/* ============================================================
   Shrestha Computer Institute — stylesheet
   Theme: terminal / command-line, ties visual language to the
   subject (a computer institute) instead of a generic template.
   ============================================================ */

/* ---------- Design tokens ---------- */
:root{
  --ink:        #0A1220;   /* near-black navy, terminal bg */
  --ink-2:      #101B30;   /* panel navy */
  --ink-3:      #182747;   /* raised panel / card on dark */
  --paper:      #F6F3EC;   /* warm off-white, page bg */
  --paper-2:    #ECE7DA;   /* slightly deeper paper for stripes */
  --ink-text:   #101623;   /* body text on paper */
  --slate:      #5B6472;   /* muted text */
  --line:       #DEDACB;   /* hairline on paper */
  --line-dark:  rgba(255,255,255,.10);

  /* accent (switchable at runtime via data-theme on <html>) */
  --accent:       #21C97C; /* terminal green — default */
  --accent-ink:   #06341F; /* text-on-accent for light chips */
  --accent-soft:  #DFF6EA;

  --radius: 2px;   /* sharp, terminal-flavoured corners */
  --radius-lg: 4px;

  --font-display: 'JetBrains Mono', 'Fira Code', ui-monospace, SFMono-Regular, Menlo, monospace;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  --container: 1180px;
  --nav-h: 76px;
}

html[data-theme="amber"]{ --accent:#F2A93B; --accent-ink:#402900; --accent-soft:#FCEBCC; }
html[data-theme="cyan"]{  --accent:#31C4E8; --accent-ink:#062C36; --accent-soft:#D9F3FA; }
html[data-theme="rose"]{  --accent:#FF6E8E; --accent-ink:#3E0714; --accent-soft:#FFE2E9; }

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *,*::before,*::after{ animation-duration:.001ms !important; animation-iteration-count:1 !important; transition-duration:.001ms !important; scroll-behavior:auto !important; }
}

body{
  margin:0;
  font-family:var(--font-body);
  color:var(--ink-text);
  background:var(--paper);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

h1,h2,h3,h4{
  font-family:var(--font-display);
  line-height:1.15;
  margin:0 0 .5em;
  letter-spacing:-0.01em;
  font-weight:700;
}
h1{ font-size:clamp(2rem,4.4vw,3.4rem); }
h2{ font-size:clamp(1.5rem,3vw,2.25rem); }
h3{ font-size:1.15rem; }
p{ margin:0 0 1em; color:var(--slate); }
a{ color:inherit; text-decoration:none; }
img{ max-width:100%; display:block; }
ul{ margin:0; padding:0; list-style:none; }
button{ font-family:inherit; cursor:pointer; }

.container{ width:100%; max-width:var(--container); margin:0 auto; padding:0 24px; }
.eyebrow{
  font-family:var(--font-display);
  font-size:.72rem;
  letter-spacing:.14em;
  text-transform:uppercase;
  color:var(--accent);
  display:inline-flex; align-items:center; gap:8px;
  margin-bottom:14px;
}
.eyebrow::before{ content:"$"; color:var(--slate); }

.skip-link{
  position:absolute; left:-999px; top:0; background:var(--accent); color:var(--accent-ink);
  padding:10px 16px; z-index:1000; font-family:var(--font-display); font-size:.85rem;
}
.skip-link:focus{ left:16px; top:16px; }

:focus-visible{ outline:2px solid var(--accent); outline-offset:2px; }

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex; align-items:center; gap:10px;
  font-family:var(--font-display); font-size:.85rem; font-weight:700;
  letter-spacing:.02em;
  padding:13px 22px;
  border-radius:var(--radius);
  border:1px solid transparent;
  transition:transform .15s ease, background .2s ease, border-color .2s ease, color .2s ease;
}
.btn:hover{ transform:translateY(-2px); }
.btn-primary{ background:var(--accent); color:var(--accent-ink); }
.btn-primary:hover{ background:var(--accent); filter:brightness(1.08); }
.btn-ghost{ background:transparent; color:var(--paper); border-color:rgba(255,255,255,.35); }
.btn-ghost:hover{ border-color:var(--accent); color:var(--accent); }
.btn-outline{ background:transparent; color:var(--ink-text); border-color:var(--line); }
.btn-outline:hover{ border-color:var(--accent); color:var(--accent-ink); background:var(--accent-soft); }
.btn-block{ width:100%; justify-content:center; }

/* ============================================================
   Header / sticky nav
   ============================================================ */
.site-header{
  position:sticky; top:0; z-index:500;
  background:rgba(10,18,32,.92);
  backdrop-filter:saturate(140%) blur(10px);
  border-bottom:1px solid var(--line-dark);
  transition:box-shadow .25s ease, background .25s ease;
}
.site-header.is-scrolled{ box-shadow:0 8px 30px -12px rgba(0,0,0,.5); }

.nav{
  display:flex; align-items:center; justify-content:space-between;
  height:var(--nav-h);
}
.brand{ display:flex; align-items:center; gap:12px; color:var(--paper); }
.brand-mark{
  width:42px; height:42px; border-radius:var(--radius);
  overflow:hidden; flex:none; position:relative;
  background:linear-gradient(155deg,var(--ink-3),var(--ink-2));
  border:1px solid var(--line-dark);
}
.brand-mark img{ width:100%; height:100%; object-fit:cover; }
.brand-mark .mark-fallback{
  position:absolute; inset:0; display:flex; align-items:center; justify-content:center;
  font-family:var(--font-display); font-weight:700; font-size:.95rem; color:var(--accent);
}
.brand-text{ display:flex; flex-direction:column; line-height:1.15; }
.brand-name{ font-family:var(--font-display); font-weight:700; font-size:1rem; color:var(--paper); }
.brand-tag{ font-size:.68rem; letter-spacing:.08em; text-transform:uppercase; color:var(--slate); }

.nav-links{ display:flex; align-items:center; gap:34px; }
.nav-links a{
  font-family:var(--font-display); font-size:.86rem; color:#C9D0DD;
  position:relative; padding:6px 0;
}
.nav-links a::after{
  content:""; position:absolute; left:0; right:100%; bottom:0; height:2px; background:var(--accent);
  transition:right .2s ease;
}
.nav-links a:hover::after, .nav-links a[aria-current="page"]::after{ right:0; }
.nav-links a[aria-current="page"]{ color:var(--paper); }

.nav-actions{ display:flex; align-items:center; gap:10px; }

/* theme-switch icon button */
.theme-switch{
  width:40px; height:40px; border-radius:50%;
  border:1px solid var(--line-dark); background:var(--ink-2);
  display:flex; align-items:center; justify-content:center;
  color:var(--paper); transition:border-color .2s ease, transform .2s ease;
}
.theme-switch:hover{ border-color:var(--accent); transform:rotate(18deg); }
.theme-switch svg{ width:18px; height:18px; }
.theme-switch .swatch{ fill:var(--accent); }

.nav-toggle{
  display:none; width:40px; height:40px; border-radius:var(--radius);
  border:1px solid var(--line-dark); background:var(--ink-2); color:var(--paper);
  align-items:center; justify-content:center;
}
.nav-toggle svg{ width:20px; height:20px; }

@media (max-width: 900px){
  .nav-links{
    position:fixed; inset:var(--nav-h) 0 auto 0; flex-direction:column; align-items:flex-start;
    gap:0; background:var(--ink); border-bottom:1px solid var(--line-dark);
    padding:8px 24px 20px; transform:translateY(-8px); opacity:0; pointer-events:none;
    transition:opacity .2s ease, transform .2s ease;
  }
  .nav-links.is-open{ opacity:1; transform:translateY(0); pointer-events:auto; }
  .nav-links a{ width:100%; padding:14px 0; border-bottom:1px solid var(--line-dark); }
  .nav-toggle{ display:flex; }
}

/* ============================================================
   Hero — terminal window (signature element)
   ============================================================ */
.hero{
  background:
    radial-gradient(circle at 15% 20%, rgba(33,201,124,.10), transparent 45%),
    var(--ink);
  color:var(--paper);
  position:relative; overflow:hidden;
  padding:76px 0 96px;
}
.hero::after{ /* faint scanlines */
  content:""; position:absolute; inset:0; pointer-events:none; opacity:.5;
  background:repeating-linear-gradient(0deg, rgba(255,255,255,.015) 0 1px, transparent 1px 3px);
}
.hero-grid{ display:grid; grid-template-columns:1.05fr .95fr; gap:56px; align-items:center; position:relative; z-index:1; }
@media (max-width:960px){ .hero-grid{ grid-template-columns:1fr; } }

.hero h1{ color:var(--paper); }
.hero h1 .accent{ color:var(--accent); }
.hero-lede{ font-size:1.05rem; max-width:46ch; color:#B7BFCE; }
.hero-cta{ display:flex; gap:14px; flex-wrap:wrap; margin-top:28px; }

.hero-stats{ display:flex; gap:28px; margin-top:44px; flex-wrap:wrap; }
.hero-stat b{ display:block; font-family:var(--font-display); font-size:1.6rem; color:var(--accent); }
.hero-stat span{ font-size:.78rem; color:var(--slate); text-transform:uppercase; letter-spacing:.06em; }

.terminal{
  background:var(--ink-2); border:1px solid var(--line-dark); border-radius:var(--radius-lg);
  box-shadow:0 30px 60px -20px rgba(0,0,0,.6);
  overflow:hidden;
}
.terminal-bar{
  display:flex; align-items:center; gap:8px; padding:12px 14px;
  background:var(--ink-3); border-bottom:1px solid var(--line-dark);
}
.terminal-bar span{ width:11px; height:11px; border-radius:50%; display:inline-block; }
.terminal-bar span:nth-child(1){ background:#FF6259; }
.terminal-bar span:nth-child(2){ background:#FFBD2E; }
.terminal-bar span:nth-child(3){ background:#28C93F; }
.terminal-title{ margin-left:8px; font-family:var(--font-display); font-size:.75rem; color:var(--slate); }
.terminal-body{
  padding:22px 20px 28px; font-family:var(--font-display); font-size:.86rem; color:#CDE9DA;
  min-height:230px;
}
.terminal-body .line{ margin-bottom:8px; white-space:pre-wrap; word-break:break-word; }
.terminal-body .prompt{ color:var(--accent); }
.terminal-body .muted{ color:#7F8AA0; }
.terminal-cursor{ display:inline-block; width:8px; height:1em; background:var(--accent); vertical-align:text-bottom; animation:blink 1s steps(1) infinite; }
@keyframes blink{ 50%{ opacity:0; } }

/* ============================================================
   Sections / cards
   ============================================================ */
section{ padding:88px 0; }
.section-alt{ background:var(--paper-2); }
.section-dark{ background:var(--ink); color:var(--paper); }
.section-dark p{ color:#AEB6C4; }
.section-dark h2{ color:var(--paper); }

.section-head{ max-width:640px; margin-bottom:48px; }
.section-head.center{ margin-left:auto; margin-right:auto; text-align:center; }

.grid{ display:grid; gap:26px; }
.grid-3{ grid-template-columns:repeat(3,1fr); }
.grid-4{ grid-template-columns:repeat(4,1fr); }
.grid-2{ grid-template-columns:repeat(2,1fr); }
@media (max-width:900px){ .grid-3,.grid-4{ grid-template-columns:repeat(2,1fr); } }
@media (max-width:620px){ .grid-2,.grid-3,.grid-4{ grid-template-columns:1fr; } }

.card{
  background:#fff; border:1px solid var(--line); border-radius:var(--radius-lg);
  padding:28px; transition:transform .2s ease, box-shadow .2s ease, border-color .2s ease;
}
.card:hover{ transform:translateY(-4px); box-shadow:0 20px 40px -24px rgba(16,22,35,.28); border-color:var(--accent); }
.card .idx{ font-family:var(--font-display); font-size:.75rem; color:var(--accent); letter-spacing:.08em; }
.card h3{ margin-top:10px; }
.card p{ margin-bottom:0; font-size:.94rem; }

.icon-badge{
  width:46px; height:46px; border-radius:var(--radius);
  background:var(--accent-soft); color:var(--accent-ink);
  display:flex; align-items:center; justify-content:center; margin-bottom:16px;
}
.icon-badge svg{ width:22px; height:22px; }

/* course cards */
.course-card{ display:flex; flex-direction:column; height:100%; }
.course-meta{ display:flex; gap:14px; margin:14px 0; font-size:.78rem; color:var(--slate); font-family:var(--font-display); flex-wrap:wrap; }
.course-meta span{ display:flex; align-items:center; gap:6px; }
.course-tools{ display:flex; flex-wrap:wrap; gap:8px; margin:14px 0 20px; }
.chip{ font-size:.72rem; font-family:var(--font-display); padding:5px 10px; border-radius:100px; background:var(--paper-2); color:var(--ink-text); border:1px solid var(--line); }
.course-card .btn{ margin-top:auto; align-self:flex-start; }

/* stats strip */
.stats-strip{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:32px; padding:44px 0; border-top:1px solid var(--line-dark); border-bottom:1px solid var(--line-dark); }
.stat b{ font-family:var(--font-display); font-size:2.1rem; color:var(--accent); display:block; }
.stat span{ font-size:.78rem; text-transform:uppercase; letter-spacing:.08em; color:var(--slate); }

/* timeline (about) */
.timeline{ border-left:2px solid var(--line); margin-left:8px; }
.timeline-item{ position:relative; padding:0 0 34px 28px; }
.timeline-item::before{ content:""; position:absolute; left:-7px; top:4px; width:12px; height:12px; border-radius:50%; background:var(--accent); border:3px solid var(--paper); }
.timeline-item b{ font-family:var(--font-display); color:var(--accent); display:block; font-size:.8rem; margin-bottom:4px; }

/* testimonial */
.quote-card{ background:var(--ink); color:var(--paper); border-radius:var(--radius-lg); padding:30px; }
.quote-card p{ color:#CBD2DF; font-size:1rem; }
.quote-who{ display:flex; align-items:center; gap:12px; margin-top:16px; }
.quote-avatar{ width:40px; height:40px; border-radius:50%; background:var(--accent-soft); color:var(--accent-ink); display:flex; align-items:center; justify-content:center; font-family:var(--font-display); font-weight:700; }
.quote-name{ font-size:.85rem; font-weight:700; }
.quote-role{ font-size:.75rem; color:var(--slate); }

/* CTA band */
.cta-band{
  background:linear-gradient(120deg,var(--ink-2),var(--ink));
  color:var(--paper); border-radius:var(--radius-lg); padding:56px; text-align:center;
  border:1px solid var(--line-dark);
}
.cta-band h2{ color:var(--paper); }
.cta-band .btn-primary{ margin-top:10px; }

/* ============================================================
   Forms (Contact)
   ============================================================ */
.form-shell{ background:#fff; border:1px solid var(--line); border-radius:var(--radius-lg); padding:32px; }
.field{ margin-bottom:20px; }
.field label{ display:block; font-family:var(--font-display); font-size:.78rem; letter-spacing:.03em; margin-bottom:8px; color:var(--ink-text); }
.field label .req{ color:#D1445A; }
.field input, .field select, .field textarea{
  width:100%; padding:13px 14px; border:1px solid var(--line); border-radius:var(--radius);
  font-family:var(--font-body); font-size:.95rem; background:var(--paper); color:var(--ink-text);
  transition:border-color .2s ease, box-shadow .2s ease;
}
.field input:focus, .field select:focus, .field textarea:focus{
  outline:none; border-color:var(--accent); box-shadow:0 0 0 3px var(--accent-soft);
}
.field textarea{ resize:vertical; min-height:130px; }
.field-row{ display:grid; grid-template-columns:1fr 1fr; gap:18px; }
@media (max-width:620px){ .field-row{ grid-template-columns:1fr; } }
.field-error{ font-size:.78rem; color:#D1445A; margin-top:6px; display:none; }
.field.has-error input, .field.has-error select, .field.has-error textarea{ border-color:#D1445A; }
.field.has-error .field-error{ display:block; }
.field-hint{ font-size:.78rem; color:var(--slate); margin-top:6px; }

.form-note{
  display:flex; gap:10px; align-items:flex-start; padding:14px 16px; border-radius:var(--radius);
  background:var(--accent-soft); color:var(--accent-ink); font-size:.88rem; margin-bottom:22px;
}
.form-alert{ padding:16px 18px; border-radius:var(--radius); margin-bottom:22px; font-size:.92rem; display:none; }
.form-alert.show{ display:block; }
.form-alert.success{ background:#DFF6EA; color:#0A4B2C; border:1px solid #9FE0BE; }
.form-alert.error{ background:#FCE4E7; color:#7A1226; border:1px solid #F3AEB8; }

.contact-info-list{ display:flex; flex-direction:column; gap:22px; }
.contact-info-item{ display:flex; gap:16px; }
.contact-info-item .icon-badge{ margin-bottom:0; flex:none; }
.contact-info-item h4{ font-family:var(--font-display); font-size:.92rem; margin:0 0 4px; }
.contact-info-item p{ margin:0; font-size:.9rem; }

.map-wrap{ border-radius:var(--radius-lg); overflow:hidden; border:1px solid var(--line); margin-top:24px; }
.map-wrap iframe{ width:100%; height:280px; border:0; display:block; }

.social-row{ display:flex; gap:10px; margin-top:24px; }
.social-row a{
  width:38px; height:38px; border-radius:50%; border:1px solid var(--line);
  display:flex; align-items:center; justify-content:center; color:var(--ink-text);
  transition:border-color .2s ease, color .2s ease, transform .2s ease;
}
.social-row a:hover{ border-color:var(--accent); color:var(--accent-ink); background:var(--accent-soft); transform:translateY(-2px); }
.social-row svg{ width:17px; height:17px; }

/* FAQ (accordion) */
.faq-item{ border-bottom:1px solid var(--line); }
.faq-q{
  width:100%; text-align:left; background:none; border:none; padding:20px 0;
  display:flex; align-items:center; justify-content:space-between; gap:16px;
  font-family:var(--font-display); font-size:.95rem; color:var(--ink-text);
}
.faq-q svg{ width:18px; height:18px; flex:none; transition:transform .25s ease; color:var(--accent); }
.faq-item.is-open .faq-q svg{ transform:rotate(45deg); }
.faq-a{ max-height:0; overflow:hidden; transition:max-height .25s ease; }
.faq-item.is-open .faq-a{ max-height:240px; }
.faq-a p{ padding-bottom:20px; margin:0; }

/* ============================================================
   Footer
   ============================================================ */
.site-footer{ background:var(--ink); color:#AEB6C4; padding:64px 0 28px; }
.footer-grid{ display:grid; grid-template-columns:1.4fr 1fr 1fr 1fr; gap:40px; padding-bottom:40px; border-bottom:1px solid var(--line-dark); }
@media (max-width:900px){ .footer-grid{ grid-template-columns:1fr 1fr; } }
@media (max-width:560px){ .footer-grid{ grid-template-columns:1fr; } }
.footer-grid h4{ font-family:var(--font-display); color:var(--paper); font-size:.85rem; margin-bottom:16px; letter-spacing:.04em; text-transform:uppercase; }
.footer-grid ul li{ margin-bottom:10px; }
.footer-grid a:hover{ color:var(--accent); }
.footer-bottom{ display:flex; justify-content:space-between; align-items:center; padding-top:24px; flex-wrap:wrap; gap:12px; font-size:.82rem; }
.footer-brand{ display:flex; align-items:center; gap:12px; margin-bottom:14px; }
.footer-brand .brand-name{ color:var(--paper); }

/* misc */
.badge-row{ display:flex; gap:10px; flex-wrap:wrap; margin-top:18px; }
.badge{ font-family:var(--font-display); font-size:.72rem; padding:6px 12px; border:1px solid var(--line-dark); border-radius:100px; color:var(--paper); }

.page-hero{
  background:var(--ink); color:var(--paper); padding:64px 0 56px; position:relative; overflow:hidden;
}
.page-hero::after{ content:""; position:absolute; inset:0; opacity:.5; pointer-events:none;
  background:repeating-linear-gradient(0deg, rgba(255,255,255,.015) 0 1px, transparent 1px 3px); }
.page-hero .eyebrow{ position:relative; z-index:1; }
.page-hero h1{ color:var(--paper); position:relative; z-index:1; max-width:800px; }
.page-hero p{ position:relative; z-index:1; max-width:60ch; color:#B7BFCE; }
.breadcrumb{ font-family:var(--font-display); font-size:.78rem; color:var(--slate); margin-bottom:16px; position:relative; z-index:1; }
.breadcrumb a:hover{ color:var(--accent); }

.two-col{ display:grid; grid-template-columns:1fr 1fr; gap:56px; align-items:center; }
@media (max-width:860px){ .two-col{ grid-template-columns:1fr; } }

.facility-media{
  aspect-ratio:4/3; border-radius:var(--radius-lg); background:linear-gradient(150deg,var(--ink-3),var(--ink-2));
  border:1px solid var(--line-dark); display:flex; align-items:center; justify-content:center; color:var(--slate);
  font-family:var(--font-display); font-size:.8rem; text-align:center; padding:20px;
}

table.fee-table{ width:100%; border-collapse:collapse; font-size:.92rem; }
table.fee-table th, table.fee-table td{ text-align:left; padding:14px 16px; border-bottom:1px solid var(--line); }
table.fee-table th{ font-family:var(--font-display); font-size:.75rem; letter-spacing:.05em; text-transform:uppercase; color:var(--slate); background:var(--paper-2); }
table.fee-table tr:hover td{ background:var(--paper-2); }
.table-wrap{ overflow-x:auto; border:1px solid var(--line); border-radius:var(--radius-lg); }
.table-wrap table{ min-width:600px; }

/* reveal-on-scroll */
.reveal{ opacity:0; transform:translateY(18px); transition:opacity .5s ease, transform .5s ease; }
.reveal.is-visible{ opacity:1; transform:none; }
