/* =========================================================
   ECS — EXPO CAMPUS SMANLI
   base.css — design tokens, reset, typography, shared utilities
   Redesigned with Pertamina Foundation-inspired aesthetics
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@300;400;600;700;800&family=Caveat:wght@400;700&display=swap');

:root{
  /* ---- Brand colors, Pertamina Foundation inspired ---- */
  --pf-red:       #ED1C24;
  --pf-red-dark:  #C41820;
  --pf-blue:      #003B95;
  --pf-blue-dark: #002D73;
  --pf-green:     #479188;
  --black:        #000000;
  --gray-900:     #111827;
  --gray-800:     #1F2937;
  --gray-700:     #374151;
  --gray-600:     #4B5563;
  --gray-500:     #6B7280;
  --gray-400:     #9CA3AF;
  --gray-300:     #D1D5DB;
  --gray-200:     #E5E7EB;
  --gray-100:     #F3F4F6;
  --gray-50:      #F9FAFB;
  --white:        #FFFFFF;

  /* Legacy aliases for JS files that may reference old vars */
  --navy:        var(--pf-blue);
  --navy-deep:   var(--gray-900);
  --navy-ink:    var(--gray-800);
  --gold:        var(--pf-red);
  --gold-dark:   var(--pf-red-dark);
  --mist:        var(--gray-50);
  --tint:        var(--gray-200);
  --tint-dark:   var(--gray-300);

  /* ---- Type ---- */
  --font-display: 'Open Sans', sans-serif;
  --font-body:    'Open Sans', sans-serif;
  --font-accent:  'Caveat', cursive;
  --font-mono:    'Open Sans', sans-serif;

  /* ---- Layout ---- */
  --container: 1200px;
  --radius-sm: 12px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  --nav-h: 76px;

  /* ---- Motion ---- */
  --ease: cubic-bezier(.4,0,.2,1);
}

*, *::before, *::after{ box-sizing: border-box; }

html{ scroll-behavior: smooth; scroll-padding-top: var(--nav-h); }

body{
  margin: 0;
  font-family: var(--font-body);
  color: var(--gray-700);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
  line-height: 1.6;
}

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

a{ color: inherit; text-decoration: none; }

ul{ list-style: none; margin: 0; padding: 0; }

button{ font-family: inherit; cursor: pointer; }

h1,h2,h3,h4{
  font-family: var(--font-display);
  color: var(--gray-900);
  margin: 0;
  line-height: 1.15;
  font-weight: 700;
}

p{ margin: 0; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *, *::before, *::after{ animation-duration: 0.001ms !important; animation-iteration-count: 1 !important; transition-duration: 0.001ms !important; }
}

/* ---------- Layout helpers ---------- */
.container{
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: 24px;
}

.section{ position: relative; padding-block: 80px; }
.section--tight{ padding-block: 56px; }
.section--mist{ background: var(--gray-50); }
.section--navy{ background: var(--gray-900); color: var(--gray-400); }
.section--navy h2, .section--navy h3{ color: var(--white); }

.eyebrow{
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--pf-red);
  margin-bottom: 14px;
}
.section--navy .eyebrow{ color: var(--pf-red); }
.eyebrow::before{
  content: "";
  width: 32px; height: 3px;
  background: var(--pf-red);
  flex-shrink: 0;
}

.section-head{ max-width: 640px; margin-bottom: 48px; }
.section-head h2{ font-size: clamp(28px, 4vw, 48px); font-weight: 700; }
.section-head p{ margin-top: 14px; font-size: 17px; color: var(--gray-500); }
.section--navy .section-head p{ color: var(--gray-400); }

/* ---------- Buttons — pill shape like Pertamina Foundation ---------- */
.btn{
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 14px 32px;
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 14px;
  border: 2px solid transparent;
  border-radius: var(--radius-full);
  transition: all .3s var(--ease);
  white-space: nowrap;
  text-transform: none;
  letter-spacing: 0.02em;
}
.btn-primary{ background: var(--pf-red); color: var(--white); border-color: var(--pf-red); }
.btn-primary:hover{ background: var(--pf-red-dark); border-color: var(--pf-red-dark); transform: translateY(-2px); box-shadow: 0 8px 25px -8px rgba(237,28,36,.4); }
.btn-outline{ background: transparent; color: var(--white); border: 2px solid rgba(255,255,255,.6); }
.btn-outline:hover{ background: var(--white); color: var(--pf-blue); border-color: var(--white); transform: translateY(-2px); }
.btn-navy{ background: var(--pf-blue); color: var(--white); border-color: var(--pf-blue); }
.btn-navy:hover{ background: var(--pf-blue-dark); border-color: var(--pf-blue-dark); transform: translateY(-2px); }
.btn-sm{ padding: 10px 24px; font-size: 13px; }

/* ---------- Arrow icon in buttons (Pertamina style) ---------- */
.btn svg.btn-arrow{
  width: 16px; height: 16px;
  transition: transform .3s var(--ease);
}
.btn:hover svg.btn-arrow{
  transform: translateX(4px);
}

/* ---------- Photo frame ---------- */
.photo-frame{
  position: relative;
  overflow: hidden;
  background: var(--gray-100);
  width: 100%; height: 100%;
}
.photo-frame img{ width: 100%; height: 100%; object-fit: cover; }
.photo-frame.is-empty img{ display: none; }
.photo-frame.is-empty{
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 14px;
  background:
    repeating-linear-gradient(135deg, var(--gray-100), var(--gray-100) 10px, var(--gray-50) 10px, var(--gray-50) 20px);
  border: 1.5px dashed var(--gray-300);
}
.photo-frame.is-empty::after{
  content: attr(data-label);
  font-family: var(--font-body);
  font-size: 11.5px;
  font-weight: 600;
  letter-spacing: .02em;
  color: var(--gray-500);
  line-height: 1.5;
}

/* ---------- Scroll reveal ---------- */
.reveal{ opacity: 0; transform: translateY(28px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.reveal.is-visible{ opacity: 1; transform: translateY(0); }

/* ---------- Misc ---------- */
.visually-hidden{
  position: absolute; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); white-space: nowrap; border: 0; padding: 0; margin: -1px;
}

:focus-visible{ outline: 3px solid var(--pf-red); outline-offset: 3px; }

::selection{ background: var(--pf-red); color: var(--white); }