/*
Theme Name: RTU ISST
Theme URI: https://isst.rtu.lv
Description: Official theme for RTU International School of Science & Technology. Mark Pro typography, ISST brand colours, Cambridge-compliant, responsive.
Version: 1.0.0
Author: RTU ISST
Author URI: https://isst.rtu.lv
Text Domain: rtu-isst
Requires at least: 6.0
Requires PHP: 8.0
License: Private
*/

/* ==========================================
   MARK PRO FONT
   ========================================== */
@font-face {
  font-family: 'Mark Pro';
  src: url('assets/fonts/Mark Pro Book.otf') format('opentype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

/* If you purchase the full Mark Pro family, add these: */
/*
@font-face {
  font-family: 'Mark Pro';
  src: url('assets/fonts/Mark Pro Light.otf') format('opentype');
  font-weight: 300;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Mark Pro';
  src: url('assets/fonts/Mark Pro Medium.otf') format('opentype');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Mark Pro';
  src: url('assets/fonts/Mark Pro Bold.otf') format('opentype');
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
*/

/* ==========================================
   VARIABLES
   ========================================== */
:root {
  /* ISST brand colours */
  --isst-blue: #36a9e1;
  --isst-red: #e30613;
  --isst-green: #3aaa35;
  --isst-yellow: #ffed00;

  /* ISST pastels */
  --pastel-blue: #cbecfd;
  --pastel-pink: #f8d2d5;
  --pastel-green: #c0f1bc;
  --pastel-yellow: #f1ea99;

  /* RTU teal */
  --rtu-teal: #005551;

  /* Cambridge */
  --cambridge-teal: #00b0b9;

  /* Neutrals */
  --black: #1a1a1a;
  --dark: #222;
  --slate: #555;
  --grey: #888;
  --light: #f5f6f7;
  --white: #fff;

  /* Typography */
  --font-primary: 'Mark Pro', 'Plus Jakarta Sans', system-ui, -apple-system, sans-serif;
  --font-mono: 'IBM Plex Mono', 'SF Mono', monospace;

  /* Spacing */
  --section-pad: 100px;
  --container-max: 1140px;
  --gap: 24px;
}

/* ==========================================
   RESET & BASE
   ========================================== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-primary);
  font-weight: 400;
  color: var(--black);
  line-height: 1.65;
  background: var(--white);
  overflow-x: hidden;
}

img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

/* ==========================================
   COLOUR BAR
   ========================================== */
.colour-bar {
  height: 5px;
  background: linear-gradient(
    90deg,
    var(--isst-blue) 25%,
    var(--isst-red) 25%,
    var(--isst-red) 50%,
    var(--isst-green) 50%,
    var(--isst-green) 75%,
    var(--isst-yellow) 75%
  );
  flex-shrink: 0;
}

/* ==========================================
   TYPOGRAPHY
   ========================================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.5px;
}

h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.4rem); margin-bottom: 16px; }
h3 { font-size: clamp(1.1rem, 2vw, 1.4rem); margin-bottom: 12px; }

.label {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--isst-blue);
  display: block;
  margin-bottom: 8px;
}

.label--light { color: rgba(255,255,255,.4); }

.accent { color: var(--isst-yellow); }
.accent-blue { color: var(--isst-blue); }

/* ==========================================
   BUTTONS
   ========================================== */
.btn {
  display: inline-block;
  padding: 14px 32px;
  font-family: var(--font-primary);
  font-size: 12px;
  font-weight: 400;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border-radius: 4px;
  border: none;
  cursor: pointer;
  transition: transform .2s, box-shadow .2s;
}

.btn:hover { transform: translateY(-1px); box-shadow: 0 4px 20px rgba(0,0,0,.15); }

.btn--primary { background: var(--isst-blue); color: var(--white); }
.btn--outline { background: transparent; border: 1px solid rgba(255,255,255,.25); color: var(--white); }
.btn--dark { background: var(--black); color: var(--white); }

/* ==========================================
   HEADER
   ========================================== */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  transition: background .3s, box-shadow .3s;
}

.site-header .colour-bar { position: relative; z-index: 1001; }

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  max-width: var(--container-max);
  margin: 0 auto;
  background: rgba(26,26,26,.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.site-header.scrolled .header-inner {
  box-shadow: 0 2px 20px rgba(0,0,0,.3);
}

.site-logo {
  font-size: 18px;
  letter-spacing: 3px;
  color: var(--white);
}

.site-logo .infinity { opacity: .5; }

.main-nav { display: flex; gap: 28px; align-items: center; }

.main-nav a {
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: rgba(255,255,255,.55);
  transition: color .2s;
  position: relative;
}

.main-nav a:hover,
.main-nav a.active { color: var(--white); }

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--isst-blue);
  transition: width .2s;
}

.main-nav a:hover::after { width: 100%; }

.nav-cta {
  background: var(--isst-blue) !important;
  color: var(--white) !important;
  padding: 8px 18px;
  border-radius: 3px;
  font-size: 11px !important;
  letter-spacing: 1.2px;
}

.nav-cta::after { display: none !important; }

.mobile-toggle {
  display: none;
  background: none; border: none;
  width: 28px; height: 20px;
  position: relative; cursor: pointer;
}

.mobile-toggle span {
  display: block; width: 100%; height: 2px;
  background: white; position: absolute; left: 0;
  transition: .3s;
}

.mobile-toggle span:nth-child(1) { top: 0; }
.mobile-toggle span:nth-child(2) { top: 9px; }
.mobile-toggle span:nth-child(3) { top: 18px; }

/* ==========================================
   HERO
   ========================================== */
.hero {
  min-height: 100vh;
  background: var(--black);
  color: var(--white);
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: 80px;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px; right: -200px;
  width: 800px; height: 800px;
  border: 1px solid rgba(255,255,255,.03);
  border-radius: 50%;
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -300px; left: -100px;
  width: 600px; height: 600px;
  border: 1px solid rgba(255,255,255,.02);
  border-radius: 50%;
  pointer-events: none;
}

.hero .container { position: relative; z-index: 1; }

.hero-content { max-width: 680px; }

.hero h1 {
  margin-bottom: 20px;
  letter-spacing: -1px;
}

.hero-sub {
  font-size: 17px;
  opacity: .55;
  line-height: 1.7;
  max-width: 540px;
  margin-bottom: 36px;
}

.hero-actions { display: flex; gap: 16px; align-items: center; flex-wrap: wrap; }

.hero-motto {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  opacity: .2;
  margin-top: 60px;
}

/* ==========================================
   VALUE PROPOSITION
   ========================================== */
.value-prop {
  padding: var(--section-pad) 0;
  background: var(--white);
}

.value-prop-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.value-prop h2 { letter-spacing: -0.3px; }

.value-prop-text {
  font-size: 15px;
  color: var(--slate);
  line-height: 1.75;
  margin-bottom: 20px;
}

.cambridge-desc {
  font-size: 12px;
  color: var(--grey);
  font-style: italic;
  border-left: 3px solid var(--cambridge-teal);
  padding-left: 16px;
  margin-top: 20px;
}

.value-image {
  border-radius: 8px;
  overflow: hidden;
  background: var(--light);
  aspect-ratio: 4/3;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--grey);
  font-size: 13px;
}

/* ==========================================
   PILLARS (Exploring / Creating / Together)
   ========================================== */
.pillars {
  padding: var(--section-pad) 0;
  background: var(--light);
}

.pillars-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
  margin-top: 40px;
}

.pillar-card {
  padding: 36px 28px;
  border-radius: 8px;
  transition: transform .3s;
}

.pillar-card:hover { transform: translateY(-4px); }

.pillar-card--blue { background: var(--pastel-blue); }
.pillar-card--green { background: var(--pastel-green); }
.pillar-card--yellow { background: var(--pastel-yellow); }

.pillar-word {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 3px;
  margin-bottom: 16px;
}

.pillar-card--blue .pillar-word { color: var(--isst-blue); }
.pillar-card--green .pillar-word { color: var(--isst-green); }
.pillar-card--yellow .pillar-word { color: #a89000; }

.pillar-card h3 { font-size: 18px; margin-bottom: 10px; }

.pillar-card p {
  font-size: 14px;
  color: var(--slate);
  line-height: 1.65;
}

/* ==========================================
   FACULTY
   ========================================== */
.faculty {
  padding: var(--section-pad) 0;
  background: var(--black);
  color: var(--white);
}

.faculty-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 40px;
}

.faculty-card {
  background: rgba(255,255,255,.04);
  border-radius: 8px;
  padding: 28px 22px;
  border: 1px solid rgba(255,255,255,.06);
  transition: border-color .3s, transform .3s;
}

.faculty-card:hover {
  border-color: var(--isst-blue);
  transform: translateY(-3px);
}

.faculty-photo {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: rgba(255,255,255,.08);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--isst-blue);
}

.faculty-name {
  font-size: 15px;
  margin-bottom: 2px;
}

.faculty-subject {
  font-family: var(--font-mono);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--isst-blue);
  margin-bottom: 10px;
}

.faculty-cred {
  font-size: 12.5px;
  color: rgba(255,255,255,.45);
  line-height: 1.6;
}

.faculty-cred strong {
  color: var(--isst-yellow);
  font-weight: 400;
}

/* ==========================================
   STATS BAR
   ========================================== */
.stats-bar {
  padding: 60px 0;
  background: var(--dark);
  color: var(--white);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--gap);
  text-align: center;
}

.stat-num {
  font-size: 48px;
  letter-spacing: -2px;
  line-height: 1;
  margin-bottom: 6px;
}

.stat-num.c-blue { color: var(--isst-blue); }
.stat-num.c-red { color: var(--isst-red); }
.stat-num.c-green { color: var(--isst-green); }
.stat-num.c-yellow { color: var(--isst-yellow); }

.stat-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1px;
  opacity: .4;
}

/* ==========================================
   PROGRAMME
   ========================================== */
.programme {
  padding: var(--section-pad) 0;
  background: var(--white);
}

.programme-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--gap);
  margin-top: 40px;
}

.programme-card {
  padding: 32px;
  border: 1px solid #e8eaed;
  border-radius: 8px;
  transition: box-shadow .3s;
}

.programme-card:hover { box-shadow: 0 8px 30px rgba(0,0,0,.06); }

.programme-icon {
  width: 40px; height: 40px;
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-size: 14px;
  margin-bottom: 16px;
  color: var(--white);
}

.programme-card h3 { font-size: 16px; }
.programme-card p { font-size: 13px; color: var(--slate); line-height: 1.65; }

/* ==========================================
   OPEN DAY CTA
   ========================================== */
.open-day {
  padding: var(--section-pad) 0;
  background: var(--black);
  color: var(--white);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.open-day::before {
  content: 'OPEN DAY';
  position: absolute;
  font-size: 200px;
  letter-spacing: 20px;
  color: rgba(255,255,255,.015);
  top: 50%; left: 50%;
  transform: translate(-50%,-50%);
  white-space: nowrap;
  pointer-events: none;
}

.od-pill {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 2px;
  text-transform: uppercase;
  background: var(--isst-blue);
  color: var(--white);
  padding: 6px 20px;
  border-radius: 20px;
  margin-bottom: 24px;
}

.open-day h2 { margin-bottom: 16px; }

.open-day p {
  font-size: 15px;
  opacity: .5;
  max-width: 500px;
  margin: 0 auto 32px;
  line-height: 1.65;
}

.od-details {
  display: flex;
  justify-content: center;
  gap: 48px;
  margin-bottom: 36px;
}

.od-detail-label {
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 1px;
  opacity: .35;
  margin-bottom: 4px;
}

.od-detail-value { font-size: 15px; }

/* ==========================================
   FOOTER
   ========================================== */
.site-footer {
  background: var(--black);
  color: var(--white);
  border-top: 1px solid rgba(255,255,255,.06);
}

.footer-main {
  padding: 60px 0 40px;
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 40px;
}

.footer-brand .footer-logo {
  font-size: 18px;
  letter-spacing: 3px;
  margin-bottom: 8px;
}

.footer-brand .footer-full-name {
  font-size: 12px;
  opacity: .35;
  margin-bottom: 16px;
  line-height: 1.5;
}

.footer-motto {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 3px;
  text-transform: uppercase;
  opacity: .2;
}

.footer-col h4 {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  opacity: .3;
  margin-bottom: 16px;
}

.footer-col a {
  display: block;
  font-size: 13px;
  opacity: .5;
  margin-bottom: 8px;
  transition: opacity .2s;
}

.footer-col a:hover { opacity: 1; }

.footer-bottom {
  padding: 20px 0;
  border-top: 1px solid rgba(255,255,255,.06);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-cambridge {
  font-size: 11px;
  opacity: .3;
}

.footer-copy {
  font-size: 11px;
  opacity: .2;
}

/* Cambridge logo area in footer — plain background, secondary position */
.cambridge-footer-logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,.95);
  padding: 8px 14px;
  border-radius: 4px;
}

.cambridge-footer-logo img {
  height: 32px;
  width: auto;
}

/* ==========================================
   ANIMATIONS
   ========================================== */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .6s ease, transform .6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.stagger > * { transition-delay: calc(var(--i, 0) * 0.1s); }

/* ==========================================
   RESPONSIVE
   ========================================== */
@media (max-width: 1024px) {
  .faculty-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-main { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  :root { --section-pad: 60px; }

  .main-nav { display: none; }
  .mobile-toggle { display: block; }

  .main-nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%; left: 0; right: 0;
    background: var(--black);
    padding: 20px 24px;
    gap: 16px;
    border-top: 1px solid rgba(255,255,255,.06);
  }

  .value-prop-inner { grid-template-columns: 1fr; }
  .pillars-grid { grid-template-columns: 1fr; }
  .programme-grid { grid-template-columns: 1fr; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 30px; }
  .faculty-grid { grid-template-columns: 1fr; }
  .od-details { flex-direction: column; gap: 20px; }
  .footer-main { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; gap: 12px; text-align: center; }
}

/* ==========================================
   WORDPRESS SPECIFIC
   ========================================== */
.wp-block-image img { border-radius: 8px; }
.entry-content { max-width: 720px; margin: 0 auto; padding: var(--section-pad) 24px; }
.entry-content p { margin-bottom: 1.5em; color: var(--slate); }
.entry-content h2 { margin-top: 2em; }

/* Admin bar fix */
body.admin-bar .site-header { top: 32px; }
@media (max-width: 782px) {
  body.admin-bar .site-header { top: 46px; }
}