var(--sidebar-hover);
    border-color: var(--accent);
}

.rte-editor {
    min-height: 220px;
    padding: 1rem;
    color: var(--text-primary);
    outline: none;
    line-height: 1.6;
}

.rte-editor:empty::before {
    content: attr(data-placeholder);
    color: var(--text-muted);
}

.result-card {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.result-header {
    display: flex;
    justify-content: space-between;
    gap: 1.5rem;
    align-items: center;
}

.result-title {
    font-size: 1.45rem;
}

.result-meta-row {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.source-badge {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 0.35rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.03em;
}

.source-badge-ai {
    background: rgba(16, 185, 129, 0.14);
    color: #6ee7b7;
    border: 1px solid rgba(16, 185, 129, 0.25);
}

.source-badge-fallback {
    background: rgba(245, 158, 11, 0.14);
    color: #fcd34d;
    border: 1px solid rgba(245, 158, 11, 0.25);
}

.result-hours-badge {
    min-width: 132px;
    min-height: 132px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 12px 30px var(--accent-glow);
}

.result-hours-value {
    font-size: 2.4rem;
    font-weight: 700;
    line-height: 1;
}

.result-hours-label {
    font-size: 0.95rem;
    opacity: 0.9;
}

.result-metric {
    height: 100%;
}

.result-detail-card {
    height: 100%;
}

.metric-value {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.assumption-list {
    margin: 0;
    padding-left: 1.25rem;
    color: var(--text-secondary);
}

.assumption-list li + li {
    margin-top: 0.5rem;
}

.driver-list {
    margin: 0;
    padding-left: 1.25rem;
    color: var(--text-secondary);
}

.driver-list li + li {
    margin-top: 0.5rem;
}

.result-checklist {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.checklist-section {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.checklist-section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
}

.checklist-card {
    height: 100%;
}

.checklist-card-header {
    display: flex;
    justify-content: space-between;
    gap: 0.75rem;
    align-items: flex-start;
}

.checklist-card-meta {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: flex-end;
}

.checklist-topic {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.checklist-hours {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 0.3rem 0.7rem;
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
    color: #bfdbfe;
    background: rgba(59, 130, 246, 0.14);
    border: 1px solid rgba(59, 130, 246, 0.25);
}

.checklist-status {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 0.3rem 0.7rem;
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
}

.checklist-status-included {
    background: rgba(16, 185, 129, 0.14);
    color: #6ee7b7;
    border: 1px solid rgba(16, 185, 129, 0.25);
}

.checklist-status-na {
    background: rgba(148, 163, 184, 0.16);
    color: #cbd5e1;
    border: 1px solid rgba(148, 163, 184, 0.28);
}

.checklist-status-unclear {
    background: rgba(245, 158, 11, 0.14);
    color: #fcd34d;
    border: 1px solid rgba(245, 158, 11, 0.25);
}

.checklist-text-block p {
    color: var(--text-secondary);
}

.result-repositories {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.repository-context-card {
    height: 100%;
}

.repository-context-header {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
    align-items: flex-start;
}

.repository-context-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.repository-context-meta {
    color: var(--text-muted);
    font-size: 0.9rem;
}

.repository-context-role {
    display: inline-flex;
    align-items: center;
    border-radius: 999px;
    padding: 0.3rem 0.7rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: #bfdbfe;
    background: rgba(59, 130, 246, 0.14);
    border: 1px solid rgba(59, 130, 246, 0.25);
}

.repository-file-list {
    margin: 0;
    padding-left: 1.25rem;
    color: var(--text-secondary);
}

.repository-file-list li + li {
    margin-top: 0.35rem;
}

@media (max-width: 767.98px) {
    .result-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .result-hours-badge {
        min-width: 110px;
        min-height: 110px;
    }

    .checklist-card-header {
        flex-direction: column;
    }

    .checklist-section-header {
        flex-direction: column;
        align-items: flex-start;
    }

    .checklist-card-meta {
        justify-content: flex-start;
    }

    .repository-context-header {
        flex-direction: column;
    }
}

/* ──────────────────────────────────────────────
   Validation
   ────────────────────────────────────────────── */

.valid.modified:not([type=checkbox]) {
    outline: 1px solid var(--accent);
}

.invalid {
    outline: 1px solid var(--danger);
}

.validation-message {
    color: var(--danger);
}

/* ──────────────────────────────────────────────
   Blazor infrastructure
   ────────────────────────────────────────────── */

#blazor-error-ui {
    color-scheme: light only;
    background: lightyellow;
    bottom: 0;
    box-shadow: 0 -1px 2px rgba(0, 0, 0, 0.2);
    box-sizing: border-box;
    display: none;
    left: 0;
    padding: 0.6rem 1.25rem 0.7rem 1.25rem;
    position: fixed;
    width: 100%;
    z-index: 1000;
}

    #blazor-error-ui .dismiss {
        cursor: pointer;
        position: absolute;
        right: 0.75rem;
        top: 0.5rem;
    }

.blazor-error-boundary {
    background: url(data:image/svg+xml;base64,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) no-repeat 1rem/1.8rem, #b32121;
    padding: 1rem 1rem 1rem 3.7rem;
    color: white;
}

    .blazor-error-boundary::after {
        content: "An error has occurred."
    }

.loading-progress {
    position: absolute;
    display: block;
    width: 8rem;
    height: 8rem;
    inset: 20vh 0 auto 0;
    margin: 0 auto 0 auto;
}

    .loading-progress circle {
        fill: none;
        stroke: #e0e0e0;
        stroke-width: 0.6rem;
        transform-origin: 50% 50%;
        transform: rotate(-90deg);
    }

        .loading-progress circle:last-child {
            stroke: #10b981;
            stroke-dasharray: calc(3.141 * var(--blazor-load-percentage, 0%) * 0.8), 500%;
            transition: stroke-dasharray 0.05s ease-in-out;
        }

.loading-progress-text {
    position: absolute;
    text-align: center;
    font-weight: bold;
    inset: calc(20vh + 3.25rem) 0 auto 0.2rem;
}

    .loading-progress-text:after {
        content: var(--blazor-load-percentage-text, "Loading");
    }

code {
    color: #c02d76;
}

.form-floating > .form-control-plaintext::placeholder, .form-floating > .form-control::placeholder {
    color: var(--bs-secondary-color);
    text-align: end;
}

.form-floating > .form-control-plaintext:focus::placeholder, .form-floating > .form-control:focus::placeholder {
    text-align: start;
}