:root {
    --page-bg: #f4f7fb;
    --card-bg: #ffffff;
    --primary-soft: #eef4ff;
    --border-soft: #dce5f2;
    --text-main: #1f2937;
    --text-muted: #667085;
}

body {
    margin: 0;
    min-height: 100vh;
    background: linear-gradient(180deg, #eef4ff 0%, var(--page-bg) 38%, #ffffff 100%);
    color: var(--text-main);
    font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

.page-shell {
    width: min(1180px, calc(100% - 24px));
    margin: 0 auto;
    padding: 24px 0 32px;
}

.hero-card,
.tool-card,
.summary-card,
.result-card,
.footer-card {
    background: rgba(255, 255, 255, 0.94);
    border: 1px solid var(--border-soft);
    border-radius: 22px;
    padding: 24px;
    margin-bottom: 18px;
}

.display-title {
    font-size: clamp(1.8rem, 4vw, 3rem);
    font-weight: 800;
    letter-spacing: -0.04em;
    margin-bottom: 10px;
}

.lead {
    color: var(--text-muted);
    font-size: 1.05rem;
}

.language-panel {
    min-width: 180px;
}

.tool-card .input-group-text {
    background: var(--primary-soft);
    border-color: var(--border-soft);
}

.form-control,
.form-select,
.btn {
    border-radius: 14px;
}

.input-group-lg > .form-control,
.input-group-lg > .input-group-text {
    border-radius: 14px;
}

.input-group-lg > .input-group-text {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

.input-group-lg > .form-control {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.section-title {
    font-size: 1.25rem;
    font-weight: 800;
}

.mini-card {
    height: 100%;
    padding: 16px;
    border-radius: 18px;
    background: var(--primary-soft);
    border: 1px solid #dbe8ff;
}

.mini-card span {
    display: block;
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: 6px;
}

.mini-card strong {
    display: block;
    font-size: 1.05rem;
    word-break: break-word;
}

.result-table-wrap {
    border: 1px solid var(--border-soft);
    border-radius: 18px;
    overflow: auto;
}

.table thead th {
    background: #f8fafc;
    white-space: nowrap;
    color: #344054;
    font-size: 0.92rem;
}

.table tbody td {
    white-space: nowrap;
}

.note-text {
    color: var(--text-muted);
    white-space: normal;
    min-width: 180px;
}

.footer-card {
    background: transparent;
    border: 0;
    padding-top: 10px;
}

@media (max-width: 575.98px) {
    .page-shell {
        width: min(100% - 16px, 1180px);
        padding-top: 12px;
    }

    .hero-card,
    .tool-card,
    .summary-card,
    .result-card {
        border-radius: 18px;
        padding: 18px;
        margin-bottom: 14px;
    }

    .display-title {
        font-size: 1.72rem;
    }

    .lead {
        font-size: 0.98rem;
    }

    .btn-lg,
    .form-control-lg,
    .input-group-lg > .form-control,
    .input-group-lg > .input-group-text {
        font-size: 1rem;
        padding-top: 0.72rem;
        padding-bottom: 0.72rem;
    }

    .table tbody td,
    .table thead th {
        font-size: 0.9rem;
    }
}