:root {
    --bg: #f5f7fb;
    --surface: #ffffff;
    --surface-soft: #f8fafc;
    --border: #e2e8f0;

    --text: #172033;
    --text-soft: #64748b;
    --text-muted: #94a3b8;

    --primary: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-soft: #eff6ff;

    --success: #15803d;
    --success-soft: #f0fdf4;

    --shadow: 0 18px 50px rgba(15, 23, 42, 0.08);

    --radius: 18px;
    --radius-small: 12px;
}

* {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    margin: 0;
    font-family:
        Inter,
        ui-sans-serif,
        system-ui,
        -apple-system,
        BlinkMacSystemFont,
        "Segoe UI",
        sans-serif;

    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
}

button,
input,
select {
    font: inherit;
}

button {
    cursor: pointer;
}

.container {
    width: min(1120px, calc(100% - 32px));
    margin: 0 auto;
}

/* Header */

.site-header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
}

.header-inner {
    min-height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.logo {
    color: var(--text);
    text-decoration: none;
    font-weight: 800;
    font-size: 1.15rem;
    letter-spacing: -0.02em;
}

.header-badge {
    color: var(--primary);
    background: var(--primary-soft);
    padding: 7px 12px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 700;
}

/* Hero */

.hero {
    padding: 72px 0 48px;
}

.eyebrow {
    margin: 0 0 10px;
    color: var(--primary);
    font-size: 0.78rem;
    font-weight: 800;
    letter-spacing: 0.12em;
}

.hero h1 {
    margin: 0;
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    line-height: 1;
    letter-spacing: -0.055em;
}

.hero-text {
    max-width: 650px;
    margin: 22px 0 0;
    color: var(--text-soft);
    font-size: 1.08rem;
}

/* Calculator */

.calculator-section {
    padding-bottom: 70px;
}

.calculator-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 30px;
}

.calculator-top {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: 24px;
    align-items: end;
}

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

.field label,
.section-label {
    color: var(--text-soft);
    font-size: 0.78rem;
    font-weight: 800;
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

select,
input[type="number"],
input[type="search"] {
    width: 100%;
    border: 1px solid var(--border);
    border-radius: var(--radius-small);
    background: var(--surface);
    color: var(--text);
    outline: none;
    transition:
        border-color 0.2s ease,
        box-shadow 0.2s ease;
}

select {
    min-height: 50px;
    padding: 0 14px;
}

input[type="number"],
input[type="search"] {
    min-height: 50px;
    padding: 0 14px;
}

select:focus,
input:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.1);
}

.country-meta {
    min-width: 150px;
    text-align: right;
}

.meta-label {
    display: block;
    color: var(--text-muted);
    font-size: 0.75rem;
    margin-bottom: 3px;
}

.country-meta strong {
    font-size: 0.9rem;
}

/* Rate selection */

.rate-selection {
    margin-top: 34px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
}

.selected-rate {
    display: flex;
    align-items: baseline;
    gap: 10px;
    margin-top: 5px;
}

#selectedRate {
    font-size: 2rem;
    font-weight: 850;
    letter-spacing: -0.04em;
}

#selectedRateLabel {
    color: var(--text-soft);
    font-size: 0.9rem;
}

/* Standard rate */

.standard-rate-card {
    margin-top: 22px;
    padding: 20px 22px;
    border: 2px solid var(--primary);
    background: var(--primary-soft);
    border-radius: var(--radius);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
    cursor: pointer;
    transition:
        transform 0.15s ease,
        box-shadow 0.15s ease;
}

.standard-rate-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(37, 99, 235, 0.1);
}

.standard-rate-card.selected {
    box-shadow: 0 0 0 4px rgba(37, 99, 235, 0.12);
}

.rate-card-label {
    display: block;
    font-weight: 800;
    font-size: 1rem;
}

.rate-card-description {
    display: block;
    margin-top: 3px;
    color: var(--text-soft);
    font-size: 0.85rem;
}

.rate-card-value {
    flex: 0 0 auto;
    color: var(--primary);
    font-size: 2rem;
    font-weight: 850;
    letter-spacing: -0.04em;
}

/* Reduced rates */

.reduced-header {
    margin-top: 34px;
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 20px;
}

.reduced-header h2 {
    margin: 0;
    font-size: 1.35rem;
    letter-spacing: -0.025em;
}

.reduced-header p {
    margin: 4px 0 0;
    color: var(--text-soft);
    font-size: 0.88rem;
}

.search-wrapper {
    width: min(320px, 100%);
}

.rate-grid {
    margin-top: 18px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.rate-card {
    min-height: 150px;
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: var(--radius-small);
    background: var(--surface);
    cursor: pointer;
    text-align: left;
    transition:
        border-color 0.15s ease,
        transform 0.15s ease,
        box-shadow 0.15s ease;
}

.rate-card:hover {
    border-color: #bfdbfe;
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(15, 23, 42, 0.06);
}

.rate-card.selected {
    border-color: var(--primary);
    background: var(--primary-soft);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.08);
}

.rate-card-rate {
    color: var(--primary);
    font-size: 1.5rem;
    font-weight: 850;
    letter-spacing: -0.035em;
}

.rate-card-type {
    display: inline-block;
    margin-top: 4px;
    padding: 3px 7px;
    border-radius: 999px;
    background: var(--surface-soft);
    color: var(--text-soft);
    font-size: 0.7rem;
    font-weight: 800;
    text-transform: uppercase;
}

.rate-card-description {
    margin-top: 12px;
    color: var(--text);
    font-size: 0.85rem;
    line-height: 1.4;
}

.rate-card-comment {
    margin-top: 7px;
    color: var(--text-muted);
    font-size: 0.75rem;
    line-height: 1.4;
}

.empty-state {
    padding: 24px;
    border: 1px dashed var(--border);
    border-radius: var(--radius-small);
    color: var(--text-soft);
    text-align: center;
    background: var(--surface-soft);
}

.rate-grid .empty-state {
    grid-column: 1 / -1;
}

.hidden {
    display: none !important;
}

/* Calculator controls */

.calculator-controls {
    margin-top: 34px;
    padding-top: 30px;
    border-top: 1px solid var(--border);
}

.mode-switch {
    display: inline-flex;
    padding: 4px;
    border-radius: 10px;
    background: var(--surface-soft);
    border: 1px solid var(--border);
}

.mode-button {
    border: 0;
    background: transparent;
    color: var(--text-soft);
    border-radius: 8px;
    padding: 9px 14px;
    font-weight: 700;
}

.mode-button.active {
    background: var(--surface);
    color: var(--text);
    box-shadow: 0 2px 8px rgba(15, 23, 42, 0.08);
}

.amount-field {
    margin-top: 22px;
}

.amount-input-wrapper {
    position: relative;
}

.currency-symbol {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-soft);
    font-weight: 700;
    pointer-events: none;
}

.amount-input-wrapper input {
    padding-left: 42px;
    font-size: 1.15rem;
}

/* Results */

.results-panel {
    margin-top: 26px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

.result-item {
    padding: 20px;
    border: 1px solid var(--border);
    border-radius: var(--radius-small);
    background: var(--surface-soft);
}

.result-item span {
    display: block;
    color: var(--text-soft);
    font-size: 0.8rem;
    font-weight: 700;
}

.result-item strong {
    display: block;
    margin-top: 6px;
    font-size: 1.45rem;
    letter-spacing: -0.03em;
}

.vat-result {
    background: var(--success-soft);
}

.total-result {
    background: var(--primary-soft);
}

/* Status */

.status {
    margin-top: 18px;
    color: var(--text-soft);
    font-size: 0.8rem;
    text-align: center;
}

/* About */

.about-section {
    padding: 0 0 70px;
}

.about-card {
    padding: 28px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
}

.about-card h2 {
    margin: 5px 0 15px;
    font-size: 1.5rem;
}

.about-card p {
    max-width: 780px;
    color: var(--text-soft);
}

.source-note {
    font-size: 0.8rem;
}

/* Footer */

.site-footer {
    border-top: 1px solid var(--border);
    background: var(--surface);
}

.footer-inner {
    min-height: 70px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    color: var(--text-muted);
    font-size: 0.78rem;
}

/* Accessibility */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Responsive */

@media (max-width: 850px) {
    .rate-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 700px) {
    .hero {
        padding: 52px 0 34px;
    }

    .calculator-card {
        padding: 20px;
    }

    .calculator-top {
        grid-template-columns: 1fr;
    }

    .country-meta {
        text-align: left;
    }

    .reduced-header {
        align-items: stretch;
        flex-direction: column;
    }

    .search-wrapper {
        width: 100%;
    }

    .rate-grid {
        grid-template-columns: 1fr;
    }

    .results-panel {
        grid-template-columns: 1fr;
    }

    .footer-inner {
        padding: 18px 0;
        align-items: flex-start;
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .container {
        width: min(100% - 22px, 1120px);
    }

    .header-badge {
        display: none;
    }

    .standard-rate-card {
        align-items: flex-start;
        flex-direction: column;
    }

    .rate-card-value {
        font-size: 1.7rem;
    }

    .mode-switch {
        display: flex;
        width: 100%;
    }

    .mode-button {
        flex: 1;
    }
}