/* ═══════════════════════════════════════════════════════
   ICD-10 Automated Coding System — Premium Dark Theme
   ═══════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* ── Root Variables ── */
:root {
    --bg-primary: #0a0e1a;
    --bg-secondary: #111827;
    --bg-card: #1a2235;
    --bg-card-hover: #1f2a42;
    --bg-elevated: #243049;
    --text-primary: #e8ecf4;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --accent-teal: #06d6a0;
    --accent-teal-dim: rgba(6, 214, 160, 0.15);
    --accent-blue: #4cc9f0;
    --accent-blue-dim: rgba(76, 201, 240, 0.12);
    --accent-purple: #7c3aed;
    --accent-amber: #f59e0b;
    --accent-rose: #f43f5e;
    --border-subtle: rgba(148, 163, 184, 0.08);
    --border-medium: rgba(148, 163, 184, 0.15);
    --shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.4);
    --shadow-glow: 0 0 30px rgba(6, 214, 160, 0.08);
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
}

/* ── Global Styles ── */
.stApp {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg-primary) !important;
}

.main .block-container {
    max-width: 1200px;
    padding-top: 2rem;
}

/* ── Sidebar ── */
[data-testid="stSidebar"] {
    background: linear-gradient(180deg, #0d1321 0%, #111827 100%) !important;
    border-right: 1px solid var(--border-subtle);
}

[data-testid="stSidebar"] .stMarkdown h1,
[data-testid="stSidebar"] .stMarkdown h2,
[data-testid="stSidebar"] .stMarkdown h3 {
    color: var(--accent-teal) !important;
}

/* ── Hero Section ── */
.hero-container {
    background: linear-gradient(135deg, #0d1b2a 0%, #1b2838 50%, #162447 100%);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-xl);
    padding: 3rem 2.5rem;
    margin-bottom: 2rem;
    position: relative;
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.hero-container::before {
    content: '';
    position: absolute;
    top: -50%;
    right: -20%;
    width: 500px;
    height: 500px;
    background: radial-gradient(circle, rgba(6, 214, 160, 0.06) 0%, transparent 70%);
    pointer-events: none;
}

.hero-container::after {
    content: '';
    position: absolute;
    bottom: -30%;
    left: -10%;
    width: 400px;
    height: 400px;
    background: radial-gradient(circle, rgba(76, 201, 240, 0.04) 0%, transparent 70%);
    pointer-events: none;
}

.hero-title {
    font-size: 2.6rem;
    font-weight: 800;
    background: linear-gradient(135deg, #06d6a0 0%, #4cc9f0 50%, #7c3aed 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
    line-height: 1.15;
}

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    font-weight: 400;
    line-height: 1.6;
    max-width: 650px;
}

/* ── Stat Cards ── */
.stat-card {
    background: #1a2235 !important;
    border: 1px solid rgba(148, 163, 184, 0.08) !important;
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    position: relative;
    overflow: hidden;
    color: #e8ecf4 !important;
}

.stat-card:hover {
    border-color: var(--accent-teal);
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--accent-teal), var(--accent-blue));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.stat-card:hover::before {
    opacity: 1;
}

.stat-number {
    font-size: 2.2rem;
    font-weight: 800;
    color: var(--accent-teal);
    font-family: 'JetBrains Mono', monospace;
    line-height: 1.2;
}

.stat-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    margin-top: 0.4rem;
    font-weight: 500;
}

/* ── Prediction Result Cards ── */
.pred-card {
    background: #1a2235 !important;
    border: 1px solid rgba(148, 163, 184, 0.08) !important;
    border-radius: var(--radius-md);
    padding: 1.2rem 1.5rem;
    margin-bottom: 0.75rem;
    transition: all 0.25s ease;
    display: flex;
    align-items: center;
    gap: 1.2rem;
    color: #e8ecf4 !important;
}

.pred-card:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-medium);
    transform: translateX(4px);
}

.pred-rank {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-muted);
    min-width: 30px;
    font-family: 'JetBrains Mono', monospace;
}

.pred-code {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1rem;
    font-weight: 600;
    color: var(--accent-teal);
    background: var(--accent-teal-dim);
    padding: 0.25rem 0.6rem;
    border-radius: 6px;
    min-width: 80px;
    text-align: center;
}

.pred-desc {
    flex: 1;
}

.pred-desc-en {
    font-size: 0.95rem;
    color: var(--text-primary);
    font-weight: 500;
}

.pred-desc-zh {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

.confidence-high {
    color: #06d6a0;
}

.confidence-med {
    color: #f59e0b;
}

.confidence-low {
    color: #f43f5e;
}

/* ── Confidence Bar ── */
.conf-bar-bg {
    background: rgba(255, 255, 255, 0.06);
    border-radius: 6px;
    height: 8px;
    width: 120px;
    overflow: hidden;
}

.conf-bar-fill {
    height: 100%;
    border-radius: 6px;
    transition: width 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.conf-bar-fill-high {
    background: linear-gradient(90deg, #06d6a0, #34d399);
}

.conf-bar-fill-med {
    background: linear-gradient(90deg, #f59e0b, #fbbf24);
}

.conf-bar-fill-low {
    background: linear-gradient(90deg, #f43f5e, #fb7185);
}

/* ── Section Headers ── */
.section-header {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.2rem;
    display: flex;
    align-items: center;
    gap: 0.6rem;
}

.section-accent {
    width: 4px;
    height: 28px;
    background: linear-gradient(180deg, var(--accent-teal), var(--accent-blue));
    border-radius: 4px;
}

/* ── Pipeline Diagram ── */
.pipeline-step {
    background: #1a2235 !important;
    border: 1px solid rgba(148, 163, 184, 0.08) !important;
    border-radius: var(--radius-md);
    padding: 1.2rem 1.5rem;
    margin-bottom: 0.5rem;
    position: relative;
    transition: all 0.3s ease;
    color: #e8ecf4 !important;
}

.pipeline-step:hover {
    border-color: var(--accent-teal);
    box-shadow: var(--shadow-glow);
}

.pipeline-arrow {
    text-align: center;
    font-size: 1.5rem;
    color: var(--accent-teal);
    margin: 0.3rem 0;
}

/* ── Model Cards ── */
.model-card {
    background: linear-gradient(135deg, #1a2235 0%, #243049 100%) !important;
    border: 1px solid rgba(148, 163, 184, 0.08) !important;
    border-radius: var(--radius-lg);
    padding: 1.8rem;
    transition: all 0.3s ease;
    color: #e8ecf4 !important;
}

.model-card:hover {
    border-color: var(--accent-blue);
    transform: translateY(-3px);
    box-shadow: 0 8px 32px rgba(76, 201, 240, 0.1);
}

.model-card-title {
    font-size: 1.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.model-card-metric {
    font-family: 'JetBrains Mono', monospace;
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--accent-teal);
}

.model-card-label {
    font-size: 0.8rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ── Badge ── */
.badge {
    display: inline-block;
    padding: 0.2rem 0.65rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.03em;
}

.badge-teal {
    background: var(--accent-teal-dim);
    color: var(--accent-teal);
}

.badge-blue {
    background: var(--accent-blue-dim);
    color: var(--accent-blue);
}

.badge-purple {
    background: rgba(124, 58, 237, 0.15);
    color: #a78bfa;
}

.badge-amber {
    background: rgba(245, 158, 11, 0.15);
    color: #fbbf24;
}

/* ── Sample Note Cards ── */
.sample-card {
    background: #1a2235 !important;
    border: 1px solid rgba(148, 163, 184, 0.08) !important;
    border-radius: var(--radius-md);
    padding: 1rem 1.2rem;
    cursor: pointer;
    transition: all 0.25s ease;
    color: #e8ecf4 !important;
}

.sample-card:hover {
    background: #1f2a42 !important;
    border-color: #06d6a0 !important;
    transform: translateY(-2px);
}

/* ── ICD Browser Table ── */
.icd-row {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: var(--radius-sm);
    padding: 0.8rem 1.2rem;
    margin-bottom: 0.4rem;
    display: grid;
    grid-template-columns: 100px 1fr 1fr 120px;
    gap: 1rem;
    align-items: center;
    transition: all 0.2s ease;
}

.icd-row:hover {
    background: var(--bg-card-hover);
    border-color: var(--border-medium);
}

/* ── Misc ── */
.divider {
    height: 1px;
    background: var(--border-subtle);
    margin: 2rem 0;
}

/* Override Streamlit defaults for dark theme */
.stTextArea textarea {
    background: var(--bg-card) !important;
    border-color: var(--border-medium) !important;
    color: var(--text-primary) !important;
    border-radius: var(--radius-md) !important;
    font-family: 'JetBrains Mono', monospace !important;
    font-size: 0.9rem !important;
}

.stTextArea textarea:focus {
    border-color: var(--accent-teal) !important;
    box-shadow: 0 0 0 2px var(--accent-teal-dim) !important;
}

.stSelectbox>div>div {
    background: var(--bg-card) !important;
    border-color: var(--border-medium) !important;
    border-radius: var(--radius-md) !important;
}

.stSlider>div>div>div {
    background: var(--accent-teal) !important;
}

/* ── Animated gradient border for active predictions ── */
@keyframes borderGlow {
    0% {
        border-color: rgba(6, 214, 160, 0.3);
    }

    50% {
        border-color: rgba(76, 201, 240, 0.5);
    }

    100% {
        border-color: rgba(6, 214, 160, 0.3);
    }
}

.result-active {
    animation: borderGlow 2s infinite;
}

/* ── Pulse animation for loading ── */
@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

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

/* ── Metric comparison highlight ── */
.metric-best {
    background: var(--accent-teal-dim);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-weight: 700;
}

/* ── Scrollbar ── */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--text-muted);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-secondary);
}

/* ── Footer ── */
.footer {
    text-align: center;
    padding: 2rem 0;
    color: var(--text-muted);
    font-size: 0.8rem;
    border-top: 1px solid var(--border-subtle);
    margin-top: 3rem;
}

/* ── Agreement Panel ── */
.agreement-full {
    border-left: 4px solid var(--accent-teal);
    background: rgba(6, 214, 160, 0.05);
}

.agreement-partial {
    border-left: 4px solid var(--accent-amber);
    background: rgba(245, 158, 11, 0.05);
}

.agreement-none {
    border-left: 4px solid var(--accent-rose);
    background: rgba(244, 63, 94, 0.05);
}

/* ── Batch Progress ── */
.stProgress>div>div>div>div {
    background: linear-gradient(90deg, var(--accent-teal), var(--accent-blue)) !important;
}

/* ── File Upload Zone ── */
[data-testid="stFileUploader"] {
    border-color: var(--border-medium) !important;
}

[data-testid="stFileUploader"]:hover {
    border-color: var(--accent-teal) !important;
}

/* ── Download Button ── */
.stDownloadButton>button {
    background: linear-gradient(135deg, var(--accent-teal), var(--accent-blue)) !important;
    color: #0a0e1a !important;
    font-weight: 600 !important;
    border: none !important;
    border-radius: var(--radius-md) !important;
    transition: all 0.3s ease !important;
}

.stDownloadButton>button:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 6px 20px rgba(6, 214, 160, 0.25) !important;
}

/* ── Comparison Mode Grid ── */
.compare-col .pred-card {
    padding: 0.7rem 1rem;
    margin-bottom: 0.3rem;
}

/* ── Batch Result Table Overrides ── */
.stDataFrame {
    border-radius: var(--radius-md) !important;
    overflow: hidden;
}

/* ═══════════════════════════════════════════════════════
   FORCE DARK MODE ON ALL STREAMLIT ELEMENTS
   Overrides system light theme so the app is ALWAYS dark.
   ═══════════════════════════════════════════════════════ */

/* ── Force dark on root & main container ── */
html,
body,
[data-testid="stAppViewContainer"],
[data-testid="stApp"],
.stApp,
[data-testid="stAppViewBlockContainer"],
.main,
.main .block-container,
[data-testid="stHeader"],
[data-testid="stToolbar"] {
    background-color: #0a0e1a !important;
    color: #e8ecf4 !important;
}

/* ── Force sidebar dark ── */
[data-testid="stSidebar"],
[data-testid="stSidebar"]>div,
[data-testid="stSidebarContent"],
section[data-testid="stSidebar"] {
    background: linear-gradient(180deg, #0d1321 0%, #111827 100%) !important;
    color: #e8ecf4 !important;
}

/* ── All text elements ── */
.stApp p,
.stApp span,
.stApp label,
.stApp div,
.stApp li,
.stApp td,
.stApp th,
[data-testid="stMarkdownContainer"],
[data-testid="stMarkdownContainer"] p,
[data-testid="stMarkdownContainer"] span,
[data-testid="stMarkdownContainer"] li {
    color: #e8ecf4 !important;
}

/* ── Headings ── */
.stApp h1,
.stApp h2,
.stApp h3,
.stApp h4,
.stApp h5,
.stApp h6 {
    color: #e8ecf4 !important;
}

/* ── Text inputs & text areas ── */
.stTextInput input,
.stTextInput>div>div>input,
[data-testid="stTextInput"] input {
    background: #1a2235 !important;
    color: #e8ecf4 !important;
    border-color: rgba(148, 163, 184, 0.15) !important;
}

.stTextArea textarea,
[data-testid="stTextArea"] textarea {
    background: #1a2235 !important;
    color: #e8ecf4 !important;
    border-color: rgba(148, 163, 184, 0.15) !important;
    font-family: 'JetBrains Mono', monospace !important;
}

.stTextInput input:focus,
.stTextArea textarea:focus {
    border-color: #06d6a0 !important;
    box-shadow: 0 0 0 2px rgba(6, 214, 160, 0.15) !important;
}

/* ── Number inputs ── */
.stNumberInput input,
[data-testid="stNumberInput"] input {
    background: #1a2235 !important;
    color: #e8ecf4 !important;
    border-color: rgba(148, 163, 184, 0.15) !important;
}

/* ── Select boxes / dropdowns ── */
.stSelectbox>div>div,
[data-testid="stSelectbox"]>div>div,
.stMultiSelect>div>div {
    background: #1a2235 !important;
    color: #e8ecf4 !important;
    border-color: rgba(148, 163, 184, 0.15) !important;
}

[data-testid="stSelectbox"] span,
.stSelectbox span {
    color: #e8ecf4 !important;
}

/* ── Radio buttons & checkboxes ── */
.stRadio label,
.stCheckbox label,
[data-testid="stRadio"] label,
[data-testid="stCheckbox"] label {
    color: #e8ecf4 !important;
}

/* ── Sliders ── */
.stSlider label,
[data-testid="stSlider"] label {
    color: #e8ecf4 !important;
}

.stSlider>div>div>div>div {
    background: #06d6a0 !important;
}

/* ── File uploader ── */
[data-testid="stFileUploader"],
[data-testid="stFileUploader"]>div {
    background: #1a2235 !important;
    border-color: rgba(148, 163, 184, 0.15) !important;
    color: #e8ecf4 !important;
}

[data-testid="stFileUploader"] label,
[data-testid="stFileUploader"] span,
[data-testid="stFileUploader"] p,
[data-testid="stFileUploader"] small {
    color: #e8ecf4 !important;
}

[data-testid="stFileUploaderDropzone"] {
    background: #1a2235 !important;
    border-color: rgba(148, 163, 184, 0.2) !important;
}

/* ── Buttons ── */
.stButton>button {
    color: #e8ecf4 !important;
    border-color: rgba(148, 163, 184, 0.15) !important;
}

.stButton>button[kind="primary"],
.stButton>button[data-testid="stBaseButton-primary"] {
    background: linear-gradient(135deg, #06d6a0, #4cc9f0) !important;
    color: #0a0e1a !important;
    border: none !important;
}

/* ── Download button ── */
.stDownloadButton>button {
    background: linear-gradient(135deg, #06d6a0, #4cc9f0) !important;
    color: #0a0e1a !important;
    font-weight: 600 !important;
    border: none !important;
    border-radius: 12px !important;
}

.stDownloadButton>button:hover {
    transform: translateY(-2px) !important;
    box-shadow: 0 6px 20px rgba(6, 214, 160, 0.25) !important;
}

/* ── Expander ── */
[data-testid="stExpander"],
[data-testid="stExpander"]>div {
    background: #1a2235 !important;
    border-color: rgba(148, 163, 184, 0.1) !important;
    color: #e8ecf4 !important;
}

[data-testid="stExpander"] summary,
[data-testid="stExpander"] summary span,
[data-testid="stExpander"] p {
    color: #e8ecf4 !important;
}

/* ── Data frame / tables ── */
[data-testid="stDataFrame"],
[data-testid="stDataFrame"]>div,
.stDataFrame {
    background: #1a2235 !important;
    border-radius: 12px !important;
    overflow: hidden;
}

[data-testid="stTable"],
[data-testid="stTable"] table {
    background: #1a2235 !important;
    color: #e8ecf4 !important;
}

[data-testid="stTable"] th {
    background: #243049 !important;
    color: #e8ecf4 !important;
}

[data-testid="stTable"] td {
    background: #1a2235 !important;
    color: #e8ecf4 !important;
}

/* ── Alerts / info / warning / error ── */
[data-testid="stAlert"],
.stAlert {
    background: #1a2235 !important;
    border-color: rgba(148, 163, 184, 0.15) !important;
    color: #e8ecf4 !important;
}

.stAlert p,
.stAlert span {
    color: #e8ecf4 !important;
}

/* ── Spinner ── */
[data-testid="stSpinner"] {
    color: #e8ecf4 !important;
}

/* ── Progress bar ── */
.stProgress>div>div>div>div {
    background: linear-gradient(90deg, #06d6a0, #4cc9f0) !important;
}

/* ── Tabs ── */
.stTabs [data-baseweb="tab-list"] {
    background: transparent !important;
}

.stTabs [data-baseweb="tab"] {
    color: #94a3b8 !important;
}

.stTabs [aria-selected="true"] {
    color: #06d6a0 !important;
}

/* ── Metric ── */
[data-testid="stMetric"],
[data-testid="stMetricValue"],
[data-testid="stMetricLabel"] {
    color: #e8ecf4 !important;
}

/* ── Tooltip / popover ── */
[data-testid="stTooltipIcon"] {
    color: #94a3b8 !important;
}

/* ── Bottom page padding (removes white strip) ── */
.block-container {
    padding-bottom: 3rem !important;
}

footer,
.reportview-container .main footer {
    background: #0a0e1a !important;
    color: #64748b !important;
}

/* Hide Streamlit's default footer */
footer {
    visibility: hidden;
}

/* ── Plotly chart backgrounds ── */
.js-plotly-plot .plotly .main-svg {
    background: transparent !important;
}