:root {
    --page-bg: #f7f5fb;
    --surface: rgba(255, 255, 255, 0.9);
    --surface-strong: #ffffff;
    --surface-muted: #f4effc;
    --border: rgba(102, 51, 153, 0.14);
    --border-strong: rgba(102, 51, 153, 0.3);
    --text: #221a31;
    --text-muted: #5f5673;
    --accent: rebeccapurple;
    --accent-soft: #ede3fb;
    --accent-strong: #4f2382;
    --success: #2f8f5b;
    --danger: #c0395f;
    --shadow: 0 24px 60px rgba(60, 26, 94, 0.12);
    --radius-xl: 28px;
    --radius-lg: 20px;
    --radius-md: 14px;
    --content-width: 1600px;
    --header-height: 76px;
    --footer-height: 40px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: "Aptos", "Segoe UI Variable Display", "Segoe UI", sans-serif;
    font-size: 14px;
    color: var(--text);
    background:
        radial-gradient(circle at top left, rgba(102, 51, 153, 0.14), transparent 28%),
        radial-gradient(circle at top right, rgba(153, 205, 255, 0.18), transparent 26%),
        linear-gradient(180deg, #fbfaff 0%, #f7f5fb 48%, #f1edf8 100%);
}

a {
    color: inherit;
}

.site-shell {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.site-header,
.site-footer {
    position: sticky;
    z-index: 20;
    backdrop-filter: blur(18px);
    background: rgba(255, 255, 255, 0.86);
}

.site-header {
    top: 0;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 10px 30px rgba(80, 47, 116, 0.08);
}

.site-footer {
    bottom: 0;
    margin-top: auto;
    border-top: 1px solid var(--border);
    box-shadow: 0 -10px 30px rgba(80, 47, 116, 0.08);
}

.header-inner,
.footer-inner,
.main-inner {
    width: min(var(--content-width), 100%);
    margin: 0 auto;
    padding-inline: clamp(10px, 1.2vw, 16px);
}

.header-inner {
    min-height: var(--header-height);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 14px;
    padding: 10px 0;
}

.brand {
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 0;
}

.brand-mark {
    display: block;
    flex-shrink: 0;
    width: auto;
    max-width: 100%;
    height: min(40px, calc(var(--header-height) - 24px));
    object-fit: contain;
}

.brand-copy {
    min-width: 0;
}

h1 {
    margin: 0;
    font-size: clamp(1.14rem, 1.55vw, 1.62rem);
    line-height: 1.1;
    letter-spacing: -0.03em;
}

.brand-copy p,
.header-note,
.hero-copy p,
.panel-intro,
.footer-inner,
.helper-text,
.inline-message {
    color: var(--text-muted);
}

.brand-copy p,
.header-note {
    margin: 2px 0 0;
    font-size: 0.84rem;
}

.header-note {
    max-width: 360px;
    text-align: right;
}

main {
    flex: 1;
    padding: 12px 0 14px;
}

.main-inner {
    display: grid;
    gap: 12px;
    align-content: start;
}

.hero {
    display: grid;
    grid-template-columns: minmax(0, 1.25fr) minmax(280px, 0.75fr);
    gap: 12px;
    align-items: stretch;
}

.hero-card,
.panel,
.results-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow);
}

.hero-card {
    position: relative;
    overflow: hidden;
    padding: clamp(14px, 1.8vw, 20px);
    background:
        linear-gradient(145deg, rgba(255, 255, 255, 0.95), rgba(244, 239, 252, 0.96)),
        var(--surface);
}

.hero-card::after {
    content: "";
    position: absolute;
    inset: auto -80px -100px auto;
    width: 160px;
    height: 160px;
    border-radius: 999px;
    background: radial-gradient(circle, rgba(102, 51, 153, 0.14), transparent 66%);
    pointer-events: none;
}

.hero-copy {
    max-width: 60ch;
}

.eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 5px 9px;
    border-radius: 999px;
    background: var(--accent-soft);
    color: var(--accent-strong);
    font-size: 0.68rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.hero-copy h2,
.panel h2,
.results-card h2 {
    margin: 10px 0 6px;
    font-size: clamp(1.04rem, 1.32vw, 1.36rem);
    line-height: 1.15;
    letter-spacing: -0.03em;
}

.hero-copy p,
.panel-intro {
    margin: 0;
    font-size: 0.88rem;
    line-height: 1.45;
}

.feature-list {
    margin: 12px 0 0;
    padding: 0;
    list-style: none;
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 8px;
}

.feature-list li {
    padding: 9px 11px;
    border: 1px solid rgba(102, 51, 153, 0.12);
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.82);
    line-height: 1.35;
    font-size: 0.84rem;
}

.feature-list strong {
    display: block;
    margin-bottom: 4px;
    color: var(--text);
    font-weight: 700;
}

.hero-aside {
    display: grid;
    gap: 8px;
}

.stat-card {
    padding: 11px 12px;
    border-radius: var(--radius-lg);
    background: linear-gradient(180deg, var(--surface-strong), var(--surface-muted));
    border: 1px solid var(--border);
}

.stat-card strong {
    display: block;
    margin-bottom: 5px;
    color: var(--accent-strong);
    font-size: 0.72rem;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.stat-card span {
    display: block;
    font-size: 1.12rem;
    font-weight: 700;
    line-height: 1.1;
}

.stat-card p {
    margin: 5px 0 0;
    line-height: 1.35;
    font-size: 0.82rem;
    color: var(--text-muted);
}

.workspace-grid {
    display: grid;
    grid-template-columns: minmax(280px, 0.88fr) minmax(420px, 1.45fr);
    gap: 12px;
    align-items: start;
}

.panel,
.results-card {
    padding: clamp(12px, 1.4vw, 18px);
}

.panel {
    display: grid;
    gap: 12px;
    align-content: start;
}

.panel-section {
    display: grid;
    gap: 6px;
}

label {
    display: block;
    font-weight: 700;
    color: var(--text);
    font-size: 0.88rem;
}

input[type="file"],
input[type="number"] {
    width: 100%;
    margin-top: 4px;
    border: 1px solid var(--border-strong);
    border-radius: 12px;
    background: #fff;
    color: var(--text);
    padding: 9px 11px;
    font: inherit;
    transition: border-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
}

.upload-dropzone {
    position: relative;
    border: 2px dashed rgba(102, 51, 153, 0.28);
    border-radius: 16px;
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(248, 244, 253, 0.92));
    padding: 16px 14px;
    transition: border-color 0.2s ease, background-color 0.2s ease, box-shadow 0.2s ease, transform 0.2s ease;
    cursor: pointer;
}

.upload-dropzone:hover {
    border-color: rgba(102, 51, 153, 0.48);
}

.upload-dropzone.drag-active {
    border-color: var(--accent);
    background: linear-gradient(180deg, rgba(255, 255, 255, 1), rgba(237, 227, 251, 0.96));
    box-shadow: 0 0 0 4px rgba(102, 51, 153, 0.1);
    transform: translateY(-1px);
}

.upload-dropzone input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
    margin: 0;
    padding: 0;
}

.upload-dropzone-copy {
    display: grid;
    gap: 4px;
    justify-items: center;
    text-align: center;
    pointer-events: none;
}

.upload-dropzone-copy strong {
    font-size: 0.92rem;
    color: var(--accent-strong);
}

.upload-dropzone-copy span {
    font-size: 0.82rem;
    color: var(--text-muted);
}

input[type="file"]:focus,
input[type="number"]:focus,
button:focus,
.split-option input:focus,
.upload-dropzone:focus-within {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(102, 51, 153, 0.12);
}

.split-options {
    display: grid;
    gap: 8px;
    padding: 10px;
    border-radius: var(--radius-lg);
    background: var(--surface-muted);
    border: 1px solid var(--border);
}

.split-options-head {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    align-items: baseline;
}

.split-options-title {
    font-weight: 700;
    color: var(--text);
}

.split-options-note {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.split-options-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.split-option {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 10px;
    border: 1px solid var(--border);
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.9);
    font-weight: 500;
    font-size: 0.82rem;
    cursor: pointer;
}

.split-option input {
    margin: 0;
    accent-color: var(--accent);
}

.ring-group {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
    align-items: end;
}

.ring-input label {
    margin: 0;
    font-size: 0.78rem;
    color: var(--text-muted);
}

.ring-input input {
    margin-top: 3px;
}

.total {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 36px;
    padding: 0 12px;
    border-radius: 12px;
    font-size: 0.84rem;
    background: #fff;
    border: 1px solid var(--border);
    font-weight: 700;
    transition: color 0.2s ease, border-color 0.2s ease, background-color 0.2s ease;
}

.total.red {
    color: var(--danger);
    border-color: rgba(192, 57, 95, 0.26);
    background: rgba(192, 57, 95, 0.06);
}

.total.green {
    color: var(--success);
    border-color: rgba(47, 143, 91, 0.28);
    background: rgba(47, 143, 91, 0.08);
}

.inline-message {
    display: none;
    padding: 8px 10px;
    border-radius: 12px;
    background: rgba(192, 57, 95, 0.08);
    color: var(--danger);
    font-weight: 700;
    font-size: 0.82rem;
}

.button-row {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

button {
    border: 0;
    border-radius: 12px;
    padding: 10px 13px;
    font: inherit;
    font-weight: 700;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease, opacity 0.2s ease;
}

button:hover:not(:disabled) {
    transform: translateY(-1px);
}

.primary-btn {
    background: linear-gradient(135deg, var(--accent) 0%, #7c4bb3 100%);
    color: #fff;
    box-shadow: 0 18px 32px rgba(102, 51, 153, 0.24);
}

.secondary-btn {
    background: #fff;
    color: var(--accent-strong);
    border: 1px solid rgba(102, 51, 153, 0.24);
}

button:disabled {
    opacity: 0.45;
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

.results-card {
    min-height: 100%;
}

.results-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 4px;
}

.results-header p {
    margin: 0;
    color: var(--text-muted);
    max-width: 60ch;
    line-height: 1.4;
    font-size: 0.84rem;
}

.table-zone {
    margin-top: 10px;
    display: grid;
    gap: 12px;
}

.table-zone h3 {
    margin: 0 0 6px;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--accent-strong);
}

.table-zone table {
    width: 100%;
    min-width: 620px;
    border-collapse: separate;
    border-spacing: 0;
    overflow: hidden;
    border: 1px solid var(--border);
    border-radius: 18px;
    background: #fff;
}

th,
td {
    padding: 8px 9px;
    text-align: center;
    border-bottom: 1px solid rgba(102, 51, 153, 0.08);
    border-right: 1px solid rgba(102, 51, 153, 0.08);
}

th:last-child,
td:last-child {
    border-right: 0;
}

tr:last-child td {
    border-bottom: 0;
}

th {
    background: linear-gradient(135deg, var(--accent) 0%, #7b4ab0 100%);
    color: #fff;
    font-weight: 700;
    position: sticky;
    top: 0;
}

th.total-cell {
    background: linear-gradient(135deg, var(--accent) 0%, #7b4ab0 100%) !important;
    color: #fff !important;
}

tbody tr:nth-child(even) td {
    background: #fcfbff;
}

.total-cell {
    background-color: var(--accent-soft) !important;
    color: var(--accent-strong) !important;
    font-weight: 700 !important;
}

.table-scroll {
    overflow: auto;
    padding-bottom: 4px;
}

.table-empty {
    padding: 14px;
    border: 1px dashed rgba(102, 51, 153, 0.22);
    border-radius: var(--radius-lg);
    background: linear-gradient(180deg, rgba(255, 255, 255, 0.7), rgba(237, 227, 251, 0.4));
    color: var(--text-muted);
    line-height: 1.45;
    font-size: 0.84rem;
}

.footer-inner {
    min-height: var(--footer-height);
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 16px;
    padding: 4px 0;
    font-size: 0.84rem;
}

.footer-inner a {
    text-decoration: none;
}

.footer-inner a:hover {
    color: var(--accent-strong);
}

@media (max-width: 1120px) {

    .hero,
    .workspace-grid {
        grid-template-columns: 1fr;
    }

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

    .header-note {
        text-align: left;
        max-width: none;
    }

    .feature-list {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 900px) {

    .header-inner,
    .footer-inner,
    .main-inner {
        padding-inline: 14px;
    }

    .hero-card,
    .panel,
    .results-card {
        border-radius: 24px;
    }

    .hero-card,
    .panel,
    .results-card {
        padding: 16px;
    }

    .feature-list {
        grid-template-columns: 1fr;
    }

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

    .upload-dropzone {
        padding: 18px 14px;
    }
}

@media (max-width: 760px) {
    body {
        font-size: 13px;
    }

    main {
        padding: 10px 0 16px;
    }

    .header-inner,
    .footer-inner,
    .main-inner {
        padding-inline: 14px;
    }

    .hero-card,
    .panel,
    .results-card {
        border-radius: 20px;
        padding: 14px;
    }

    .feature-list {
        grid-template-columns: 1fr;
    }

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

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

    .button-row {
        flex-direction: column;
    }

    button {
        width: 100%;
    }

    .footer-inner {
        justify-content: flex-end;
    }
}

@media (max-width: 560px) {

    .header-inner,
    .footer-inner,
    .main-inner {
        padding-inline: 12px;
    }

    .brand {
        align-items: flex-start;
    }

    .hero-card,
    .panel,
    .results-card {
        padding: 12px;
        border-radius: 18px;
    }

    .upload-dropzone {
        padding: 16px 12px;
    }

    .upload-dropzone-copy strong {
        font-size: 0.88rem;
    }

    .upload-dropzone-copy span,
    .results-header p,
    .table-empty,
    .panel-intro,
    .hero-copy p {
        font-size: 0.82rem;
    }

    .ring-group {
        grid-template-columns: 1fr;
    }

    .button-row {
        gap: 6px;
    }
}