@import url("https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;700&family=IBM+Plex+Mono:wght@400;500&display=swap");

:root {
  --bg: #08141f;
  --panel: rgba(8, 20, 31, 0.84);
  --panel-strong: rgba(6, 15, 24, 0.94);
  --line: rgba(157, 197, 228, 0.18);
  --text: #f6f7f2;
  --muted: #a1b3c5;
  --accent: #7df0c7;
  --warning: #ffbb70;
  --danger: #ff8f80;
  --shadow: 0 30px 80px rgba(0, 0, 0, 0.35);
  --radius-xl: 28px;
  --radius-lg: 22px;
  --radius-md: 16px;
  --mono: "IBM Plex Mono", monospace;
  --sans: "Space Grotesk", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
  color: var(--text);
  background:
    radial-gradient(circle at top left, rgba(125, 240, 199, 0.16), transparent 30%),
    radial-gradient(circle at bottom right, rgba(89, 155, 255, 0.18), transparent 32%),
    linear-gradient(160deg, #061019 0%, #08141f 45%, #0d2030 100%);
  font-family: var(--sans);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.025) 1px, transparent 1px);
  background-size: 30px 30px;
  mask-image: radial-gradient(circle at center, black 35%, transparent 85%);
}

body {
  position: relative;
}

h1,
h2,
p {
  margin: 0;
}

a {
  color: inherit;
}

button,
input,
textarea {
  font: inherit;
}

.landing-shell,
.chat-shell,
.admin-shell {
  width: min(1120px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 32px 0 48px;
}

.landing-shell {
  min-height: 100vh;
  display: grid;
  place-items: center;
}

.hero-card,
.panel-card,
.sidebar-card,
.thread-card,
.login-card,
.request-panel {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
  backdrop-filter: blur(16px);
}

.hero-card {
  width: min(680px, 100%);
  border-radius: var(--radius-xl);
  padding: 36px;
  display: grid;
  gap: 24px;
}

.eyebrow {
  font: 500 0.82rem/1.4 var(--mono);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
}

h1 {
  font-size: clamp(2.4rem, 5vw, 4.8rem);
  line-height: 0.98;
  letter-spacing: -0.04em;
  max-width: 12ch;
}

.hero-copy,
.muted-copy,
.feedback,
.status-banner {
  color: var(--muted);
}

.stack-form {
  display: grid;
  gap: 16px;
}

.field {
  display: grid;
  gap: 8px;
}

.field span {
  font-size: 0.92rem;
  color: var(--muted);
}

input,
textarea {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: rgba(5, 12, 19, 0.72);
  color: var(--text);
  padding: 14px 16px;
  outline: none;
}

input:focus,
textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 4px rgba(125, 240, 199, 0.14);
}

.primary-button,
.secondary-button,
.tab-button,
.icon-button {
  border: 0;
  border-radius: 999px;
  cursor: pointer;
  transition:
    transform 160ms ease,
    background 160ms ease;
}

.primary-button:hover,
.secondary-button:hover,
.tab-button:hover,
.icon-button:hover {
  transform: translateY(-1px);
}

.primary-button {
  background: linear-gradient(135deg, var(--accent), #a7ffd5);
  color: #072117;
  font-weight: 700;
  padding: 14px 20px;
}

.secondary-button,
.tab-button,
.icon-button,
.ghost-link {
  background: rgba(16, 37, 55, 0.72);
  border: 1px solid var(--line);
  color: var(--text);
  padding: 12px 18px;
  text-decoration: none;
}

.info-strip {
  display: grid;
  gap: 14px;
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.info-strip div {
  display: grid;
  gap: 6px;
  padding: 16px;
  border-radius: var(--radius-md);
  background: rgba(9, 20, 31, 0.6);
  border: 1px solid var(--line);
}

.chat-header,
.admin-header,
.panel-head,
.request-toolbar,
.admin-tabs {
  display: flex;
  gap: 16px;
  align-items: center;
  justify-content: space-between;
}

.chat-shell,
.admin-shell {
  display: grid;
  gap: 18px;
}

.status-banner,
.request-panel,
.message-list,
.composer,
.sidebar-card,
.thread-card,
.panel-card {
  border-radius: var(--radius-lg);
}

.request-toolbar {
  justify-content: flex-start;
  flex-wrap: wrap;
}

.request-panel,
.sidebar-card,
.thread-card,
.panel-card {
  padding: 22px;
}

.hidden {
  display: none !important;
}

.message-list {
  display: grid;
  gap: 14px;
  min-height: 42vh;
  max-height: 54vh;
  overflow-y: auto;
  padding: 8px 4px;
}

.message-item {
  display: grid;
  gap: 6px;
  justify-items: start;
}

.message-item.me {
  justify-items: end;
}

.bubble {
  max-width: min(78ch, 100%);
  padding: 14px 16px;
  border-radius: 18px;
  background: rgba(13, 30, 45, 0.84);
  border: 1px solid var(--line);
}

.message-item.me .bubble {
  background: rgba(38, 216, 163, 0.16);
  border-color: rgba(125, 240, 199, 0.28);
}

.message-item.system .bubble {
  background: rgba(255, 187, 112, 0.12);
  border-color: rgba(255, 187, 112, 0.28);
}

.meta {
  font: 500 0.75rem/1.4 var(--mono);
  color: var(--muted);
}

.composer {
  display: grid;
  gap: 12px;
  padding: 18px;
  background: var(--panel-strong);
  border: 1px solid var(--line);
}

.composer-main {
  display: grid;
  gap: 12px;
}

.composer-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.composer textarea {
  min-height: 60px;
  resize: vertical;
}

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

.file-button {
  display: inline-flex;
  align-items: center;
}

.chat-image {
  display: block;
  max-width: min(100%, 280px);
  border-radius: 14px;
  margin-bottom: 10px;
}

.admin-grid {
  display: grid;
  gap: 18px;
  grid-template-columns: minmax(280px, 360px) minmax(0, 1fr);
}

.client-list,
.request-list {
  display: grid;
  gap: 12px;
  max-height: 70vh;
  overflow-y: auto;
}

.client-card,
.request-card {
  width: 100%;
  text-align: left;
  padding: 16px;
  background: rgba(7, 18, 28, 0.66);
  border: 1px solid var(--line);
  border-radius: 18px;
}

.client-card.active {
  border-color: rgba(125, 240, 199, 0.5);
  background: rgba(20, 46, 60, 0.78);
}

.client-card strong,
.request-card strong {
  display: block;
  margin-bottom: 4px;
}

.small-badge,
.status-pill,
.request-status,
.message-badge {
  font: 500 0.76rem/1.3 var(--mono);
}

.small-badge,
.request-status,
.message-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
}

.message-badge.has-unread {
  color: #06271c;
  background: var(--accent);
  border-color: transparent;
}

.status-pill {
  display: grid;
  gap: 4px;
  padding: 12px 14px;
  border-radius: 18px;
  background: rgba(7, 18, 28, 0.7);
  border: 1px solid var(--line);
}

.request-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 14px;
}

.request-remark {
  margin-top: 12px;
}

.tab-panel {
  display: none;
}

.tab-panel.active {
  display: block;
}

.tab-button.active {
  background: rgba(125, 240, 199, 0.16);
  border-color: rgba(125, 240, 199, 0.34);
}

.login-overlay {
  position: fixed;
  inset: 0;
  display: grid;
  place-items: center;
  background: rgba(3, 8, 13, 0.5);
  z-index: 10;
}

.login-card {
  width: min(420px, calc(100vw - 32px));
  padding: 28px;
  border-radius: var(--radius-xl);
  display: grid;
  gap: 18px;
}

.import-result {
  margin-top: 20px;
  display: grid;
  gap: 10px;
}

.request-status.pending {
  color: #2b1b00;
  background: var(--warning);
  border-color: transparent;
}

.request-status.approved {
  color: #06271c;
  background: var(--accent);
  border-color: transparent;
}

.request-status.rejected {
  color: #34100a;
  background: var(--danger);
  border-color: transparent;
}

code {
  font-family: var(--mono);
}

@media (max-width: 900px) {
  .admin-grid {
    grid-template-columns: 1fr;
  }

  .info-strip {
    grid-template-columns: 1fr;
  }

}

@media (max-width: 640px) {
  .landing-shell,
  .chat-shell,
  .admin-shell {
    width: min(100vw - 20px, 1120px);
    padding: 20px 0 36px;
  }

  .hero-card,
  .request-panel,
  .sidebar-card,
  .thread-card,
  .panel-card {
    padding: 18px;
  }

  h1 {
    max-width: 100%;
    font-size: clamp(2rem, 10vw, 3rem);
  }
}