/* =========================
   ISDTDE — styles.css
   Clean, modern, responsive
   ========================= */

:root{
  --bg: #0b1020;
  --bg2: #0f1730;
  --card: rgba(255,255,255,.06);
  --card2: rgba(255,255,255,.08);
  --text: rgba(255,255,255,.92);
  --muted: rgba(255,255,255,.72);
  --muted2: rgba(255,255,255,.58);
  --line: rgba(255,255,255,.12);
  --primary: #6aa7ff;
  --primary2:#9ad0ff;
  --accent: #5ef0c7;
  --shadow: 0 12px 30px rgba(0,0,0,.35);

  --radius: 18px;
  --radius2: 26px;

  --max: 1180px;
  --pad: 22px;
  --font: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji","Segoe UI Emoji";
}

[data-theme="light"]{
  --bg: #f6f7fb;
  --bg2:#eef1ff;
  --card: rgba(15, 23, 42, .05);
  --card2: rgba(15, 23, 42, .08);
  --text: rgba(15, 23, 42, .92);
  --muted: rgba(15, 23, 42, .72);
  --muted2: rgba(15, 23, 42, .58);
  --line: rgba(15, 23, 42, .14);
  --shadow: 0 12px 30px rgba(15,23,42,.12);
}

*{ box-sizing: border-box; }
html, body{ height: 100%; }
body{
  margin: 0;
  font-family: var(--font);
  background: radial-gradient(1200px 700px at 20% 0%, rgba(106,167,255,.25), transparent 60%),
              radial-gradient(900px 600px at 80% 10%, rgba(94,240,199,.18), transparent 55%),
              linear-gradient(180deg, var(--bg), var(--bg2));
  color: var(--text);
  line-height: 1.55;
}

a{ color: inherit; text-decoration: none; }
a.link{ color: var(--primary2); }
a.link:hover{ text-decoration: underline; }

img{ max-width: 100%; display: block; }

.container{
  width: min(var(--max), calc(100% - 2*var(--pad)));
  margin-inline: auto;
}

.skip-link{
  position: absolute; left: -999px; top: 10px;
  padding: 10px 14px; border-radius: 10px;
  background: var(--primary); color: #000;
}
.skip-link:focus{ left: 10px; z-index: 999; }

.sr-only{
  position:absolute; width:1px; height:1px; padding:0; margin:-1px; overflow:hidden;
  clip:rect(0,0,0,0); white-space:nowrap; border:0;
}

.hide-sm{ display: inline; }
@media (max-width: 720px){ .hide-sm{ display:none; } }

.topbar{
  border-bottom: 1px solid var(--line);
  background: rgba(0,0,0,.12);
  backdrop-filter: blur(10px);
}
.topbar__inner{
  display:flex; align-items:center; justify-content:space-between;
  gap: 12px; padding: 10px 0;
}
.pill{
  display:inline-flex; align-items:center; gap: 8px;
  padding: 6px 10px; border-radius: 999px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.04);
  color: var(--muted);
  font-size: 13px;
}
.topbar__right{ display:flex; align-items:center; gap: 10px; }

.header{
  position: sticky; top: 0; z-index: 60;
  background: rgba(0,0,0,.18);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}
.header__inner{
  display:flex; align-items:center; justify-content:space-between;
  gap: 14px; padding: 12px 0;
}

.brand{ display:flex; align-items:center; gap: 12px; min-width: 220px; }
.brand__logo{ width: 46px; height: 46px; }
.brand__name{ font-weight: 800; letter-spacing: .3px; }
.brand__tag{ font-size: 12.5px; color: var(--muted2); margin-top: 1px; }

.nav{ display:flex; align-items:center; }
.nav__toggle{
  display:none;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.04);
  border-radius: 12px;
  padding: 10px 12px;
}
.nav__toggleBars{
  display:block; width: 20px; height: 12px;
  background:
    linear-gradient(var(--text), var(--text)) 0 0 / 100% 2px no-repeat,
    linear-gradient(var(--text), var(--text)) 0 50% / 100% 2px no-repeat,
    linear-gradient(var(--text), var(--text)) 0 100% / 100% 2px no-repeat;
  opacity: .9;
}

.nav__menu{
  display:flex; align-items:center; gap: 16px;
}
.nav__menu a{
  padding: 9px 10px;
  border-radius: 12px;
  color: var(--muted);
  font-weight: 600;
  font-size: 14px;
}
.nav__menu a:hover{
  background: rgba(255,255,255,.05);
  color: var(--text);
}
.nav__cta{
  border: 1px solid var(--line);
  background: rgba(255,255,255,.04);
}

@media (max-width: 920px){
  .nav__toggle{ display:inline-flex; }
  .nav__menu{
    position: absolute;
    right: var(--pad);
    top: 68px;
    width: min(360px, calc(100% - 2*var(--pad)));
    display:none;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    padding: 10px;
    border-radius: var(--radius);
    border: 1px solid var(--line);
    background: rgba(10, 16, 32, .92);
    box-shadow: var(--shadow);
  }
  [data-theme="light"] .nav__menu{ background: rgba(246,247,251,.96); }
  .nav__menu.is-open{ display:flex; }
}

.hero{
  position: relative;
  overflow:hidden;
  padding: 52px 0 26px;
}
.hero__inner{
  display:grid;
  grid-template-columns: 1.2fr .85fr;
  gap: 18px;
  align-items: start;
}
@media (max-width: 980px){
  .hero__inner{ grid-template-columns: 1fr; }
}

.hero__content h1{
  font-size: clamp(30px, 3.2vw, 44px);
  line-height: 1.1;
  margin: 8px 0 14px;
}
.lead{
  font-size: 16.5px;
  color: var(--muted);
  max-width: 58ch;
}

.hero__cta{ display:flex; gap: 10px; flex-wrap: wrap; margin-top: 18px; }

.hero__stats{
  display:flex; gap: 12px; flex-wrap: wrap;
  margin-top: 22px;
}
.stat{
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: rgba(255,255,255,.04);
  min-width: 170px;
}
.stat__k{ font-size: 20px; font-weight: 900; }
.stat__v{ color: var(--muted2); font-size: 13px; }

.hero__card{ position: relative; }
.card{
  border: 1px solid var(--line);
  border-radius: var(--radius2);
  background: var(--card);
  padding: 18px;
  box-shadow: var(--shadow);
}
.card--glass{
  background: linear-gradient(180deg, rgba(255,255,255,.08), rgba(255,255,255,.05));
  backdrop-filter: blur(10px);
}

.h3{ margin: 0 0 10px; font-size: 18px; }

.cluster{ padding: 10px 2px; }
.cluster__title{ font-size: 12.5px; color: var(--muted2); text-transform: uppercase; letter-spacing: .12em; }
.cluster__name{ font-weight: 900; font-size: 18px; margin-top: 4px; }
.cluster__desc{ margin: 6px 0 0; color: var(--muted); }

.divider{ height: 1px; background: var(--line); margin: 12px 0; }
.note{ color: var(--muted); font-size: 14px; }

.hero__bg{
  position:absolute; inset: -40% -30% auto -30%;
  height: 520px;
  background:
    radial-gradient(circle at 30% 50%, rgba(106,167,255,.22), transparent 55%),
    radial-gradient(circle at 70% 40%, rgba(94,240,199,.18), transparent 55%);
  filter: blur(0px);
  z-index: -1;
}

.section{ padding: 44px 0; }
.section--accent{
  padding: 42px 0;
  background: linear-gradient(90deg, rgba(106,167,255,.22), rgba(94,240,199,.12));
  border-top: 1px solid var(--line);
  border-bottom: 1px solid var(--line);
}

.section__header{ margin-bottom: 18px; }
.section__header h2{ margin: 0 0 8px; font-size: 26px; }
.muted{ color: var(--muted); }

.grid{ display:grid; gap: 14px; }
.grid--3{ grid-template-columns: repeat(3, 1fr); }
@media (max-width: 980px){ .grid--3{ grid-template-columns: 1fr; } }

.card h3{ margin: 0 0 8px; font-size: 18px; }
.card p{ margin: 0 0 10px; color: var(--muted); }

.btn{
  display:inline-flex; align-items:center; justify-content:center; gap: 8px;
  padding: 11px 14px;
  border-radius: 14px;
  border: 1px solid transparent;
  font-weight: 800;
  cursor: pointer;
  transition: transform .06s ease, background .2s ease, border-color .2s ease;
}
.btn:active{ transform: translateY(1px); }
.btn--sm{ padding: 8px 10px; border-radius: 12px; font-weight: 800; font-size: 13px; }

.btn--primary{
  color: #061021;
  background: linear-gradient(180deg, var(--primary2), var(--primary));
}
.btn--secondary{
  background: rgba(255,255,255,.06);
  border-color: var(--line);
  color: var(--text);
}
.btn--ghost{
  background: rgba(255,255,255,.04);
  border-color: var(--line);
  color: var(--muted);
}
.btn--invert{
  background: rgba(0,0,0,.22);
  border-color: rgba(0,0,0,.22);
  color: #fff;
}
.btn--ghostInvert{
  background: transparent;
  border-color: rgba(0,0,0,.22);
  color: rgba(0,0,0,.92);
}
[data-theme="dark"] .btn--ghostInvert{
  border-color: rgba(255,255,255,.28);
  color: rgba(255,255,255,.92);
}

.ctaBand{
  display:flex; align-items:center; justify-content:space-between; gap: 16px;
}
@media (max-width: 920px){ .ctaBand{ flex-direction: column; align-items: flex-start; } }
.ctaBand__title{ margin: 0 0 6px; }
.ctaBand__text{ margin: 0; color: var(--muted); max-width: 70ch; }
.ctaBand__actions{ display:flex; gap: 10px; flex-wrap: wrap; }

.footer{
  padding: 28px 0 16px;
  border-top: 1px solid var(--line);
  background: rgba(0,0,0,.12);
}
.footer__inner{
  display:flex; gap: 22px; justify-content:space-between; align-items:flex-start;
  flex-wrap: wrap;
}
.footer__brand{ display:flex; align-items:center; gap: 12px; min-width: 260px; }
.footer__logo{ width: 40px; height: 40px; }
.footer__name{ font-weight: 900; }
.footer__muted{ color: var(--muted2); font-size: 13px; }

.footer__cols{
  display:grid;
  grid-template-columns: repeat(3, minmax(160px, 1fr));
  gap: 18px;
}
@media (max-width: 900px){ .footer__cols{ grid-template-columns: 1fr; width: 100%; } }
.footer__col{ display:flex; flex-direction:column; gap: 8px; }
.footer__title{ font-weight: 900; margin-bottom: 2px; }
.footer__col a{ color: var(--muted); }
.footer__col a:hover{ color: var(--text); text-decoration: underline; }

.footer__bottom{
  display:flex; justify-content:space-between; align-items:center;
  gap: 10px;
  margin-top: 18px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  color: var(--muted2);
  font-size: 13px;
  flex-wrap: wrap;
}

/* =========================
   Mobile & Tablet Polish
   Paste at END of styles.css
   ========================= */

/* Prevent horizontal scrolling from long titles/URLs */
html, body { overflow-x: hidden; }
* { overflow-wrap: anywhere; word-break: break-word; }

/* iOS: prevent zoom-in on form fields (must be >= 16px) */
input, select, textarea { font-size: 16px; }

/* Safe-area padding for iOS notches */
body{
  padding-left: env(safe-area-inset-left);
  padding-right: env(safe-area-inset-right);
}

/* Touch targets: 44px minimum */
.btn, .nav__menu a, .nav__toggle { min-height: 44px; }

/* If you ever use tables: wrap them to scroll */
.tableWrap{
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius);
  border: 1px solid var(--line);
}

/* Tablet tuning */
@media (max-width: 980px){
  :root{ --pad: 18px; }
  .section{ padding: 22px 0; }
  .grid{ gap: 12px; }
}

/* Small phones */
@media (max-width: 520px){
  :root{
    --pad: 14px;
    --radius2: 18px;
  }

  .topbar__inner{ gap: 10px; }
  .header__inner{ gap: 12px; }

  .hero{ padding: 38px 0 18px; }
  .card{ padding: 14px; }

  /* Mobile menu should fit the screen */
  .nav__menu{
    right: var(--pad);
    left: var(--pad);
    min-width: unset;
  }

  /* Reduce “dense” feel */
  .grid{ gap: 10px; }
}

/* Extra small phones */
@media (max-width: 380px){
  .brand__tag{ display:none; } /* optional, reduces header wrapping */
  .brand__logo{ width: 42px; height: 42px; }
}

img{ max-width:100%; height:auto; }