/* ===========================================
   ECOS - CSS commun pour tous les simulateurs
   =========================================== */

:root {
    --bleu-france: #000091;
    --bleu-france-light: #e3e3fd;
    --bleu-france-hover: #1212ff;
    --rouge-marianne: #e1000f;
    --gris-fond: #f6f6f6;
    --gris-texte: #3a3a3a;
    --gris-clair: #e5e5e5;
    --blanc: #ffffff;
    --vert-validation: #18753c;
    --vert-light: #b8fec9;
    --orange-alerte: #b34000;
    --orange-light: #fff3cd;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.12);
    --radius: 4px;
    --radius-lg: 8px;
    --primary: #1a56db;
    --gray-300: #cbd5e1;
    --gray-500: #64748b;
    --gray-600: #475569;
    --gray-900: #0f172a;
    --white: #ffffff;
}

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

body {
    font-family: 'Source Sans 3', -apple-system, sans-serif;
    background: var(--gris-fond);
    color: var(--gris-texte);
    line-height: 1.6;
    min-height: 100vh;
}

/* ===========================================
   Navigation
   =========================================== */
nav {
    background: var(--blanc);
    border-bottom: 1px solid var(--gris-clair);
    padding: 1rem 2rem;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.logo-text {
    font-size: 1.75rem;
    font-weight: 800;
    color: #1a56db;
    letter-spacing: -0.02em;
}

.logo-tagline {
    font-size: 0.7rem;
    color: #64748b;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-left: 0.75rem;
    padding-left: 0.75rem;
    border-left: 1px solid var(--gris-clair);
}

.nav-links {
    display: flex;
    gap: 2rem;
    list-style: none;
}

.nav-links a {
    color: #475569;
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: #1a56db;
}

/* ===========================================
   Page Header
   =========================================== */
.page-header {
    background: var(--blanc);
    border-bottom: 3px solid var(--bleu-france);
    padding: 1rem 2rem;
}

.page-header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.page-header-title {
    flex: 1;
}

.page-header-title h1 {
    font-family: 'Crimson Pro', Georgia, serif;
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--bleu-france);
    letter-spacing: -0.02em;
}

.page-header-title .subtitle {
    font-size: 0.85rem;
    color: #666;
    margin-top: 0.15rem;
}

.version-badge {
    background: var(--bleu-france-light);
    color: var(--bleu-france);
    padding: 0.35rem 0.75rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.save-indicator {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.35rem 0.75rem;
    border-radius: 2rem;
    font-size: 0.75rem;
    font-weight: 500;
    background: var(--vert-light);
    color: var(--vert-validation);
    opacity: 0;
    transition: opacity 0.3s;
}

.save-indicator.visible {
    opacity: 1;
}

/* ===========================================
   Disclaimer
   =========================================== */
.disclaimer {
    background: linear-gradient(135deg, var(--orange-light) 0%, #ffeeba 100%);
    border-left: 4px solid var(--orange-alerte);
    padding: 1rem 1.5rem;
    margin: 1rem auto;
    max-width: 1200px;
    border-radius: 0 var(--radius) var(--radius) 0;
    font-size: 0.9rem;
}

.disclaimer strong {
    color: var(--orange-alerte);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.35rem;
}

/* ===========================================
   Layout Principal
   =========================================== */
main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1.5rem 2rem 3rem;
    display: grid;
    grid-template-columns: 1fr 420px;
    gap: 2rem;
}

.input-column {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* ===========================================
   Sections de Saisie
   =========================================== */
.input-section {
    background: var(--blanc);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.section-header {
    background: var(--bleu-france);
    color: var(--blanc);
    padding: 1rem 1.5rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.section-header h2 {
    font-family: 'Crimson Pro', Georgia, serif;
    font-size: 1.15rem;
    font-weight: 500;
}

.section-icon {
    width: 28px;
    height: 28px;
    background: rgba(255,255,255,0.15);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.9rem;
}

.section-content {
    padding: 1.5rem;
}

/* ===========================================
   Champs de formulaire
   =========================================== */
.field-group {
    margin-bottom: 1.25rem;
}

.field-group:last-child {
    margin-bottom: 0;
}

.field-group label {
    display: block;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--gris-texte);
    font-size: 0.95rem;
}

.field-group .hint {
    font-size: 0.8rem;
    color: #666;
    margin-top: 0.25rem;
    font-style: italic;
}

.field-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

/* ===========================================
   Inputs
   =========================================== */
input[type="number"],
input[type="text"],
input[type="date"],
select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--gris-clair);
    border-radius: var(--radius);
    font-size: 1rem;
    font-family: inherit;
    transition: all 0.2s ease;
    background: var(--blanc);
}

input[type="number"]:focus,
input[type="text"]:focus,
input[type="date"]:focus,
select:focus {
    outline: none;
    border-color: var(--bleu-france);
    box-shadow: 0 0 0 3px var(--bleu-france-light);
}

input[type="number"]::placeholder {
    color: #aaa;
}

input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: var(--bleu-france);
    cursor: pointer;
    margin-right: 0.5rem;
    vertical-align: middle;
}

/* Input avec suffixe EUR */
.input-euro {
    position: relative;
}

.input-euro input {
    padding-right: 3rem;
}

.input-euro::after {
    content: "EUR";
    position: absolute;
    right: 1rem;
    top: 50%;
    transform: translateY(-50%);
    color: #666;
    font-weight: 500;
    font-size: 0.85rem;
    pointer-events: none;
}

/* ===========================================
   Panel de Resultats
   =========================================== */
.results-panel {
    position: sticky;
    top: 100px;
    height: fit-content;
}

.results-card {
    background: var(--blanc);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
}

.results-header {
    background: linear-gradient(135deg, var(--bleu-france) 0%, #1a1a8e 100%);
    color: var(--blanc);
    padding: 1.5rem;
    text-align: center;
}

.results-header h3 {
    font-family: 'Crimson Pro', Georgia, serif;
    font-size: 1.1rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

.total-amount {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.01em;
}

.total-amount.zero {
    color: #90ee90;
}

.results-body {
    padding: 1.5rem;
}

/* ===========================================
   Lignes de Resume
   =========================================== */
.summary-line {
    display: flex;
    justify-content: space-between;
    padding: 0.6rem 0;
    border-bottom: 1px solid var(--gris-clair);
    font-size: 0.9rem;
}

.summary-line:last-child {
    border-bottom: none;
}

.summary-line.highlight {
    font-weight: 600;
    color: var(--bleu-france);
    background: var(--bleu-france-light);
    margin: 0.5rem -1.5rem;
    padding: 0.75rem 1.5rem;
}

.summary-line .label {
    color: #666;
}

.summary-line .value {
    font-weight: 500;
    font-variant-numeric: tabular-nums;
}

/* ===========================================
   Detail du Bareme
   =========================================== */
.bareme-detail {
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 2px solid var(--gris-clair);
}

.bareme-title {
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--bleu-france);
    margin-bottom: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.tranche {
    display: grid;
    grid-template-columns: 1fr auto auto;
    gap: 0.5rem;
    font-size: 0.8rem;
    padding: 0.4rem 0;
    align-items: center;
}

.tranche:nth-child(odd) {
    background: var(--gris-fond);
    margin: 0 -0.5rem;
    padding: 0.4rem 0.5rem;
    border-radius: var(--radius);
}

.tranche .range {
    color: #666;
}

.tranche .rate {
    color: var(--bleu-france);
    font-weight: 600;
    text-align: right;
}

.tranche .amount {
    font-weight: 500;
    text-align: right;
    min-width: 80px;
}

/* ===========================================
   Comparaison
   =========================================== */
.comparison-section {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 2px dashed var(--gris-clair);
}

.comparison-title {
    font-weight: 600;
    color: var(--gris-texte);
    margin-bottom: 0.75rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.comparison-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    margin-bottom: 0.75rem;
}

.comparison-card {
    padding: 0.75rem;
    border-radius: var(--radius);
    text-align: center;
}

.comparison-card.ifi {
    background: #f0f0f0;
}

.comparison-card.chp {
    background: var(--bleu-france-light);
}

.comparison-card .tax-name {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 0.25rem;
    color: #666;
}

.comparison-card.chp .tax-name {
    color: var(--bleu-france);
}

.comparison-card .tax-amount {
    font-size: 1.25rem;
    font-weight: 700;
}

.comparison-card .tax-seuil {
    font-size: 0.7rem;
    color: #888;
    margin-top: 0.25rem;
}

/* ===========================================
   Boutons
   =========================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.85rem 1.5rem;
    border: none;
    border-radius: var(--radius);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
}

.btn-primary {
    background: var(--bleu-france);
    color: var(--blanc);
}

.btn-primary:hover {
    background: #000070;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--blanc);
    color: var(--bleu-france);
    border: 2px solid var(--bleu-france);
}

.btn-secondary:hover {
    background: var(--bleu-france-light);
}

.btn-success {
    background: var(--vert-validation);
    color: var(--blanc);
}

.btn-success:hover {
    background: #125c2e;
}

.actions-row {
    display: flex;
    gap: 1rem;
}

/* ===========================================
   Info Box
   =========================================== */
.info-box {
    background: var(--bleu-france-light);
    border-left: 3px solid var(--bleu-france);
    padding: 0.75rem 1rem;
    margin: 1rem 0;
    font-size: 0.85rem;
    border-radius: 0 var(--radius) var(--radius) 0;
}

.info-box strong {
    color: var(--bleu-france);
}

.info-box.warning {
    background: var(--orange-light);
    border-color: var(--orange-alerte);
}

.info-box.warning strong {
    color: var(--orange-alerte);
}

.info-box.success {
    background: var(--vert-light);
    border-color: var(--vert-validation);
}

.info-box.success strong {
    color: var(--vert-validation);
}

/* ===========================================
   Footer
   =========================================== */
footer {
    background: #0f172a;
    color: #94a3b8;
    padding: 4rem 2rem 2rem;
    margin-top: 3rem;
}

.footer-grid {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 3rem;
}

.footer-brand .logo-text {
    color: var(--blanc);
    margin-bottom: 1rem;
}

.footer-brand p {
    font-size: 0.9rem;
    line-height: 1.7;
}

.footer-col h5 {
    color: var(--blanc);
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-col ul {
    list-style: none;
}

.footer-col li {
    margin-bottom: 0.5rem;
}

.footer-col a {
    color: #94a3b8;
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

.footer-col a:hover {
    color: var(--blanc);
}

.footer-bottom {
    max-width: 1200px;
    margin: 3rem auto 0;
    padding-top: 2rem;
    border-top: 1px solid #1e293b;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    font-size: 0.85rem;
}

/* ===========================================
   Toast Notifications
   =========================================== */
.toast {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    padding: 1rem 1.5rem;
    border-radius: var(--radius);
    color: var(--blanc);
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    transform: translateY(100px);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1000;
}

.toast.visible {
    transform: translateY(0);
    opacity: 1;
}

.toast.success {
    background: var(--vert-validation);
}

.toast.info {
    background: var(--bleu-france);
}

.toast.warning {
    background: var(--orange-alerte);
}

/* ===========================================
   Responsive
   =========================================== */
@media (max-width: 1024px) {
    main {
        grid-template-columns: 1fr;
        padding: 1rem;
    }
    .results-panel {
        position: static;
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
        gap: 2rem;
    }
}

@media (max-width: 768px) {
    .nav-links {
        display: none;
    }
    .footer-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    .page-header-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }
}

@media (max-width: 600px) {
    .field-row {
        grid-template-columns: 1fr;
    }
    .actions-row {
        flex-direction: column;
    }
    .comparison-grid {
        grid-template-columns: 1fr;
    }
}

/* ===========================================
   Print
   =========================================== */
@media print {
    nav, .page-header, .disclaimer, .actions-row, footer {
        display: none;
    }
    main {
        display: block;
    }
    .results-panel {
        position: static;
        margin-top: 2rem;
    }
}