/* ICE2026 — application styles (AHLab design language) */

* { box-sizing: border-box; }
html, body { height: 100%; overflow: hidden; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-text);
  font-size: 15.5px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, h4 { font-family: var(--font-display); font-weight: 700; line-height: 1.15; margin: 0 0 0.5em; color: var(--text); }
p { margin: 0 0 1em; }
a { color: var(--color-accent); text-decoration: none; }
a:hover { color: var(--color-accent-dark); }
img { max-width: 100%; }
button { font-family: inherit; }

/* ------------------------------------------------------------------- shell */
.shell { display: flex; height: 100vh; }
.view { flex: 1; min-width: 0; overflow-y: auto; padding: 24px 32px; }

/* ----------------------------------------------------------------- sidebar */
.sidebar {
  width: 212px; flex: none;
  display: flex; flex-direction: column; gap: 30px;
  padding: 24px 14px 20px;
  background: #fff; border-right: 1px solid var(--border);
}
.brand { display: flex; align-items: center; gap: 10px; padding: 0 8px; }
.brand-mark {
  width: 26px; height: 26px; border-radius: 8px;
  background: var(--gradient-brand);
  box-shadow: 0 2px 8px rgba(97, 0, 255, 0.35);
}
.brand-name {
  font-family: var(--font-display); font-weight: 800; font-size: 21px;
  letter-spacing: -0.02em; color: var(--text);
}
.brand-year {
  background: var(--gradient-brand);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.nav { display: flex; flex-direction: column; gap: 4px; flex: 1; }
.nav a {
  display: flex; align-items: center; gap: 11px;
  padding: 10px 14px; border-radius: 10px;
  color: var(--text-body); font-weight: 500; font-size: 14.5px;
  position: relative;
}
.nav a i { font-size: 14px; width: 18px; text-align: center; color: var(--text-faint); }
.nav a:hover { background: var(--bg-subtle); color: var(--text); }
.nav a.active { background: var(--color-neutral-100); color: #fff; }
.nav a.active i { color: rgba(255, 255, 255, 0.7); }
.nav .badge { margin-left: auto; }
.badge {
  min-width: 18px; height: 18px; padding: 0 5px; border-radius: 999px;
  background: var(--color-accent); color: #fff;
  font-size: 11px; font-weight: 600; line-height: 18px; text-align: center;
}
.sidebar-actions { display: flex; flex-direction: column; gap: 10px; }
.sidebar-actions .btn { width: 100%; }

.avatar-btn { display: flex; align-items: center; gap: 8px; background: none; border: 1px solid var(--border); border-radius: 999px; padding: 4px 12px 4px 4px; cursor: pointer; font-size: 14px; color: var(--text); }
.avatar-btn:hover { border-color: var(--border-strong); background: var(--bg-subtle); }

/* ----------------------------------------------------------------- buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  border: 1px solid transparent; border-radius: 999px; cursor: pointer;
  padding: 10px 20px; font-size: 14.5px; font-weight: 600; line-height: 1.2;
  transition: background 0.15s, border-color 0.15s, color 0.15s, box-shadow 0.15s, transform 0.1s;
  text-decoration: none;
}
.btn:active { transform: translateY(1px); }
.btn-primary { background: var(--color-accent); color: #fff; }
.btn-primary:hover { background: var(--color-accent-dark); color: #fff; }
.btn-gradient { background: var(--gradient-brand); color: #fff; box-shadow: 0 4px 16px -4px rgba(97, 0, 255, 0.45); }
.btn-gradient:hover { filter: brightness(1.06); color: #fff; }
.btn-outline { background: #fff; border-color: var(--border-strong); color: var(--text); }
.btn-outline:hover { border-color: var(--color-accent); color: var(--color-accent); }
.btn-ghost { background: transparent; color: var(--text-body); }
.btn-ghost:hover { background: var(--bg-subtle); color: var(--text); }
.btn-danger { background: #fff; border-color: #e5b3b3; color: #b3261e; }
.btn-danger:hover { background: #fdf3f2; }
.btn-sm { padding: 7px 14px; font-size: 13.5px; }
.btn[disabled] { opacity: 0.55; pointer-events: none; }
.btn .spin { display: none; }
.btn.loading .spin { display: inline-block; }
.btn.loading .label { opacity: 0.4; }
.spin {
  width: 14px; height: 14px; border-radius: 50%;
  border: 2px solid currentColor; border-right-color: transparent;
  animation: rot 0.7s linear infinite;
}
@keyframes rot { to { transform: rotate(360deg); } }

/* -------------------------------------------------------------------- hero */
.hero { padding: 44px 0 36px; }
.hero-kicker {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font-display); font-weight: 800; font-size: 12.5px;
  letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--color-accent);
}
.hero h1 {
  font-size: clamp(34px, 5.4vw, 56px); letter-spacing: -0.03em; margin: 10px 0 12px;
}
.hero h1 .grad {
  background: var(--gradient-brand);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p { max-width: 560px; color: var(--text-body); font-size: 17px; }
.hero-cta { display: flex; gap: 12px; margin-top: 22px; flex-wrap: wrap; }
.hero-stats { display: flex; gap: 36px; margin-top: 34px; flex-wrap: wrap; }
.stat b { display: block; font-family: var(--font-display); font-weight: 700; font-size: 28px; letter-spacing: -0.02em; }
.stat span { color: var(--text-muted); font-size: 13.5px; }

/* ---------------------------------------------------------------- sections */
.section { margin-top: 40px; }
.section-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.section-head h2 { font-size: 24px; letter-spacing: -0.02em; margin: 0; }
.section-head .sub { color: var(--text-muted); font-size: 14px; }

/* ------------------------------------------------------------------ search */
.toolbar { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin-bottom: 22px; }
.search {
  flex: 1; min-width: 240px; display: flex; align-items: center; gap: 10px;
  background: var(--bg-subtle); border: 1px solid var(--border);
  border-radius: 999px; padding: 10px 18px;
}
.search:focus-within { border-color: var(--color-accent-light); background: #fff; box-shadow: 0 0 0 3px rgba(97, 0, 255, 0.08); }
.search i { color: var(--text-faint); font-size: 14px; }
.search input { border: none; outline: none; background: transparent; flex: 1; font-size: 15px; font-family: inherit; color: var(--text); }
.filter-chips { display: flex; gap: 8px; flex-wrap: wrap; }
.chip {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--bg-subtle); border: 1px solid var(--border);
  color: var(--text-body); border-radius: 999px; padding: 5px 13px;
  font-size: 13px; font-weight: 500; cursor: pointer; user-select: none;
  transition: all 0.12s;
}
.chip:hover { border-color: var(--color-accent-light); color: var(--color-accent); }
.chip.on { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }
.chip.static { cursor: default; }
.chip.static:hover { border-color: var(--border); color: var(--text-body); }

/* ------------------------------------------------------------------- cards */
.grid { display: grid; gap: 18px; }
.grid-people { grid-template-columns: repeat(auto-fill, minmax(255px, 1fr)); }
.grid-teams { grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); }

.card {
  background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow 0.18s, transform 0.18s, border-color 0.18s;
}
a.card { color: inherit; display: block; }
.card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); border-color: var(--border-strong); }

.person { padding: 20px; position: relative; overflow: hidden; }
.person.mentor::before {
  content: ""; position: absolute; inset: 0 auto 0 0; width: 4px;
  background: var(--gradient-brand);
}
.person-top { display: flex; gap: 14px; align-items: center; margin-bottom: 10px; }
.avatar {
  width: 56px; height: 56px; border-radius: 50%; object-fit: cover; flex: none;
  background: var(--bg-subtle); border: 1px solid var(--border);
}
.avatar-lg { width: 112px; height: 112px; }
.avatar-sm { width: 32px; height: 32px; }
.avatar-fallback {
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-weight: 700; color: #fff;
  background: var(--gradient-brand); border: none;
}
.person-name { font-family: var(--font-display); font-weight: 700; font-size: 17px; letter-spacing: -0.01em; display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.role-tag {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 11px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase;
  border-radius: 999px; padding: 3px 9px;
}
.role-tag.mentor { background: rgba(97, 0, 255, 0.09); color: var(--color-accent); }
.role-tag.admin { background: rgba(14, 15, 17, 0.08); color: var(--text); }
.person-affil { color: var(--text-muted); font-size: 13px; }
.person-bio { color: var(--text-body); font-size: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 10px; }
.person-expertise { color: var(--color-accent-dark); font-size: 13px; font-weight: 500; display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical; overflow: hidden; margin-bottom: 10px; }
.skills { display: flex; gap: 6px; flex-wrap: wrap; }
.skills .more { color: var(--text-faint); font-size: 12.5px; align-self: center; }

/* teams */
.team-card { overflow: hidden; display: flex; flex-direction: column; }
.team-cover { height: 120px; background: var(--gradient-brand); position: relative; }
.team-cover img { width: 100%; height: 100%; object-fit: cover; }
.team-cover .team-initial {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display); font-weight: 800; font-size: 44px; color: rgba(255,255,255,0.9);
}
.team-body { padding: 18px 20px 20px; flex: 1; display: flex; flex-direction: column; gap: 8px; }
.team-name { font-family: var(--font-display); font-weight: 700; font-size: 18px; margin: 0; }
.team-desc { color: var(--text-body); font-size: 14px; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; flex: 1; }
.team-meta { display: flex; align-items: center; gap: 8px; color: var(--text-muted); font-size: 13px; }
.member-stack { display: flex; }
.member-stack .avatar-sm { margin-left: -8px; border: 2px solid #fff; }
.member-stack .avatar-sm:first-child { margin-left: 0; }

/* ------------------------------------------------------------------ detail */
.page-head { display: flex; gap: 24px; align-items: flex-start; flex-wrap: wrap; margin-bottom: 28px; }
.page-head .info { flex: 1; min-width: 260px; }
.page-head h1 { font-size: 32px; letter-spacing: -0.02em; margin-bottom: 4px; }
.meta-row { display: flex; gap: 18px; flex-wrap: wrap; color: var(--text-muted); font-size: 14px; margin: 6px 0 12px; }
.meta-row i { margin-right: 6px; color: var(--text-faint); }
.detail-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 24px; align-items: start; }
.panel { background: #fff; border: 1px solid var(--border); border-radius: var(--radius-lg); padding: 22px; }
.panel h3 { font-size: 16px; margin-bottom: 14px; display: flex; align-items: center; gap: 8px; }
.panel h3 i { color: var(--color-accent); font-size: 14px; }
.link-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }
.link-list li { display: flex; gap: 10px; align-items: baseline; }
.link-list i { color: var(--text-faint); font-size: 13px; }

/* ------------------------------------------------------------------- forms */
.form { display: flex; flex-direction: column; gap: 18px; max-width: 640px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.field label { display: block; font-weight: 600; font-size: 13.5px; margin-bottom: 6px; color: var(--text); }
.field .hint { font-weight: 400; color: var(--text-faint); font-size: 12.5px; margin-left: 6px; }
.input, textarea.input, select.input {
  width: 100%; border: 1px solid var(--border-strong); border-radius: var(--radius-sm);
  padding: 10px 14px; font-size: 15px; font-family: inherit; color: var(--text);
  background: #fff; outline: none; transition: border-color 0.12s, box-shadow 0.12s;
}
.input:focus { border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(97, 0, 255, 0.1); }
textarea.input { resize: vertical; min-height: 90px; }
.tag-input { display: flex; flex-wrap: wrap; gap: 6px; border: 1px solid var(--border-strong); border-radius: var(--radius-sm); padding: 8px 10px; background: #fff; cursor: text; }
.tag-input:focus-within { border-color: var(--color-accent); box-shadow: 0 0 0 3px rgba(97, 0, 255, 0.1); }
.tag-input input { border: none; outline: none; flex: 1; min-width: 140px; font-size: 14.5px; font-family: inherit; padding: 4px; }
.tag-input .chip i { cursor: pointer; font-size: 11px; }
.suggestions { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 8px; }
.photo-edit { display: flex; align-items: center; gap: 16px; }
.form-actions { display: flex; gap: 12px; align-items: center; }
.form-status { font-size: 14px; color: #b3261e; min-height: 20px; }
.form-status.ok { color: #1a7f37; }

/* ----------------------------------------------------------- announcements */
.ann { padding: 20px 22px; margin-bottom: 14px; }
.ann-head { display: flex; align-items: center; gap: 10px; margin-bottom: 6px; flex-wrap: wrap; }
.ann-head h3 { margin: 0; font-size: 17px; }
.ann-type { font-size: 11px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.05em; border-radius: 999px; padding: 3px 10px; }
.ann-type.general { background: var(--bg-subtle); color: var(--text-muted); }
.ann-type.important { background: rgba(97, 0, 255, 0.09); color: var(--color-accent); }
.ann-type.urgent { background: #fdecea; color: #b3261e; }
.ann-pin { color: var(--color-accent); font-size: 13px; }
.ann-date { color: var(--text-faint); font-size: 13px; margin-left: auto; }
.ann-body { color: var(--text-body); white-space: pre-wrap; margin: 0; }

/* ---------------------------------------------------------------- messages */
.msg-layout { display: grid; grid-template-columns: 300px 1fr; gap: 20px; align-items: start; }
.conv-list { display: flex; flex-direction: column; gap: 6px; }
.conv {
  display: flex; gap: 12px; align-items: center; padding: 12px 14px;
  border-radius: var(--radius-md); cursor: pointer; border: 1px solid transparent;
}
.conv:hover { background: var(--bg-subtle); }
.conv.active { background: #fff; border-color: var(--border-strong); box-shadow: var(--shadow-sm); }
.conv .who { font-weight: 600; font-size: 14.5px; }
.conv .last { color: var(--text-muted); font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; max-width: 170px; }
.thread { display: flex; flex-direction: column; height: 60vh; }
.thread-scroll { flex: 1; overflow-y: auto; display: flex; flex-direction: column; gap: 10px; padding: 6px 2px; }
.bubble { max-width: 72%; padding: 10px 15px; border-radius: 16px; font-size: 14.5px; white-space: pre-wrap; word-break: break-word; }
.bubble.me { align-self: flex-end; background: var(--color-accent); color: #fff; border-bottom-right-radius: 5px; }
.bubble.them { align-self: flex-start; background: var(--bg-subtle); border: 1px solid var(--border); border-bottom-left-radius: 5px; }
.bubble time { display: block; font-size: 10.5px; opacity: 0.65; margin-top: 3px; }
.thread-input { display: flex; gap: 10px; margin-top: 12px; }
.thread-input textarea { flex: 1; min-height: 44px; max-height: 120px; }

/* feed (team posts) */
.feed { display: flex; flex-direction: column; gap: 12px; }
.feed-item { display: flex; gap: 12px; }
.feed-item .body { background: var(--bg-subtle); border: 1px solid var(--border); border-radius: var(--radius-md); padding: 10px 14px; flex: 1; }
.feed-item .who { font-weight: 600; font-size: 13px; }
.feed-item .when { color: var(--text-faint); font-size: 12px; margin-left: 8px; }
.feed-item p { margin: 4px 0 0; font-size: 14px; white-space: pre-wrap; }

/* ------------------------------------------------------------------- admin */
.table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: var(--radius-md); background: #fff; }
table.admin { border-collapse: collapse; width: 100%; font-size: 14px; }
table.admin th, table.admin td { text-align: left; padding: 10px 14px; border-bottom: 1px solid var(--border); white-space: nowrap; }
table.admin th { background: var(--bg-subtle); font-weight: 600; font-size: 12.5px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-muted); }
table.admin tr:last-child td { border-bottom: none; }

/* ------------------------------------------------------------ modal, toast */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 100; display: flex; align-items: center; justify-content: center;
  background: rgba(14, 15, 17, 0.45); padding: 20px;
  animation: fadein 0.15s;
}
.modal {
  background: #fff; border-radius: var(--radius-lg); box-shadow: var(--shadow-lg);
  width: 100%; max-width: 560px; max-height: 88vh; overflow-y: auto; padding: 26px;
}
.modal h2 { font-size: 21px; margin-bottom: 18px; }
@keyframes fadein { from { opacity: 0; } }
.toast {
  position: fixed; bottom: 24px; left: 50%; transform: translateX(-50%); z-index: 200;
  background: var(--color-neutral-100); color: #fff; border-radius: 999px;
  padding: 11px 22px; font-size: 14px; box-shadow: var(--shadow-lg);
  display: flex; align-items: center; gap: 9px;
}
.toast[hidden] { display: none; }
.toast i { color: #7ee787; }
.toast.error i { color: #ff9b9b; }

/* ------------------------------------------------------------- empty/misc */
.empty {
  text-align: center; color: var(--text-muted); padding: 56px 20px;
  border: 1px dashed var(--border-strong); border-radius: var(--radius-lg);
}
.empty i { font-size: 30px; color: var(--text-faint); display: block; margin-bottom: 12px; }
.skeleton { border-radius: var(--radius-lg); background: linear-gradient(100deg, var(--bg-subtle) 40%, #fff 50%, var(--bg-subtle) 60%); background-size: 200% 100%; animation: shim 1.2s infinite; height: 160px; }
@keyframes shim { to { background-position: -200% 0; } }
.notice {
  display: flex; gap: 10px; align-items: center;
  background: rgba(97, 0, 255, 0.06); border: 1px solid rgba(97, 0, 255, 0.18);
  color: var(--color-accent-dark); border-radius: var(--radius-md);
  padding: 12px 16px; font-size: 14px; margin-bottom: 20px;
}

/* ----------------------------------------------------------- people / hive */
.people-page { height: 100%; display: flex; flex-direction: column; }
.people-head { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; }
.people-head h2 { font-size: 22px; letter-spacing: -0.02em; margin: 0; }
.legend { display: flex; gap: 18px; align-items: center; color: var(--text-muted); font-size: 13.5px; }
.legend .dot {
  display: inline-block; width: 11px; height: 11px; border-radius: 3px;
  margin-right: 7px; vertical-align: -1px;
}
.dot.mentor { background: var(--color-accent); }
.dot.participant { background: var(--gradient-start); }

.hive-wrap { flex: 1; min-height: 0; display: flex; align-items: center; justify-content: center; }
.hive { --hw: 110px; --hh: calc(var(--hw) * 1.1547); --hgap: 7px; }
.hive-row { display: flex; gap: var(--hgap); justify-content: center; }
.hive-row + .hive-row { margin-top: calc(var(--hh) * -0.25 + var(--hgap) * 0.87); }
.hex {
  width: var(--hw); height: var(--hh); flex: none; position: relative;
  clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%);
  padding: 4px; cursor: pointer;
  transition: transform 0.15s;
}
.hex.mentor { background: var(--color-accent); }
.hex.participant { background: var(--gradient-start); }
.hex:hover { transform: scale(1.12); z-index: 5; }
.hex-in {
  width: 100%; height: 100%; position: relative; overflow: hidden;
  clip-path: polygon(50% 0, 100% 25%, 100% 75%, 50% 100%, 0 75%, 0 25%);
  background: var(--bg-subtle);
}
.hex-in img { width: 100%; height: 100%; object-fit: cover; display: block; }
.hex-name {
  position: absolute; left: 0; right: 0; bottom: 0;
  padding: 22px 6px 14%; text-align: center;
  font-size: 11.5px; font-weight: 600; color: #fff;
  background: linear-gradient(transparent, rgba(14, 15, 17, 0.78));
  opacity: 0; transition: opacity 0.15s;
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.hex:hover .hex-name { opacity: 1; }

/* -------------------------------------------------------------- responsive */
@media (max-width: 860px) {
  .detail-grid, .msg-layout { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}