@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:wght@400;600;700&display=swap');

:root {
  /* Palette MESH Solutions */
  --color-background: #ffffff;
  --color-surface: #f5f7f5;
  --color-text: #00221c;
  --color-text-secondary: #749670;
  --color-text-light: rgba(0, 34, 28, 0.65);
  --color-primary: #018476;
  --color-primary-dark: #00221c;
  --color-primary-hover: #4e7a51;
  --color-primary-active: #749670;
  --color-secondary: #dce8dc;
  --color-secondary-hover: #c8d8c8;
  --color-secondary-active: #4e7a51;
  --color-accent: #018476;
  --color-border: #c8d8c8;
  --color-btn-primary-text: #ffffff;
  --color-card-border: #c8d8c8;
  --color-error: #c0152f;
  --color-success: #018476;
  --color-warning: #b45309;
  --color-info: #4e7a51;
  --color-focus-ring: rgba(1, 132, 118, 0.25);

  /* Dérivées */
  --color-primary-light: rgba(1, 132, 118, 0.10);
  --color-secondary-light: rgba(220, 232, 220, 0.35);
  --color-accent-light: rgba(1, 132, 118, 0.10);
  --color-text-on-primary: #ffffff;
  --color-text-on-light: #00221c;

  /* RGB statut */
  --color-success-rgb: 1, 132, 118;
  --color-error-rgb: 192, 21, 47;
  --color-warning-rgb: 180, 83, 9;
  --color-info-rgb: 78, 122, 81;

  /* Typographie */
  --font-family-base: "FKGroteskNeue", "Geist", "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-display: 'Playfair Display', Georgia, serif;
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 14px;
  --font-size-md: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 18px;
  --font-size-2xl: 20px;
  --font-size-3xl: 24px;
  --font-size-4xl: 30px;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 550;
  --font-weight-bold: 600;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;
  --letter-spacing-tight: -0.01em;

  /* Espacement */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --space-4: 4px;
  --space-6: 6px;
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;
  --space-48: 48px;
  --space-64: 64px;

  /* Border Radius */
  --border-radius: 10px;
  --border-radius-lg: 12px;
  --radius-sm: 6px;
  --radius-base: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Ombres */
  --shadow: 0 2px 8px rgba(0, 34, 28, 0.07);
  --shadow-sm: 0 1px 3px rgba(0, 34, 28, 0.04), 0 1px 2px rgba(0, 34, 28, 0.02);
  --shadow-lg: 0 8px 24px rgba(0, 34, 28, 0.10);
  --shadow-md: 0 4px 12px rgba(0, 34, 28, 0.06);

  /* Focus */
  --focus-ring: 0 0 0 3px var(--color-focus-ring);
  --focus-outline: 2px solid var(--color-primary);

  /* Animation */
  --transition: all 0.2s ease;
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --ease-standard: cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --container-xl: 1200px;

  /* Caret select */
  --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23749670' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
}

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

html {
  font-size: var(--font-size-base);
  font-family: var(--font-family-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
}

body {
  background-color: var(--color-background);
  color: var(--color-text);
  line-height: 1.6;
  min-height: 100vh;
}

.container {
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* ── HERO / HEADER ─────────────────────────── */
.header {
  width: 100%;
  background: linear-gradient(135deg, #00221c 0%, #018476 100%);
  padding: var(--space-48) var(--space-64);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
}

.header .container {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.header h1 {
  font-family: var(--font-family-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: #ffffff;
  line-height: 1.2;
  margin: 0;
  text-align: center;
}

.subtitle {
  font-size: 0.92rem;
  color: #A5cfe3;
  margin-top: 10px;
  max-width: 520px;
  line-height: 1.65;
  text-align: center;
}

@media (max-width: 600px) {
  .header { padding: var(--spacing-xl) var(--spacing-md); }
}

/* ── LAYOUT ────────────────────────────────── */
.main { padding: var(--spacing-2xl) 0; }

.app-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-2xl);
}

/* ── CARDS ─────────────────────────────────── */
.card {
  background: var(--color-surface);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-xl);
  box-shadow: var(--shadow);
  border: 1px solid var(--color-card-border);
  transition: box-shadow var(--duration-normal) var(--ease-standard);
}

.card:hover { box-shadow: var(--shadow-lg); }

.card h2 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-lg);
  font-size: 1.5rem;
  font-weight: 600;
}

.card h3 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
  font-size: 1.25rem;
  font-weight: 600;
}

/* ── FORMULAIRE ────────────────────────────── */
.form-section { height: fit-content; }

.form-group { margin-bottom: var(--spacing-lg); }

.form-label {
  display: block;
  margin-bottom: var(--spacing-sm);
  font-weight: 600;
  color: var(--color-text-on-light);
  font-size: 0.95rem;
}

.tooltip { cursor: help; color: var(--color-text-secondary); margin-left: var(--spacing-xs); }

.input-group {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  background: var(--color-background);
  border: 1.5px solid var(--color-border);
  border-radius: var(--border-radius);
  padding: var(--spacing-sm);
  transition: border-color var(--duration-fast) var(--ease-standard),
              box-shadow var(--duration-fast) var(--ease-standard);
}

.input-group:focus-within {
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
}

/* ── SLIDERS ───────────────────────────────── */
.slider {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: var(--color-secondary);
  border-radius: var(--radius-full);
  outline: none;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid var(--color-surface);
  box-shadow: var(--shadow-sm);
  transition: background var(--duration-fast) var(--ease-standard),
              transform var(--duration-fast) var(--ease-standard);
}

.slider::-webkit-slider-thumb:hover {
  background: var(--color-primary-hover);
  transform: scale(1.1);
}

.slider::-moz-range-thumb {
  width: 20px;
  height: 20px;
  background: var(--color-primary);
  border-radius: 50%;
  cursor: pointer;
  border: 2px solid var(--color-surface);
  box-shadow: var(--shadow-sm);
}

/* ── INPUTS ────────────────────────────────── */
.form-control {
  width: 80px;
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  font-size: 0.9rem;
  text-align: center;
  background: var(--color-background);
  color: var(--color-text-on-light);
  font-family: var(--font-family-base);
  transition: border-color var(--duration-fast) var(--ease-standard),
              box-shadow var(--duration-fast) var(--ease-standard);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: var(--focus-ring);
}

select.form-control {
  width: 100%;
  background: var(--color-background);
  cursor: pointer;
  color: var(--color-text-on-light);
  -webkit-appearance: none;
  appearance: none;
  background-image: var(--select-caret-light);
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
  padding-right: 32px;
  text-align: left;
}

.currency {
  color: var(--color-text-secondary);
  font-weight: 500;
  font-size: 0.9rem;
  min-width: 30px;
  text-align: right;
}

/* ── BOUTONS ───────────────────────────────── */
.button-group {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-xl);
}

.btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  flex: 1;
  font-size: 0.95rem;
  font-family: var(--font-family-base);
  transition: background var(--duration-fast) var(--ease-standard),
              box-shadow var(--duration-fast) var(--ease-standard);
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-text-on-primary);
}
.btn--primary:hover { background: var(--color-primary-hover); }

.btn--secondary {
  background: var(--color-secondary);
  color: var(--color-text-on-light);
}
.btn--secondary:hover { background: var(--color-secondary-hover); }

/* ── RÉSULTATS ─────────────────────────────── */
.result-highlight {
  background: var(--color-background);
  border-radius: var(--border-radius);
  padding: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
  border: 1.5px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.final-amount { text-align: center; margin-bottom: var(--spacing-lg); }

.amount-label {
  display: block;
  font-size: 1rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

.amount-value {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-primary);
  display: block;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.03); }
}

.gain-display {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

.gain-item {
  text-align: center;
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.gain-profit {
  background: var(--color-background);
  border: 1.5px solid var(--color-primary);
}

.gain-label {
  display: block;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-xs);
}

.gain-value {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--color-primary);
}

/* ── PROGRESS BAR ──────────────────────────── */
.progress-section { margin: var(--spacing-lg) 0; }

.progress-label {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--spacing-sm);
  font-size: 0.9rem;
  color: var(--color-text-on-light);
}

.progress-bar {
  height: 10px;
  background: var(--color-secondary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary), #00221c);
  transition: width 0.8s ease-out;
  border-radius: var(--radius-full);
}

/* ── TABLEAU ───────────────────────────────── */
.chart-container { margin: var(--spacing-lg) 0; }

.table-container {
  max-height: 300px;
  overflow-y: auto;
  border-radius: var(--border-radius);
  border: 1px solid var(--color-border);
  background: var(--color-background);
}

.yearly-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.yearly-table th {
  background: var(--color-primary-dark);
  color: #ffffff;
  padding: var(--spacing-sm);
  text-align: left;
  font-weight: 600;
  position: sticky;
  top: 0;
  z-index: 1;
}

.yearly-table td {
  padding: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text-on-light);
  background: var(--color-background);
}

.yearly-table tr:nth-child(even) td { background: var(--color-surface); }
.yearly-table tr:hover td { background: var(--color-secondary); }

/* ── SECTION ÉDUCATIVE ─────────────────────── */
.educational-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
}

.tip-content {
  background: var(--color-background);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  font-size: 1rem;
  font-style: italic;
  color: var(--color-text-on-light);
  border-left: 4px solid var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.motivational-message {
  padding: var(--spacing-md);
  background: var(--color-background);
  border-radius: var(--border-radius);
  border: 1.5px solid var(--color-primary);
}

.motivational-message p {
  margin: 0;
  color: var(--color-primary);
  font-weight: 500;
}

/* ── CONTENU ÉDUCATIF ──────────────────────── */
.educational-content { margin-top: var(--spacing-2xl); }

.education-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-lg);
}

.education-item {
  background: var(--color-background);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius);
  border-left: 4px solid var(--color-primary);
  box-shadow: var(--shadow);
}

.education-item h4 {
  color: var(--color-primary);
  margin-bottom: var(--spacing-sm);
  font-size: 1.1rem;
}

.education-item p {
  color: var(--color-text-on-light);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* ── FOOTER ────────────────────────────────── */
.footer {
  background: var(--color-surface);
  text-align: center;
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-2xl);
  border-top: 1px solid var(--color-border);
}

.disclaimer {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  margin-top: var(--spacing-sm);
}

/* ── RESPONSIVE ────────────────────────────── */
@media (max-width: 768px) {
  .app-grid { grid-template-columns: 1fr; gap: var(--spacing-lg); }
  .header h1 { font-size: 1.8rem; }
  .amount-value { font-size: 2.5rem; }
  .gain-display { grid-template-columns: 1fr; }
  .button-group { flex-direction: column; }
  .education-grid { grid-template-columns: 1fr; }
  .container { padding: 0 var(--spacing-md); }
}

@media (max-width: 480px) {
  .input-group { flex-direction: column; align-items: stretch; }
  .form-control { width: 100%; }
  .amount-value { font-size: 2rem; }
  .header h1 { font-size: 1.6rem; }
}

/* ── ACCESSIBILITÉ ─────────────────────────── */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0;
  margin: -1px; overflow: hidden; clip: rect(0,0,0,0);
  white-space: nowrap; border-width: 0;
}
:focus-visible { outline: var(--focus-outline); outline-offset: 2px; }

@font-face {
  font-family: 'FKGroteskNeue';
  src: url('https://r2cdn.perplexity.ai/fonts/FKGroteskNeue.woff2') format('woff2');
}