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

:root {
    --bg: #0b111b;
    --bg-soft: #101927;
    --panel: rgba(14, 24, 38, 0.9);
    --panel-strong: rgba(18, 30, 47, 0.96);
    --border: rgba(148, 163, 184, 0.16);
    --border-strong: rgba(96, 165, 250, 0.26);
    --text: #e5eef9;
    --muted: #94a3b8;
    --muted-strong: #c3d0df;
    --accent: #38bdf8;
    --accent-strong: #0ea5e9;
    --accent-warm: #f59e0b;
    --success: #22c55e;
    --danger: #f87171;
    --shadow: 0 24px 80px rgba(2, 8, 23, 0.42);
}

body {
    font-family: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    color: var(--text);
    min-height: 100vh;
    background:
        radial-gradient(circle at top left, rgba(14, 165, 233, 0.22), transparent 30%),
        radial-gradient(circle at top right, rgba(245, 158, 11, 0.16), transparent 24%),
        linear-gradient(160deg, #071018 0%, #0c1524 46%, #121d2f 100%);
}

#app {
    max-width: 1440px;
    margin: 0 auto;
    padding: 28px;
    display: grid;
    grid-template-columns: 360px minmax(0, 1fr);
    gap: 22px;
}

#sidebar,
.surface {
    backdrop-filter: blur(18px);
    background: linear-gradient(180deg, rgba(14, 24, 38, 0.95), rgba(12, 20, 31, 0.92));
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
}

#sidebar {
    border-radius: 28px;
    padding: 24px;
    position: sticky;
    top: 20px;
    align-self: start;
}

.site-logo {
    display: inline-flex;
    margin-bottom: 24px;
}

.site-logo img {
    height: 36px;
}

.hero-copy {
    margin-bottom: 20px;
}

.eyebrow {
    font-size: 0.78rem;
    letter-spacing: 0.16em;
    text-transform: uppercase;
    color: #7dd3fc;
    margin-bottom: 10px;
}

.hero-copy h1,
.section-heading h2,
.mini-heading h3 {
    font-weight: 700;
}

.hero-copy h1 {
    font-size: 2rem;
    line-height: 1.05;
    margin-bottom: 10px;
}

.subtitle {
    color: var(--muted);
    line-height: 1.55;
}

.drop-zone {
    position: relative;
    overflow: hidden;
    border: 1px dashed rgba(125, 211, 252, 0.4);
    background:
        linear-gradient(160deg, rgba(56, 189, 248, 0.12), rgba(14, 165, 233, 0.03)),
        rgba(8, 15, 26, 0.75);
    border-radius: 22px;
    padding: 28px 20px;
    cursor: pointer;
    margin-bottom: 18px;
}

.drop-zone.dragover {
    border-color: rgba(125, 211, 252, 0.88);
    background:
        linear-gradient(160deg, rgba(56, 189, 248, 0.18), rgba(14, 165, 233, 0.08)),
        rgba(8, 15, 26, 0.85);
}

.drop-zone::after {
    content: "";
    position: absolute;
    inset: auto -10% -36% 42%;
    height: 180px;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.22), transparent 62%);
    pointer-events: none;
}

.drop-zone-content {
    position: relative;
    z-index: 1;
    text-align: left;
}

.drop-zone svg {
    color: #7dd3fc;
    margin-bottom: 16px;
}

.drop-zone p {
    font-size: 1rem;
    margin-bottom: 8px;
}

.drop-zone strong {
    color: #f8fafc;
}

.hint,
.panel-note,
.toggle-copy small,
.feature-card p,
.field span,
.run-label,
.result-label {
    color: var(--muted);
}

.hint {
    display: block;
    line-height: 1.55;
    font-size: 0.9rem;
}

.drop-zone input[type="file"] {
    display: none;
}

.file-info {
    position: relative;
    z-index: 1;
    margin-top: 16px;
    padding: 12px 14px;
    border-radius: 14px;
    background: rgba(125, 211, 252, 0.12);
    border: 1px solid rgba(125, 211, 252, 0.18);
    color: #d7f2ff;
    font-size: 0.9rem;
    line-height: 1.5;
}

.panel {
    background: rgba(9, 17, 27, 0.62);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 18px;
    margin-top: 16px;
}

.panel-header,
.mini-heading,
.section-heading,
.progress-meta,
.download-actions,
.action-stack {
    display: flex;
    align-items: center;
}

.panel-header,
.mini-heading,
.section-heading {
    justify-content: space-between;
}

.panel-header h2,
.settings-card h3,
.mini-heading h3 {
    font-size: 1rem;
}

.stats-grid,
.run-grid,
.results-grid,
.feature-grid,
.settings-layout {
    display: grid;
    gap: 14px;
}

.stats-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 16px;
}

.stat-card,
.run-card,
.result-card,
.feature-card,
.settings-card,
.results-panel {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 18px;
}

.stat-card,
.run-card,
.result-card {
    padding: 14px;
}

.stat-value,
.run-card strong,
.result-card strong {
    display: block;
    font-size: 1.2rem;
    font-weight: 700;
    margin-bottom: 6px;
}

.stat-label {
    color: var(--muted);
    font-size: 0.82rem;
    text-transform: uppercase;
    letter-spacing: 0.08em;
}

.queue-list,
.log-list,
.results-list {
    margin-top: 14px;
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-height: 28px;
}

.queue-list:empty::before,
.log-list:empty::before,
.results-list:empty::before {
    content: "Nothing here yet.";
    color: var(--muted);
    font-size: 0.92rem;
}

.summary-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.summary-bar:empty::before {
    content: "Upload files to generate an analysis summary.";
    color: var(--muted);
    font-size: 0.92rem;
}

.analysis-lists {
    display: grid;
    gap: 12px;
    margin-top: 18px;
}

.analysis-lists:empty::before {
    content: "Detailed file analysis will appear here.";
    color: var(--muted);
    font-size: 0.92rem;
}

.analysis-lists > * {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 14px;
}

.pill,
.status-chip {
    border-radius: 999px;
    padding: 6px 10px;
    font-size: 0.74rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
}

.pill {
    background: rgba(56, 189, 248, 0.14);
    color: #7dd3fc;
}

.pill.muted {
    background: rgba(148, 163, 184, 0.14);
    color: var(--muted);
}

.status-chip {
    background: rgba(14, 165, 233, 0.12);
    color: #7dd3fc;
}

.default-chip {
    background: rgba(245, 158, 11, 0.14);
    color: #fbbf24;
}

.success-chip {
    background: rgba(34, 197, 94, 0.14);
    color: #4ade80;
}

.action-stack {
    gap: 10px;
    flex-wrap: wrap;
}

.btn {
    appearance: none;
    border: 0;
    border-radius: 14px;
    padding: 12px 16px;
    font-weight: 700;
    font-size: 0.94rem;
    cursor: pointer;
    transition: transform 0.18s ease, opacity 0.18s ease, box-shadow 0.18s ease;
}

.btn:hover {
    transform: translateY(-1px);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent) 0%, var(--accent-strong) 100%);
    color: #04131f;
    box-shadow: 0 12px 28px rgba(14, 165, 233, 0.28);
}

.btn-secondary {
    background: rgba(148, 163, 184, 0.12);
    color: var(--text);
    border: 1px solid rgba(148, 163, 184, 0.2);
}

#main-content {
    display: flex;
    flex-direction: column;
    gap: 22px;
}

.surface {
    border-radius: 30px;
    padding: 26px;
}

.empty-state {
    position: relative;
    overflow: hidden;
}

.empty-graphic {
    position: relative;
    width: fit-content;
    margin-bottom: 20px;
}

.empty-graphic svg {
    position: relative;
    z-index: 1;
    color: #dbeafe;
}

.empty-orb {
    position: absolute;
    inset: -18px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(56, 189, 248, 0.34), transparent 68%);
}

.empty-state h2 {
    font-size: 2.15rem;
    max-width: 680px;
    margin-bottom: 12px;
}

.empty-state > p {
    color: var(--muted-strong);
    max-width: 760px;
    line-height: 1.65;
    margin-bottom: 24px;
}

.feature-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.feature-card {
    padding: 18px;
}

.feature-kicker {
    display: inline-flex;
    margin-bottom: 12px;
    color: #7dd3fc;
    font-size: 0.75rem;
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.feature-card strong {
    display: block;
    font-size: 1rem;
    margin-bottom: 8px;
}

.feature-card p {
    line-height: 1.6;
    font-size: 0.94rem;
}

.section-heading {
    gap: 12px;
    margin-bottom: 20px;
}

.section-heading h2 {
    font-size: 1.5rem;
    margin-top: 2px;
}

.settings-layout {
    grid-template-columns: minmax(0, 1.1fr) minmax(0, 1fr);
}

.settings-card {
    padding: 18px;
}

.setting-grid,
.advanced-grid {
    display: grid;
    gap: 14px;
    margin-top: 16px;
}

.setting-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
}

.advanced-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

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

.field span {
    font-size: 0.84rem;
}

.field input {
    width: 100%;
    padding: 12px 13px;
    border-radius: 12px;
    border: 1px solid rgba(148, 163, 184, 0.22);
    background: rgba(3, 10, 18, 0.62);
    color: var(--text);
    font: inherit;
}

.advanced-panel {
    margin-top: 16px;
    border: 1px solid var(--border);
    border-radius: 20px;
    overflow: hidden;
    background: rgba(9, 17, 27, 0.56);
}

.advanced-panel summary {
    list-style: none;
    cursor: pointer;
    padding: 18px 20px;
    font-weight: 700;
}

.advanced-panel summary::-webkit-details-marker {
    display: none;
}

.advanced-panel[open] summary {
    border-bottom: 1px solid var(--border);
}

.advanced-grid {
    padding: 18px;
}

.toggle-list,
.toggle-row {
    display: flex;
    flex-direction: column;
}

.toggle-list {
    gap: 12px;
    margin-top: 16px;
}

.toggle-row {
    flex-direction: row;
    gap: 12px;
    align-items: flex-start;
    padding: 14px;
    border-radius: 16px;
    background: rgba(6, 12, 20, 0.48);
    border: 1px solid rgba(148, 163, 184, 0.12);
}

.toggle-row input {
    margin-top: 2px;
    width: 16px;
    height: 16px;
    accent-color: var(--accent);
}

.toggle-copy {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.toggle-copy strong {
    font-size: 0.96rem;
}

.toggle-copy small {
    line-height: 1.5;
    font-size: 0.84rem;
}

.default-on {
    border-color: rgba(245, 158, 11, 0.24);
    background: linear-gradient(180deg, rgba(245, 158, 11, 0.08), rgba(6, 12, 20, 0.42));
}

.progress-shell {
    padding: 18px;
    border-radius: 20px;
    background: rgba(7, 13, 22, 0.68);
    border: 1px solid var(--border);
}

.progress-rail {
    height: 14px;
    border-radius: 999px;
    background: rgba(148, 163, 184, 0.12);
    overflow: hidden;
    margin-bottom: 12px;
}

.progress-fill {
    width: 0;
    height: 100%;
    border-radius: inherit;
    background: linear-gradient(90deg, var(--accent), var(--accent-warm));
}

.progress-meta {
    justify-content: space-between;
    gap: 12px;
}

.run-grid,
.results-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: 16px;
}

.results-columns {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 14px;
    margin-top: 18px;
}

.results-panel {
    padding: 16px;
}

.download-actions {
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 18px;
}

.hidden {
    display: none !important;
}

@media (max-width: 1180px) {
    #app {
        grid-template-columns: 1fr;
    }

    #sidebar {
        position: static;
    }

    .feature-grid,
    .settings-layout,
    .results-columns {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 760px) {
    #app {
        padding: 16px;
        gap: 16px;
    }

    #sidebar,
    .surface {
        border-radius: 24px;
        padding: 18px;
    }

    .hero-copy h1,
    .empty-state h2 {
        font-size: 1.7rem;
    }

    .stats-grid,
    .run-grid,
    .results-grid,
    .setting-grid,
    .advanced-grid {
        grid-template-columns: 1fr;
    }

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