/* ==========================================================================
   KIS STUDENTS — STYLESHEET
   Organized in sections:
   1. Fonts & Variables (design tokens)
   2. Reset & Base
   3. Type scale
   4. Layout helpers
   5. Header / Navigation
   6. Buttons & Tags
   7. Hero
   8. Cards (events / news / clubs)
   9. Section chrome (eyebrow-free headers, dividers)
   10. Filters
   11. Modal (event & club detail)
   12. News article view
   13. About page
   14. Footer
   15. Animations
   16. Responsive
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Newsreader:ital,opsz,wght@0,6..72,400;0,6..72,500;0,6..72,600;1,6..72,400&family=Inter:wght@400;500;600;700&display=swap');

/* ---------- 1. Variables ---------- */
:root{
  /* Colors — KIS-inspired: deep navy + warm brass accent, on a paper-white ground */
  --navy-900: #0f1c30;
  --navy-800: #14233d;
  --navy-700: #1c2f4f;
  --navy-600: #2b4468;
  --slate-600: #52607a;
  --slate-500: #6b7690;
  --slate-300: #c3c9d6;
  --hairline: #dfe2ea;
  --paper: #ffffff;
  --paper-dim: #f6f7fa;
  --brass: #b9862f;
  --brass-dark: #97691f;
  --brass-tint: #f4ead7;
  --success: #2f6b4f;

  --text-primary: var(--navy-900);
  --text-secondary: var(--slate-600);
  --text-muted: var(--slate-500);

  /* Type */
  --font-display: 'Newsreader', Georgia, 'Times New Roman', serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing scale */
  --space-1: 0.5rem;
  --space-2: 0.75rem;
  --space-3: 1rem;
  --space-4: 1.5rem;
  --space-5: 2rem;
  --space-6: 3rem;
  --space-7: 4.5rem;
  --space-8: 6.5rem;

  /* Layout */
  --container: 1240px;
  --container-narrow: 760px;
  --radius-sm: 3px;
  --radius-md: 5px;
  --nav-height: 76px;

  --ease: cubic-bezier(0.4, 0, 0.2, 1);

  /* Theme-aware tokens (overridden in dark mode below) */
  --header-bg: rgba(255,255,255,0.92);
  --btn-bg: #0f1c30;
  --btn-fg: #ffffff;
  --btn-hover-bg: #97691f;
  --btn-hover-fg: #ffffff;
  --hero-media-bg: #14233d;
  color-scheme: light;
}

/* ---------- Dark mode ----------
   Applied when <html data-theme="dark"> is set (see the toggle in js/main.js).
   Only colour tokens change — layout and typography stay identical. */
:root[data-theme="dark"]{
  --navy-900: #eef1f7;
  --navy-800: #d5dbe8;
  --navy-700: #b6c0d4;
  --navy-600: #8f9bb3;
  --slate-600: #aab3c5;
  --slate-500: #8c96ab;
  --slate-300: #3a4560;
  --hairline: #27324a;
  --paper: #0e1626;
  --paper-dim: #131d31;
  --brass: #d1a04a;
  --brass-dark: #e0b25c;
  --brass-tint: rgba(209,160,74,0.16);
  --header-bg: rgba(14,22,38,0.88);
  --btn-bg: #eef1f7;
  --btn-fg: #0e1626;
  --btn-hover-bg: #e0b25c;
  --btn-hover-fg: #0e1626;
  --hero-media-bg: #131d31;
  color-scheme: dark;
}
:root[data-theme="dark"] img{ filter: brightness(0.92); }

/* ---------- 2. Reset & base ---------- */
*, *::before, *::after{ box-sizing: border-box; }
html{ scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-height) + 12px); }
body{
  margin: 0;
  font-family: var(--font-body);
  color: var(--text-primary);
  background: var(--paper);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
img{ max-width: 100%; display: block; }
a{ color: inherit; text-decoration: none; }
button{ font-family: inherit; cursor: pointer; }
ul{ margin: 0; padding: 0; list-style: none; }
h1,h2,h3,h4,p{ margin: 0; }

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior: auto; }
  *{ animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

:focus-visible{
  outline: 2px solid var(--brass);
  outline-offset: 3px;
}

/* ---------- 3. Type scale ---------- */
.h1{ font-family: var(--font-display); font-weight: 500; font-size: clamp(2.6rem, 5vw, 4.4rem); line-height: 1.05; letter-spacing: -0.01em; color: var(--navy-900); }
.h2{ font-family: var(--font-display); font-weight: 500; font-size: clamp(1.9rem, 3.4vw, 2.7rem); line-height: 1.15; letter-spacing: -0.01em; color: var(--navy-900); }
.h3{ font-family: var(--font-display); font-weight: 500; font-size: clamp(1.35rem, 2vw, 1.65rem); line-height: 1.25; color: var(--navy-900); }
.lede{ font-size: 1.2rem; line-height: 1.65; color: var(--text-secondary); max-width: 52ch; }
.body-text{ font-size: 1.02rem; color: var(--text-secondary); }
.small{ font-size: 0.88rem; color: var(--text-muted); }

/* ---------- 4. Layout helpers ---------- */
.container{ width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 var(--space-5); }
.container-narrow{ width: 100%; max-width: var(--container-narrow); margin: 0 auto; padding: 0 var(--space-5); }
.section{ padding: var(--space-8) 0; }
.section--tight{ padding: var(--space-6) 0; }
.section--dim{ background: var(--paper-dim); }
.hr{ border: none; border-top: 1px solid var(--hairline); margin: 0; }
.section-head{
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}
.section-head .h2{ margin: 0; }
.section-head__link{
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--navy-800);
  white-space: nowrap;
  padding-bottom: 4px;
  border-bottom: 1px solid var(--navy-800);
  transition: color 0.2s var(--ease), border-color 0.2s var(--ease);
}
.section-head__link:hover{ color: var(--brass-dark); border-color: var(--brass-dark); }

.grid{ display: grid; gap: var(--space-5); }
.grid--3{ grid-template-columns: repeat(3, 1fr); }
.grid--4{ grid-template-columns: repeat(4, 1fr); }

/* ---------- 5. Header / Navigation ---------- */
.site-header{
  position: sticky;
  top: 0;
  z-index: 500;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: var(--header-bg);
  backdrop-filter: saturate(180%) blur(10px);
  border-bottom: 1px solid var(--hairline);
}
.site-header .container{ display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); }

.brand{ display: flex; align-items: baseline; gap: 0.5rem; }
.brand__mark{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.35rem;
  color: var(--navy-900);
  letter-spacing: -0.01em;
}
.brand__mark em{ font-style: normal; color: var(--brass-dark); }
.brand__tag{ font-size: 0.72rem; color: var(--text-muted); letter-spacing: 0.02em; display: none; }

.nav-primary{ display: flex; align-items: center; gap: var(--space-5); }
.nav-links{ display: flex; align-items: center; gap: var(--space-5); }
.nav-links a{
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-secondary);
  position: relative;
  padding: 6px 0;
  transition: color 0.2s var(--ease);
}
.nav-links a:hover{ color: var(--navy-900); }
.nav-links a::after{
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 2px;
  background: var(--brass);
  transition: right 0.25s var(--ease);
}
.nav-links a:hover::after,
.nav-links a[aria-current="page"]::after{ right: 0; }
.nav-links a[aria-current="page"]{ color: var(--navy-900); }

.btn{
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.92rem;
  font-weight: 600;
  padding: 0.75rem 1.4rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  transition: background 0.2s var(--ease), border-color 0.2s var(--ease), color 0.2s var(--ease), transform 0.15s var(--ease);
  white-space: nowrap;
}
.btn:active{ transform: translateY(1px); }
.btn--primary{ background: var(--btn-bg); color: var(--btn-fg); }
.btn--primary:hover{ background: var(--btn-hover-bg); color: var(--btn-hover-fg); }
.btn--ghost{ background: transparent; color: var(--navy-900); border-color: var(--navy-900); }
.btn--ghost:hover{ background: var(--btn-bg); color: var(--btn-fg); }
.btn--sm{ padding: 0.55rem 1.1rem; font-size: 0.85rem; }
.btn--block{ width: 100%; }

.theme-toggle{
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  flex: none;
  background: transparent;
  color: var(--navy-900);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  transition: border-color 0.2s var(--ease);
}
.theme-toggle:hover{ border-color: var(--navy-900); }
.theme-toggle svg{ width: 18px; height: 18px; }
.theme-toggle .icon-sun{ display: none; }
:root[data-theme="dark"] .theme-toggle .icon-moon{ display: none; }
:root[data-theme="dark"] .theme-toggle .icon-sun{ display: block; }

/* ---------- 7. Hero ---------- */
.hero{
  padding: var(--space-8) 0 var(--space-7);
  position: relative;
}
.hero .container{
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: var(--space-6);
  align-items: center;
}
.hero__eyebrow{
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--brass-dark);
  margin-bottom: var(--space-3);
}
.hero__title{ margin-bottom: var(--space-4); }
.hero__title .line2{ display: block; font-style: italic; color: var(--slate-600); font-size: 0.5em; margin-top: 0.3em; }
.hero__actions{ display: flex; gap: var(--space-3); margin-top: var(--space-5); flex-wrap: wrap; }

.hero__media{
  position: relative;
  aspect-ratio: 4/5;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--hero-media-bg);
}
.hero__media img{ width: 100%; height: 100%; object-fit: cover; opacity: 0.92; }
.hero__media-caption{
  position: absolute;
  left: var(--space-3); bottom: var(--space-3); right: var(--space-3);
  background: rgba(15,28,48,0.82);
  color: #fff;
  padding: var(--space-3);
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
}

/* Page header for interior pages (events/clubs/news/about) */
.page-header{
  padding: var(--space-7) 0 var(--space-6);
  border-bottom: 1px solid var(--hairline);
}
.page-header__kicker{ font-size: 0.85rem; font-weight: 600; color: var(--brass-dark); margin-bottom: var(--space-2); }
.page-header .lede{ margin-top: var(--space-3); }

/* ---------- 8. Cards ---------- */
.card{
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  background: var(--paper);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: border-color 0.25s var(--ease), transform 0.25s var(--ease);
}
.card:hover{ border-color: var(--slate-300); transform: translateY(-3px); }
.card__media{ aspect-ratio: 16/10; overflow: hidden; background: var(--paper-dim); }
.card__media img{ width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s var(--ease); }
.card:hover .card__media img{ transform: scale(1.045); }
.card__body{ padding: var(--space-4); display: flex; flex-direction: column; gap: var(--space-2); flex: 1; }
.card__meta{ display: flex; align-items: center; gap: var(--space-2); font-size: 0.8rem; color: var(--text-muted); }
.card__tag{
  display: inline-block;
  align-self: flex-start;
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--brass-dark);
  background: var(--brass-tint);
  padding: 0.25rem 0.6rem;
  border-radius: 999px;
}
.card__title{ font-family: var(--font-display); font-size: 1.25rem; font-weight: 500; color: var(--navy-900); line-height: 1.3; }
.card__desc{ font-size: 0.92rem; color: var(--text-secondary); flex: 1; }
.card__foot{ display: flex; align-items: center; justify-content: space-between; margin-top: var(--space-2); }
.card__link{ font-size: 0.88rem; font-weight: 600; color: var(--navy-900); border-bottom: 1px solid var(--navy-900); padding-bottom: 2px; }
.card__link:hover{ color: var(--brass-dark); border-color: var(--brass-dark); }

/* Event card variant — date block on the side */
.event-card{ display: flex; gap: var(--space-4); border: 1px solid var(--hairline); border-radius: var(--radius-md); padding: var(--space-4); transition: border-color 0.25s var(--ease), transform 0.25s var(--ease); background: var(--paper); }
.event-card:hover{ border-color: var(--slate-300); transform: translateY(-2px); }
.event-card__date{
  flex: 0 0 72px;
  text-align: center;
  border-right: 1px solid var(--hairline);
  padding-right: var(--space-4);
}
.event-card__day{ font-family: var(--font-display); font-size: 1.9rem; color: var(--navy-900); line-height: 1; }
.event-card__month{ font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--text-muted); margin-top: 4px; }
.event-card__body{ flex: 1; display: flex; flex-direction: column; gap: 0.4rem; }
.event-card__title{ font-family: var(--font-display); font-size: 1.15rem; color: var(--navy-900); }
.event-card__facts{ display: flex; flex-wrap: wrap; gap: 0.9rem; font-size: 0.85rem; color: var(--text-muted); }
.event-card__facts span{ display: inline-flex; align-items: center; gap: 5px; }
.event-card__desc{ font-size: 0.92rem; color: var(--text-secondary); }
.event-card__foot{ margin-top: 0.5rem; }

/* Club card */
.club-card .card__body{ gap: var(--space-1); }
.club-card__facts{ display: flex; flex-direction: column; gap: 3px; font-size: 0.85rem; color: var(--text-muted); margin: 2px 0 4px; }

/* Next Event feature block — large image + details, used on Home and Next Event page */
.event-feature{
  border: 1px solid var(--hairline);
  border-radius: var(--radius-md);
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr 1fr;
  background: var(--paper);
}
.event-feature__media{ aspect-ratio: 4/3; overflow: hidden; background: var(--paper-dim); }
.event-feature__media img{ width: 100%; height: 100%; object-fit: cover; }
.event-feature__body{ padding: var(--space-6); display: flex; flex-direction: column; justify-content: center; gap: var(--space-2); }
.event-feature__facts{ display: flex; flex-wrap: wrap; gap: var(--space-1) var(--space-4); font-size: 0.92rem; color: var(--text-secondary); margin: var(--space-1) 0 var(--space-2); }
.event-feature__facts span{ display: inline-flex; align-items: center; gap: 6px; }
.event-feature__desc{ font-size: 1rem; color: var(--text-secondary); }
.event-feature__actions{ display: flex; gap: var(--space-3); flex-wrap: wrap; margin-top: var(--space-3); }
.event-feature--compact .event-feature__body{ padding: var(--space-5); }

/* Callout / contact note */
.callout{
  border: 1px solid var(--hairline);
  border-left: 3px solid var(--brass);
  border-radius: var(--radius-sm);
  padding: var(--space-4) var(--space-5);
  background: var(--paper-dim);
  display: flex; align-items: center; justify-content: space-between; gap: var(--space-4); flex-wrap: wrap;
}
.callout p{ font-size: 0.98rem; color: var(--text-secondary); }
.callout strong{ color: var(--navy-900); }
.callout a{ color: var(--brass-dark); font-weight: 600; border-bottom: 1px solid var(--brass-dark); }
.callout a:hover{ color: var(--navy-900); border-color: var(--navy-900); }

.empty-state{ padding: var(--space-6) 0; text-align: center; color: var(--text-muted); font-size: 0.98rem; }

/* ---------- 12. News article view ---------- */
#news-article-view{ display: none; }
#news-article-view.is-active{ display: block; }
#news-list-view.is-hidden{ display: none; }

.article-back{ display: inline-flex; align-items: center; gap: 6px; font-size: 0.9rem; font-weight: 600; color: var(--text-secondary); margin-bottom: var(--space-5); }
.article-back:hover{ color: var(--navy-900); }
.article-header{ max-width: var(--container-narrow); margin: 0 auto var(--space-5); text-align: left; }
.article-meta{ display: flex; align-items: center; gap: var(--space-3); font-size: 0.85rem; color: var(--text-muted); margin-bottom: var(--space-3); }
.article-banner{ width: 100%; aspect-ratio: 21/9; border-radius: var(--radius-md); overflow: hidden; margin-bottom: var(--space-6); background: var(--paper-dim); }
.article-banner img{ width: 100%; height: 100%; object-fit: cover; }
.article-body{ max-width: var(--container-narrow); margin: 0 auto; }
.article-body p{ font-size: 1.06rem; color: var(--text-secondary); margin-bottom: var(--space-4); line-height: 1.75; }
.article-body figure{ margin: var(--space-6) 0; }
.article-body figure img{ border-radius: var(--radius-md); width: 100%; }
.article-body figcaption{ font-size: 0.85rem; color: var(--text-muted); margin-top: var(--space-2); }
.article-doc-link{ display: inline-flex; align-items: center; gap: 8px; font-size: 0.92rem; font-weight: 600; color: var(--navy-900); border: 1px solid var(--hairline); padding: 0.7rem 1.1rem; border-radius: var(--radius-sm); margin: var(--space-2) 0 var(--space-4); }
.article-doc-link:hover{ border-color: var(--navy-900); }

/* ---------- 14. Footer ---------- */
.site-footer{
  border-top: 1px solid var(--hairline);
  padding: var(--space-5) 0;
  margin-top: var(--space-8);
  text-align: center;
}
.site-footer p{ font-size: 0.88rem; color: var(--text-muted); }

/* ---------- 15. Animations ---------- */
.reveal{ opacity: 0; transform: translateY(18px); transition: opacity 0.6s var(--ease), transform 0.6s var(--ease); }
.reveal.is-visible{ opacity: 1; transform: translateY(0); }

/* ---------- 16. Responsive ---------- */
@media (min-width: 1000px){
  .brand__tag{ display: block; }
}

@media (max-width: 999px){
  .grid--4{ grid-template-columns: repeat(2, 1fr); }
  .hero .container{ grid-template-columns: 1fr; }
  .hero__media{ order: -1; aspect-ratio: 16/10; }
  .event-feature{ grid-template-columns: 1fr; }
  .event-feature__media{ aspect-ratio: 16/10; }
}

@media (max-width: 720px){
  .container, .container-narrow{ padding: 0 var(--space-4); }
  .grid--3, .grid--4{ grid-template-columns: 1fr; }
  .section{ padding: var(--space-6) 0; }
  .section-head{ flex-direction: column; align-items: flex-start; gap: var(--space-2); }
  .event-card{ flex-direction: column; }
  .event-card__date{ flex-direction: row; align-items: baseline; gap: 8px; border-right: none; border-bottom: 1px solid var(--hairline); padding: 0 0 0.6rem; text-align: left; }
  .callout{ flex-direction: column; align-items: flex-start; }
  .article-banner{ aspect-ratio: 4/3; }
  .event-feature__body{ padding: var(--space-4); }
}

/* Small phones: keep brand, 3 nav links and theme toggle on one row */
@media (max-width: 480px){
  .site-header .container{ padding: 0 var(--space-3); gap: var(--space-2); }
  .brand__mark{ font-size: 1.1rem; }
  .nav-primary{ gap: var(--space-2); }
  .nav-links{ gap: 0.85rem; }
  .nav-links a{ font-size: 0.88rem; }
  .theme-toggle{ width: 34px; height: 34px; }
}
@media (max-width: 360px){
  .brand__mark{ font-size: 1rem; }
  .nav-links{ gap: 0.65rem; }
  .nav-links a{ font-size: 0.82rem; }
}