/* ==========================================================================
   PlayExchh.in — main stylesheet
   Dark navy + gold theme, mobile-first, lightweight, no external fonts.
   Palette variables are also defined in critical.css.
   ========================================================================== */
:root{
  --color-primary:#ffc400;--color-primary-dark:#d69d00;
  --color-dark:#07111f;--color-dark-soft:#101b2d;
  --color-text:#172033;--color-muted:#64748b;
  --color-bg:#f6f8fb;--color-white:#ffffff;--color-border:#e5e7eb;
  --radius-lg:22px;--radius-md:14px;
  --shadow-card:0 12px 35px rgba(7,17,31,0.10);
}

/* --------------------------------------------------------------- base ---- */
*,*::before,*::after{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;
  color:var(--color-text);background:var(--color-bg);line-height:1.65;font-size:17px;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto;display:block}
a{color:var(--color-primary-dark);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3,h4{line-height:1.25;margin:0 0 .55em;color:var(--color-dark)}
h2{font-size:clamp(1.5rem,3.5vw,2rem)}
h3{font-size:1.2rem}
p{margin:0 0 1rem}
ul,ol{padding-left:1.2rem}
:focus-visible{outline:3px solid var(--color-primary);outline-offset:2px}

.container{width:100%;max-width:1140px;margin:0 auto;padding:0 20px}
.section{padding:52px 0}
.section:nth-of-type(even){background:var(--color-white)}
.section-heading{text-align:left}

/* ------------------------------------------------------------- header ---- */
.site-header{background:var(--color-dark);color:#fff;position:sticky;top:0;z-index:50;
  box-shadow:0 2px 12px rgba(7,17,31,.25)}
.header-inner{display:flex;align-items:center;gap:18px;min-height:64px}
.brand{color:#fff;font-weight:800;font-size:1.3rem;letter-spacing:-.5px}
.brand:hover{text-decoration:none}
.brand-tld{color:var(--color-primary)}
.desktop-nav{margin-left:auto}
.nav-list{display:flex;gap:18px;list-style:none;margin:0;padding:0}
.nav-list a{color:#e6edf6;font-size:.95rem;font-weight:500}
.nav-list a:hover,.nav-list a.is-active{color:var(--color-primary);text-decoration:none}
.header-cta{margin-left:8px}
.mobile-menu-toggle{display:none;background:transparent;border:0;
  flex-direction:column;gap:5px;cursor:pointer;padding:8px}
.hamburger-bar{width:24px;height:2px;background:#fff;display:block;border-radius:2px;transition:transform .2s ease,opacity .2s ease}
.mobile-menu-toggle[aria-expanded="true"] .hamburger-bar:nth-child(1){transform:translateY(7px) rotate(45deg)}
.mobile-menu-toggle[aria-expanded="true"] .hamburger-bar:nth-child(2){opacity:0}
.mobile-menu-toggle[aria-expanded="true"] .hamburger-bar:nth-child(3){transform:translateY(-7px) rotate(-45deg)}

.mobile-nav{background:var(--color-dark-soft);border-top:1px solid rgba(255,255,255,.08)}
.mobile-nav[hidden]{display:none}
.mobile-nav-list{list-style:none;margin:0;padding:8px 20px 16px}
.mobile-nav-list li{border-bottom:1px solid rgba(255,255,255,.06)}
.mobile-nav-list a{display:block;padding:12px 0;color:#e6edf6;font-weight:500}
.mobile-nav-list a:hover,.mobile-nav-list a.is-active{color:var(--color-primary);text-decoration:none}

/* -------------------------------------------------------------- buttons -- */
.btn{display:inline-block;padding:12px 22px;border-radius:999px;font-weight:700;
  font-size:.95rem;cursor:pointer;border:2px solid transparent;text-align:center;
  transition:transform .12s ease,background .12s ease,color .12s ease}
.btn:hover{transform:translateY(-1px);text-decoration:none}
.btn-primary{background:var(--color-primary);color:var(--color-dark)}
.btn-primary:hover{background:var(--color-primary-dark)}
.btn-outline{background:transparent;color:var(--color-primary);border-color:var(--color-primary)}
.btn-outline:hover{background:var(--color-primary);color:var(--color-dark)}

/* ---------------------------------------------------------------- hero --- */
.hero{background:linear-gradient(160deg,var(--color-dark),var(--color-dark-soft));color:#fff;padding:64px 0}
.hero h1{font-size:clamp(1.9rem,5vw,3rem);color:#fff}
.hero p{color:#c9d5e5}
.hero-grid{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center}
.hero-actions{display:flex;flex-wrap:wrap;gap:12px;margin:20px 0 14px}
.hero-note{font-size:.85rem;color:#9fb0c6}

/* inner page hero */
.page-hero{background:linear-gradient(160deg,var(--color-dark),var(--color-dark-soft));color:#fff;padding:52px 0}
.page-hero-title{color:#fff;font-size:clamp(1.7rem,4.5vw,2.6rem)}
.page-hero-subtitle{color:#c9d5e5;max-width:60ch}
.page-hero-actions{margin-top:18px}
.page-hero-inner.has-image{display:grid;grid-template-columns:1.1fr .9fr;gap:36px;align-items:center}
.page-hero-img{border-radius:var(--radius-lg);box-shadow:var(--shadow-card)}

/* -------------------------------------------------------------- layout --- */
.grid{display:grid;gap:22px}
.grid-2{grid-template-columns:repeat(2,1fr)}
.grid-3{grid-template-columns:repeat(3,1fr)}
.two-column{display:grid;grid-template-columns:1fr 1fr;gap:32px;align-items:start}
.content-layout{display:grid;grid-template-columns:1fr;gap:28px;max-width:820px}
.content-layout.with-sidebar{grid-template-columns:minmax(0,1fr) 300px;max-width:none}

/* ---------------------------------------------------------------- card --- */
.card{background:var(--color-white);border:1px solid var(--color-border);
  border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-card)}

.feature-card{background:var(--color-white);border:1px solid var(--color-border);
  border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-card);height:100%}
.feature-icon{font-size:1.8rem;margin-bottom:10px}
.feature-title{margin:0 0 .35em;font-size:1.1rem}
.feature-text{margin:0;color:var(--color-muted)}

/* ------------------------------------------------------------ trust bar -- */
.trust-bar{background:var(--color-dark-soft);color:#fff;padding:26px 0}
.trust-bar-inner{display:grid;grid-template-columns:repeat(4,1fr);gap:20px}
.trust-item{display:flex;gap:12px;align-items:center}
.trust-icon{font-size:1.6rem;line-height:1}
.trust-copy{display:flex;flex-direction:column}
.trust-label{font-weight:700}
.trust-text{font-size:.85rem;color:#a9b8cc}

/* ---------------------------------------------------------- cta section -- */
.cta-section{background:linear-gradient(120deg,var(--color-dark),var(--color-dark-soft));color:#fff;padding:46px 0}
.cta-box{display:flex;align-items:center;justify-content:space-between;gap:24px;flex-wrap:wrap}
.cta-box h2{color:#fff;margin-bottom:.3em}
.cta-box p{color:#c9d5e5;margin-bottom:.4em;max-width:60ch}
.cta-box small{color:#9fb0c6}

/* ---------------------------------------------------------- faq section -- */
.faq-section{padding:52px 0}
.faq-list{display:flex;flex-direction:column;gap:12px;max-width:820px}
.faq-item{background:var(--color-white);border:1px solid var(--color-border);
  border-radius:var(--radius-md);padding:4px 18px;box-shadow:var(--shadow-card)}
.faq-item summary{cursor:pointer;font-weight:600;padding:14px 0;list-style:none;
  display:flex;justify-content:space-between;align-items:center;gap:12px}
.faq-item summary::-webkit-details-marker{display:none}
.faq-item summary::after{content:"+";color:var(--color-primary-dark);font-size:1.3rem;font-weight:700}
.faq-item[open] summary::after{content:"\2212"}
.faq-item p{padding:0 0 14px;margin:0;color:var(--color-text)}

/* ------------------------------------------------------------ breadcrumb - */
.breadcrumb{background:var(--color-white);border-bottom:1px solid var(--color-border);padding:12px 0;font-size:.88rem}
.breadcrumb-list{display:flex;flex-wrap:wrap;gap:6px;list-style:none;margin:0;padding:0}
.breadcrumb-item+.breadcrumb-item::before{content:"/";color:var(--color-muted);margin-right:6px}
.breadcrumb-item span[aria-current]{color:var(--color-muted)}

/* --------------------------------------------------------------- tables -- */
.table-wrap{overflow-x:auto;margin:0 0 1.5rem}
.data-table{width:100%;border-collapse:collapse;background:var(--color-white);
  border-radius:var(--radius-md);overflow:hidden;box-shadow:var(--shadow-card)}
.data-table caption{text-align:left;font-weight:600;padding:0 0 10px;color:var(--color-muted)}
.data-table th,.data-table td{text-align:left;padding:12px 16px;border-bottom:1px solid var(--color-border);vertical-align:top}
.data-table thead th{background:var(--color-dark);color:#fff}
.data-table tbody th{background:#fbfcfe;width:38%;color:var(--color-dark)}
.data-table tr:last-child th,.data-table tr:last-child td{border-bottom:0}

/* ---------------------------------------------------------- legal notes -- */
.legal-note{background:#fff8e1;border:1px solid #f5d97a;border-left:4px solid var(--color-primary);
  border-radius:var(--radius-md);padding:16px 18px;color:#5c4a12;font-size:.95rem;margin:1.2rem 0}
.author-box{background:var(--color-white);border:1px solid var(--color-border);
  border-radius:var(--radius-md);padding:14px 18px;font-size:.92rem;color:var(--color-muted);margin:1.5rem 0}

/* ------------------------------------------------------------- sections -- */
.content-section .section-body h2{margin-top:1.5em}
.content-section .section-body h3{margin-top:1.2em}

/* ---------------------------------------------------------------- error -- */
.error-section{text-align:center;padding:70px 0}
.error-code{font-size:4rem;font-weight:800;color:var(--color-primary);margin:0}
.error-actions{display:flex;gap:12px;justify-content:center;flex-wrap:wrap;margin:20px 0 30px}
.error-links ul{list-style:none;padding:0;display:flex;flex-wrap:wrap;gap:14px;justify-content:center}

/* --------------------------------------------------------------- footer -- */
.site-footer{background:var(--color-dark);color:#c9d5e5;padding:48px 0 24px;margin-top:0}
.footer-grid{display:grid;grid-template-columns:1.5fr 1fr 1fr 1fr;gap:32px}
.footer-col h3{color:#fff;font-size:1rem;margin-bottom:.8em}
.footer-col ul{list-style:none;padding:0;margin:0}
.footer-col li{margin-bottom:8px}
.footer-col a{color:#c9d5e5;font-size:.92rem}
.footer-col a:hover{color:var(--color-primary);text-decoration:none}
.footer-logo{font-weight:800;font-size:1.2rem;color:#fff;margin-bottom:10px}
.footer-brand p{font-size:.9rem;color:#a9b8cc}
.footer-notice{font-size:.85rem}
.footer-bottom{margin-top:32px;padding-top:20px;border-top:1px solid rgba(255,255,255,.08)}
.footer-disclaimer{font-size:.82rem;color:#8ea0b8;margin-bottom:.6em}
.footer-copyright{font-size:.82rem;color:#8ea0b8;margin:0}

/* ------------------------------------------------------------ responsive - */
@media (max-width:768px){
  .hero-grid,.two-column,.footer-grid,.page-hero-inner.has-image,.content-layout.with-sidebar{grid-template-columns:1fr}
  .grid-2,.grid-3{grid-template-columns:1fr}
  .trust-bar-inner{grid-template-columns:1fr 1fr}
  .hero h1{font-size:clamp(2rem,8vw,3rem)}
  .desktop-nav,.header-cta{display:none}
  .mobile-menu-toggle{display:inline-flex}
  .cta-box{flex-direction:column;align-items:flex-start}
  .section{padding:40px 0}
}
@media (max-width:480px){
  .trust-bar-inner{grid-template-columns:1fr}
}