/* ============ Distro — student forum theme (light + dark, chat UI) ============ */

:root {
  --midnight: #14213D;
  --midnight-soft: #1E3059;
  --parchment: #FDFCF7;
  --card: #FFFFFF;
  --ink: #1B1F27;
  --ink-muted: #5B6472;
  --amber: #FCA311;
  --amber-deep: #E0900B;
  --sage: #5C8A66;
  --slate: #8D99AE;
  --border: #E7E2D6;
  --bubble-other: #FFFFFF;
  --bubble-own: #FCA311;
  --bubble-own-text: #2B1B00;
  --bubble-other-text: #1B1F27;
  --shell-bg: #F1EFE6;
  --radius-card: 10px;
  --radius-pill: 999px;
  --shadow-card: 0 1px 2px rgba(20, 33, 61, 0.06), 0 6px 16px rgba(20, 33, 61, 0.05);
  --transition-fast: 0.15s ease;
}

html[data-theme="dark"] {
  --midnight: #0B1220;
  --midnight-soft: #16233D;
  --parchment: #10141C;
  --card: #171D28;
  --ink: #E9ECF2;
  --ink-muted: #8D96A8;
  --amber: #FCA311;
  --amber-deep: #FFB733;
  --sage: #7BB989;
  --slate: #6B7688;
  --border: #262E3C;
  --bubble-other: #1F2733;
  --bubble-own: #FCA311;
  --bubble-own-text: #201200;
  --bubble-other-text: #E9ECF2;
  --shell-bg: #0B0F16;
  --shadow-card: 0 1px 2px rgba(0,0,0,0.3), 0 6px 20px rgba(0,0,0,0.35);
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--parchment);
  color: var(--ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  font-size: 15px;
  line-height: 1.5;
  transition: background-color var(--transition-fast), color var(--transition-fast);
}

h1, h2, h3, h4 {
  font-family: 'Source Serif 4', Georgia, 'Times New Roman', serif;
  font-weight: 600;
  color: var(--midnight);
  margin: 0 0 0.4em;
}
html[data-theme="dark"] h1, html[data-theme="dark"] h2, html[data-theme="dark"] h3, html[data-theme="dark"] h4 {
  color: #F4F6FA;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button, input, textarea, select { font-family: inherit; font-size: inherit; color: inherit; }

/* ---------- App shell ---------- */

.app-shell { display: flex; min-height: 100vh; background: var(--shell-bg); }

.sidebar {
  width: 248px;
  flex-shrink: 0;
  background: var(--midnight);
  color: #E8ECF4;
  padding: 22px 18px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  transition: transform 0.25s ease, background-color var(--transition-fast);
  z-index: 40;
}

.brand { display: flex; align-items: baseline; gap: 6px; }
.brand-mark { font-family: 'Source Serif 4', Georgia, serif; font-weight: 700; font-size: 22px; color: #FFFFFF; }
.brand-dot { color: var(--amber); }

.sidebar-section-label { font-size: 12px; letter-spacing: 0.02em; color: #94A2BE; margin: 4px 0 2px; }
.sidebar-nav { display: flex; flex-direction: column; gap: 2px; }

.sidebar-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 8px;
  color: #C9D2E3;
  font-size: 14px;
  transition: background-color var(--transition-fast), color var(--transition-fast), padding-left var(--transition-fast);
}
.sidebar-link:hover { background: var(--midnight-soft); color: #fff; padding-left: 14px; }
.sidebar-link.is-active { background: var(--midnight-soft); color: #fff; box-shadow: inset 3px 0 0 var(--amber); }
.sidebar-link .icon { font-size: 16px; width: 20px; text-align: center; }

.sidebar-footer { margin-top: auto; font-size: 12px; color: #6E7B98; border-top: 1px solid rgba(255,255,255,0.08); padding-top: 14px; }

.sidebar-backdrop {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 30;
  opacity: 0;
  transition: opacity 0.25s ease;
}
.sidebar-backdrop.is-visible { display: block; opacity: 1; }

/* ---------- Main column ---------- */

.main { flex: 1; min-width: 0; display: flex; flex-direction: column; }

.menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 20px;
  color: var(--ink);
  cursor: pointer;
  padding: 4px 8px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 16px 28px;
  border-bottom: 1px solid var(--border);
  background: var(--parchment);
  position: sticky;
  top: 0;
  z-index: 10;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}

.topbar-pills { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; flex: 1; min-width: 0; }

.pill {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 7px 14px;
  font-size: 13.5px;
  color: var(--ink);
  box-shadow: var(--shadow-card);
  transition: border-color var(--transition-fast), transform var(--transition-fast), background-color var(--transition-fast);
}
.pill.is-link:hover { border-color: var(--amber); transform: translateY(-1px); }
.pill .pill-label { color: var(--ink-muted); font-size: 12px; }
.pill .pill-value { font-weight: 600; }
.pill.pill-balance .pill-value { color: var(--sage); }
.pill.pill-dashboard.is-active { border-color: var(--amber); background: rgba(252,163,17,0.12); }

.theme-toggle {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 15px;
  transition: transform var(--transition-fast), border-color var(--transition-fast);
  flex-shrink: 0;
}
.theme-toggle:hover { transform: rotate(20deg); border-color: var(--amber); }
.theme-icon-light { display: none; }
html[data-theme="dark"] .theme-icon-dark { display: none; }
html[data-theme="dark"] .theme-icon-light { display: inline; }

.account-menu { position: relative; flex-shrink: 0; }

.avatar-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius-pill);
  padding: 5px 12px 5px 5px;
  cursor: pointer;
  transition: border-color var(--transition-fast);
}
.avatar-btn:hover { border-color: var(--amber); }

.avatar-circle {
  width: 30px; height: 30px; border-radius: 50%;
  background: var(--midnight); color: #fff;
  font-size: 12px; font-weight: 700;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
}
.avatar-sm { width: 26px; height: 26px; font-size: 10.5px; }

.avatar-btn .chev { color: var(--ink-muted); font-size: 10px; }

.account-dropdown {
  display: none; position: absolute; right: 0; top: calc(100% + 8px);
  background: var(--card); border: 1px solid var(--border); border-radius: 10px;
  box-shadow: var(--shadow-card); min-width: 190px; overflow: hidden; z-index: 20;
  animation: dropdownIn 0.15s ease;
}
.account-dropdown.is-open { display: block; }
@keyframes dropdownIn { from { opacity: 0; transform: translateY(-4px); } to { opacity: 1; transform: none; } }

.account-dropdown a, .account-dropdown button {
  display: block; width: 100%; text-align: left; padding: 10px 14px;
  background: none; border: none; font-size: 13.5px; cursor: pointer;
  transition: background-color var(--transition-fast);
}
.account-dropdown a:hover, .account-dropdown button:hover { background: var(--shell-bg); }
.account-dropdown .divider { height: 1px; background: var(--border); margin: 0; }
.account-dropdown .danger { color: #E0645F; }

/* ---------- Content ---------- */

.content { padding: 28px; max-width: 920px; width: 100%; margin: 0 auto; }
.content:has(.chat-page), .content:has(.dm-shell) { padding: 8px 16px; max-width: 1000px; }

.status-banner { background: rgba(92,138,102,0.12); border: 1px solid var(--sage); color: var(--sage); padding: 10px 14px; border-radius: 8px; margin-bottom: 18px; font-size: 13.5px; animation: fadeIn 0.2s ease; }
.error-banner { background: rgba(224,100,95,0.1); border: 1px solid #E0645F; color: #E0645F; padding: 10px 14px; border-radius: 8px; margin-bottom: 18px; font-size: 13.5px; }
.error-banner ul { margin: 4px 0 0; padding-left: 18px; }
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.card {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius-card);
  box-shadow: var(--shadow-card); padding: 22px;
  transition: background-color var(--transition-fast), border-color var(--transition-fast);
}
.card + .card { margin-top: 20px; }

.section-heading { display: flex; align-items: baseline; justify-content: space-between; margin-bottom: 14px; }
.section-heading p { margin: 2px 0 0; color: var(--ink-muted); font-size: 13.5px; }

.profile-row { display: flex; align-items: center; gap: 16px; }
.profile-row .avatar-circle { width: 54px; height: 54px; font-size: 18px; }
.profile-meta { flex: 1; }
.profile-meta .name { font-family: 'Source Serif 4', Georgia, serif; font-size: 19px; font-weight: 600; color: var(--midnight); }
html[data-theme="dark"] .profile-meta .name { color: #F4F6FA; }
.profile-meta .meta-line { color: var(--ink-muted); font-size: 13px; margin-top: 2px; }

.btn {
  display: inline-flex; align-items: center; gap: 6px; border-radius: 8px; padding: 9px 16px;
  font-size: 13.5px; font-weight: 600; border: 1px solid transparent; cursor: pointer;
  transition: background-color var(--transition-fast), border-color var(--transition-fast), transform 0.08s ease;
}
.btn-primary { background: var(--amber); color: #2B1B00; }
.btn-primary:hover { background: var(--amber-deep); transform: translateY(-1px); }
.btn-outline { background: transparent; border-color: var(--border); color: var(--ink); }
.btn-outline:hover { border-color: var(--amber); transform: translateY(-1px); }
.btn-quiet { background: transparent; color: var(--ink-muted); border: none; padding: 6px 10px; }
.btn-quiet:hover { color: var(--ink); }
.btn:active { transform: translateY(1px); }
.btn-sm { padding: 6px 12px; font-size: 12.5px; }

/* Groups grid */

.group-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 14px; }
.group-card {
  border: 1px solid var(--border); border-radius: var(--radius-card); padding: 16px; background: var(--card);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast), transform var(--transition-fast);
}
.group-card:hover { border-color: var(--amber); box-shadow: var(--shadow-card); transform: translateY(-2px); }
.group-card .group-icon { font-size: 22px; }
.group-card .group-name { font-family: 'Source Serif 4', Georgia, serif; font-weight: 600; font-size: 16px; margin: 8px 0 4px; color: var(--midnight); }
html[data-theme="dark"] .group-card .group-name { color: #F4F6FA; }
.group-card .group-desc { color: var(--ink-muted); font-size: 12.5px; min-height: 34px; }
.group-card .group-foot { display: flex; align-items: center; justify-content: space-between; margin-top: 12px; }
.group-card .member-count { font-size: 12px; color: var(--slate); }

.empty-state { text-align: center; padding: 40px 20px; color: var(--ink-muted); }
.empty-state .empty-icon { font-size: 30px; margin-bottom: 8px; }

/* ---------- Chat UI (group chat + DMs) shared ---------- */

.chat-page {
  display: flex;
  flex-direction: column;
  height: calc(100vh - 69px);
  max-width: 760px;
  margin: 0 auto;
  padding: 0 4px;
}

.chat-page-head, .dm-chat-head {
  display: flex; align-items: center; justify-content: space-between; gap: 10px;
  padding: 14px 6px; border-bottom: 1px solid var(--border);
}
.chat-page-head h1 { font-size: 20px; display: flex; align-items: center; gap: 8px; margin: 0; }
.chat-page-head .group-desc { color: var(--ink-muted); font-size: 13px; margin-top: 2px; }

.chat-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 16px 6px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  scroll-behavior: smooth;
}

.msg-row {
  display: flex;
  align-items: flex-end;
  gap: 8px;
  max-width: 100%;
  animation: bubbleIn 0.18s ease;
}
.msg-row.is-own { flex-direction: row-reverse; }
@keyframes bubbleIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }

.msg-bubble {
  max-width: 68%;
  padding: 9px 13px 7px;
  border-radius: 16px;
  position: relative;
  box-shadow: var(--shadow-card);
  transition: background-color var(--transition-fast);
}
.msg-bubble.is-other { background: var(--bubble-other); color: var(--bubble-other-text); border-bottom-left-radius: 4px; }
.msg-bubble.is-own { background: var(--bubble-own); color: var(--bubble-own-text); border-bottom-right-radius: 4px; }

.msg-author { font-size: 12px; font-weight: 700; color: var(--amber-deep); margin-bottom: 2px; }
.msg-text { font-size: 14.5px; white-space: pre-wrap; word-break: break-word; }
.msg-time { font-size: 10.5px; opacity: 0.65; text-align: right; margin-top: 3px; }

.msg-quote {
  display: block;
  border-left: 3px solid var(--amber);
  background: rgba(0,0,0,0.06);
  border-radius: 6px;
  padding: 5px 8px;
  margin-bottom: 6px;
  font-size: 12.5px;
}
.msg-quote-author { font-weight: 700; display: block; }
.msg-quote-text { opacity: 0.8; }

.msg-reply-btn {
  background: none; border: none; cursor: pointer; font-size: 15px; color: var(--ink-muted);
  opacity: 0; transition: opacity var(--transition-fast), color var(--transition-fast);
  padding: 4px;
}
.msg-row:hover .msg-reply-btn { opacity: 1; }
.msg-reply-btn:hover { color: var(--amber-deep); }

.attachments { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 6px; }
.attachment-image { width: 160px; height: 120px; object-fit: cover; border-radius: 10px; }
.attachment-file {
  display: flex; align-items: center; gap: 6px; border: 1px solid var(--border); border-radius: 8px;
  padding: 8px 12px; font-size: 12.5px; color: var(--ink-muted); background: var(--card);
}

.reply-preview-bar {
  display: flex; align-items: center; justify-content: space-between;
  background: var(--card); border: 1px solid var(--border); border-left: 3px solid var(--amber);
  border-radius: 8px; padding: 8px 12px; margin: 0 6px 8px; font-size: 13px;
  animation: fadeIn 0.15s ease;
}
.reply-preview-cancel { background: none; border: none; cursor: pointer; color: var(--ink-muted); font-size: 14px; }

.chat-composer {
  display: flex; align-items: flex-end; gap: 8px; padding: 10px 6px 16px;
  border-top: 1px solid var(--border);
}
.chat-input {
  flex: 1; border: 1px solid var(--border); border-radius: 18px; padding: 10px 16px;
  resize: none; max-height: 140px; background: var(--card); transition: border-color var(--transition-fast);
}
.chat-input:focus { outline: none; border-color: var(--amber); }
.chat-attach-btn, .chat-send-btn {
  width: 40px; height: 40px; border-radius: 50%; border: 1px solid var(--border);
  background: var(--card); display: flex; align-items: center; justify-content: center;
  cursor: pointer; font-size: 16px; flex-shrink: 0; transition: transform var(--transition-fast), background-color var(--transition-fast);
}
.chat-attach-btn:hover { transform: scale(1.08); }
.chat-send-btn { background: var(--amber); color: #2B1B00; border-color: var(--amber); }
.chat-send-btn:hover { transform: scale(1.08); background: var(--amber-deep); }

.chat-join-prompt { text-align: center; padding: 16px; color: var(--ink-muted); font-size: 13.5px; border-top: 1px solid var(--border); }

/* ---------- Direct messages layout ---------- */

.dm-shell {
  display: flex;
  height: calc(100vh - 69px);
  max-width: 1000px;
  margin: 0 auto;
  border: 1px solid var(--border);
  border-radius: var(--radius-card);
  overflow: hidden;
  background: var(--card);
}
.dm-contacts { width: 260px; flex-shrink: 0; border-right: 1px solid var(--border); overflow-y: auto; }
.dm-contacts-head { padding: 14px 16px; font-weight: 700; font-size: 13px; color: var(--ink-muted); border-bottom: 1px solid var(--border); }
.dm-contact {
  display: flex; align-items: center; gap: 10px; padding: 10px 14px;
  border-bottom: 1px solid var(--border); transition: background-color var(--transition-fast);
}
.dm-contact:hover { background: var(--shell-bg); }
.dm-contact.is-active { background: rgba(252,163,17,0.12); }
.dm-contact-meta { min-width: 0; }
.dm-contact-name { font-weight: 600; font-size: 13.5px; display: block; }
.dm-contact-preview { font-size: 12px; color: var(--ink-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; display: block; max-width: 170px; }

.dm-chat { flex: 1; display: flex; flex-direction: column; min-width: 0; }
.dm-chat-name { font-weight: 700; font-size: 14.5px; }
.dm-chat-sub { font-size: 12px; color: var(--ink-muted); }

/* ---------- Forms (auth + settings) ---------- */

.auth-shell { min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--midnight); padding: 20px; }
.auth-card { background: var(--parchment); border-radius: 14px; padding: 34px; width: 100%; max-width: 380px; box-shadow: 0 20px 60px rgba(0,0,0,0.35); }
.auth-card .brand { justify-content: center; margin-bottom: 4px; }
.auth-card h1 { text-align: center; font-size: 21px; }
.auth-card .subtitle { text-align: center; color: var(--ink-muted); font-size: 13px; margin-bottom: 20px; }

.field { margin-bottom: 14px; }
.field label { display: block; font-size: 12.5px; color: var(--ink-muted); margin-bottom: 5px; }
.field input, .field textarea {
  width: 100%; border: 1px solid var(--border); border-radius: 8px; padding: 9px 11px; background: var(--card);
  transition: border-color var(--transition-fast);
}
.field input:focus, .field textarea:focus, .composer textarea:focus { outline: none; border-color: var(--amber); }
.field-error { color: #E0645F; font-size: 12px; margin-top: 4px; }
.auth-foot { text-align: center; font-size: 13px; color: var(--ink-muted); margin-top: 16px; }
.settings-grid { display: grid; gap: 20px; }

/* ---------- Admin panel ---------- */

.admin-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 12px; }
.stat-box { background: var(--shell-bg); border-radius: 10px; padding: 14px; text-align: center; }
.stat-num { font-family: 'Source Serif 4', Georgia, serif; font-size: 24px; font-weight: 700; color: var(--midnight); }
html[data-theme="dark"] .stat-num { color: #F4F6FA; }
.stat-label { font-size: 12px; color: var(--ink-muted); margin-top: 2px; }

.admin-table-wrap { overflow-x: auto; margin-top: 12px; }
.admin-table { width: 100%; border-collapse: collapse; font-size: 13px; }
.admin-table th { text-align: left; color: var(--ink-muted); font-weight: 600; padding: 8px 10px; border-bottom: 1px solid var(--border); font-size: 12px; }
.admin-table td { padding: 8px 10px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.admin-table tr:hover td { background: var(--shell-bg); }
.admin-user-cell { display: flex; align-items: center; gap: 8px; white-space: nowrap; }
.admin-balance-input { width: 80px; border: 1px solid var(--border); border-radius: 6px; padding: 5px 8px; background: var(--card); }
.inline-form { display: flex; align-items: center; gap: 6px; }
.badge { display: inline-flex; padding: 4px 10px; border-radius: var(--radius-pill); font-size: 11.5px; font-weight: 700; border: none; cursor: pointer; }
.badge-admin { background: rgba(252,163,17,0.18); color: var(--amber-deep); }
.badge-muted { background: var(--shell-bg); color: var(--ink-muted); }
.admin-inline-create { display: flex; gap: 8px; margin-bottom: 10px; flex-wrap: wrap; }
.admin-inline-create input[type=text] { border: 1px solid var(--border); border-radius: 8px; padding: 8px 10px; background: var(--card); }
.admin-icon-input { width: 56px; text-align: center; }

/* ---------- Responsive ---------- */

@media (max-width: 860px) {
  .menu-btn { display: block; }
  .sidebar {
    position: fixed; top: 0; left: 0; bottom: 0;
    transform: translateX(-100%);
  }
  .sidebar.is-open { transform: translateX(0); }
  .content { padding: 16px; }
  .topbar { padding: 10px 14px; }
  .topbar-pills .pill-label { display: none; }
  .dm-shell { flex-direction: column; height: calc(100vh - 69px); }
  .dm-contacts { width: 100%; max-height: 160px; border-right: none; border-bottom: 1px solid var(--border); }
  .msg-bubble { max-width: 82%; }
  .admin-inline-create { flex-direction: column; }
  .chat-page { height: calc(100vh - 60px); }
}

@media (max-width: 480px) {
  .attachment-image { width: 120px; height: 90px; }
  .auth-card { padding: 24px; }
}