:root {
  --bg: #07150f;
  --bg-deep: #030806;
  --green: #0a1b14;
  --green-2: #123326;
  --silver: #e8e8e8;
  --platinum: #c9c9c9;
  --muted: #93a69a;
  --line: rgba(226, 226, 226, .24);
  --glass: rgba(9, 27, 20, .72);
  --blue: #c8f1ff;
  --blue-strong: #7fdfff;
  --danger: #ffb6a8;
  --shadow: 0 24px 80px rgba(0, 0, 0, .38);
  --serif: "Cinzel", Georgia, serif;
  --sans: "Source Sans 3", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--silver);
  font-family: var(--sans);
  background:
    radial-gradient(circle at 50% 8%, rgba(229, 207, 157, .13), transparent 18rem),
    radial-gradient(circle at 82% 20%, rgba(179, 220, 233, .16), transparent 15rem),
    radial-gradient(circle at 18% 72%, rgba(222, 190, 123, .11), transparent 18rem),
    radial-gradient(circle at 50% 15%, rgba(24, 68, 45, .58), transparent 38rem),
    linear-gradient(145deg, #06110c, #020604 72%);
  overflow-x: hidden;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image: linear-gradient(rgba(255,255,255,.035) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.025) 1px, transparent 1px);
  background-size: 42px 42px;
  mask-image: radial-gradient(circle at center, black, transparent 78%);
}

.ribbon {
  position: fixed;
  width: 34rem;
  height: .28rem;
  background: linear-gradient(90deg, transparent, #fff, #9bdcf0, #fff, transparent);
  opacity: .28;
  filter: blur(.2px);
  transform: rotate(-32deg);
  pointer-events: none;
}

.ribbon-a { right: -8rem; top: 9rem; }
.ribbon-b { left: -10rem; bottom: 7rem; transform: rotate(28deg); }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  align-items: center;
  padding: .9rem clamp(1rem, 4vw, 3rem);
  border-bottom: 1px solid var(--line);
  background: rgba(7, 21, 15, .68);
  backdrop-filter: blur(18px);
}

.topbar strong, h1, h2 {
  font-family: var(--serif);
  letter-spacing: .045em;
}

.eyebrow {
  margin: 0 0 .35rem;
  color: var(--blue);
  text-transform: uppercase;
  letter-spacing: .18em;
  font-size: .73rem;
  font-weight: 700;
}

main {
  width: min(1180px, calc(100vw - 2rem));
  margin: 3rem auto 5rem;
}

.panel {
  border: 1px solid var(--line);
  background: linear-gradient(145deg, rgba(10, 27, 20, .88), rgba(8, 16, 12, .74));
  box-shadow: var(--shadow), inset 0 1px 0 rgba(255,255,255,.08);
}

.hero {
  position: relative;
  display: grid;
  grid-template-columns: minmax(280px, .92fr) minmax(320px, .78fr);
  gap: clamp(1.1rem, 3vw, 2.3rem);
  align-items: center;
  max-width: 1050px;
  margin: 4vh auto;
  padding: clamp(1rem, 2.6vw, 1.7rem);
  border-radius: 34px;
  text-align: center;
  background:
    radial-gradient(circle at 18% 12%, rgba(229, 207, 157, .15), transparent 14rem),
    radial-gradient(circle at 84% 52%, rgba(174, 220, 235, .12), transparent 12rem),
    linear-gradient(145deg, rgba(5, 18, 12, .94), rgba(4, 10, 7, .86));
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  inset: -16%;
  pointer-events: none;
  background:
    radial-gradient(circle at 12% 28%, rgba(255, 239, 196, .25) 0 .18rem, transparent .24rem),
    radial-gradient(circle at 88% 18%, rgba(255, 255, 255, .22) 0 .14rem, transparent .2rem),
    radial-gradient(circle at 72% 76%, rgba(167, 217, 234, .16) 0 .2rem, transparent .28rem);
  filter: blur(.2px);
  opacity: .7;
}

.flyer-frame {
  position: relative;
  z-index: 1;
  border-radius: 28px;
  padding: clamp(.45rem, 1.3vw, .8rem);
  background:
    linear-gradient(145deg, rgba(255,255,255,.22), rgba(255,255,255,.04) 36%, rgba(111, 87, 51, .22)),
    rgba(4, 12, 8, .68);
  box-shadow: 0 30px 90px rgba(0,0,0,.46), 0 0 70px rgba(213, 197, 151, .1);
}

.flyer-frame::after {
  content: "";
  position: absolute;
  inset: .8rem;
  border-radius: 22px;
  pointer-events: none;
  box-shadow: inset 0 0 38px rgba(0,0,0,.42);
}

.flyer-frame img {
  display: block;
  width: 100%;
  max-height: min(72vh, 780px);
  object-fit: contain;
  border-radius: 22px;
  background: #07150f;
}

.login-card {
  position: relative;
  z-index: 1;
  padding: clamp(1.3rem, 4vw, 3rem);
  border: 1px solid rgba(232,232,232,.2);
  border-radius: 28px;
  background:
    radial-gradient(circle at 50% 0%, rgba(255, 239, 196, .1), transparent 12rem),
    rgba(3, 12, 8, .58);
  box-shadow: inset 0 1px 0 rgba(255,255,255,.08);
  backdrop-filter: blur(8px);
}

.crest {
  width: 86px;
  height: 86px;
  display: grid;
  place-items: center;
  margin: 0 auto 1.5rem;
  border: 1px solid rgba(232,232,232,.55);
  border-radius: 50%;
  font: 700 1.45rem var(--serif);
  color: white;
  box-shadow: 0 0 26px rgba(200, 241, 255, .17), inset 0 0 32px rgba(255,255,255,.08);
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 5vw, 3.6rem);
  line-height: 1.03;
}

h2 { margin: 0; font-size: clamp(1.4rem, 3vw, 2.1rem); }
h3 { margin: 0 0 .5rem; font-size: 1.05rem; }
.lead { color: var(--muted); font-size: 1.13rem; line-height: 1.65; }

.login-form { margin-top: 2rem; text-align: left; }
label { display: block; margin-bottom: .45rem; color: var(--platinum); font-weight: 700; }
.input-row { display: flex; gap: .7rem; }

input, select, button, .button-link {
  font: inherit;
  border-radius: 999px;
}

input, select {
  width: 100%;
  color: var(--silver);
  border: 1px solid rgba(232,232,232,.25);
  background: rgba(0,0,0,.28);
  padding: .9rem 1rem;
  outline: none;
}

input:focus, select:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(127,223,255,.12); }

button, .button-link {
  border: 1px solid rgba(232,232,232,.38);
  background: linear-gradient(135deg, #efefef, #aeb7b8);
  color: #07150f;
  padding: .88rem 1.25rem;
  font-weight: 800;
  cursor: pointer;
  text-decoration: none;
  white-space: nowrap;
}

button:hover, .button-link:hover { transform: translateY(-1px); filter: brightness(1.05); }
.ghost { color: var(--silver); background: rgba(255,255,255,.06); }

.session-nav { display: flex; gap: .75rem; align-items: center; flex-wrap: wrap; justify-content: flex-end; }
.session-nav span { color: var(--platinum); }

.heading-row { display: flex; justify-content: space-between; align-items: end; gap: 1rem; margin-bottom: 1.2rem; }
.legend { display: flex; gap: 1rem; flex-wrap: wrap; color: var(--muted); }
.seat { display: inline-block; width: .82rem; height: .82rem; border-radius: 50%; margin-right: .35rem; vertical-align: -.08rem; border: 1px solid var(--platinum); }
.seat.free { background: transparent; }
.seat.occupied { background: #718076; }
.seat.mine { background: var(--blue); box-shadow: 0 0 14px var(--blue-strong); }

.floor-shell { border-radius: 28px; padding: clamp(.8rem, 2vw, 1.4rem); overflow: auto; }
.floor-plan svg { min-width: 1120px; display: block; width: 100%; height: auto; }
.table-group { cursor: pointer; }
.table-hitbox { fill: transparent; pointer-events: all; }
.hall-bg { fill: rgba(255,255,255,.018); stroke: rgba(232,232,232,.08); stroke-width: 1; }
.table-body { fill: rgba(255,255,255,.015); stroke: rgba(232,232,232,.52); stroke-width: 1.7; filter: drop-shadow(0 16px 16px rgba(0,0,0,.22)); }
.table-occupied .table-body { fill: rgba(110, 123, 114, .42); stroke: rgba(232,232,232,.32); }
.table-mine .table-body { fill: rgba(92, 153, 160, .35); stroke: rgba(200,241,255,.92); filter: drop-shadow(0 0 14px rgba(127,223,255,.44)) drop-shadow(0 16px 16px rgba(0,0,0,.22)); }
.table-group:hover .table-body { stroke: var(--blue); }
.table-label { fill: var(--silver); font: 700 18px var(--serif); pointer-events: none; }
.table-meta { fill: var(--muted); font: 600 11px var(--sans); pointer-events: none; }
.chair { stroke: rgba(232,232,232,.62); stroke-width: 1.4; fill: rgba(255,255,255,.025); }
.chair.occupied { fill: #6e7b72; stroke: rgba(232,232,232,.28); }
.chair.mine { fill: var(--blue); stroke: #fff; filter: drop-shadow(0 0 9px rgba(127,223,255,.85)); }
.chair.ghost { opacity: .22; }
.aisle { fill: none; stroke: rgba(200,241,255,.24); stroke-width: 1; stroke-dasharray: 8 10; }
.aisle-label { fill: rgba(200,241,255,.68); font: 700 12px var(--sans); letter-spacing: .16em; pointer-events: none; }

.message, .error { min-height: 1.4rem; color: var(--blue); }
.error { color: var(--danger); }
.hidden { display: none !important; }

.modal-backdrop, .admin-panel {
  position: fixed;
  inset: 0;
  z-index: 40;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: rgba(1, 6, 4, .72);
  backdrop-filter: blur(10px);
}

.modal {
  width: min(520px, 100%);
  padding: 2rem;
  border-radius: 26px;
}
.modal-actions { display: flex; justify-content: flex-end; gap: .7rem; margin-top: 1.5rem; }
.occupants-card {
  margin-top: 1.2rem;
  padding: 1rem;
  border: 1px solid rgba(232,232,232,.14);
  border-radius: 18px;
  background: rgba(0,0,0,.18);
}
.occupants-card ul { list-style: none; padding: 0; margin: .7rem 0 0; display: grid; gap: .55rem; }
.occupants-card li { display: flex; justify-content: space-between; gap: 1rem; color: var(--platinum); }
.occupants-card li span { color: var(--muted); text-align: right; }
.occupants-card .empty-occupants { color: var(--muted); font-style: italic; }

.tooltip {
  position: fixed;
  z-index: 50;
  pointer-events: none;
  padding: .5rem .7rem;
  border: 1px solid var(--line);
  border-radius: .75rem;
  background: rgba(3, 8, 6, .92);
  color: var(--silver);
  box-shadow: var(--shadow);
  max-width: 240px;
}

.admin-card {
  width: min(1100px, 100%);
  max-height: 88vh;
  overflow: auto;
  padding: 1.4rem;
  border-radius: 28px;
}
.admin-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1rem; }
.admin-block { border: 1px solid var(--line); border-radius: 20px; padding: 1rem; background: rgba(0,0,0,.16); }
.manual-form { margin-top: 1rem; }
.admin-form-grid { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: .75rem; margin: .8rem 0 1rem; }
.table-wrap { margin-top: 1rem; }
table { width: 100%; border-collapse: collapse; }
th, td { padding: .65rem; border-bottom: 1px solid rgba(232,232,232,.12); text-align: left; }
th { color: var(--blue); font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; }
td input, td select { padding: .45rem .7rem; border-radius: .7rem; min-width: 6rem; }
.row-actions { display: flex; gap: .45rem; flex-wrap: wrap; }
.row-actions button { padding: .55rem .75rem; }
.danger-button { background: rgba(255, 182, 168, .12); color: var(--danger); border-color: rgba(255, 182, 168, .42); }

@media (max-width: 760px) {
  .topbar, .heading-row, .input-row { align-items: stretch; flex-direction: column; }
  .session-nav { justify-content: flex-start; }
  .admin-grid, .admin-form-grid { grid-template-columns: 1fr; }
  .hero { grid-template-columns: 1fr; margin-top: 2rem; }
  .flyer-frame img { max-height: 64vh; }
  button, .button-link { width: 100%; text-align: center; }
  .occupants-card li { flex-direction: column; gap: .1rem; }
  .occupants-card li span { text-align: left; }
}