/* Chiffre-en-lettres.com — redesign visuel uniquement.
   Styles isolés du PHP, des URL historiques et des règles de réécriture. */
:root {
  --ink:#101f48;
  --ink-light:#52617a;
  --blue:#0757c9;
  --blue-dark:#0649ab;
  --pale-blue:#e7f0ff;
  --orange:#f18b00;
  --border:#dbe2e;
  --soft:#f5f8fd;
  --shadow:0 13px 35px rgba(21,44,77,.09),0 2px 8px rgba(21,44,77,.025);
  --radius:17px;
}
html {scroll-behavior:smooth; scroll-padding-top:24px;}
* {box-sizing:border-box;}
body {margin:0; background:#fff; color:var(--ink); font-family:Inter,-apple-system,BlinkMacSystemFont,"Segoe UI",Arial,sans-serif; line-height:1.55; -webkit-font-smoothing:antialiased;}
a {color:var(--blue);}
button, input, select {font:inherit;}
button {cursor:pointer;}
button:focus-visible, a:focus-visible, select:focus-visible, input:focus-visible {outline:3px solid #9bc4ff;outline-offset:2px;}
.shell {width:calc(100% - 64px); max-width:1330px; margin-left:auto; margin-right:auto;}
.site-header {background:#fff;border-bottom:1px solid #e6ebf2;box-shadow:0 1px 6px rgba(16,31,72,.025);}
.header-inner {display:flex;align-items:center;justify-content:space-between;gap:36px;min-height:74px;}
.brand {display:inline-flex;align-items:center;gap:14px;white-space:nowrap;color:var(--ink)!important;text-decoration:none!important;font-weight:800;font-size:23px;letter-spacing:-.7px;}
.brand-mark {width:46px;height:43px;display:grid;place-items:center;background:linear-gradient(150deg,#1377e5,#034ba9);border-radius:10px;color:#fff;font-weight:800;font-size:20px;letter-spacing:-.4px;box-shadow:inset 0 1px 1px rgba(255,255,255,.38),0 3px 8px rgba(0,77,169,.14);}
.main-nav {display:flex;align-items:center;gap:8px;margin-left:auto;}
.main-nav .nav-link {display:inline-flex;align-items:center;gap:9px;padding:10px 13px;color:var(--ink);font-size:14px;font-weight:600;text-decoration:none;border-radius:11px;white-space:nowrap;transition:background .2s,color .2s;}
.main-nav .nav-link:hover {background:#f0f5fc;color:var(--blue);}
.main-nav .nav-link--active {background:var(--pale-blue);color:var(--blue);}
.main-nav .nav-link i {font-size:15px;}
.hero {padding:35px 0 22px;text-align:center;}
.hero h1 {font-size:clamp(29px,3.3vw,46px);line-height:1.17;margin:0 auto 10px;color:var(--ink);font-weight:790;letter-spacing:-1.5px;}
.hero p {margin:0 auto;color:#4b5874;max-width:840px;font-size:16px;line-height:1.64;}
.title-underline {text-decoration:none;position:relative;white-space:nowrap;}
.title-underline::after {content:"";position:absolute;left:6%;right:4%;bottom:-6px;border-radius:100%;height:3px;background:var(--orange);transform:rotate(-2deg);}
.converter-card {display:grid;grid-template-columns:minmax(0, 1fr) minmax(0, 1.35fr);gap:36px;padding:28px 38px 30px;border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);background:#cef7f4;}


.converter-input-panel {padding-right:30px;border-right:1px solid var(--border);}
.converter-input-panel h2,.converter-result-panel h2 {font-size:22px;font-weight:760;letter-spacing:-.5px;line-height:1.35;color:var(--ink);margin:0 0 16px;}
.number-field {position:relative;}
.number-input {width:100%;height:54px;border-radius:10px;border:1px solid #bdcbdf;background:#fff;color:var(--ink);padding:0 49px 0 17px;font-size:22px;font-weight:650;outline:none;transition:border .2s,box-shadow .2s;}
.number-input:focus {border-color:#3d88e8;box-shadow:0 0 0 3px rgba(15,103,203,.1);}
.clear-input {position:absolute;right:9px;top:50%;transform:translateY(-50%);width:36px;height:36px;background:transparent;color:#6a7892;border:0;border-radius:8px;font-size:15px;}
.clear-input:hover {background:#f2f5f9;}
.input-help {display:block;font-size:12px;color:#7d899a;margin:5px 0 13px;}
.field-label {display:block;margin:0 0 8px;color:var(--ink);font-size:15px;font-weight:730;}
.field-label span {font-weight:400;color:#5c6982;}
.select-wrap {position:relative;}
.select-wrap>i:first-child {position:absolute;top:50%;left:17px;transform:translateY(-50%);color:#425774;font-size:17px;pointer-events:none;}
.select-wrap select {display:block;appearance:none;cursor:pointer;width:100%;height:53px;padding:0 42px 0 51px;border:1px solid #bdcbdf;border-radius:10px;background:#fff;color:var(--ink);font-size:16px;font-weight:550;}
.select-wrap .select-chevron {position:absolute;right:17px;top:50%;transform:translateY(-50%);pointer-events:none;color:#52627a;font-size:13px;}
.primary-button {display:flex;align-items:center;justify-content:center;gap:13px;width:100%;height:55px;margin:20px 0 0;border:1px solid #0757c9;border-radius:11px;background:#0759c7;color:#fff;font-size:17px;font-weight:750;box-shadow:0 7px 14px rgba(4,87,190,.13);transition:background .15s,transform .15s;}
.primary-button:hover {color:#fff;background:var(--blue-dark);transform:translateY(-1px);}
.converter-result-panel {min-width:0;}
.result-header {display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:13px;}
.converter-result-panel h2 {display:flex;align-items:center;gap:13px;margin:0;}
.converter-result-panel h2 i {color:#11447f;}
.copy-button {border:1px solid #d0daea;border-radius:999px;background:#fff;color:var(--ink);font-size:14px;font-weight:650;padding:7px 16px;box-shadow:0 2px 6px rgba(26,56,90,.06);white-space:nowrap;}
.copy-button:hover {background:#f2f7ff;border-color:#a8c8f4;}
.copy-button i {margin-right:5px;}
.result-box {display:flex;flex-direction:column;justify-content:center;min-height:112px;padding:18px 25px 18px 24px;border-radius:12px;background:#f2f6fc;position:relative;overflow:hidden;}
.result-box::before {content:"";position:absolute;left:16px;top:18px;bottom:18px;width:4px;border-radius:6px;background:var(--orange);}
.result-box .card-text {font-size:clamp(21px,2.15vw,30px);font-weight:760;line-height:1.35;letter-spacing:-.45px;padding-left:17px;margin:0;color:var(--ink);overflow-wrap:anywhere;}
.result-placeholder {font-size:15px;color:#79889c;padding-left:17px;}
.currency-highlight {color:#e87900;font-weight:800;}
.button-group {display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-top:16px;}
.currency-chip {border:1px solid #d0daea;background:#fff;color:var(--ink);min-width:71px;min-height:37px;border-radius:11px;padding:6px 12px;font-size:14px;font-weight:700;transition:background .2s,border-color .2s;}
.currency-chip:hover,.currency-chip.is-active {background:#e3efff;border-color:#b4d4ff;color:#064caa;}
.tool-actions {gap:9px;margin-top:14px;}
.tool-actions button {display:inline-flex;align-items:center;justify-content:center;gap:7px;border:1px solid #d7dfec;border-radius:9px;background:#fff;color:var(--ink);padding:9px 11px;min-height:39px;font-size:13px;font-weight:650;box-shadow:0 3px 5px rgba(32,58,90,.04);}
.tool-actions button:hover {border-color:#a6c6f4;background:#f6faff;}
.benefits {display:grid;grid-template-columns:repeat(4,minmax(0,1fr));padding:27px 12px 28px;}
.benefit {display:flex;align-items:center;justify-content:center;gap:17px;padding:0 18px;border-right:1px solid var(--border);}
.benefit:last-child {border:0;}
.benefit>i {color:var(--orange);font-size:27px;min-width:29px;text-align:center;}
.benefit span {display:block;}
.benefit strong,.benefit small {display:block;}
.benefit strong {font-size:15px;line-height:1.4;font-weight:760;}
.benefit small {font-size:12px;color:#596980;line-height:1.5;margin-top:1px;}
.info-cards {display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:20px;margin:0 auto 12px;}
.info-card {padding:19px 21px 21px;background:#fff;border:1px solid #dce4ef;border-radius:15px;min-width:0;}
.info-card h2 {display:flex;align-items:center;gap:12px;font-size:18px;font-weight:760;letter-spacing:-.2px;margin:0 0 17px;color:var(--ink);}
.info-card h2 i {color:#0862cc;font-size:21px;}
.info-card:last-child h2 i {color:var(--orange);}
.steps {list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:12px;}
.steps li {display:flex;align-items:flex-start;gap:12px;font-size:13px;line-height:1.4;}
.steps li span {display:grid;place-items:center;flex:0 0 27px;height:27px;border-radius:50%;color:#0952af;background:#deebfc;font-weight:750;}
.example-list {display:flex;flex-direction:column;gap:5px;}
.example-list>div {display:grid;grid-template-columns:110px 16px 1fr;gap:8px;align-items:center;padding:3px 5px;border-radius:7px;}
.example-list>div:nth-child(even) {background:#f6f8fb;}
.example-list span {background:#e5f0ff;border-radius:8px;display:inline-block;text-align:center;padding:6px 5px;font-size:12px;font-weight:740;white-space:nowrap;}
.example-list i {font-size:14px;}
.example-list p {margin:0;font-size:12px;line-height:1.38;}
.currency-grid {display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:11px;}
.currency-grid>div {display:flex;flex-direction:column;align-items:center;justify-content:center;gap:3px;min-height:66px;border:1px solid #dbe4ee;border-radius:10px;box-shadow:0 2px 5px rgba(39,65,94,.035);padding:9px 4px;text-align:center;}
.currency-grid strong {font-size:14px;white-space:nowrap;}
.currency-grid small {font-size:10px;color:#65738a;}
.ad-placement {max-width:800px;margin:30px auto 20px;min-height:100px;text-align:center;}
.ad-placement--small {max-width:728px;margin:18px auto 23px;}
.sharing-area {display:flex;align-items:center;justify-content:center;gap:14px;margin-top:14px;font-size:13px;color:#64718a;}
.sharing-area .a2a_kit {display:flex;align-items:center;justify-content:center;}
/* 100 nombres : centrage et 10 colonnes sur les écrans suffisamment larges. */
.numbers-section {padding:24px 0 35px;text-align:center;}
.numbers-section h2 {font-size:20px;font-weight:760;letter-spacing:-.2px;margin:0 0 5px;text-align:center;}
.numbers-lead {color:#60718a;font-size:13px;line-height:1.5;margin:0 0 20px;}
.sample-links {display:grid;grid-template-columns:repeat(10,minmax(0,1fr));gap:9px;width:100%;margin:0 auto;justify-content:center;}
.sample-chip {display:flex;align-items:center;justify-content:center;min-height:39px;min-width:0;border:1px solid #d6e0ec;border-radius:999px;padding:8px 3px;color:#285c91;background:#f9fbfe;font-size:12px;font-weight:650;line-height:1.2;white-space:nowrap;text-align:center;text-decoration:none!important;transition:background .15s,border-color .15s;}
.sample-chip:hover {background:#eaf3ff;border-color:#b6d4f7;color:#054ea9;}
.seo-shell {padding-bottom:50px;}
.article-content {max-width:980px;padding:24px 32px;border:1px solid #e3eaf3;border-radius:16px;background:#fff;margin:0 auto;color:#36465f;font-size:15px;line-height:1.75;overflow-wrap:anywhere;}
.article-content h2 {font-size:22px;line-height:1.35;color:var(--ink);margin:0 0 20px;font-weight:780;}
.article-content h3 {font-size:18px;line-height:1.45;color:var(--ink);font-weight:730;margin:24px 0 12px;}
.article-content h4 {font-size:17px;color:var(--ink);font-weight:730;margin-top:25px;}
.article-content p {margin:9px 0 14px;}
.article-content ul {padding-left:23px;margin:9px 0 18px;}
.article-content li {margin-bottom:6px;}
.article-content .btn-primary {background:var(--blue);border-color:var(--blue);padding:8px 16px;border-radius:8px;}
.article-content center {text-align:center;}
.site-footer {border-top:1px solid #e4ebf3;background:#f9fbfe;color:#65738a;}
.footer-inner {display:flex;align-items:center;justify-content:center;gap:16px;min-height:65px;font-size:13px;flex-wrap:wrap;text-align:center;padding:16px 0;}
.footer-inner a {text-decoration:none;}
/* Réserve les deux colonnes publicitaires uniquement sur les grands écrans.
   Le header garde sa largeur d'origine et l'outil reste lisible. */
.side-ad {display:none;}
.ad-placement--top {width:calc(100% - 64px);max-width:900px;min-height:100px;margin:0 auto 22px;text-align:center;overflow:hidden;}
.ad-placement--top .adsbygoogle {max-width:100%;}
@media(min-width:1460px) {
  main .shell {width:calc(100% - 430px);max-width:1220px;}
  main .ad-placement--top {width:calc(100% - 430px);max-width:900px;}
  .side-ad {display:block;position:absolute;top:160px;width:160px;height:600px;z-index:1;overflow:hidden;}
  .side-ad--left {left:max(24px,calc(50% - 802px));}
  .side-ad--right {right:max(24px,calc(50% - 802px));}
  .side-ad .adsbygoogle {width:160px!important;height:600px!important;max-width:100%;}
}
@media(max-width:650px) {
  .ad-placement--top {width:calc(100% - 28px);min-height:90px;margin:0 auto 15px;}
}
@media(max-width:1200px) {
  .shell {width:calc(100% - 44px);}
  .brand {font-size:19px;}
  .header-inner {gap:15px;}
  .main-nav .nav-link {padding:10px 8px;gap:6px;font-size:12px;}
  .converter-card {gap:26px;padding:27px;grid-template-columns:1fr 1.23fr;}
  .converter-input-panel {padding-right:23px;}
  .currency-chip {min-width:60px;}
  .info-cards {gap:12px;}
  .info-card {padding:17px 14px;}
}
@media(max-width:960px) {
  .header-inner {flex-wrap:wrap;justify-content:center;padding:12px 0 9px;gap:10px;}
  .main-nav {width:100%;justify-content:center;gap:4px;margin:0;}
  .converter-card {grid-template-columns:1fr;gap:23px;}
  .converter-input-panel {padding:0 0 22px;border-right:0;border-bottom:1px solid var(--border);}
  .benefits {grid-template-columns:repeat(2,1fr);gap:18px 0;}
  .benefit:nth-child(even) {border:0;}
  .info-cards {grid-template-columns:1fr 1fr;}
  .info-card:last-child {grid-column:span 2;}
  .currency-grid {grid-template-columns:repeat(6,1fr);}
}
@media(max-width:650px) {
  .shell {width:calc(100% - 28px);}
  .header-inner {align-items:flex-start;}
  .brand {font-size:18px;gap:9px;}
  .brand-mark {width:37px;height:35px;font-size:17px;border-radius:8px;}
  .main-nav {justify-content:flex-start;overflow-x:auto;padding-bottom:3px;white-space:nowrap;scrollbar-width:none;}
  .main-nav::-webkit-scrollbar {display:none;}
  .main-nav .nav-link {padding:7px 9px;font-size:12px;}
  .hero {padding:26px 0 18px;}
  .hero h1 {font-size:29px;letter-spacing:-.9px;}
  .hero p {font-size:13px;line-height:1.62;}
  .desktop-break {display:none;}
  .converter-card {padding:19px 16px 20px;border-radius:15px;gap:20px;}
  .converter-input-panel h2,.converter-result-panel h2 {font-size:19px;}
  .number-input {font-size:21px;}
  .input-help {font-size:11px;}
  .result-box {min-height:98px;padding:16px 15px 16px 20px;}
  .result-box::before {left:11px;}
  .result-box .card-text {font-size:21px;}
  .button-group {gap:7px;}
  .currency-chip {min-width:0;flex:1 1 25%;}
  .tool-actions button {flex:1 1 26%;padding:8px 9px;font-size:12px;}
  .benefits {padding:22px 0;gap:12px 0;}
  .benefit {gap:8px;justify-content:flex-start;padding:0 10px;}
  .benefit>i {font-size:20px;min-width:25px;}
  .benefit strong {font-size:12px;}
  .benefit small {font-size:10px;}
  .info-cards {grid-template-columns:1fr;gap:13px;}
  .info-card:last-child {grid-column:auto;}
  .info-card h2 {font-size:18px;}
  .currency-grid {grid-template-columns:repeat(3,minmax(0,1fr));}
  .ad-placement {margin:20px auto 13px;}
  .sharing-area {flex-direction:column;gap:7px;}
  .numbers-section h2 {font-size:18px;}
  .article-content {padding:19px 15px;font-size:14px;}
  .article-content h2 {font-size:19px;}
  .article-content h3 {font-size:16px;}
}
/* Sur tablette et mobile, des colonnes moins nombreuses améliorent la lisibilité. */
@media (max-width:1099px) {
  .sample-links {grid-template-columns:repeat(5,minmax(0,1fr));gap:8px;}
}
@media (max-width:650px) {
  .numbers-section {padding:20px 0 28px;}
  .numbers-lead {margin-bottom:15px;}
  .sample-links {grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;}
  .sample-chip {font-size:12px;min-height:38px;padding:7px 2px;}
}
@media (max-width:360px) {
  .sample-links {grid-template-columns:repeat(2,minmax(0,1fr));}
}
@media(prefers-reduced-motion:reduce) {html {scroll-behavior:auto;} *,*::before,*::after {transition-duration:0s!important;}}
.article-content .article-convert-cta {display:flex;flex-wrap:wrap;justify-content:center;}
.article-content .faq-question {font-weight:730;color:var(--ink);}