/* ==========================================================================
   Streamixo — Main Stylesheet
   Performance-first: system fonts, no frameworks, minimal paint cost.
   WCAG 2.2 AA: focus states, contrast, reduced-motion, target sizes.
   ========================================================================== */

:root{
  --c-bg:#0b0f1a;
  --c-bg-2:#121829;
  --c-bg-3:#1a2138;
  --c-text:#eef1f8;
  --c-muted:#aab2c8;
  --c-primary:#5b8cff;
  --c-primary-2:#7a5cff;
  --c-accent:#13d6a4;
  --c-danger:#ff5c7a;
  --c-border:#27304d;
  --radius:14px;
  --maxw:1140px;
  --font:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --shadow:0 10px 40px -12px rgba(0,0,0,.55);
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth;-webkit-text-size-adjust:100%;text-size-adjust:100%}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}

body{
  font-family:var(--font);
  background:var(--c-bg);
  color:var(--c-text);
  line-height:1.65;
  font-size:1.0625rem;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  overflow-x:hidden;
}

img,svg,video{max-width:100%;height:auto;display:block}
a{color:var(--c-primary);text-decoration:none}
a:hover{text-decoration:underline}
ul,ol{padding-left:1.25rem}
h1,h2,h3,h4{line-height:1.2;font-weight:800;letter-spacing:-.02em;margin-bottom:.6em}
h1{font-size:clamp(2rem,5vw,3.25rem)}
h2{font-size:clamp(1.6rem,3.5vw,2.4rem);margin-top:1.6em}
h3{font-size:clamp(1.25rem,2.5vw,1.6rem);margin-top:1.2em}
p{margin-bottom:1.1rem}
p:last-child{margin-bottom:0}

/* Accessibility helpers */
.skip-link{position:absolute;left:-9999px;top:0;z-index:999;background:var(--c-primary);color:#fff;padding:.75rem 1.25rem;border-radius:0 0 8px 0;font-weight:700}
.skip-link:focus{left:0}
:focus-visible{outline:3px solid var(--c-accent);outline-offset:2px;border-radius:4px}
.screen-reader-text{position:absolute!important;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

.container{max-width:var(--maxw);margin-inline:auto;padding-inline:1.25rem}
.section{padding-block:clamp(3rem,7vw,5.5rem)}
.section--alt{background:var(--c-bg-2)}
.lead{font-size:1.15rem;color:var(--c-muted);max-width:60ch}
.text-center{text-align:center}
.eyebrow{display:inline-block;font-size:.8rem;font-weight:800;letter-spacing:.12em;text-transform:uppercase;color:var(--c-accent);margin-bottom:.75rem}

/* Buttons — min 44px target (WCAG 2.5.8) */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;min-height:48px;padding:.85rem 1.6rem;border-radius:999px;font-weight:700;font-size:1rem;border:0;cursor:pointer;transition:transform .15s ease,box-shadow .15s ease;text-decoration:none}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn--primary{background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));color:#fff;box-shadow:0 8px 24px -8px rgba(91,140,255,.6)}
.btn--accent{background:var(--c-accent);color:#04231b;box-shadow:0 8px 24px -8px rgba(19,214,164,.5)}
.btn--ghost{background:transparent;color:var(--c-text);border:1.5px solid var(--c-border)}
.btn--lg{min-height:56px;padding:1rem 2.2rem;font-size:1.1rem}

/* Header */
.site-header{position:sticky;top:0;z-index:100;background:rgba(11,15,26,.82);backdrop-filter:blur(12px);border-bottom:1px solid var(--c-border)}
.site-header__inner{display:flex;align-items:center;justify-content:space-between;gap:1rem;min-height:70px}
.brand{display:flex;align-items:center;gap:.55rem;font-weight:900;font-size:1.35rem;color:var(--c-text);letter-spacing:-.03em}
.brand:hover{text-decoration:none}
.brand__dot{width:12px;height:12px;border-radius:50%;background:linear-gradient(135deg,var(--c-accent),var(--c-primary));box-shadow:0 0 12px var(--c-accent)}
.main-nav ul{display:flex;gap:1.6rem;list-style:none;padding:0;margin:0;align-items:center}
.main-nav a{color:var(--c-muted);font-weight:600;font-size:.98rem}
.main-nav a:hover,.main-nav a[aria-current="page"]{color:var(--c-text);text-decoration:none}
.nav-toggle{display:none;background:transparent;border:1.5px solid var(--c-border);color:var(--c-text);min-height:44px;min-width:44px;border-radius:10px;font-size:1.25rem;cursor:pointer}

/* Hero */
.hero{position:relative;padding-block:clamp(3.5rem,9vw,7rem);background:radial-gradient(1100px 500px at 70% -10%,rgba(122,92,255,.22),transparent 60%),radial-gradient(900px 500px at 10% 10%,rgba(19,214,164,.14),transparent 55%)}
.hero__grid{display:grid;grid-template-columns:1.15fr .85fr;gap:3rem;align-items:center}
.hero h1{margin-bottom:.4em}
.hero .lead{margin-bottom:2rem;font-size:1.25rem}
.hero__cta{display:flex;gap:1rem;flex-wrap:wrap;margin-bottom:1.5rem}
.hero__trust{display:flex;gap:1.5rem;flex-wrap:wrap;color:var(--c-muted);font-size:.92rem}
.hero__trust span{display:flex;align-items:center;gap:.4rem}
.hero__card{background:linear-gradient(160deg,var(--c-bg-3),var(--c-bg-2));border:1px solid var(--c-border);border-radius:20px;padding:2rem;box-shadow:var(--shadow)}
.hero__card h2{margin-top:0;font-size:1.3rem}
.hero__card ul{list-style:none;padding:0;margin:1rem 0 0}
.hero__card li{display:flex;gap:.6rem;padding:.5rem 0;color:var(--c-muted)}
.hero__card li::before{content:"✓";color:var(--c-accent);font-weight:900}

/* Feature grid */
.grid{display:grid;gap:1.5rem}
.grid--3{grid-template-columns:repeat(3,1fr)}
.grid--4{grid-template-columns:repeat(4,1fr)}
.card{background:var(--c-bg-2);border:1px solid var(--c-border);border-radius:var(--radius);padding:1.75rem}
.card h3{margin-top:0;font-size:1.2rem}
.card p{color:var(--c-muted);font-size:.98rem;margin:0}
.card__icon{width:46px;height:46px;border-radius:12px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,rgba(91,140,255,.2),rgba(19,214,164,.2));font-size:1.4rem;margin-bottom:1rem}

/* Pricing */
.pricing{display:grid;grid-template-columns:repeat(4,1fr);gap:1.25rem;align-items:stretch}
.plan{background:var(--c-bg-2);border:1px solid var(--c-border);border-radius:var(--radius);padding:2rem 1.5rem;display:flex;flex-direction:column;text-align:center}
.plan--featured{border-color:var(--c-primary);box-shadow:0 0 0 1px var(--c-primary),var(--shadow);position:relative}
.plan--featured::before{content:"Le plus populaire";position:absolute;top:-13px;left:50%;transform:translateX(-50%);background:linear-gradient(135deg,var(--c-primary),var(--c-primary-2));color:#fff;font-size:.75rem;font-weight:800;padding:.35rem 1rem;border-radius:999px;white-space:nowrap}
.plan__name{font-weight:800;font-size:1.1rem;color:var(--c-muted)}
.plan__price{font-size:2.4rem;font-weight:900;margin:.5rem 0}
.plan__price small{font-size:1rem;color:var(--c-muted);font-weight:600}
.plan ul{list-style:none;padding:0;margin:1.25rem 0;text-align:left;flex:1}
.plan li{padding:.45rem 0;color:var(--c-muted);display:flex;gap:.5rem}
.plan li::before{content:"✓";color:var(--c-accent);font-weight:900}
.plan .btn{width:100%}

/* FAQ */
.faq details{background:var(--c-bg-2);border:1px solid var(--c-border);border-radius:12px;margin-bottom:.85rem;overflow:hidden}
.faq summary{padding:1.15rem 1.35rem;font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;gap:1rem;min-height:44px;align-items:center}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.4rem;color:var(--c-accent);transition:transform .2s}
.faq details[open] summary::after{transform:rotate(45deg)}
.faq details > div{padding:0 1.35rem 1.35rem;color:var(--c-muted)}

/* Article / blog */
.article{max-width:760px;margin-inline:auto}
.article header{margin-bottom:2rem}
.article .meta{color:var(--c-muted);font-size:.9rem;margin-top:.75rem}
.article-body h2{margin-top:2rem}
.article-body h3{margin-top:1.5rem}
.article-body ul,.article-body ol{margin:0 0 1.1rem;padding-left:1.4rem}
.article-body li{margin-bottom:.4rem}
.article-body blockquote{border-left:4px solid var(--c-primary);padding:.5rem 0 .5rem 1.25rem;margin:1.5rem 0;color:var(--c-muted);font-style:italic}
.article-body table{width:100%;border-collapse:collapse;margin:1.5rem 0;font-size:.95rem}
.article-body th,.article-body td{border:1px solid var(--c-border);padding:.7rem .9rem;text-align:left}
.article-body th{background:var(--c-bg-3)}
.toc{background:var(--c-bg-2);border:1px solid var(--c-border);border-radius:12px;padding:1.25rem 1.5rem;margin:1.5rem 0}
.toc strong{display:block;margin-bottom:.5rem}
.toc ul{margin:0;padding-left:1.1rem}
.toc a{color:var(--c-muted)}

.breadcrumbs{font-size:.85rem;color:var(--c-muted);margin-bottom:1.5rem}
.breadcrumbs a{color:var(--c-muted)}
.breadcrumbs span[aria-current]{color:var(--c-text)}

.post-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:1.5rem}
.post-card{background:var(--c-bg-2);border:1px solid var(--c-border);border-radius:var(--radius);padding:1.5rem;display:flex;flex-direction:column}
.post-card h3{font-size:1.15rem;margin:.25rem 0 .5rem}
.post-card p{color:var(--c-muted);font-size:.95rem;flex:1}
.post-card a.more{margin-top:1rem;font-weight:700;color:var(--c-accent)}

/* CTA band */
.cta-band{background:linear-gradient(135deg,rgba(91,140,255,.18),rgba(19,214,164,.14));border:1px solid var(--c-border);border-radius:20px;padding:clamp(2rem,5vw,3.5rem);text-align:center}
.cta-band h2{margin-top:0}

/* Footer */
.site-footer{background:var(--c-bg-2);border-top:1px solid var(--c-border);padding-block:3rem 2rem;margin-top:3rem;font-size:.93rem}
.site-footer__grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:2rem;margin-bottom:2rem}
.site-footer h4{font-size:.85rem;text-transform:uppercase;letter-spacing:.1em;color:var(--c-muted);margin-bottom:1rem}
.site-footer ul{list-style:none;padding:0}
.site-footer li{margin-bottom:.55rem}
.site-footer a{color:var(--c-muted)}
.site-footer a:hover{color:var(--c-text)}
.site-footer__bottom{border-top:1px solid var(--c-border);padding-top:1.5rem;color:var(--c-muted);display:flex;justify-content:space-between;flex-wrap:wrap;gap:1rem}
.disclaimer{background:var(--c-bg-3);border:1px solid var(--c-border);border-radius:10px;padding:1rem 1.25rem;color:var(--c-muted);font-size:.85rem;margin-top:1.5rem}

/* Floating WhatsApp button — site-wide, accessible */
.wa-float{position:fixed;right:18px;bottom:18px;z-index:200;display:inline-flex;align-items:center;gap:.55rem;background:#25d366;color:#fff;font-weight:800;padding:.8rem 1.15rem;border-radius:999px;box-shadow:0 10px 30px -8px rgba(37,211,102,.6);text-decoration:none;min-height:52px;transition:transform .15s ease,box-shadow .15s ease}
.wa-float:hover{transform:translateY(-3px);text-decoration:none;box-shadow:0 14px 34px -8px rgba(37,211,102,.7)}
.wa-float:focus-visible{outline:3px solid #fff;outline-offset:3px}
.wa-float svg{flex:none}
.wa-float__txt{font-size:.98rem}
@media (max-width:560px){.wa-float{padding:.85rem;right:14px;bottom:14px}.wa-float__txt{display:none}}
@media (prefers-reduced-motion:reduce){.wa-float:hover{transform:none}}

/* Responsive */
@media (max-width:920px){
  .hero__grid{grid-template-columns:1fr;gap:2rem}
  .grid--3,.grid--4{grid-template-columns:repeat(2,1fr)}
  .pricing{grid-template-columns:repeat(2,1fr)}
  .post-grid{grid-template-columns:repeat(2,1fr)}
  .site-footer__grid{grid-template-columns:1fr 1fr}
}
@media (max-width:680px){
  .main-nav{display:none;position:absolute;top:70px;left:0;right:0;background:var(--c-bg-2);border-bottom:1px solid var(--c-border);padding:1rem 1.25rem}
  .main-nav.is-open{display:block}
  .main-nav ul{flex-direction:column;gap:.25rem;align-items:flex-start}
  .main-nav li{width:100%}
  .main-nav a{display:block;padding:.75rem 0;width:100%}
  .nav-toggle{display:inline-flex;align-items:center;justify-content:center}
  .grid--3,.grid--4,.pricing,.post-grid,.site-footer__grid{grid-template-columns:1fr}
  .hero__cta{flex-direction:column}
  .hero__cta .btn{width:100%}
}