/* ============================================================
   TempMailGo — global stylesheet
   Palette derived from logo: cyan -> blue -> violet
   ============================================================ */
:root{
  --tmg-cyan:#35c7e0;
  --tmg-teal:#22b8d6;
  --tmg-blue:#4c6fe6;
  --tmg-indigo:#5a4fe0;
  --tmg-violet:#7c4de0;
  --tmg-purple:#7c3aed;
  --tmg-grad:linear-gradient(120deg,#35c7e0 0%,#4c6fe6 45%,#7c3aed 100%);
  --tmg-grad-soft:linear-gradient(120deg,rgba(53,199,224,.14),rgba(124,58,237,.14));

  /* light theme (default) */
  --bg:#f4f7fc;
  --bg-2:#ffffff;
  --surface:#ffffff;
  --surface-2:#f7f9fd;
  --border:#e4e9f2;
  --text:#12172a;
  --text-2:#4a5470;
  --text-3:#7b849c;
  --shadow:0 10px 30px -12px rgba(28,44,89,.18);
  --shadow-lg:0 24px 60px -20px rgba(28,44,89,.28);
  --radius:16px;
  --radius-sm:10px;
  --maxw:1180px;
  --ad-bg:#eef2fa;
  --ad-border:#dce3f1;
}
[data-theme="dark"]{
  --bg:#0b1020;
  --bg-2:#0e1428;
  --surface:#141b33;
  --surface-2:#1a2340;
  --border:#25304f;
  --text:#eef2fb;
  --text-2:#b3bdd6;
  --text-3:#7f8bab;
  --shadow:0 10px 30px -12px rgba(0,0,0,.5);
  --shadow-lg:0 24px 60px -20px rgba(0,0,0,.6);
  --ad-bg:#131a30;
  --ad-border:#233054;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family:'Inter',system-ui,-apple-system,'Segoe UI',Roboto,Helvetica,Arial,sans-serif;
  background:var(--bg);
  color:var(--text);
  line-height:1.65;
  -webkit-font-smoothing:antialiased;
  transition:background .3s ease,color .3s ease;
}
a{color:var(--tmg-blue);text-decoration:none}
a:hover{text-decoration:underline}
img{max-width:100%;height:auto}
h1,h2,h3,h4{line-height:1.25;font-weight:800;letter-spacing:-.02em;color:var(--text)}
h1{font-size:clamp(1.9rem,4.5vw,3rem);margin:.2em 0 .4em}
h2{font-size:clamp(1.4rem,3vw,2rem);margin:1.6em 0 .5em}
h3{font-size:1.2rem;margin:1.4em 0 .4em}
p{margin:0 0 1em}
.container{width:100%;max-width:var(--maxw);margin:0 auto;padding:0 20px}
.gradient-text{background:var(--tmg-grad);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.visually-hidden{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;justify-content:center;gap:.5em;
  font-weight:700;font-size:.95rem;cursor:pointer;border:none;
  padding:.72em 1.3em;border-radius:var(--radius-sm);
  transition:transform .15s ease,box-shadow .2s ease,opacity .2s ease;
  text-decoration:none;white-space:nowrap;
}
.btn:hover{text-decoration:none;transform:translateY(-2px)}
.btn:active{transform:translateY(0)}
.btn-primary{background:var(--tmg-grad);color:#fff;box-shadow:0 8px 22px -8px rgba(76,111,230,.7)}
.btn-ghost{background:var(--surface-2);color:var(--text);border:1px solid var(--border)}
.btn-ghost:hover{border-color:var(--tmg-blue)}
.btn-sm{padding:.5em .9em;font-size:.85rem}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none}

/* ---------- Header / Nav ---------- */
.site-header{
  position:sticky;top:0;z-index:50;
  background:color-mix(in srgb,var(--bg-2) 82%,transparent);
  backdrop-filter:saturate(160%) blur(12px);
  border-bottom:1px solid var(--border);
}
.nav{display:flex;align-items:center;justify-content:space-between;height:68px;gap:16px}
.brand{display:flex;align-items:center;gap:2px;font-weight:800;font-size:1.4rem;color:var(--text)}
.brand:hover{text-decoration:none}
.brand img,.brand .brand-logo{width:104px;height:56px;object-fit:contain;object-position:center}
.brand span b{color:var(--tmg-blue)}
/* taller header to fit the larger logo */
.nav{height:88px}
.site-header .brand-logo{width:112px;height:60px}
.footer-brand .brand-logo{width:120px;height:64px}
@media(max-width:720px){
  .brand{font-size:1.15rem;gap:0}
  .brand img,.brand .brand-logo,.site-header .brand-logo{width:78px;height:44px}
}
.nav-links{display:flex;align-items:center;gap:6px}
.nav-links a{
  color:var(--text-2);font-weight:600;font-size:.94rem;padding:.5em .8em;border-radius:8px;
}
.nav-links a:hover{color:var(--text);background:var(--surface-2);text-decoration:none}
.nav-links a.active{color:var(--tmg-blue)}
.nav-tools{display:flex;align-items:center;gap:10px}
.theme-toggle{
  width:42px;height:42px;border-radius:12px;border:1px solid var(--border);
  background:var(--surface);cursor:pointer;font-size:1.1rem;display:grid;place-items:center;color:var(--text);
  transition:.2s;
}
.theme-toggle:hover{border-color:var(--tmg-blue)}
.nav-toggle{display:none;background:none;border:1px solid var(--border);border-radius:10px;width:42px;height:42px;font-size:1.3rem;color:var(--text);cursor:pointer}

/* ---------- Ad zones ---------- */
.ad-zone{
  background:var(--ad-bg);
  border:1px dashed var(--ad-border);
  border-radius:var(--radius-sm);
  display:flex;align-items:center;justify-content:center;
  color:var(--text-3);font-size:.78rem;letter-spacing:.12em;text-transform:uppercase;
  text-align:center;overflow:hidden;
}
.ad-label{opacity:.75}
.ad-leaderboard{min-height:90px;margin:18px 0}
.ad-inline{min-height:110px;margin:26px 0}
.ad-sidebar{min-height:600px;position:sticky;top:108px}
.ad-footer{min-height:90px;margin:24px 0}

/* ---------- Hero / App ---------- */
.hero{padding:34px 0 10px;position:relative;overflow:hidden}
.hero::before{
  content:"";position:absolute;inset:-40% -10% auto -10%;height:520px;z-index:-1;
  background:radial-gradient(60% 60% at 50% 0%,rgba(76,111,230,.16),transparent 70%);
}
.hero-head{text-align:center;max-width:760px;margin:0 auto 8px}
.hero-head p{color:var(--text-2);font-size:1.08rem}
.trust-row{display:flex;flex-wrap:wrap;gap:10px 18px;justify-content:center;margin:14px 0 4px}
.trust-pill{display:inline-flex;align-items:center;gap:7px;font-size:.85rem;color:var(--text-2);font-weight:600;background:var(--surface);border:1px solid var(--border);padding:.4em .85em;border-radius:999px}
.trust-pill svg{width:15px;height:15px;color:var(--tmg-teal)}

/* email box */
.mail-card{
  background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);
  box-shadow:var(--shadow-lg);padding:26px;margin:18px auto 0;max-width:860px;
}
.mail-card-label{font-size:.8rem;text-transform:uppercase;letter-spacing:.14em;color:var(--text-3);font-weight:700;margin-bottom:10px;display:flex;align-items:center;gap:8px}
.dot-live{width:9px;height:9px;border-radius:50%;background:#22c55e;box-shadow:0 0 0 0 rgba(34,197,94,.6);animation:pulse 2s infinite}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(34,197,94,.55)}70%{box-shadow:0 0 0 9px rgba(34,197,94,0)}100%{box-shadow:0 0 0 0 rgba(34,197,94,0)}}
.email-display{
  display:flex;align-items:center;gap:12px;flex-wrap:wrap;
  background:var(--surface-2);border:1px solid var(--border);border-radius:var(--radius-sm);
  padding:14px 18px;
}
.email-address{
  font-size:clamp(1.05rem,3vw,1.6rem);font-weight:800;letter-spacing:-.01em;
  flex:1;min-width:220px;word-break:break-all;color:var(--text);font-family:'Inter',monospace;
}
.email-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px}
.email-builder{display:flex;gap:10px;flex-wrap:wrap;margin-top:16px;align-items:center}
.email-builder input,.email-builder select{
  padding:.62em .8em;border-radius:10px;border:1px solid var(--border);background:var(--surface-2);
  color:var(--text);font-size:.95rem;font-family:inherit;
}
.email-builder input{flex:1;min-width:150px}
.email-builder select{min-width:170px;cursor:pointer}
.timer-bar{display:flex;align-items:center;gap:10px;margin-top:16px;font-size:.9rem;color:var(--text-2)}
.timer-track{flex:1;height:7px;border-radius:999px;background:var(--surface-2);overflow:hidden;border:1px solid var(--border)}
.timer-fill{height:100%;background:var(--tmg-grad);transition:width 1s linear}
.timer-val{font-weight:800;font-variant-numeric:tabular-nums;color:var(--text)}

/* toast */
.toast{
  position:fixed;bottom:24px;left:50%;transform:translateX(-50%) translateY(20px);
  background:var(--text);color:var(--bg);padding:.8em 1.3em;border-radius:12px;font-weight:600;
  box-shadow:var(--shadow-lg);opacity:0;pointer-events:none;transition:.25s;z-index:100;font-size:.92rem;
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}

/* ---------- Inbox ---------- */
.inbox-wrap{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:26px;margin-top:30px;align-items:start}
.inbox{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);overflow:hidden}
.inbox-head{display:flex;align-items:center;justify-content:space-between;padding:16px 20px;border-bottom:1px solid var(--border)}
.inbox-head h2{margin:0;font-size:1.1rem}
.inbox-count{font-size:.82rem;color:var(--text-3);font-weight:700;background:var(--surface-2);padding:.25em .7em;border-radius:999px}
.refresh-btn{background:none;border:1px solid var(--border);border-radius:9px;width:38px;height:38px;cursor:pointer;color:var(--text-2);display:grid;place-items:center;transition:.2s}
.refresh-btn:hover{color:var(--tmg-blue);border-color:var(--tmg-blue)}
.refresh-btn.spin svg{animation:spin 1s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.mail-list{list-style:none;margin:0;padding:0;min-height:260px}
.mail-item{display:flex;gap:14px;padding:16px 20px;border-bottom:1px solid var(--border);cursor:pointer;transition:background .15s;align-items:flex-start}
.mail-item:last-child{border-bottom:none}
.mail-item:hover{background:var(--surface-2)}
.mail-avatar{width:42px;height:42px;border-radius:12px;background:var(--tmg-grad-soft);display:grid;place-items:center;font-weight:800;color:var(--tmg-blue);flex-shrink:0;font-size:1rem}
.mail-meta{flex:1;min-width:0}
.mail-from{font-weight:700;font-size:.95rem;display:flex;justify-content:space-between;gap:10px}
.mail-time{font-size:.78rem;color:var(--text-3);font-weight:600;white-space:nowrap}
.mail-subject{font-size:.92rem;color:var(--text);margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mail-snippet{font-size:.85rem;color:var(--text-3);margin-top:2px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.mail-badge{display:inline-block;font-size:.68rem;font-weight:800;letter-spacing:.05em;background:var(--tmg-grad);color:#fff;padding:.15em .5em;border-radius:6px;margin-left:6px;vertical-align:middle}
.otp-chip{font-family:monospace;font-weight:800;background:var(--surface-2);border:1px dashed var(--tmg-blue);color:var(--tmg-blue);padding:.1em .45em;border-radius:6px}

/* empty state */
.inbox-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:56px 24px;color:var(--text-3)}
.inbox-empty .spinner{width:44px;height:44px;border-radius:50%;border:3px solid var(--border);border-top-color:var(--tmg-blue);animation:spin 1s linear infinite;margin-bottom:18px}
.inbox-empty h3{margin:.2em 0;color:var(--text-2)}

/* mail viewer modal */
.modal-backdrop{position:fixed;inset:0;background:rgba(8,12,26,.55);backdrop-filter:blur(3px);z-index:80;display:none;align-items:flex-start;justify-content:center;padding:30px 16px;overflow:auto}
.modal-backdrop.open{display:flex}
.modal{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-lg);width:100%;max-width:760px;overflow:hidden;animation:pop .2s ease}
@keyframes pop{from{transform:translateY(14px);opacity:0}to{transform:none;opacity:1}}
.modal-head{padding:18px 22px;border-bottom:1px solid var(--border);display:flex;justify-content:space-between;align-items:flex-start;gap:14px}
.modal-head h3{margin:0 0 4px;font-size:1.15rem}
.modal-sub{font-size:.85rem;color:var(--text-3)}
.modal-close{background:var(--surface-2);border:1px solid var(--border);border-radius:9px;width:36px;height:36px;font-size:1.2rem;cursor:pointer;color:var(--text-2);flex-shrink:0}
.modal-tabs{display:flex;gap:4px;padding:10px 22px 0}
.modal-tab{background:none;border:none;padding:.5em .9em;font-weight:700;font-size:.85rem;color:var(--text-3);cursor:pointer;border-bottom:2px solid transparent}
.modal-tab.active{color:var(--tmg-blue);border-bottom-color:var(--tmg-blue)}
.modal-body{padding:22px;max-height:60vh;overflow:auto}
.mail-html-frame{width:100%;border:none;min-height:320px;background:#fff;border-radius:8px}
.mail-attach{display:flex;align-items:center;gap:10px;padding:10px 14px;border:1px solid var(--border);border-radius:10px;margin-top:10px;font-size:.9rem}

/* ---------- Feature grid ---------- */
.section{padding:52px 0}
.section-head{text-align:center;max-width:680px;margin:0 auto 8px}
.section-head p{color:var(--text-2)}
.feature-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));gap:20px;margin-top:32px}
.feature-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:26px;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s}
.feature-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg)}
.feature-ico{width:50px;height:50px;border-radius:14px;background:var(--tmg-grad-soft);display:grid;place-items:center;margin-bottom:16px;color:var(--tmg-blue)}
.feature-ico svg{width:26px;height:26px}
.feature-card h3{margin:.1em 0 .3em;font-size:1.12rem}
.feature-card p{color:var(--text-2);font-size:.94rem;margin:0}

/* steps */
.steps{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:22px;margin-top:32px;counter-reset:step}
.step{position:relative;background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:26px 24px;box-shadow:var(--shadow)}
.step::before{counter-increment:step;content:counter(step);position:absolute;top:-16px;left:24px;width:38px;height:38px;border-radius:12px;background:var(--tmg-grad);color:#fff;font-weight:800;display:grid;place-items:center;box-shadow:0 8px 18px -6px rgba(76,111,230,.6)}
.step h3{margin:.6em 0 .3em}
.step p{color:var(--text-2);font-size:.94rem;margin:0}

/* faq accordion */
.faq{max-width:820px;margin:24px auto 0}
.faq details{background:var(--surface);border:1px solid var(--border);border-radius:12px;margin-bottom:12px;overflow:hidden}
.faq summary{padding:18px 20px;font-weight:700;cursor:pointer;list-style:none;display:flex;justify-content:space-between;align-items:center;gap:14px}
.faq summary::-webkit-details-marker{display:none}
.faq summary::after{content:"+";font-size:1.4rem;color:var(--tmg-blue);font-weight:400}
.faq details[open] summary::after{content:"–"}
.faq details p{padding:0 20px 18px;margin:0;color:var(--text-2)}

/* ---------- Content pages ---------- */
.page{padding:40px 0 20px}
.page-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:34px;align-items:start}
.prose{max-width:760px}
.prose h2{border-top:1px solid var(--border);padding-top:1.2em}
.prose h2:first-of-type{border-top:none;padding-top:0}
.prose ul,.prose ol{color:var(--text-2);padding-left:1.3em}
.prose li{margin-bottom:.5em}
.prose blockquote{border-left:4px solid var(--tmg-blue);margin:1.4em 0;padding:.5em 1.2em;background:var(--surface-2);border-radius:0 10px 10px 0;color:var(--text-2)}
.prose table{width:100%;border-collapse:collapse;margin:1.4em 0;font-size:.92rem}
.prose th,.prose td{border:1px solid var(--border);padding:.7em .9em;text-align:left}
.prose th{background:var(--surface-2);font-weight:700}
.prose code{background:var(--surface-2);border:1px solid var(--border);padding:.12em .4em;border-radius:5px;font-size:.88em}
.breadcrumb{font-size:.85rem;color:var(--text-3);margin-bottom:14px}
.breadcrumb a{color:var(--text-3)}
.eyebrow{text-transform:uppercase;letter-spacing:.16em;font-size:.78rem;font-weight:800;color:var(--tmg-blue);margin-bottom:8px}
.callout{background:var(--tmg-grad-soft);border:1px solid var(--border);border-radius:12px;padding:18px 20px;margin:1.4em 0}
.callout strong{color:var(--text)}

/* blog cards */
.blog-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:24px;margin-top:12px}
.blog-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);overflow:hidden;box-shadow:var(--shadow);transition:transform .2s,box-shadow .2s;display:flex;flex-direction:column}
.blog-card:hover{transform:translateY(-4px);box-shadow:var(--shadow-lg);text-decoration:none}
.blog-thumb{aspect-ratio:16/9;background:var(--tmg-grad);position:relative;overflow:hidden}
.blog-thumb img{width:100%;height:100%;object-fit:cover;display:block}
.blog-card-body{padding:20px;flex:1;display:flex;flex-direction:column}
.blog-tag{font-size:.72rem;font-weight:800;letter-spacing:.08em;text-transform:uppercase;color:var(--tmg-blue);margin-bottom:8px}
.blog-card h3{margin:0 0 8px;font-size:1.12rem;color:var(--text)}
.blog-card p{color:var(--text-2);font-size:.92rem;margin:0 0 14px;flex:1}
.blog-meta{font-size:.8rem;color:var(--text-3);display:flex;gap:12px}
.article-hero{aspect-ratio:21/9;border-radius:var(--radius);overflow:hidden;margin:16px 0 8px;box-shadow:var(--shadow)}
.article-hero img{width:100%;height:100%;object-fit:cover}
.article-meta{display:flex;gap:14px;align-items:center;font-size:.88rem;color:var(--text-3);margin-bottom:6px}

/* contact form */
.form-grid{display:grid;gap:16px;max-width:560px}
.form-field label{display:block;font-weight:700;font-size:.9rem;margin-bottom:6px}
.form-field input,.form-field textarea,.form-field select{width:100%;padding:.75em .9em;border-radius:10px;border:1px solid var(--border);background:var(--surface);color:var(--text);font-family:inherit;font-size:.95rem}
.form-field textarea{min-height:140px;resize:vertical}

/* ---------- Footer ---------- */
.site-footer{background:var(--bg-2);border-top:1px solid var(--border);margin-top:40px;padding:48px 0 24px}
.footer-grid{display:grid;grid-template-columns:1.6fr repeat(3,1fr);gap:32px}
.footer-brand p{color:var(--text-2);font-size:.92rem;max-width:320px;margin-top:10px}
.footer-col h4{font-size:.85rem;text-transform:uppercase;letter-spacing:.1em;color:var(--text-3);margin:0 0 14px}
.footer-col a{display:block;color:var(--text-2);font-size:.92rem;margin-bottom:9px}
.footer-col a:hover{color:var(--tmg-blue)}
.footer-bottom{border-top:1px solid var(--border);margin-top:34px;padding-top:22px;display:flex;justify-content:space-between;flex-wrap:wrap;gap:12px;color:var(--text-3);font-size:.86rem}
.footer-disclaimer{max-width:820px;color:var(--text-3);font-size:.8rem;margin-top:10px}

/* ---------- Responsive ---------- */
@media(max-width:980px){
  .inbox-wrap,.page-layout{grid-template-columns:1fr}
  .ad-sidebar{display:none}
  .footer-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:720px){
  .nav-links{
    position:absolute;top:88px;left:0;right:0;flex-direction:column;align-items:stretch;
    background:var(--bg-2);border-bottom:1px solid var(--border);padding:10px;gap:2px;display:none;
  }
  .nav-links.open{display:flex}
  .nav-links a{padding:.8em 1em}
  .nav-toggle{display:grid;place-items:center}
  .footer-grid{grid-template-columns:1fr}
  .mail-snippet{display:none}
}