/* Living Water University Chat – same design as event.livingwater.education */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  /* LWU brand (from event.livingwater.education) */
  --lwu-bg: #034d66;
  --lwu-card-bg: #ffffff;
  --lwu-card-border: #e5e7eb;
  --lwu-primary: #0a7ea4;
  --lwu-primary-soft: rgba(10, 126, 164, 0.12);
  --lwu-primary-hover: #065a75;
  --lwu-accent: #0d9488;
  --lwu-text: #111827;
  --lwu-text-muted: #6b7280;
  --lwu-input-bg: #f5f7fa;
  --lwu-input-border: #e5e7eb;
  --lwu-radius-lg: 16px;
  --lwu-radius-md: 12px;
  --lwu-radius-pill: 999px;
  --lwu-shadow-soft: 0 20px 60px rgba(0, 0, 0, 0.15);
  --lwu-transition: 220ms cubic-bezier(0.21, 0.47, 0.32, 0.99);
  /* Chat-specific */
  --chat-bg: #f0f4f6;
  --chat-out: rgba(10, 126, 164, 0.15);
  --chat-out-border: rgba(10, 126, 164, 0.35);
  --chat-in: #ffffff;
  --shadow: 0 1px 3px rgba(0,0,0,.08);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--chat-bg);
  color: var(--lwu-text);
}

/* Layout: sidebar + chat area */
.app {
  display: flex;
  height: 100vh;
  max-width: 1600px;
  margin: 0 auto;
  background: var(--lwu-card-bg);
  box-shadow: var(--lwu-shadow-soft);
}

/* Left panel: conversation list */
.panel {
  width: 400px;
  min-width: 340px;
  display: flex;
  flex-direction: column;
  background: var(--lwu-card-bg);
  border-right: 1px solid var(--lwu-input-border);
}
.panel-header {
  padding: 12px 16px;
  background: var(--lwu-input-bg);
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--lwu-input-border);
}
.panel-header .brand-logo img {
  display: block;
  max-width: 100px;
  max-height: 44px;
  width: auto;
  height: auto;
  object-fit: contain;
}
.panel-header .avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--lwu-primary) 0%, var(--lwu-primary-hover) 100%);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  flex-shrink: 0;
}
.panel-header .title { flex: 1; font-size: 15px; font-weight: 600; color: var(--lwu-text); }
.panel-header .sub { font-size: 12px; color: var(--lwu-text-muted); }
.panel-header .brand-name { font-size: 11px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--lwu-primary); }
.panel-search {
  padding: 8px 12px;
  background: var(--lwu-input-bg);
}
.panel-search input {
  width: 100%;
  padding: 10px 12px 10px 36px;
  border: 1px solid var(--lwu-input-border);
  border-radius: var(--lwu-radius-pill);
  background: #fff;
  font-size: 14px;
  outline: none;
  transition: border-color var(--lwu-transition);
}
.panel-search input:focus {
  border-color: var(--lwu-primary);
  box-shadow: 0 0 0 1px var(--lwu-primary);
}
.panel-search-wrap { position: relative; }
.panel-search-wrap::before {
  content: "🔍";
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 14px;
}
.conversation-list { flex: 1; overflow-y: auto; }
.conv-item {
  display: flex;
  align-items: center;
  padding: 12px 16px;
  cursor: pointer;
  border-bottom: 1px solid var(--lwu-input-border);
  transition: background var(--lwu-transition);
}
.conv-item:hover { background: var(--lwu-input-bg); }
.conv-item.active { background: var(--lwu-primary-soft); border-left: 3px solid var(--lwu-primary); }
.conv-item .avatar {
  width: 49px;
  height: 49px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--lwu-primary) 0%, var(--lwu-primary-hover) 100%);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  margin-right: 15px;
  flex-shrink: 0;
}
.conv-item .body { flex: 1; min-width: 0; }
.conv-item .name { font-size: 15px; font-weight: 500; color: var(--lwu-text); }
.conv-item .preview { font-size: 13px; color: var(--lwu-text-muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.conv-item .meta { text-align: right; font-size: 12px; color: var(--lwu-text-muted); }
.conv-item .unread {
  background: var(--lwu-primary);
  color: #fff;
  font-size: 11px;
  padding: 2px 6px;
  border-radius: var(--lwu-radius-pill);
  margin-top: 4px;
  display: inline-block;
}

/* Right: chat area */
.chat-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  background: var(--chat-bg);
  background-image: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23e5e7eb' fill-opacity='0.5'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
}
.chat-header {
  padding: 12px 16px;
  background: var(--lwu-card-bg);
  display: flex;
  align-items: center;
  gap: 12px;
  border-left: 1px solid var(--lwu-input-border);
  box-shadow: var(--shadow);
}
.chat-header .avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--lwu-primary) 0%, var(--lwu-primary-hover) 100%);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
}
.chat-header .info { flex: 1; }
.chat-header .name { font-size: 16px; font-weight: 600; color: var(--lwu-text); }
.chat-header .status { font-size: 13px; color: var(--lwu-text-muted); }
.chat-header .status.online { color: var(--lwu-primary); }
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.msg {
  max-width: 65%;
  padding: 10px 14px;
  border-radius: var(--lwu-radius-md);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  align-items: flex-end;
}
.msg.out {
  align-self: flex-end;
  background: var(--chat-out);
  border: 1px solid var(--chat-out-border);
  border-top-right-radius: 4px;
}
.msg.in {
  align-self: flex-start;
  background: var(--chat-in);
  border: 1px solid var(--lwu-input-border);
  border-top-left-radius: 4px;
  align-items: flex-start;
}
.msg .content { font-size: 14px; word-break: break-word; color: var(--lwu-text); }
.msg .msg-img {
  display: block;
  margin-top: 6px;
  max-width: 260px;
  max-height: 260px;
  border-radius: 10px;
  object-fit: cover;
}
.msg .msg-attachment {
  display: inline-block;
  margin-top: 6px;
  padding: 6px 10px;
  background: var(--lwu-primary-soft);
  border-radius: var(--lwu-radius-md);
  color: var(--lwu-primary);
  text-decoration: none;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid rgba(10, 126, 164, 0.3);
}
.msg .msg-attachment:hover { text-decoration: underline; }
.msg .time { font-size: 11px; color: var(--lwu-text-muted); margin-top: 4px; }
.msg.in .time { align-self: flex-end; }
.chat-composer {
  padding: 12px 16px;
  background: var(--lwu-card-bg);
  border-left: 1px solid var(--lwu-input-border);
  display: flex;
  align-items: flex-end;
  gap: 10px;
}
.chat-composer textarea {
  flex: 1;
  min-height: 44px;
  max-height: 120px;
  padding: 10px 14px;
  border: 1px solid var(--lwu-input-border);
  border-radius: var(--lwu-radius-pill);
  font-size: 15px;
  font-family: inherit;
  resize: none;
  outline: none;
  background: var(--lwu-input-bg);
  color: var(--lwu-text);
  transition: border-color var(--lwu-transition);
}
.chat-composer textarea:focus {
  border-color: var(--lwu-primary);
  box-shadow: 0 0 0 1px var(--lwu-primary);
  background: #fff;
}
.chat-composer button {
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--lwu-primary) 0%, var(--lwu-primary-hover) 100%);
  color: #fff;
  cursor: pointer;
  font-size: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: transform var(--lwu-transition), box-shadow var(--lwu-transition);
}
.chat-composer button:hover { transform: translateY(-1px); box-shadow: 0 6px 20px rgba(10, 126, 164, 0.4); }
.chat-composer button:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.chat-active { display: flex; flex-direction: column; flex: 1; min-height: 0; }

/* Empty state */
.chat-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--lwu-text-muted);
  text-align: center;
  padding: 24px;
}
.chat-empty .icon { font-size: 72px; margin-bottom: 16px; opacity: 0.6; }
.chat-empty h2 { font-size: 24px; font-weight: 600; color: var(--lwu-text); margin: 0 0 8px; }
.chat-empty p { font-size: 14px; max-width: 400px; }
.chat-empty .brand-name { color: var(--lwu-primary); font-size: 13px; letter-spacing: 0.08em; margin-top: 16px; }

/* Login page – LWU gradient like event site */
.login-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0a7ea4 0%, #034d66 100%);
  padding: 24px;
}
.login-box {
  background: var(--lwu-card-bg);
  padding: 32px 36px;
  border-radius: var(--lwu-radius-lg);
  border: 1px solid var(--lwu-card-border);
  box-shadow: var(--lwu-shadow-soft);
  width: 100%;
  max-width: 420px;
}
.login-box .brand-logo { margin-bottom: 16px; }
.login-box .brand-logo img {
  display: block;
  max-width: 140px;
  max-height: 56px;
  width: auto;
  height: auto;
  object-fit: contain;
}
.login-box h1 { margin: 0 0 6px; font-size: 22px; font-weight: 700; color: var(--lwu-text); }
.login-box .brand-sub { font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; color: var(--lwu-primary); margin-bottom: 16px; }
.login-box .sub { color: var(--lwu-text-muted); margin-bottom: 20px; font-size: 14px; line-height: 1.5; }
.login-box input {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--lwu-input-border);
  border-radius: var(--lwu-radius-pill);
  font-size: 15px;
  margin-bottom: 16px;
  outline: none;
  background: var(--lwu-input-bg);
  color: var(--lwu-text);
  transition: border-color var(--lwu-transition);
}
.login-box input:focus {
  border-color: var(--lwu-primary);
  box-shadow: 0 0 0 1px var(--lwu-primary);
  background: #fff;
}
.login-box button {
  width: 100%;
  padding: 14px;
  border: none;
  border-radius: var(--lwu-radius-pill);
  background: linear-gradient(135deg, var(--lwu-primary) 0%, var(--lwu-primary-hover) 100%);
  color: #fff;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--lwu-transition), box-shadow var(--lwu-transition);
}
.login-box button:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(10, 126, 164, 0.45);
}
.login-box .error { color: #991b1b; font-size: 13px; margin-top: 10px; }

/* Subject picker */
.subject-picker { padding: 20px; }
.subject-picker h2 { font-size: 17px; font-weight: 600; color: var(--lwu-text); margin: 0 0 16px; }
.subject-list { display: flex; flex-direction: column; gap: 10px; }
.subject-list button {
  width: 100%;
  padding: 14px 16px;
  text-align: left;
  border: 1px solid var(--lwu-input-border);
  border-radius: var(--lwu-radius-md);
  background: var(--lwu-card-bg);
  font-size: 15px;
  color: var(--lwu-text);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: border-color var(--lwu-transition), background var(--lwu-transition);
}
.subject-list button:hover {
  background: var(--lwu-input-bg);
  border-color: var(--lwu-primary);
  box-shadow: 0 0 0 1px var(--lwu-primary-soft);
}
.subject-list button .icon { font-size: 22px; }

/* Admin – LWU style */
.admin-page {
  padding: 28px;
  max-width: 1200px;
  margin: 0 auto;
  min-height: 100vh;
  background: var(--chat-bg);
}
.admin-page .admin-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}
.admin-page .brand-logo img {
  max-width: 100px;
  max-height: 44px;
  object-fit: contain;
}
.admin-page h1 { margin: 0; font-size: 22px; font-weight: 700; color: var(--lwu-text); }
.admin-page .brand-sub { font-size: 12px; color: var(--lwu-text-muted); margin-top: 2px; }
.admin-nav { display: flex; gap: 10px; margin-bottom: 24px; flex-wrap: wrap; }
.admin-nav a, .admin-nav button {
  padding: 10px 18px;
  border-radius: var(--lwu-radius-pill);
  background: var(--lwu-card-bg);
  color: var(--lwu-text);
  text-decoration: none;
  border: 1px solid var(--lwu-input-border);
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
  transition: all var(--lwu-transition);
}
.admin-nav a:hover, .admin-nav button:hover {
  background: var(--lwu-input-bg);
  border-color: var(--lwu-primary);
}
.admin-nav a.active, .admin-nav button.active {
  background: linear-gradient(135deg, var(--lwu-primary) 0%, var(--lwu-primary-hover) 100%);
  color: #fff;
  border-color: transparent;
}
.admin-section {
  background: var(--lwu-card-bg);
  border-radius: var(--lwu-radius-lg);
  padding: 24px;
  margin-bottom: 24px;
  border: 1px solid var(--lwu-input-border);
  box-shadow: var(--shadow);
}
.admin-section h2 { margin: 0 0 16px; font-size: 18px; font-weight: 600; color: var(--lwu-text); }
.admin-section h3 { margin: 16px 0 8px; font-size: 14px; font-weight: 600; color: var(--lwu-text-muted); }
table { width: 100%; border-collapse: collapse; }
th, td { padding: 12px; text-align: left; border-bottom: 1px solid var(--lwu-input-border); }
th { font-weight: 600; color: var(--lwu-text-muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em; }
.btn-sm {
  padding: 8px 14px;
  font-size: 13px;
  border-radius: var(--lwu-radius-pill);
  border: none;
  cursor: pointer;
  background: linear-gradient(135deg, var(--lwu-primary) 0%, var(--lwu-primary-hover) 100%);
  color: #fff;
  font-weight: 500;
  transition: transform var(--lwu-transition);
}
.btn-sm:hover { transform: translateY(-1px); }
.btn-sm.danger { background: #991b1b; }
.btn-sm.danger:hover { background: #7f1d1d; }
.admin-section input {
  padding: 10px 14px;
  border: 1px solid var(--lwu-input-border);
  border-radius: var(--lwu-radius-pill);
  margin-right: 8px;
  background: var(--lwu-input-bg);
  font-size: 14px;
}
.admin-section input:focus {
  border-color: var(--lwu-primary);
  outline: none;
}
.report-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 16px; margin-bottom: 24px; }
.report-card {
  background: var(--lwu-input-bg);
  padding: 20px;
  border-radius: var(--lwu-radius-md);
  border: 1px solid var(--lwu-input-border);
}
.report-card .value { font-size: 28px; font-weight: 700; color: var(--lwu-primary); }
.report-card .label { font-size: 12px; color: var(--lwu-text-muted); }

.header-actions { display: flex; align-items: center; gap: 8px; }
.header-actions a, .header-actions button {
  padding: 8px 14px;
  font-size: 13px;
  border-radius: var(--lwu-radius-pill);
  background: transparent;
  color: var(--lwu-text-muted);
  text-decoration: none;
  border: 1px solid var(--lwu-input-border);
  cursor: pointer;
  font-weight: 500;
  transition: all var(--lwu-transition);
}
.header-actions a:hover, .header-actions button:hover {
  background: var(--lwu-input-bg);
  color: var(--lwu-text);
  border-color: var(--lwu-primary);
}