/* =====================================================================
   ESCP Economics Seminar Series — stylesheet
   Authentic ESCP identity:
     · Purple  #240085   · Magenta #e7006c   · White
     · Fonts: Montserrat (display) + Lato (body)
     · Each card shows its campus (Paris / Madrid / Berlin / London / Turin)
   Nav / hero / footer stay in immersive purple in BOTH themes so the
   white ESCP logo always reads.
   ===================================================================== */

:root {
  /* ---- Fixed ESCP brand tokens ---- */
  --purple:      #240085;   /* the ESCP purple */
  --purple-deep: #15004F;
  --magenta:     #e7006c;   /* the ESCP magenta/pink accent */
  --magenta-2:   #c30049;
  --accent-soft:   #E6A1C1; /* relaxed pastel rose — buttons & controls */
  --accent-soft-2: #D98AAE; /* hover */
  --accent-ink:    #3A1330; /* readable text on the pastel rose */
  --gold:        #eec343;
  --on-purple:        #ffffff;
  --on-purple-muted:  #c8c1ee;

  /* Immersive purple surface set (nav / hero / footer + dark theme) */
  --p-bg:        #1A0063;
  --p-bg2:       #240085;
  --p-surface:   #2C159A;
  --p-surface-2: #381FB0;
  --p-line:      rgba(255, 255, 255, .14);
  --p-line-2:    rgba(255, 255, 255, .24);

  /* Type */
  --font-display: "Montserrat", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --font-body:    "Lato", system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;

  /* Geometry */
  --radius:    14px;
  --radius-sm: 9px;
  --btn-radius: 6px;
  --maxw:      1180px;
  --shadow:    0 26px 60px -28px rgba(7, 0, 40, .7);
  --shadow-sm: 0 14px 32px -18px rgba(7, 0, 40, .55);

  /* ---- DARK theme (default) — neutral charcoal panels, purple/magenta accents ---- */
  --bg:        #0E0E11;   /* page */
  --bg-2:      #141417;   /* alt sections */
  --surface:   #1A1A1F;   /* cards / panels */
  --surface-2: #26262E;   /* inner surfaces */
  --line:      rgba(255, 255, 255, .09);
  --line-2:    rgba(255, 255, 255, .16);
  --text:      #F2F2F5;
  --muted:     #A6A6B1;
  --muted-2:   #74747F;
  --brand:      var(--accent-soft); /* accent fills */
  --brand-text: #E8A8C6;            /* accent text (soft) */
  --brand-glow: rgba(230, 161, 193, .28);
}

[data-theme="light"] {
  --bg:        #F6F5FB;
  --bg-2:      #EDEBF7;
  --surface:   #FFFFFF;
  --surface-2: #F4F2FC;
  --line:      rgba(36, 0, 133, .12);
  --line-2:    rgba(36, 0, 133, .20);
  --text:      #1A0850;
  --muted:     #5B5488;
  --muted-2:   #847CB0;
  --brand:      var(--accent-soft);
  --brand-text: #B0567E;            /* muted rose on white */
  --brand-glow: rgba(176, 86, 126, .18);
  --shadow:    0 24px 56px -30px rgba(26, 8, 80, .35);
  --shadow-sm: 0 14px 30px -20px rgba(26, 8, 80, .22);
}

/* Always-immersive purple regions — re-scope theme tokens so every
   descendant (buttons, pills, spotlight…) renders its on-purple variant. */
.nav, .hero, .footer {
  --bg: var(--p-bg); --bg-2: var(--p-bg2);
  --surface: var(--p-surface); --surface-2: var(--p-surface-2);
  --line: var(--p-line); --line-2: var(--p-line-2);
  --text: var(--on-purple); --muted: var(--on-purple-muted); --muted-2: #a79edd;
  --brand-text: #EEB3CF;
  color: var(--on-purple);
}

/* ------------------------------------------------------------------ */
/* Base                                                               */
/* ------------------------------------------------------------------ */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; scroll-padding-top: 88px; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--text);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

h1, h2, h3 { font-family: var(--font-display); line-height: 1.1; margin: 0; letter-spacing: -.01em; font-weight: 700; }
p { margin: 0 0 1rem; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }

.container { width: min(100% - 2.5rem, var(--maxw)); margin-inline: auto; }

.grad {
  background: linear-gradient(100deg, #FBC8DC, var(--accent-soft) 45%, #F0CE7A);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.kicker {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: .74rem;
  font-weight: 700;
  color: var(--brand-text);
  margin: 0 0 .55rem;
}

/* ------------------------------------------------------------------ */
/* Decorative background                                              */
/* ------------------------------------------------------------------ */
.bg { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; }
.bg__blob { position: absolute; border-radius: 50%; filter: blur(100px); animation: float 26s ease-in-out infinite; }
.bg__blob--1 { width: 46vw; height: 46vw; top: -14vw; left: -8vw;
  background: radial-gradient(circle at 30% 30%, var(--magenta), transparent 70%); opacity: .22; }
.bg__blob--2 { width: 42vw; height: 42vw; top: 32vh; right: -14vw;
  background: radial-gradient(circle at 70% 40%, #5a2bff, transparent 70%); opacity: .26; animation-delay: -9s; }
.bg__blob--3 { width: 38vw; height: 38vw; bottom: -16vw; left: 22vw;
  background: radial-gradient(circle at 50% 50%, var(--gold), transparent 70%); opacity: .08; animation-delay: -16s; }
[data-theme="light"] .bg__blob { opacity: .10; }

.bg__grid {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 66px 66px;
  mask-image: radial-gradient(ellipse 80% 55% at 50% 0%, #000 30%, transparent 75%);
}
[data-theme="light"] .bg__grid {
  background-image:
    linear-gradient(rgba(36,0,133,.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(36,0,133,.05) 1px, transparent 1px);
}

.bg__grain {
  position: absolute; inset: 0; opacity: .035; mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='120' height='120'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

@keyframes float {
  0%, 100% { transform: translate(0, 0) scale(1); }
  33%      { transform: translate(3vw, 4vh) scale(1.06); }
  66%      { transform: translate(-2vw, -3vh) scale(.96); }
}

/* ------------------------------------------------------------------ */
/* Navigation                                                         */
/* ------------------------------------------------------------------ */
.nav {
  position: sticky; top: 0; z-index: 60;
  backdrop-filter: blur(14px);
  background: color-mix(in srgb, var(--purple) 88%, transparent);
  border-bottom: 1px solid transparent;
  transition: border-color .3s, box-shadow .3s;
}
.nav.is-stuck { border-bottom-color: var(--p-line); box-shadow: 0 10px 30px -20px rgba(0,0,0,.7); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 74px; gap: 1rem; }

.brand { display: inline-flex; align-items: center; gap: .85rem; }
.brand__logo { height: 27px; width: auto; display: block; }
.brand__divider { width: 1px; height: 30px; background: rgba(255,255,255,.28); }
.brand__sub { font-family: var(--font-display); font-size: .64rem; line-height: 1.25;
  letter-spacing: .16em; text-transform: uppercase; color: var(--on-purple-muted); font-weight: 600; }

.nav__links { display: flex; align-items: center; gap: 1.6rem; }
.nav__links a { font-family: var(--font-display); font-size: .9rem; color: var(--on-purple-muted); font-weight: 600; transition: color .2s; position: relative; }
.nav__links a:hover { color: #fff; }
.nav__links a::after { content: ""; position: absolute; left: 0; right: 100%; bottom: -7px; height: 2px; background: var(--accent-soft); transition: right .25s; }
.nav__links a:hover::after { right: 0; }

.theme-toggle {
  display: grid; place-items: center; width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,.28); background: rgba(255,255,255,.06);
  color: #fff; cursor: pointer; font-size: 1.05rem; transition: transform .25s, border-color .2s, background .2s;
}
.theme-toggle:hover { transform: rotate(-25deg); border-color: var(--magenta); background: rgba(255,255,255,.12); }

.nav__burger { display: none; flex-direction: column; gap: 5px; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav__burger span { width: 24px; height: 2px; background: #fff; border-radius: 2px; transition: .25s; }
.nav__burger.is-open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav__burger.is-open span:nth-child(2) { opacity: 0; }
.nav__burger.is-open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ------------------------------------------------------------------ */
/* Buttons                                                            */
/* ------------------------------------------------------------------ */
.btn {
  display: inline-flex; align-items: center; gap: .5rem;
  font-family: var(--font-display); font-weight: 700; font-size: .9rem;
  padding: .8rem 1.4rem; border-radius: var(--btn-radius); cursor: pointer;
  border: 1px solid transparent; transition: transform .15s, box-shadow .25s, background .2s, color .2s, border-color .2s;
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }
.btn--primary { background: var(--accent-soft); color: var(--accent-ink); box-shadow: 0 10px 22px -14px rgba(0,0,0,.5); }
.btn--primary:hover { background: var(--accent-soft-2); transform: translateY(-2px); box-shadow: 0 14px 28px -14px rgba(0,0,0,.55); }
.btn--ghost { background: transparent; color: var(--text); border-color: var(--line-2); }
.btn--ghost:hover { border-color: var(--accent-soft); color: var(--accent-soft); }
.btn--sm { padding: .56rem 1rem; font-size: .82rem; }

/* Calendar provider menu */
.calendar-menu {
  position: fixed;
  z-index: 140;
  width: min(310px, calc(100vw - 24px));
  padding: .55rem;
  color: var(--text);
  background: var(--surface);
  border: 1px solid var(--line-2);
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow);
}
.calendar-menu[hidden] { display: none; }
.calendar-menu__title {
  padding: .55rem .7rem .45rem;
  color: var(--muted);
  font-family: var(--font-display);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .04em;
}
.calendar-menu__item {
  display: block;
  width: 100%;
  padding: .68rem .75rem;
  color: var(--text);
  background: transparent;
  border: 0;
  border-radius: var(--btn-radius);
  cursor: pointer;
  font: 700 .86rem var(--font-display);
  text-align: left;
}
.calendar-menu__item:hover,
.calendar-menu__item:focus-visible {
  color: var(--brand-text);
  background: var(--surface-2);
  outline: none;
}
.calendar-menu__note {
  margin: .45rem .7rem .35rem;
  color: var(--muted);
  font-size: .72rem;
  line-height: 1.45;
}

/* ------------------------------------------------------------------ */
/* Hero                                                               */
/* ------------------------------------------------------------------ */
.hero {
  position: relative; overflow: hidden;
  padding: clamp(3rem, 8vw, 6.5rem) 0 clamp(2.5rem, 5vw, 4.5rem);
  background:
    radial-gradient(120% 120% at 85% -10%, rgba(230,161,193,.20), transparent 55%),
    linear-gradient(165deg, #2c149e 0%, var(--purple) 45%, var(--purple-deep) 100%);
}
.hero::after { content: ""; position: absolute; inset: 0; pointer-events: none;
  background: linear-gradient(180deg, transparent 75%, var(--bg)); opacity: .0; }

.hero__star {
  position: absolute; top: 50%; right: -6%; transform: translateY(-50%);
  width: min(52vw, 620px); aspect-ratio: 81 / 101; opacity: .07; pointer-events: none;
  background: linear-gradient(180deg, var(--gold), var(--magenta));
  -webkit-mask: url("../img/escp-star.svg") center / contain no-repeat;
          mask: url("../img/escp-star.svg") center / contain no-repeat;
}

.hero__inner { position: relative; z-index: 2; display: grid; grid-template-columns: 1.1fr .9fr; gap: clamp(2rem, 5vw, 4rem); align-items: center; }

.eyebrow { display: inline-flex; align-items: center; gap: .55rem; font-family: var(--font-display);
  font-size: .78rem; color: var(--on-purple-muted); text-transform: uppercase; letter-spacing: .14em; font-weight: 600; margin-bottom: 1.4rem; }
.eyebrow .dot { width: 8px; height: 8px; border-radius: 50%; background: var(--accent-soft); box-shadow: 0 0 0 0 var(--brand-glow); animation: pulse 2.4s infinite; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 var(--brand-glow); } 70% { box-shadow: 0 0 0 10px transparent; } 100% { box-shadow: 0 0 0 0 transparent; } }

.hero__title { font-size: clamp(2.7rem, 7vw, 5rem); font-weight: 800; letter-spacing: -.02em; }
.hero__lead { font-size: clamp(1.02rem, 1.4vw, 1.18rem); color: var(--on-purple-muted); max-width: 46ch; margin: 1.4rem 0 2rem; }
.hero__actions { display: flex; flex-wrap: wrap; gap: .8rem; margin-top: 2rem; }

/* Next-seminar spotlight */
.spotlight {
  position: relative; border-radius: var(--radius);
  background: linear-gradient(180deg, rgba(255,255,255,.07), rgba(255,255,255,.03));
  border: 1px solid var(--p-line-2); padding: 1.7rem; box-shadow: var(--shadow); overflow: hidden;
}
.spotlight::before { content: ""; position: absolute; inset: -1px; border-radius: inherit; padding: 1px;
  background: linear-gradient(140deg, var(--accent-soft), transparent 45%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor; mask-composite: exclude; pointer-events: none; }
.spotlight__skeleton { color: var(--on-purple-muted); padding: 3rem 1rem; text-align: center; }
.spotlight__tag { display: inline-flex; align-items: center; gap: .5rem; font-family: var(--font-display);
  font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .14em; color: var(--gold); margin-bottom: 1rem; }
.spotlight__tag .live { width: 8px; height: 8px; border-radius: 50%; background: var(--accent-soft); animation: pulse 2s infinite; }
.spotlight__top { display: flex; gap: 1rem; align-items: center; }
.spotlight__title { font-size: 1.32rem; margin: .2rem 0 .35rem; }
.paper-coauthors { color: var(--muted); font-size: .84rem; font-style: italic; margin: 0 0 .65rem; }
.spotlight .paper-coauthors { color: var(--on-purple-muted); }
.spotlight__speaker { color: var(--on-purple-muted); font-size: .95rem; }
.spotlight__speaker strong { color: #fff; font-weight: 700; }
.spotlight__meta { display: flex; flex-wrap: wrap; gap: .5rem; margin: 1.1rem 0; }
.spotlight__actions { display: flex; flex-wrap: wrap; gap: .6rem; }

/* ------------------------------------------------------------------ */
/* Sections                                                           */
/* ------------------------------------------------------------------ */
.section { padding: clamp(3.5rem, 7vw, 6rem) 0; position: relative; }
.section--alt { background: var(--bg-2); border-block: 1px solid var(--line); }
.section__head { display: flex; align-items: flex-end; justify-content: space-between; gap: 1.5rem; flex-wrap: wrap; margin-bottom: 2.4rem; }
.section__title { font-size: clamp(1.9rem, 3.6vw, 2.7rem); font-weight: 800; }

/* Filters */
.filters { display: flex; flex-wrap: wrap; gap: .5rem; }
.chip {
  font-family: var(--font-display); font-size: .8rem; font-weight: 600;
  padding: .46rem .9rem; border-radius: var(--btn-radius); cursor: pointer;
  background: var(--surface); border: 1px solid var(--line-2); color: var(--muted); transition: .2s;
}
.chip:hover { color: var(--text); border-color: var(--accent-soft); }
.chip.is-active { background: var(--accent-soft); color: var(--accent-ink); border-color: var(--accent-soft); }
.chip__count { opacity: .7; margin-left: .35rem; font-variant-numeric: tabular-nums; }

/* ------------------------------------------------------------------ */
/* Upcoming cards                                                     */
/* ------------------------------------------------------------------ */
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(340px, 1fr)); gap: 1.4rem; }

/* Upcoming — single-row slider/carousel */
.carousel { position: relative; }
.carousel__track {
  display: flex; gap: 1.4rem;
  overflow-x: auto; overflow-y: hidden;
  scroll-snap-type: x proximity; scroll-behavior: smooth;
  padding: 14px 2px 26px;
  scrollbar-width: none; -webkit-overflow-scrolling: touch; cursor: grab;
}
.carousel__track::-webkit-scrollbar { display: none; }
.carousel__track.is-dragging { cursor: grabbing; scroll-behavior: auto; scroll-snap-type: none; user-select: none; }
.carousel__track > .card { flex: 0 0 clamp(290px, 80vw, 358px); scroll-snap-align: start; }

.carousel__nav {
  position: absolute; top: 50%; transform: translateY(-50%); z-index: 6;
  width: 46px; height: 46px; border-radius: 50%; display: grid; place-items: center;
  background: var(--accent-soft); color: var(--accent-ink); border: 2px solid color-mix(in srgb, var(--accent-soft) 55%, #fff);
  cursor: pointer; font-family: var(--font-display); font-size: 1.5rem; line-height: 1; padding-bottom: 3px;
  box-shadow: 0 10px 22px -12px rgba(0,0,0,.4); transition: transform .18s, background .2s, opacity .25s;
}
.carousel__nav--prev { left: -12px; }
.carousel__nav--next { right: -12px; }
.carousel__nav:hover { background: var(--accent-soft-2); transform: translateY(-50%) scale(1.08); }
.carousel__nav:disabled { opacity: 0; pointer-events: none; }
.carousel:not(.has-overflow) .carousel__nav { display: none; }

.carousel__bar { position: relative; height: 4px; border-radius: 4px; background: var(--line); margin: .1rem .25rem 0; }
.carousel__bar span { position: absolute; top: 0; left: 0; height: 100%; border-radius: 4px; background: var(--accent-soft); min-width: 24px; transition: left .15s ease, width .15s ease; }

.card {
  position: relative; display: flex; flex-direction: column;
  background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius); overflow: hidden; cursor: pointer;
  transition: transform .25s, border-color .25s, box-shadow .25s;
}
.card:hover { transform: translateY(-6px); border-color: var(--accent-soft); box-shadow: var(--shadow); }

.card__date {
  position: absolute; top: 18px; left: 14px; z-index: 2;
  display: flex; flex-direction: column; align-items: center; line-height: 1;
  background: rgba(10, 10, 12, .6); backdrop-filter: blur(6px);
  border: 1px solid rgba(255,255,255,.22); border-radius: var(--radius-sm); padding: .5rem .65rem; min-width: 56px; color: #fff;
}
.card__date .d-day { font-family: var(--font-display); font-size: 1.4rem; font-weight: 800; }
.card__date .d-mon { font-size: .64rem; text-transform: uppercase; letter-spacing: .1em; color: var(--gold); margin-top: 3px; }

.card__media { position: relative; aspect-ratio: 16 / 10; overflow: hidden; background: var(--surface-2); }
.card__media img { position: relative; width: 100%; height: 100%; object-fit: cover; object-position: var(--photo-position, center 30%); filter: saturate(.9) contrast(1.03); transition: transform .5s, filter .5s; }
.card:hover .card__media img { transform: scale(1.05); }
.card:hover .card__media img { filter: saturate(1) contrast(1.02); }
.card__media::before { content: ""; position: absolute; inset: 0; z-index: 1; pointer-events: none; background: linear-gradient(135deg, rgba(36, 0, 133, .12), rgba(222, 72, 139, .08)); mix-blend-mode: soft-light; }
.card__media::after { content: ""; position: absolute; inset: 0; z-index: 2; pointer-events: none; background: linear-gradient(180deg, transparent 45%, var(--surface) 100%); }

/* Generated avatar fallback */
.avatar { width: 100%; height: 100%; display: grid; place-items: center; font-family: var(--font-display); font-weight: 800; font-size: 2.6rem; color: #fff; }

.card__campus {
  position: absolute; top: 18px; right: 14px; z-index: 2;
  font-family: var(--font-display); font-size: .66rem; font-weight: 700; text-transform: uppercase; letter-spacing: .08em;
  padding: .3rem .6rem; border-radius: var(--btn-radius); backdrop-filter: blur(6px);
  background: rgba(10, 10, 12, .55); border: 1px solid rgba(255,255,255,.22); color: #fff;
}

.card__body { padding: 1.2rem 1.3rem 1.4rem; display: flex; flex-direction: column; flex: 1; }
.card__title { font-size: 1.18rem; font-weight: 700; margin-bottom: .55rem; }
.card__speaker { color: var(--muted); font-size: .92rem; margin-bottom: .7rem; }
.card__speaker strong { color: var(--text); font-weight: 700; }
.speaker-link { color: inherit; border-bottom: 1px solid transparent; }
.speaker-link:hover { color: var(--accent-soft); border-bottom-color: currentColor; }
.card__abstract { color: var(--muted); font-size: .92rem; margin-bottom: 1.1rem; display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden; }

.card__foot { margin-top: auto; display: flex; align-items: center; justify-content: space-between; gap: .5rem; padding-top: 1rem; border-top: 1px solid var(--line); }
.card__meta-time { font-size: .82rem; color: var(--muted); display: flex; align-items: center; gap: .4rem; }
.card__meta-time svg { width: 14px; height: 14px; }
.card__more { padding: 0; background: none; border: 0; cursor: pointer; font-family: var(--font-display); font-weight: 700; font-size: .82rem; color: var(--brand-text); display: inline-flex; align-items: center; gap: .35rem; transition: gap .2s; }
.card:hover .card__more { gap: .55rem; }

/* ------------------------------------------------------------------ */
/* Past list                                                          */
/* ------------------------------------------------------------------ */
.past-list { display: flex; flex-direction: column; gap: .75rem; }
.past-item {
  display: grid; grid-template-columns: auto 1fr auto; gap: 1.2rem; align-items: center;
  padding: 1.05rem 1.3rem; background: var(--surface); border: 1px solid var(--line);
  border-radius: var(--radius-sm); cursor: pointer; transition: .2s;
}
.past-item:hover { transform: translateX(4px); box-shadow: var(--shadow-sm); }
.past-item__date { text-align: center; min-width: 58px; color: var(--muted); line-height: 1.15; }
.past-item__date .pd-day { font-family: var(--font-display); font-size: 1.25rem; font-weight: 800; color: var(--text); }
.past-item__date .pd-yr { font-size: .72rem; }
.past-item__main { min-width: 0; }
.past-item__title { font-family: var(--font-display); font-weight: 700; font-size: 1.02rem; margin-bottom: .2rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.past-item__speaker { color: var(--muted); font-size: .88rem; }
.past-item__speaker strong { color: var(--text); }
.past-item__links { display: flex; gap: .4rem; flex: none; }
.pill { font-family: var(--font-display); font-size: .72rem; font-weight: 600; padding: .32rem .65rem; border-radius: var(--btn-radius); border: 1px solid var(--line-2); color: var(--muted); transition: .2s; }
.pill:hover { border-color: var(--accent-soft); color: var(--accent-soft); }

/* Meta pills (date/time/place) */
.meta { display: inline-flex; align-items: center; gap: .4rem; font-size: .82rem; color: var(--muted);
  background: var(--surface-2); border: 1px solid var(--line); padding: .35rem .65rem; border-radius: var(--btn-radius); }
.meta svg { width: 14px; height: 14px; opacity: .85; }

/* ------------------------------------------------------------------ */
/* About                                                              */
/* ------------------------------------------------------------------ */
.about { max-width: 760px; }
.about__intro p { color: var(--muted); max-width: 62ch; }
.about__intro .section__title { margin-bottom: 1.2rem; }

/* ------------------------------------------------------------------ */
/* Footer                                                             */
/* ------------------------------------------------------------------ */
.footer { background: linear-gradient(180deg, var(--purple), var(--purple-deep)); border-top: 1px solid var(--p-line); padding-top: clamp(3rem, 6vw, 4.5rem); margin-top: 2rem; }
.footer__inner { display: grid; grid-template-columns: 1.4fr 1fr 1fr 1.2fr; gap: 2rem; padding-bottom: 2.5rem; }
.footer__logo { height: 32px; width: auto; margin-bottom: 1rem; }
.footer__name { font-family: var(--font-display); font-weight: 700; font-size: 1.1rem; margin: 0 0 .3rem; color: #fff; }
.footer__tag { color: var(--on-purple-muted); font-size: .9rem; }
.footer__col h3 { font-family: var(--font-display); font-size: .78rem; text-transform: uppercase; letter-spacing: .14em; color: var(--gold); margin-bottom: .9rem; }
.footer__col p { font-size: .92rem; color: var(--on-purple-muted); margin-bottom: .7rem; }
.footer__col a { color: #fff; border-bottom: 1px solid transparent; transition: .2s; }
.footer__col a:hover { color: var(--gold); border-color: var(--gold); }

.footer__bar { display: flex; justify-content: space-between; align-items: center; gap: 1rem; flex-wrap: wrap; padding: 1.4rem 0; border-top: 1px solid var(--p-line); color: var(--on-purple-muted); font-size: .85rem; }
.footer__links a:hover { color: var(--gold); }

/* ------------------------------------------------------------------ */
/* Modal                                                              */
/* ------------------------------------------------------------------ */
.modal { position: fixed; inset: 0; z-index: 100; display: grid; place-items: center; padding: 1.5rem; }
.modal[hidden] { display: none; }
.modal__backdrop { position: absolute; inset: 0; background: rgba(7, 0, 36, .74); backdrop-filter: blur(6px); }
.modal__panel { position: relative; width: min(720px, 100%); max-height: 88vh; overflow-y: auto;
  background: var(--surface); border: 1px solid var(--line-2); border-radius: var(--radius); box-shadow: var(--shadow);
  animation: pop .3s cubic-bezier(.2, .8, .25, 1); }
@keyframes pop { from { opacity: 0; transform: translateY(16px) scale(.97); } to { opacity: 1; transform: none; } }
.modal__close { position: absolute; top: 14px; right: 14px; z-index: 3; width: 38px; height: 38px; border-radius: 50%;
  border: 1px solid rgba(255,255,255,.3); background: rgba(10,10,12,.5); color: #fff; font-size: 1.4rem; line-height: 1; cursor: pointer; transition: .2s; }
.modal__close:hover { border-color: var(--accent-soft); transform: rotate(90deg); }

.modal__hero { position: relative; aspect-ratio: 21 / 8; overflow: hidden; background: var(--surface-2); }
.modal__hero img { width: 100%; height: 100%; object-fit: cover; object-position: var(--photo-position, center 30%); }
.modal__hero .avatar { font-size: 4rem; }
.modal__hero::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 30%, var(--surface)); }

.modal__content { padding: 0 clamp(1.4rem, 4vw, 2.2rem) clamp(1.6rem, 4vw, 2.2rem); margin-top: -2.5rem; position: relative; z-index: 2; }
.modal__content h2 { font-size: clamp(1.4rem, 3vw, 2rem); margin-bottom: 1rem; }
.modal__content h2 + .paper-coauthors { margin-top: -.55rem; margin-bottom: 1rem; }
.modal__speaker { display: flex; align-items: center; gap: .8rem; margin-bottom: 1.3rem; }
.modal__speaker > div:first-child { width: 52px; height: 52px; border-radius: 50%; overflow: hidden; flex: none; }
.modal__speaker img,
.spotlight__top img { width: 100%; height: 100%; object-fit: cover; object-position: var(--photo-position, center 30%); }
.modal__speaker .ms-name { font-family: var(--font-display); font-weight: 700; }
.modal__speaker .ms-aff { color: var(--muted); font-size: .9rem; }
.modal__meta { display: flex; flex-wrap: wrap; gap: .5rem; margin-bottom: 1.4rem; }
.modal__section-label { font-family: var(--font-display); font-size: .76rem; text-transform: uppercase; letter-spacing: .14em; color: var(--muted-2); margin: 1.4rem 0 .6rem; }
.modal__abstract { color: var(--text); opacity: .92; }
.modal__actions { display: flex; flex-wrap: wrap; gap: .6rem; margin-top: 1.6rem; padding-top: 1.4rem; border-top: 1px solid var(--line); }

/* ------------------------------------------------------------------ */
/* Scroll reveal                                                      */
/* ------------------------------------------------------------------ */
.reveal { opacity: 0; transform: translateY(22px); transition: opacity .6s ease, transform .6s ease; }
.reveal.is-in { opacity: 1; transform: none; }

/* ------------------------------------------------------------------ */
/* Responsive                                                         */
/* ------------------------------------------------------------------ */
@media (max-width: 900px) {
  .hero__inner { grid-template-columns: 1fr; }
  .about { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .nav__links {
    position: fixed; inset: 74px 0 auto 0; flex-direction: column; align-items: flex-start; gap: 0;
    background: var(--purple); border-bottom: 1px solid var(--p-line); padding: .5rem 1.25rem 1.25rem;
    transform: translateY(-130%); transition: transform .3s; box-shadow: var(--shadow);
  }
  .nav__links.is-open { transform: none; }
  .nav__links a { width: 100%; padding: .9rem 0; border-bottom: 1px solid var(--p-line); }
  .nav__links a::after { display: none; }
  .theme-toggle { margin-top: .8rem; }
  .nav__burger { display: flex; }
  .hero__star { opacity: .05; right: -20%; }
}

@media (max-width: 560px) {
  .cards { grid-template-columns: 1fr; }
  .carousel__nav { display: none !important; }
  .footer__inner { grid-template-columns: 1fr; }
  .past-item { grid-template-columns: auto 1fr; }
  .past-item__links { grid-column: 2; justify-content: flex-start; }
  .section__head { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}