/* ============================
   style.css – ZUC Premium Medical UI (Redesigned)
   ============================ */

:root {
  /* === Core Brand Colors (unchanged) === */
  --primary: #1a5276;
  --primary-dark: #0d3449;
  --primary-med: #1d6a99;
  --primary-light: #2980b9;
  --primary-lighter: #ebf5fb;
  --primary-gradient: linear-gradient(135deg, #1a5276 0%, #2980b9 100%);
  --primary-glow: 0 4px 14px rgba(26, 82, 118, 0.28);

  /* === Backgrounds & Surfaces (refined) === */
  --bg: #f1f5f9;
  --bg-alt: #e6edf4;
  --surface: #ffffff;
  --surface-elevated: #ffffff;
  --surface-highlight: #f0f6fd;

  /* === Text (unchanged) === */
  --text: #1e2b3c;
  --text-secondary: #2c3e50;
  --text-light: #5d6d7e;
  --text-muted: #8898aa;

  /* === Borders & Dividers (subtle refinement) === */
  --border: #dce0e6;
  --border-light: #e9edf2;
  --border-focus: var(--primary-light);
  --border-radius: 10px;

  /* === Status Colors (unchanged) === */
  --success: #27ae60;
  --success-light: #e6f7ee;
  --warning: #f39c12;
  --warning-light: #fef8e7;
  --danger: #e74c3c;
  --danger-light: #ffebea;

  /* === Shadows (modern layered) === */
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow: 0 2px 8px rgba(0,0,0,0.06);
  --shadow-hover: 0 8px 24px rgba(0,0,0,0.09);
  --shadow-card: 0 4px 14px rgba(0,0,0,0.06);
  --shadow-button: 0 3px 8px rgba(26,82,118,0.15);

  /* === Radii (slightly increased for modern feel) === */
  --radius: 8px;
  --radius-sm: 4px;
  --radius-lg: 16px;
  --radius-xl: 20px;

  /* === Typography (unchanged) === */
  --font: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', sans-serif;

  /* === Transitions (unchanged) === */
  --transition-fast: 0.15s ease;
  --transition: 0.2s ease;
  --transition-smooth: 0.3s cubic-bezier(0.4, 0, 0.2, 1);

  /* === Misc (unchanged) === */
  --focus-ring: 0 0 0 3px rgba(41,128,185,0.18);

  /* === NEW: Modern Medical Accents === */
  --glass-bg: rgba(255,255,255,0.75);
  --glass-border: rgba(255,255,255,0.4);
  --glass-shadow: 0 8px 32px rgba(0,0,0,0.08);
  --status-bg: rgba(15, 30, 45, 0.92);
  --status-blur: 12px;
  --sidebar-gradient: linear-gradient(180deg, #0a2537 0%, #1a5276 100%);
  --sidebar-active-bg: rgba(255,255,255,0.12);
  --sidebar-hover-bg: rgba(255,255,255,0.06);
  --scrollbar-thumb: #b0bec5;
  --scrollbar-track: #eef2f7;
}

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

html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  height: 100%;
  overflow-x: hidden;
}

/* Custom Scrollbar (WebKit) */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}
::-webkit-scrollbar-track {
  background: var(--scrollbar-track);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb {
  background: var(--scrollbar-thumb);
  border-radius: 10px;
}
::-webkit-scrollbar-thumb:hover {
  background: #90a4ae;
}

/* Typography refinement */
h1, h2, h3, h4 {
  font-weight: 600;
  letter-spacing: -0.02em;
}
p {
  color: var(--text-light);
  font-size: 0.9rem;
}

a {
  color: var(--primary-light);
  text-decoration: none;
  transition: color var(--transition-fast);
}
a:hover {
  color: var(--primary-med);
}

/* ============================
   Global Entrance Animation
   ============================ */
@keyframes fadeSlideUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

.report-header,
.patient-section,
.dynamic-form,
.impression-section,
.action-buttons,
.history-panel.active {
  animation: fadeSlideUp 0.45s ease-out both;
}
.report-header { animation-delay: 0s; }
.patient-section { animation-delay: 0.05s; }
.dynamic-form { animation-delay: 0.1s; }
.impression-section { animation-delay: 0.15s; }
.action-buttons { animation-delay: 0.2s; }

/* ============================
   Buttons – Medical Grade
   ============================ */
button {
  cursor: pointer;
  font-family: inherit;
  border: none;
  border-radius: var(--radius);
  padding: 10px 20px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: all var(--transition-smooth);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
  will-change: transform;
  letter-spacing: -0.01em;
  line-height: 1.4;
  background: #fff;
  color: var(--text);
  border: 1px solid var(--border);
}

button:active {
  transform: scale(0.97);
}

button.btn-primary {
  background: var(--primary-gradient);
  color: #fff;
  border: none;
  box-shadow: var(--shadow-button);
}
button.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--primary-glow);
  background: linear-gradient(135deg, #1d6a99 0%, #3498db 100%);
}
button.btn-primary:active {
  transform: scale(0.98);
}

button.btn-secondary {
  background: var(--border-light);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}
button.btn-secondary:hover {
  background: #dde2e8;
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

button.btn-success {
  background: var(--success);
  color: #fff;
  border: none;
  box-shadow: 0 3px 8px rgba(39,174,96,0.2);
}
button.btn-success:hover {
  background: #219a52;
  box-shadow: 0 5px 14px rgba(39,174,96,0.3);
}

button.btn-warning {
  background: var(--warning);
  color: #fff;
  border: none;
  box-shadow: 0 3px 8px rgba(243,156,18,0.2);
}
button.btn-warning:hover {
  background: #d68910;
  box-shadow: 0 5px 14px rgba(243,156,18,0.3);
}

button.btn-danger {
  background: var(--danger);
  color: #fff;
  border: none;
  box-shadow: 0 3px 8px rgba(231,76,60,0.2);
}
button.btn-danger:hover {
  background: #c0392b;
  box-shadow: 0 5px 14px rgba(231,76,60,0.3);
}

button.btn-sm {
  padding: 7px 14px;
  font-size: 0.85rem;
}
button.btn-xs {
  padding: 4px 10px;
  font-size: 0.75rem;
  border-radius: var(--radius-sm);
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
  background: #e9ecef;
  color: #6c757d;
  border-color: #dee2e6;
}

/* ============================
   Focus & Accessibility
   ============================ */
:focus-visible {
  outline: 2px solid var(--primary-light);
  outline-offset: 2px;
  border-radius: 4px;
}

input:focus-visible,
select:focus-visible,
textarea:focus-visible,
button:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* ============================
   Inputs & Form Controls
   ============================ */
input, select, textarea {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: inherit;
  font-size: 0.95rem;
  background: #fff;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  color: var(--text);
  line-height: 1.5;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary-light);
  box-shadow: var(--focus-ring);
}

input.invalid, select.invalid, textarea.invalid {
  border-color: var(--danger);
  background: var(--danger-light);
}

input[readonly] {
  background: #f8f9fa;
  color: var(--text-light);
  border-color: var(--border-light);
}

label {
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  display: block;
  color: var(--text-secondary);
  letter-spacing: -0.01em;
}

/* Radio / Checkbox accent color */
input[type="radio"],
input[type="checkbox"] {
  accent-color: var(--primary);
}

/* ============================
   Badges
   ============================ */
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  transition: all var(--transition);
  line-height: 1.4;
}
.badge-draft {
  background: var(--warning-light);
  color: #856404;
  border: 1px solid #ffc107;
}
.badge-final {
  background: var(--success-light);
  color: #155724;
  border: 1px solid #28a745;
}

/* ============================
   Print Helpers
   ============================ */
.print-visible-only { display: none; }
@media print {
  .print-visible-only { display: block !important; }
}

/* ============================
   Status Indicators
   ============================ */
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(46,204,113,0.4); }
  70% { box-shadow: 0 0 0 8px rgba(46,204,113,0); }
  100% { box-shadow: 0 0 0 0 rgba(46,204,113,0); }
}
#sync-status .online-pulse {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #2ecc71;
  animation: pulse 2s infinite;
  margin-right: 8px;
  vertical-align: middle;
}
.offline-dot {
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: #e74c3c;
  margin-right: 8px;
  vertical-align: middle;
}