:root {
  --white: #fff;
  --bg: #fff;
  --bg-alt: #f8f9fa;
  --text: #202124;
  --text-secondary: #5f6368;
  --text-tertiary: #80868b;
  --border: #dadce0;
  --border-light: #e8eaed;
  --blue: #1a73e8;
  --blue-hover: #1557b0;
  --blue-bg: #e8f0fe;
  --green: #1e8e3e;
  --green-bg: #e6f4ea;
  --red: #d93025;
  --red-bg: #fce8e6;
  --yellow: #f9ab00;
  --yellow-bg: #fef7e0;
  --purple: #a142f4;
  --purple-bg: #f3e8fd;
  --shadow-1: 0 1px 2px 0 rgba(60,64,67,.3), 0 1px 3px 1px rgba(60,64,67,.15);
  --shadow-2: 0 1px 2px 0 rgba(60,64,67,.3), 0 2px 6px 2px rgba(60,64,67,.15);
}

* { margin: 0; padding: 0; box-sizing: border-box; }

body {
  font-family: 'Google Sans Text', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  font-size: 14px;
  color: var(--text);
  background: var(--bg-alt);
  -webkit-font-smoothing: antialiased;
}

/* Sidebar */
.sidebar {
  width: 240px;
  min-height: 100vh;
  background: var(--white);
  color: var(--text);
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--border);
  box-shadow: none;
  z-index: 2;
}

.sidebar a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  color: var(--text-secondary);
  text-decoration: none;
  font-family: 'Google Sans', sans-serif;
  font-size: 14px;
  font-weight: 500;
  transition: background 0.2s, color 0.15s;
  border-radius: 0 24px 24px 0;
  margin-right: 12px;
}

.sidebar a:hover {
  background: var(--bg-alt);
  color: var(--text);
}

.sidebar a.active {
  background: var(--blue-bg);
  color: var(--blue);
}

/* Layout */
.page-layout {
  display: flex;
  min-height: 100vh;
}

.page-content {
  flex: 1;
  background: var(--bg-alt);
}

.page-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  box-shadow: none;
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  z-index: 1;
  position: relative;
}

.page-main {
  padding: 24px;
}

/* Card */
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: none;
  overflow: hidden;
  transition: box-shadow 0.2s;
}

.card:hover {
  box-shadow: var(--shadow-1);
}

/* Buttons */
.btn {
  padding: 8px 16px;
  font-family: 'Google Sans', sans-serif;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  border: none;
  border-radius: 4px;
  transition: background 0.2s, box-shadow 0.2s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  letter-spacing: 0.25px;
}

.btn-primary {
  background: var(--blue);
  color: var(--white);
  height: 36px;
}

.btn-primary:hover {
  background: var(--blue-hover);
  box-shadow: var(--shadow-1);
}

.btn-secondary {
  background: var(--white);
  color: var(--blue);
  border: 1px solid var(--border);
  height: 36px;
}

.btn-secondary:hover {
  background: var(--blue-bg);
  border-color: var(--blue-bg);
}

.btn-danger {
  background: none;
  color: var(--red);
  border: 1px solid var(--red);
  padding: 6px 12px;
  font-size: 13px;
  border-radius: 4px;
}

.btn-danger:hover {
  background: var(--red-bg);
}

.btn-link {
  background: none;
  border: none;
  color: var(--blue);
  font-weight: 500;
  cursor: pointer;
  padding: 0;
  font-size: 14px;
}

.btn-link:hover {
  text-decoration: underline;
}

/* Inputs */
.input {
  width: 100%;
  padding: 10px 12px;
  border: 1px solid var(--border);
  font-size: 14px;
  box-sizing: border-box;
  background: var(--bg-alt);
  color: var(--text);
  border-radius: 8px;
  transition: border-color 0.15s, background 0.15s, box-shadow 0.15s;
}

.input:focus {
  outline: none;
  border-color: var(--blue);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(26, 115, 232, 0.15);
}

.input::placeholder {
  color: var(--text-tertiary);
}

select.input {
  appearance: auto;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 3px 8px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.02em;
  border-radius: 100px;
}

.badge-blue { background: var(--blue-bg); color: var(--blue); }
.badge-green { background: var(--green-bg); color: var(--green); }
.badge-red { background: var(--red-bg); color: var(--red); }
.badge-amber { background: var(--yellow-bg); color: #e37400; }
.badge-gray { background: #f1f3f4; color: var(--text-secondary); }

/* Tables */
table {
  width: 100%;
  border-collapse: collapse;
}

table th {
  text-align: left;
  padding: 12px 16px;
  font-size: 12px;
  font-weight: 500;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

table td {
  padding: 12px 16px;
  font-size: 14px;
  border-bottom: 1px solid var(--border-light);
}

table tr:hover {
  background: var(--bg-alt);
}

/* Stats */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
}

.stat-card {
  padding: 20px;
  border-radius: 8px;
  transition: box-shadow 0.28s cubic-bezier(.4,0,.2,1), transform 0.28s cubic-bezier(.4,0,.2,1);
}

.stat-card:hover {
  box-shadow: var(--shadow-2);
  transform: translateY(-1px);
}

.stat-card .stat-value {
  font-family: 'Google Sans', sans-serif;
  font-size: 32px;
  font-weight: 400;
  color: var(--text);
  margin-top: 4px;
  line-height: 1.2;
}

.stat-card .stat-label {
  font-family: 'Google Sans', sans-serif;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Messages */
.message-bubble {
  max-width: 75%;
  padding: 10px 14px;
  margin-bottom: 6px;
  font-size: 14px;
  line-height: 1.5;
  border-radius: 12px;
}

.message-patient {
  background: #f1f3f4;
  align-self: flex-start;
  border-radius: 12px 12px 12px 4px;
}

.message-ai {
  background: var(--blue-bg);
  border: 1px solid #c6dafc;
  align-self: flex-end;
  margin-left: auto;
  border-radius: 12px 12px 4px 12px;
}

.message-staff {
  background: var(--green-bg);
  border: 1px solid #a8dab5;
  align-self: flex-end;
  margin-left: auto;
  border-radius: 12px 12px 4px 12px;
}

/* Conversations */
.conversation-list-item {
  padding: 14px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  cursor: pointer;
  border-bottom: 1px solid var(--border-light);
  transition: background 0.15s;
  border-radius: 8px;
}

.conversation-list-item:hover {
  background: var(--bg-alt);
}

/* Tabs */
.tab-btn {
  padding: 12px 16px;
  font-family: 'Google Sans', sans-serif;
  font-size: 14px;
  font-weight: 500;
  border: none;
  background: none;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  color: var(--text-secondary);
  transition: all 0.15s;
}

.tab-btn:hover {
  color: var(--text);
}

.tab-btn.active {
  border-bottom-color: var(--blue);
  color: var(--blue);
}

/* Settings-specific */
.settings-layout {
  display: flex;
  gap: 0;
}

.settings-nav {
  width: 220px;
  background: var(--white);
  border: 1px solid var(--border);
  border-right: none;
  border-radius: 8px 0 0 8px;
  flex-shrink: 0;
}

.settings-nav a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  text-decoration: none;
  color: var(--text);
  font-size: 14px;
  font-weight: 500;
  border-bottom: 1px solid var(--border-light);
  transition: background 0.15s;
}

.settings-nav a:hover {
  background: var(--bg-alt);
}

.settings-nav a.active {
  background: var(--blue-bg);
  color: var(--blue);
  font-weight: 500;
  border-left: 3px solid var(--blue);
  padding-left: 13px;
}

.settings-body {
  flex: 1;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 0 8px 8px 0;
  min-height: 500px;
}

.settings-section {
  padding: 24px 32px;
}

.settings-section-title {
  font-family: 'Google Sans', sans-serif;
  font-size: 18px;
  font-weight: 400;
  color: var(--text);
  margin-bottom: 4px;
}

.settings-section-desc {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.5;
  margin-bottom: 24px;
}

.field-group {
  margin-bottom: 24px;
}

.field-label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text);
  margin-bottom: 4px;
}

.field-hint {
  font-size: 13px;
  color: var(--text-tertiary);
  margin-top: 6px;
  line-height: 1.4;
}

.field-example {
  font-size: 12px;
  color: var(--text-tertiary);
  margin-top: 4px;
  padding: 6px 10px;
  background: var(--bg-alt);
  border-left: 2px solid var(--border);
  font-style: italic;
  border-radius: 0 4px 4px 0;
}

.divider {
  border: none;
  border-top: 1px solid var(--border-light);
  margin: 24px 0;
}

/* Toast notification */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  background: var(--text);
  color: var(--white);
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 500;
  border-radius: 8px;
  box-shadow: var(--shadow-2);
  z-index: 9999;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.2s, transform 0.2s;
}

.toast.show {
  opacity: 1;
  transform: translateY(0);
}

/* Dashboard polish */
.stats-grid .card.stat-card {
  border: 1px solid var(--border);
}

#today-appointments > div,
#recent-conversations > a {
  transition: background 0.15s;
}

#today-appointments > div:hover {
  background: var(--bg-alt);
}

#today-appointments > div:last-child,
#recent-conversations > a:last-child {
  border-bottom: none !important;
}

#week-summary {
  font-family: 'Google Sans', sans-serif;
}

#alerts > div {
  border-radius: 8px;
  box-shadow: 0 1px 2px rgba(60,64,67,.1);
}

.page-main h2 {
  font-family: 'Google Sans', sans-serif;
  font-weight: 500 !important;
  color: var(--text) !important;
  font-size: 14px !important;
  letter-spacing: 0.1px;
}

.page-header h1 {
  font-family: 'Google Sans', sans-serif;
  font-weight: 400 !important;
  font-size: 22px !important;
  color: var(--text);
}