:root {
    --bg-start: #12309e;
    --panel: #ffffff;
    --field: #fbfcff;
    --row: #f5f8ff;
    --ink: #0b1330;
    --muted: #4d5a86;
    --line: #c6d6fb;
    --primary: #0047bb;
    --primary-strong: #12309e;
    --heading: #12309e;
    --accent: #00c2ff;
    --orange: #ff8200;
    --orange-strong: #e67500;
    --good: #0a8f5a;
    --shadow: 0 18px 44px rgba(11, 19, 48, 0.16);
    --radius: 16px;
}

:root[data-theme="dark"] {
    --bg-start: #0b1330;
    --panel: #141a33;
    --field: #0f1530;
    --row: #1a2142;
    --ink: #eef2ff;
    --muted: #a3add1;
    --line: #2b3566;
    --heading: #9db8ff;
    --good: #4ade80;
    --shadow: 0 18px 44px rgba(0, 0, 0, 0.45);
}

* {
    box-sizing: border-box;
}

[hidden] {
    display: none !important;
}

body {
    margin: 0;
    min-height: 100vh;
    font-family: 'DM Sans', Arial, sans-serif;
    color: var(--ink);
    background: var(--bg-start);
    position: relative;
    overflow-x: hidden;
}

#gradient-canvas {
    position: fixed;
    inset: 0;
    z-index: -1;
    width: 100%;
    height: 100%;
    pointer-events: none;
    --gradient-color-1: #0047bb;
    --gradient-color-2: #ff8200;
    --gradient-color-3: #0047bb;
    --gradient-color-4: #242424;
}

h1, h2, h3 {
    margin: 0;
    letter-spacing: -0.01em;
}

p {
    margin: 0;
    color: var(--muted);
}

a {
    color: var(--primary);
}

.app-shell {
    max-width: 900px;
    margin: 0 auto;
    padding: 28px 24px 64px;
}

.topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 24px;
    flex-wrap: wrap;
    gap: 12px;
}

.brand {
    display: flex;
    align-items: center;
    gap: 14px;
}

.brand-mark {
    display: block;
    width: 44px;
    height: 44px;
    flex-shrink: 0;
    /* Le logo source est une forme sombre : on le passe en blanc pour le contraste sur le fond animé. */
    filter: brightness(0) invert(1);
}

.eyebrow {
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--accent);
}

.topbar h1 {
    font-size: 24px;
    background: linear-gradient(120deg, #fff, var(--accent) 80%);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
}

.icon-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border: 1px solid var(--line);
    border-radius: 10px;
    background: var(--panel);
    color: var(--muted);
    cursor: pointer;
    transition: color 0.15s ease, transform 0.15s ease;
}

.icon-btn:hover {
    color: var(--primary);
    transform: translateY(-1px);
}

.icon-sun,
:root[data-theme="dark"] .icon-moon {
    display: none;
}

:root[data-theme="dark"] .icon-sun {
    display: block;
}

.panel {
    background: var(--panel);
    border: 1px solid var(--line);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    padding: 24px;
    margin-bottom: 24px;
}

.panel h2 {
    font-size: 19px;
    margin-bottom: 6px;
}

.panel h3 {
    font-size: 14px;
    margin: 22px 0 10px;
    color: var(--heading);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.panel > p {
    margin-bottom: 16px;
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 14px 18px;
}

label {
    display: block;
    font-size: 13px;
    font-weight: 600;
    color: var(--ink);
}

.optional {
    font-weight: 400;
    color: var(--muted);
}

input[type="number"], select {
    display: block;
    width: 100%;
    margin-top: 6px;
    padding: 11px 13px;
    border-radius: 10px;
    border: 1px solid var(--line);
    font-size: 14px;
    font-family: inherit;
    min-height: 46px;
    color: var(--ink);
    background: var(--field);
}

input[type="number"]:focus, select:focus {
    outline: 2px solid var(--primary);
    outline-offset: 1px;
}

:root[data-theme="dark"] input[type="number"]:focus,
:root[data-theme="dark"] select:focus {
    outline-color: var(--orange);
}

.switch {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    margin-top: 22px;
    cursor: pointer;
}

.switch input {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.switch-track {
    position: relative;
    flex-shrink: 0;
    width: 52px;
    height: 30px;
    border-radius: 999px;
    background: var(--line);
    transition: background 0.2s ease;
}

.switch-track::after {
    content: "";
    position: absolute;
    top: 3px;
    left: 3px;
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: #fff;
    box-shadow: 0 2px 6px rgba(11, 19, 48, 0.25);
    transition: transform 0.2s ease;
}

.switch input:checked + .switch-track {
    background: var(--primary);
}

:root[data-theme="dark"] .switch input:checked + .switch-track {
    background: var(--orange);
}

.switch input:checked + .switch-track::after {
    transform: translateX(22px);
}

.switch input:focus-visible + .switch-track {
    outline: 2px solid var(--accent);
    outline-offset: 2px;
}

.actions {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 12px;
    margin-top: 22px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    border: none;
    background: linear-gradient(120deg, var(--primary), var(--primary-strong));
    color: #fff;
    font-family: inherit;
    font-weight: 700;
    font-size: 14px;
    padding: 12px 28px;
    border-radius: 10px;
    cursor: pointer;
    min-height: 46px;
    text-decoration: none;
    box-shadow: 0 10px 22px rgba(29, 78, 216, 0.32);
    transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 12px 26px rgba(29, 78, 216, 0.4);
}

.btn-secondary {
    background: var(--panel);
    color: var(--primary);
    border: 1px solid var(--line);
    box-shadow: none;
}

:root[data-theme="dark"] .btn-secondary {
    color: var(--heading);
}

.btn-secondary:hover {
    background: var(--row);
    box-shadow: none;
}

.btn-orange {
    background: linear-gradient(120deg, var(--orange), var(--orange-strong));
    box-shadow: 0 10px 22px rgba(255, 130, 0, 0.32);
}

.btn-orange:hover {
    box-shadow: 0 12px 26px rgba(255, 130, 0, 0.42);
}

.btn.pulse {
    animation: pulse 1.5s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); box-shadow: 0 0 0 0 rgba(255, 130, 0, 0.7); }
    50% { transform: scale(1.05); box-shadow: 0 0 15px 5px rgba(255, 130, 0, 0); }
}

.package-card,
.kpi {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    color: #fff;
    border-radius: 12px;
    padding: 18px;
    box-shadow: 0 10px 22px rgba(11, 19, 48, 0.18);
}

.package-card {
    margin: 18px 0;
    background: linear-gradient(120deg, var(--primary), var(--primary-strong));
}

.kpi-blue {
    background: linear-gradient(120deg, #1a5fd6, var(--primary));
}

.kpi-orange {
    background: linear-gradient(120deg, var(--orange), var(--orange-strong));
}

.kpi-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 14px;
}

.kpi-title {
    font-size: 14px;
    font-weight: 500;
    opacity: 0.92;
}

.kpi-value {
    margin-top: 4px;
    font-size: 30px;
    font-weight: 800;
}

.kpi-value-xl {
    font-size: 42px;
}

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

.row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 11px 14px;
    background: var(--row);
    border: 1px solid var(--line);
    border-radius: 10px;
    font-size: 14px;
}

.row span {
    color: var(--muted);
}

.row strong {
    flex-shrink: 0;
    text-align: right;
}

.plus {
    color: var(--good);
}

.rate-blue {
    color: var(--primary);
}

.rate-orange {
    color: var(--orange);
}

:root[data-theme="dark"] .rate-blue {
    color: var(--heading);
}

.benefit-total {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px 16px;
    margin-bottom: 12px;
    padding: 14px 18px;
    border-radius: 12px;
    color: #fff;
    background: linear-gradient(120deg, var(--orange), var(--orange-strong));
    box-shadow: 0 10px 22px rgba(255, 130, 0, 0.28);
}

.benefit-total span {
    font-size: 14px;
    font-weight: 500;
}

.benefit-total strong {
    font-size: 26px;
    font-weight: 800;
}

.benefit-total small {
    display: block;
    margin-top: 2px;
    font-size: 12px;
    opacity: 0.9;
}

.kpi-note {
    margin-top: 8px;
    font-size: 12px;
    opacity: 0.9;
}

.benefit-variable {
    border-left-style: dashed;
}

.benefit-variable .benefit-amount {
    color: var(--orange);
}

.badge {
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 11px;
    font-weight: 700;
    color: var(--orange-strong);
    background: rgba(255, 130, 0, 0.14);
}

.benefit-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
    gap: 12px;
}

.benefit {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    padding: 16px;
    background: var(--row);
    border: 1px solid var(--line);
    border-left: 4px solid var(--orange);
    border-radius: 12px;
}

.benefit svg {
    color: var(--orange);
    margin-bottom: 4px;
}

.benefit h4 {
    margin: 0;
    font-size: 14px;
}

.benefit-amount {
    font-size: 22px;
    font-weight: 800;
    color: var(--good);
}

.benefit small {
    font-size: 12px;
    line-height: 1.4;
    color: var(--muted);
}

.qvt-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
    gap: 12px;
}

.qvt-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 4px;
    padding: 16px;
    background: var(--row);
    border: 1px solid var(--line);
    border-radius: 12px;
    text-align: center;
    color: var(--primary);
}

:root[data-theme="dark"] .qvt-item {
    color: var(--heading);
}

.qvt-item strong {
    margin-top: 6px;
    font-size: 14px;
    color: var(--ink);
}

.qvt-item small {
    font-size: 12px;
    color: var(--muted);
}

.rules {
    margin-top: 24px;
    border: 1px solid var(--line);
    border-radius: 12px;
    background: var(--row);
}

.rules summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 14px 16px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 700;
    list-style: none;
}

.rules summary::-webkit-details-marker {
    display: none;
}

.rules summary::after {
    content: "›";
    font-size: 22px;
    line-height: 1;
    color: var(--muted);
    transition: transform 0.25s ease;
}

.rules[open] summary::after {
    transform: rotate(90deg);
}

.rules table {
    width: calc(100% - 32px);
    margin: 0 16px 16px;
    border-collapse: collapse;
    font-size: 13px;
}

.rules th {
    padding: 8px 12px;
    text-align: left;
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    color: var(--heading);
    border-bottom: 1px solid var(--line);
}

.rules td {
    padding: 8px 12px;
    color: var(--muted);
}

.rules .group td {
    font-weight: 700;
    color: var(--ink);
    background: var(--panel);
}

.rules .sub td:first-child {
    padding-left: 28px;
    font-style: italic;
    font-weight: 400;
}

.legal-note {
    margin-top: 22px;
    text-align: center;
}

.legal-note p {
    font-size: 12px;
    margin-top: 4px;
}

.site-footer {
    text-align: center;
    font-size: 12px;
    margin-top: 32px;
}

.site-footer p {
    margin-top: 4px;
    font-size: 12px;
    color: #fff;
    text-shadow: 0 1px 6px rgba(11, 19, 48, 0.55);
}

.footer-logo {
    display: block;
    height: 20px;
    width: auto;
    margin: 0 auto 8px;
    /* Logotype sombre recoloré en blanc pour le fond animé. */
    filter: brightness(0) invert(1);
    opacity: 0.85;
}

.visitor-counter {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

@media (max-width: 640px) {
    .topbar h1 {
        font-size: 20px;
    }
    .kpi-value-xl {
        font-size: 34px;
    }
    .row {
        flex-direction: column;
        align-items: flex-start;
        gap: 4px;
    }
    .row strong {
        text-align: left;
    }
}

.print-summary {
    display: none;
}

@page {
    size: A4;
    margin: 14mm;
}

@media print {
    :root,
    :root[data-theme="dark"] {
        --bg-start: #fff;
        --panel: #fff;
        --row: #f5f8ff;
        --ink: #0b1330;
        --muted: #4d5a86;
        --line: #c6d6fb;
        --heading: #12309e;
        --good: #0a8f5a;
        --shadow: none;
    }

    * {
        -webkit-print-color-adjust: exact;
        print-color-adjust: exact;
        animation: none !important;
        text-shadow: none !important;
    }

    .no-print,
    #gradient-canvas,
    .visitor-counter {
        display: none !important;
    }

    body {
        background: #fff;
    }

    .app-shell {
        max-width: none;
        padding: 0;
    }

    .brand-mark,
    .footer-logo {
        filter: none;
    }

    .topbar {
        margin-bottom: 12px;
        padding-bottom: 10px;
        border-bottom: 2px solid var(--orange);
    }

    .topbar h1 {
        background: none;
        color: var(--primary);
    }

    .eyebrow {
        color: var(--orange);
    }

    .panel {
        padding: 0;
        margin: 0;
        border: none;
        border-radius: 0;
        box-shadow: none;
    }

    .print-summary {
        display: grid;
        grid-template-columns: max-content 1fr;
        gap: 4px 16px;
        margin: 10px 0 0;
        padding: 12px 14px;
        font-size: 12px;
        background: var(--row);
        border: 1px solid var(--line);
        border-radius: 10px;
    }

    .print-summary dt {
        font-weight: 700;
    }

    .print-summary dd {
        margin: 0;
        color: var(--muted);
    }

    .package-card,
    .kpi,
    .benefit-total,
    .row,
    .benefit,
    .qvt-item {
        break-inside: avoid;
        box-shadow: none;
    }

    .panel h3 {
        break-after: avoid;
    }

    #avantages-container,
    #qvt-container {
        break-inside: avoid;
    }

    .site-footer p {
        color: var(--muted);
    }
}