@import url("https://fonts.googleapis.com/css2?family=Manrope:wght@400;500;600;700;800&family=Sora:wght@600;700;800&display=swap");

:root {
    --bg: #eef3ef;
    --ink: #152238;
    --muted: #5a6a7f;
    --panel: rgba(255, 255, 255, 0.88);
    --line: rgba(36, 71, 104, 0.15);
    --line-strong: rgba(25, 52, 79, 0.25);
    --brand: #0d7a76;
    --brand-dark: #0a5957;
    --alt: #1458d6;
    --success: #1b8f63;
    --danger: #b13a2f;
    --radius: 20px;
    --shadow: 0 18px 56px rgba(26, 45, 66, 0.13);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    background: linear-gradient(165deg, #edf2ee 0%, #f7fbff 52%, #eef6f3 100%);
    color: var(--ink);
    font-family: "Manrope", "Segoe UI", sans-serif;
    position: relative;
    overflow-x: hidden;
}

.bg-grid {
    position: fixed;
    inset: 0;
    z-index: 0;
    pointer-events: none;
    background:
        linear-gradient(to right, rgba(31, 67, 106, 0.05) 1px, transparent 1px) 0 0 / 42px 42px,
        linear-gradient(to bottom, rgba(31, 67, 106, 0.05) 1px, transparent 1px) 0 0 / 42px 42px;
    mask-image: radial-gradient(circle at 50% 35%, #000 25%, transparent 85%);
}

.bg-orb {
    position: fixed;
    border-radius: 999px;
    filter: blur(42px);
    pointer-events: none;
    z-index: 0;
}

.orb-a {
    width: 420px;
    height: 420px;
    background: rgba(26, 163, 133, 0.18);
    top: -140px;
    right: -120px;
}

.orb-b {
    width: 360px;
    height: 360px;
    background: rgba(24, 91, 205, 0.13);
    bottom: -120px;
    left: -110px;
}

.shell {
    max-width: 1180px;
    margin: 0 auto;
    padding: 26px 16px 38px;
    display: grid;
    gap: 16px;
    position: relative;
    z-index: 1;
}

.shell > * {
    opacity: 0;
    transform: translateY(10px);
    animation: reveal 0.6s ease forwards;
}

.shell > *:nth-child(2) { animation-delay: 0.05s; }
.shell > *:nth-child(3) { animation-delay: 0.1s; }
.shell > *:nth-child(4) { animation-delay: 0.15s; }
.shell > *:nth-child(5) { animation-delay: 0.2s; }
.shell > *:nth-child(6) { animation-delay: 0.25s; }
.shell > *:nth-child(7) { animation-delay: 0.3s; }

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

.surface {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    backdrop-filter: blur(8px);
    padding: 18px;
}

.hero {
    padding: 22px;
    background:
        linear-gradient(130deg, rgba(13, 122, 118, 0.09), rgba(20, 88, 214, 0.07)),
        var(--panel);
}

.eyebrow {
    margin: 0;
    font-family: "Sora", "Segoe UI", sans-serif;
    letter-spacing: 0.09em;
    text-transform: uppercase;
    font-size: 0.74rem;
    color: var(--brand-dark);
    font-weight: 700;
}

h1,
h2,
h3 {
    font-family: "Sora", "Segoe UI", sans-serif;
    letter-spacing: -0.02em;
}

h1 {
    margin: 10px 0 10px;
    line-height: 1.1;
    font-size: clamp(1.75rem, 3.2vw, 2.7rem);
    max-width: 21ch;
}

h2 {
    margin: 0;
    font-size: 1.15rem;
}

h3 {
    margin: 0 0 6px;
    color: var(--muted);
    font-size: 0.76rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

p {
    margin: 0;
    line-height: 1.45;
}

.hero-copy {
    max-width: 58ch;
    color: var(--muted);
}

.hero-links {
    margin-top: 14px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.hero-links a {
    text-decoration: none;
    font-size: 0.9rem;
    color: var(--ink);
    border: 1px solid var(--line);
    border-radius: 999px;
    padding: 7px 12px;
    background: rgba(255, 255, 255, 0.74);
    transition: border-color 0.18s ease, transform 0.18s ease;
}

.hero-links a:hover {
    border-color: var(--line-strong);
    transform: translateY(-1px);
}

.section-head {
    display: grid;
    gap: 3px;
    margin-bottom: 12px;
}

.section-head p {
    color: var(--muted);
    font-size: 0.92rem;
}

.upload-shell {
    border: 1px dashed var(--line-strong);
    border-radius: 14px;
    background: rgba(247, 251, 255, 0.8);
    padding: 14px;
    display: grid;
    gap: 10px;
}

.upload-actions {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.selected-file {
    font-size: 0.9rem;
    color: var(--muted);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
    gap: 12px;
}

.form-grid.compact {
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
}

label {
    display: grid;
    gap: 6px;
}

label span {
    color: var(--muted);
    font-size: 0.86rem;
    font-weight: 700;
}

input,
select,
button {
    font: inherit;
}

input,
select {
    width: 100%;
    border: 1px solid var(--line);
    border-radius: 11px;
    padding: 10px 11px;
    background: rgba(255, 255, 255, 0.95);
    color: var(--ink);
    transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

input:focus,
select:focus {
    outline: none;
    border-color: rgba(13, 122, 118, 0.45);
    box-shadow: 0 0 0 3px rgba(13, 122, 118, 0.14);
}

.action-row {
    display: flex;
    gap: 10px;
    align-items: end;
}

.form-grid .action-row {
    grid-column: 1 / -1;
}

button {
    border: 1px solid transparent;
    border-radius: 11px;
    padding: 10px 14px;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.14s ease, filter 0.14s ease, border-color 0.14s ease;
}

button:hover {
    transform: translateY(-1px);
    filter: saturate(1.03);
}

#uploadBtn,
#calculate-btn,
#submitWithGroundTruthBtn {
    background: linear-gradient(135deg, var(--brand), var(--brand-dark));
    color: #fff;
}

#analyzeBtn {
    background: linear-gradient(135deg, var(--alt), #1b48aa);
    color: #fff;
}

#analyzeBtn:disabled {
    opacity: 0.58;
    cursor: not-allowed;
    transform: none;
}

button.secondary {
    background: rgba(255, 255, 255, 0.9);
    color: var(--ink);
    border-color: var(--line);
}

.helper-text {
    margin-top: 9px;
    color: var(--muted);
    font-size: 0.87rem;
}

.status-box {
    min-height: 1.9rem;
    border-radius: 10px;
    border: 1px solid #d2deeb;
    padding: 8px 10px;
    background: #eff5fd;
    color: #35557b;
    font-size: 0.88rem;
}

.status-box.info {
    border-color: #c8d9ef;
    background: #eaf2fd;
    color: #2d4e75;
}

.status-box.success {
    border-color: #bcdfd0;
    background: #e8f8f0;
    color: #0e5f42;
}

.status-box.error {
    border-color: #f0c4bf;
    background: #fbeceb;
    color: #8e2a1f;
}

.error-box {
    margin-bottom: 11px;
    border: 1px solid #f0c4bf;
    background: #fbeceb;
    color: #8e2a1f;
    border-radius: 10px;
    padding: 10px 12px;
    font-size: 0.9rem;
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(175px, 1fr));
    gap: 10px;
}

.metric-card {
    border: 1px solid var(--line);
    border-radius: 12px;
    padding: 11px;
    background: rgba(255, 255, 255, 0.95);
}

.metric-card p {
    font-size: 1.06rem;
    font-weight: 800;
}

.metric-card.highlight {
    background: linear-gradient(140deg, rgba(22, 141, 125, 0.08), rgba(15, 122, 118, 0.03));
    border-color: rgba(16, 129, 119, 0.34);
}

.workspace {
    display: grid;
    grid-template-columns: 1.05fr 1fr;
    gap: 14px;
}

.chart-surface canvas {
    width: 100%;
    max-width: 100%;
    border: 1px solid var(--line);
    border-radius: 13px;
    background: #fff;
    min-height: 290px;
}

.panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 10px;
}

.table-wrap {
    border: 1px solid var(--line);
    border-radius: 12px;
    overflow: auto;
    background: rgba(255, 255, 255, 0.96);
}

table {
    width: 100%;
    border-collapse: collapse;
    min-width: 900px;
}

thead {
    background: #eef4ff;
}

th,
td {
    border-bottom: 1px solid #e3ecf8;
    padding: 9px 10px;
    font-size: 0.84rem;
    white-space: nowrap;
    text-align: right;
}

th:first-child,
th:nth-child(2),
td:first-child,
td:nth-child(2) {
    text-align: left;
}

tbody tr:hover {
    background: #f8fbff;
}

.hidden {
    display: none !important;
}

.file-input-hidden {
    position: absolute;
    width: 0;
    height: 0;
    opacity: 0;
    pointer-events: none;
}

@media (max-width: 980px) {
    .workspace {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 740px) {
    .shell {
        padding: 18px 12px 30px;
    }

    .surface {
        border-radius: 16px;
        padding: 14px;
    }

    .action-row,
    .upload-actions {
        flex-direction: column;
        align-items: stretch;
    }

    .hero-links {
        gap: 8px;
    }

    h1 {
        font-size: clamp(1.5rem, 7vw, 2rem);
    }
}