:root {
            --bg-deep:      #0b1622;
            --bg-body:      #0f1d2e;
            --bg-card:      #162438;
            --bg-input:     #1a2b40;
            --border:       #233652;
            --border-hover: #2e4a6e;
            --accent:       #4a90e2;
            --accent-glow:  rgba(74,144,226,0.18);
            --accent-2:     #3dd68c;
            --accent-warn:  #e2954a;
            --accent-red:   #e24a4a;
            --text-main:    #e8edf3;
            --text-muted:   #8294a8;
            --text-dim:     #4e6278;
            --radius:       14px;
            --radius-sm:    8px;
            --transition:   0.25s cubic-bezier(0.4,0,0.2,1);
			--font-oxygen: "Oxygen", sans-serif;
        }

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

        html { scroll-behavior: smooth; }
        .logo-img{ max-width: 220px; width: 100%; }
        img { max-width: 100%; height: auto; }
        body {
            background-color: var(--bg-body);
            color: var(--text-main);
            font-family: 'DM Sans', sans-serif;
            min-height: 100vh;
            display: flex;
            flex-direction: column;
            background-image:
                radial-gradient(ellipse 80% 50% at 50% -20%, rgba(74,144,226,0.07) 0%, transparent 70%),
                radial-gradient(ellipse 40% 30% at 90% 80%, rgba(61,214,140,0.04) 0%, transparent 60%);
        }

        /* ── HEADER ─────────────────────────────────────────────── */
        header {
            background: var(--bg-deep);
            border-bottom: 1px solid var(--border);
            padding: 1rem 2rem;
            display: flex;
            align-items: center;
            gap: 1rem;
			width: 100%;
			justify-content: space-between;
        }
        .logo-mark {
            font-family: var(--font-oxygen);
            font-size: 1.1rem;
            font-weight: 700;
            color: var(--accent);
            letter-spacing: 0.05em;
            text-decoration: none;
        }
        .logo-mark span { color: var(--text-muted); font-weight: 400; }
        .header-badge {
            margin-left: auto;
            background: var(--accent-glow);
            border: 1px solid rgba(74,144,226,0.3);
            color: var(--accent);
            font-size: 0.72rem;
            font-weight: 600;
            letter-spacing: 0.08em;
            padding: 4px 10px;
            border-radius: 99px;
            text-transform: uppercase;
        }

        /* ── LAYOUT ─────────────────────────────────────────────── */
        main {
            flex: 1;
            width: 100%;
            max-width: 1200px;
            margin: 0 auto;
            padding: 2.5rem 1.5rem 3rem;
        }

        .page-title {
            font-family: var(--font-oxygen);
            font-size: clamp(1.4rem, 3vw, 2rem);
            font-weight: 700;
            color: var(--text-main);
            margin-bottom: 0.4rem;
        }
        .page-title span { color: var(--accent); }
        .page-subtitle {
            color: var(--text-muted);
            font-size: 0.95rem;
            margin-bottom: 2.5rem;
        }

        .calc-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 1.5rem;
            align-items: start;
        }
        @media (max-width: 860px) {
            .calc-grid { grid-template-columns: 1fr; }
        }

        /* ── CARDS ──────────────────────────────────────────────── */
        .card {
            background: var(--bg-card);
            border: 1px solid var(--border);
            border-radius: var(--radius);
            padding: 1.75rem;
            transition: border-color var(--transition);
        }
        .card:hover { border-color: var(--border-hover); }
        .card-title {
            font-family: var(--font-oxygen);
            font-size: 0.78rem;
            font-weight: 700;
            letter-spacing: 0.12em;
            text-transform: uppercase;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            display: flex;
            align-items: center;
            gap: 0.5rem;
        }
        .card-title::before {
            content: '';
            display: inline-block;
            width: 3px;
            height: 14px;
            background: var(--accent);
            border-radius: 2px;
        }

        /* ── SLIDERS & INPUTS ───────────────────────────────────── */
        .field { margin-bottom: 1.5rem; }
        .field:last-child { margin-bottom: 0; }

        .field-header {
            display: flex;
            justify-content: space-between;
            align-items: baseline;
            margin-bottom: 0.6rem;
        }
        .field-label {
            font-size: 0.85rem;
            font-weight: 500;
            color: var(--text-muted);
        }
        .field-value {
            font-family: var(--font-oxygen);
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
            background: var(--bg-input);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 3px 10px;
            text-align: right;
            min-width: 110px;
            outline: none;
            transition: border-color var(--transition), box-shadow var(--transition);
        }
        .field-value:focus {
            border-color: var(--accent);
            box-shadow: 0 0 0 3px var(--accent-glow);
        }

        /* custom range */
        input[type="range"] {
            -webkit-appearance: none;
            appearance: none;
            width: 100%;
            height: 5px;
            border-radius: 99px;
            background: var(--border);
            outline: none;
            cursor: pointer;
        }
        input[type="range"]::-webkit-slider-thumb {
            -webkit-appearance: none;
            appearance: none;
            width: 18px;
            height: 18px;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 0 3px var(--accent-glow), 0 2px 6px rgba(0,0,0,0.4);
            transition: transform var(--transition), box-shadow var(--transition);
        }
        input[type="range"]::-webkit-slider-thumb:hover {
            transform: scale(1.2);
            box-shadow: 0 0 0 6px var(--accent-glow), 0 2px 8px rgba(0,0,0,0.5);
        }
        input[type="range"]::-moz-range-thumb {
            width: 18px; height: 18px;
            border: none;
            border-radius: 50%;
            background: var(--accent);
            box-shadow: 0 0 0 3px var(--accent-glow);
            cursor: pointer;
        }

        .range-limits {
            display: flex;
            justify-content: space-between;
            font-size: 0.72rem;
            color: var(--text-dim);
            margin-top: 4px;
            font-family: 'Space Mono', monospace;
        }

        /* segmented toggle */
        .toggle-group {
            display: flex;
            background: var(--bg-deep);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            overflow: hidden;
            margin-bottom: 1.5rem;
        }
        .toggle-btn {
            flex: 1;
            padding: 8px 0;
            font-size: 0.82rem;
            font-weight: 600;
            color: var(--text-muted);
            background: transparent;
            border: none;
            cursor: pointer;
            transition: all var(--transition);
            letter-spacing: 0.03em;
        }
        .toggle-btn.active {
            background: var(--accent);
            color: #fff;
        }
        .toggle-btn:hover:not(.active) { color: var(--text-main); background: var(--border); }

        /* ── RESULTADOS ─────────────────────────────────────────── */
        .result-hero {
            text-align: center;
            padding: 1.5rem 1rem 1rem;
            margin-bottom: 1.5rem;
            background: var(--bg-deep);
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            position: relative;
            overflow: hidden;
        }
        .result-hero::after {
            content: '';
            position: absolute;
            bottom: 0; left: 0; right: 0;
            height: 3px;
            background: linear-gradient(90deg, var(--accent), var(--accent-2));
        }
        .result-hero-label {
            font-size: 0.75rem;
            font-weight: 600;
            text-transform: uppercase;
            letter-spacing: 0.1em;
            color: var(--text-muted);
            margin-bottom: 0.4rem;
        }
        .result-hero-value {
            font-family: 'Space Mono', monospace;
            font-size: clamp(2rem, 5vw, 3rem);
            font-weight: 700;
            color: var(--accent);
            line-height: 1;
            transition: color 0.3s;
        }
        .result-hero-sub {
            font-size: 0.8rem;
            color: var(--text-dim);
            margin-top: 0.3rem;
        }

        .result-grid {
            display: grid;
            grid-template-columns: 1fr 1fr;
            gap: 0.85rem;
            margin-bottom: 1.5rem;
        }
        .result-item {
            background: var(--bg-deep);
            border: 1px solid var(--border);
            border-radius: var(--radius-sm);
            padding: 0.9rem 1rem;
            transition: border-color var(--transition);
        }
        .result-item:hover { border-color: var(--border-hover); }
        .result-item-label {
            font-size: 0.72rem;
            font-weight: 500;
            text-transform: uppercase;
            letter-spacing: 0.07em;
            color: var(--text-dim);
            margin-bottom: 0.3rem;
        }
        .result-item-val {
            font-family: 'Space Mono', monospace;
            font-size: 1rem;
            font-weight: 700;
            color: var(--text-main);
        }
        .result-item-val.green  { color: var(--accent-2); }
        .result-item-val.orange { color: var(--accent-warn); }
        .result-item-val.red    { color: var(--accent-red); }
        .result-item-val.blue   { color: var(--accent); }

        /* progress bar decomposition */
        .bar-wrap {
            margin-bottom: 1.5rem;
        }
        .bar-label {
            font-size: 0.78rem;
            color: var(--text-muted);
            margin-bottom: 0.5rem;
            font-weight: 500;
        }
        .bar-track {
            height: 10px;
            background: var(--bg-deep);
            border-radius: 99px;
            overflow: hidden;
            display: flex;
        }
        .bar-fill-principal { background: var(--accent); transition: width 0.5s ease; }
        .bar-fill-interest   { background: var(--accent-warn); transition: width 0.5s ease; }
        .bar-fill-costs      { background: var(--accent-red); transition: width 0.5s ease; }
        .bar-legend {
            display: flex;
            gap: 1rem;
            margin-top: 0.5rem;
            flex-wrap: wrap;
        }
        .legend-item {
            display: flex;
            align-items: center;
            gap: 5px;
            font-size: 0.75rem;
            color: var(--text-muted);
        }
        .legend-dot {
            width: 8px; height: 8px;
            border-radius: 50%;
            flex-shrink: 0;
        }

        /* amortization table */
        .table-wrap {
            overflow-x: auto;
            border-radius: var(--radius-sm);
            border: 1px solid var(--border);
            margin-top: 1.5rem;
        }
        table {
            width: 100%;
            border-collapse: collapse;
            font-size: 0.8rem;
        }
        thead th {
            background: var(--bg-deep);
            color: var(--text-muted);
            font-family: 'Space Mono', monospace;
            font-size: 0.7rem;
            letter-spacing: 0.06em;
            text-transform: uppercase;
            padding: 10px 14px;
            text-align: right;
            border-bottom: 1px solid var(--border);
            white-space: nowrap;
        }
        thead th:first-child { text-align: left; }
        tbody tr { transition: background var(--transition); }
        tbody tr:hover { background: var(--bg-input); }
        tbody td {
            padding: 8px 14px;
            text-align: right;
            border-bottom: 1px solid rgba(35,54,82,0.4);
            color: var(--text-muted);
            font-size: 0.79rem;
            white-space: nowrap;
        }
        tbody td:first-child { text-align: left; color: var(--text-dim); font-family: 'Space Mono', monospace; }
        tbody td.capital-col { color: var(--accent); }
        tbody td.interest-col { color: var(--accent-warn); }
        tbody td.balance-col { color: var(--text-main); }

        /* tabs */
        .tabs {
            display: flex;
            gap: 0.25rem;
            margin-bottom: 1.5rem;
            border-bottom: 1px solid var(--border);
            padding-bottom: 0;
        }
        .tab-btn {
            background: none;
            border: none;
            border-bottom: 2px solid transparent;
            padding: 8px 14px;
            font-size: 0.83rem;
            font-weight: 600;
            color: var(--text-muted);
            cursor: pointer;
            transition: all var(--transition);
            margin-bottom: -1px;
        }
        .tab-btn.active { color: var(--accent); border-bottom-color: var(--accent); }
        .tab-btn:hover:not(.active) { color: var(--text-main); }
        .tab-panel { display: none; }
        .tab-panel.active { display: block; }

        /* info box */
        .info-box {
            background: rgba(74,144,226,0.07);
            border: 1px solid rgba(74,144,226,0.2);
            border-radius: var(--radius-sm);
            padding: 1rem 1.2rem;
            font-size: 0.82rem;
            color: var(--text-muted);
            line-height: 1.6;
            margin-bottom: 1.2rem;
        }
        .info-box strong { color: var(--accent); }
        .info-box.warn {
            background: rgba(226,149,74,0.07);
            border-color: rgba(226,149,74,0.25);
        }
        .info-box.warn strong { color: var(--accent-warn); }

        /* affordability meter */
        .afford-wrap { margin-bottom: 1.2rem; }
        .afford-label {
            display: flex;
            justify-content: space-between;
            font-size: 0.8rem;
            color: var(--text-muted);
            margin-bottom: 0.4rem;
        }
        .afford-bar {
            height: 8px;
            background: var(--bg-deep);
            border-radius: 99px;
            overflow: visible;
            position: relative;
        }
        .afford-fill {
            height: 100%;
            border-radius: 99px;
            transition: width 0.5s ease, background 0.5s ease;
        }
        .afford-limit {
            position: absolute;
            top: -4px;
            width: 2px;
            height: 16px;
            background: rgba(255,255,255,0.15);
        }
        .afford-limit::after {
            content: '35%';
            position: absolute;
            top: -16px;
            left: 50%;
            transform: translateX(-50%);
            font-size: 0.65rem;
            color: var(--text-dim);
            white-space: nowrap;
            font-family: 'Space Mono', monospace;
        }
.table-wrap{
    width:100%;
    max-width:100%;
    overflow-x:auto;
}
.calc-grid{
    display:grid;
    grid-template-columns:repeat(auto-fit,minmax(320px,1fr));
    gap:1.5rem;
}

        /* footer */
        footer {
            background: var(--bg-deep);
            border-top: 1px solid var(--border);
            padding: 1rem 2rem;
            font-size: 0.82rem;
            color: var(--text-dim);
            display: flex;
            justify-content: space-between;
            align-items: center;
            flex-wrap: wrap;
            gap: 0.5rem;
        }
        footer a { color: var(--accent); text-decoration: none; }
        footer a:hover { text-decoration: underline; }

        /* animations */
        @keyframes fadeUp {
            from { opacity: 0; transform: translateY(16px); }
            to   { opacity: 1; transform: translateY(0); }
        }
        .card { animation: fadeUp 0.4s ease-out both; }
        .card:nth-child(2) { animation-delay: 0.1s; }

        /* responsive tweaks */
        @media (max-width: 500px) {
            .result-grid { grid-template-columns: 1fr; }
            header { padding: 0.75rem 1rem; }
            main { padding: 1.5rem 1rem 2rem; }
        }
@media (max-width:500px){

    header{
        flex-wrap:wrap;
        justify-content:center;
        text-align:center;
        gap:0.5rem;
    }

    .logo-img{
        max-width:180px;
    }

}
/* ── EURIBOR BADGE ────────────────────────────────────────────── */
.euribor-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.75rem;
    font-family: 'Space Mono', monospace;
    font-weight: 700;
    padding: 5px 12px;
    border-radius: 99px;
    border: 1px solid var(--border);
    color: var(--text-muted);
    background: var(--bg-deep);
    transition: all 0.4s ease;
    margin-bottom: 1rem;
}
.euribor-badge::before {
    content: '●';
    font-size: 0.6rem;
    color: var(--text-dim);
}
.euribor-badge.live {
    color: var(--accent-2);
    border-color: rgba(61,214,140,0.3);
    background: rgba(61,214,140,0.06);
}
.euribor-badge.live::before  { color: var(--accent-2); }
.euribor-badge.fallback {
    color: var(--accent-warn);
    border-color: rgba(226,149,74,0.3);
    background: rgba(226,149,74,0.06);
}
.euribor-badge.fallback::before { color: var(--accent-warn); }

/* ── INTEREST MODE PANEL ────────────────────────────────────── */
#interestModePanel {
    background: var(--bg-deep);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    padding: 0.85rem 1rem;
    margin-bottom: 1.5rem;
    font-size: 0.82rem;
    color: var(--text-muted);
    line-height: 1.5;
    min-height: 48px;
    transition: all 0.2s;
}
#interestModePanel strong { color: var(--accent); }

/* Rows que se muestran/ocultan según modo */
.mode-row { transition: opacity 0.2s, max-height 0.3s; }

/* Toggle con más botones (5 opciones) */
#interestModeToggle .toggle-btn {
    font-size: 0.75rem;
    padding: 7px 4px;
    letter-spacing: 0;
}
@media (max-width: 600px) {
    #interestModeToggle { flex-wrap: wrap; }
    #interestModeToggle .toggle-btn { flex: 1 1 40%; min-width: 80px; }
}

/* Disabled slider */
input[type="range"]:disabled {
    opacity: 0.45;
    cursor: not-allowed;
}
input[type="range"]:disabled::-webkit-slider-thumb { cursor: not-allowed; }
/* ── EURIBOR CHART SECTION ──────────────────────────────────────────────── */
.chart-section {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto 2.5rem;
    padding: 0 1.5rem;
}
.chart-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 2rem 2rem 1.5rem;
    animation: fadeUp 0.4s ease-out 0.2s both;
    transition: border-color var(--transition);
}
.chart-card:hover { border-color: var(--border-hover); }
.chart-header {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 1rem;
    margin-bottom: 1.5rem;
}
.chart-title {
    font-family: var(--font-oxygen);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--text-muted);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.4rem;
}
.chart-title::before {
    content: '';
    display: inline-block;
    width: 3px;
    height: 14px;
    background: var(--accent);
    border-radius: 2px;
}
.chart-subtitle { font-size: 0.82rem; color: var(--text-dim); }
.chart-controls { display: flex; gap: 0.4rem; flex-wrap: wrap; }
.chart-range-btn {
    background: var(--bg-deep);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    font-size: 0.75rem;
    font-weight: 600;
    font-family: 'Space Mono', monospace;
    padding: 5px 12px;
    cursor: pointer;
    transition: all var(--transition);
    letter-spacing: 0.04em;
}
.chart-range-btn:hover { color: var(--text-main); border-color: var(--border-hover); }
.chart-range-btn.active {
    background: var(--accent-glow);
    border-color: rgba(74,144,226,0.4);
    color: var(--accent);
}
.chart-canvas-wrap { position: relative; width: 100%; height: 300px; }
#euriborChart { width: 100% !important; height: 100% !important; }
.chart-loading {
    position: absolute; inset: 0;
    display: flex; align-items: center; justify-content: center;
    color: var(--text-dim); font-size: 0.82rem; gap: 0.6rem;
}
.chart-loading::before {
    content: '';
    width: 14px; height: 14px;
    border: 2px solid var(--border);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    flex-shrink: 0;
}
@keyframes spin { to { transform: rotate(360deg); } }
.chart-stats {
    display: flex; gap: 2rem;
    margin-top: 1.25rem; padding-top: 1.25rem;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
}
.chart-stat { display: flex; flex-direction: column; gap: 2px; }
.chart-stat-label {
    font-size: 0.7rem; color: var(--text-dim);
    font-family: 'Space Mono', monospace;
    text-transform: uppercase; letter-spacing: 0.06em;
}
.chart-stat-val { font-family: var(--font-oxygen); font-size: 0.95rem; font-weight: 700; }
.chart-source {
    margin-top: 0.75rem; font-size: 0.7rem;
    color: var(--text-dim); text-align: right;
}
.chart-source a { color: var(--text-dim); text-decoration: none; }
.chart-source a:hover { color: var(--accent); }
@media (max-width: 600px) {
    .chart-canvas-wrap { height: 220px; }
    .chart-stats { gap: 1rem; }
    .chart-card { padding: 1.25rem 1rem 1rem; }
}