:root {
  /* Warm Executive Light Palette */
  --bg-body: #f8fafc;
  --surface-card: #ffffff;
  --surface-subtle: #f1f5f9;
  --border-card: #e2e8f0;
  --border-focus: #d97706;

  /* Typography */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;

  /* Studio Gold & Accents */
  --brand-gold: #b45309;
  --brand-gold-hover: #92400e;
  --brand-gold-soft: #fef3c7;
  --brand-gold-text: #92400e;

  /* Feedback Colors */
  --status-success: #15803d;
  --status-success-bg: #dcfce7;
  --status-danger: #b91c1c;
  --status-danger-bg: #fee2e2;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--bg-body);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  color: var(--text-primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* Fluid responsive container */
.app-shell {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 16px;
}

@media (min-width: 768px) {
  .app-shell {
    padding: 32px 24px;
  }
}

/* Cards & Surfaces */
.card-executive {
  background: var(--surface-card);
  border: 1px solid var(--border-card);
  border-radius: 14px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

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

/* Form Elements & Inputs */
.form-label {
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 0.875rem;
  margin-bottom: 6px;
}

.form-control, .form-select {
  background-color: #ffffff !important;
  border: 1px solid #cbd5e1 !important;
  color: var(--text-primary) !important;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 0.95rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.form-control::placeholder {
  color: var(--text-muted) !important;
}

.form-control:focus, .form-select:focus {
  border-color: var(--border-focus) !important;
  box-shadow: 0 0 0 3px rgba(217, 119, 6, 0.18) !important;
  outline: none;
}

.input-group-text {
  background-color: var(--surface-subtle) !important;
  border: 1px solid #cbd5e1 !important;
  color: var(--text-muted) !important;
}

/* Action Buttons */
.btn-gold {
  background-color: var(--brand-gold);
  border: 1px solid var(--brand-gold);
  color: #ffffff !important;
  font-weight: 600;
  border-radius: 8px;
  padding: 10px 18px;
  transition: all 0.15s ease;
}

.btn-gold:hover {
  background-color: var(--brand-gold-hover);
  border-color: var(--brand-gold-hover);
  box-shadow: var(--shadow-sm);
}

.btn-outline-gold {
  background-color: transparent;
  border: 1px solid var(--brand-gold);
  color: var(--brand-gold) !important;
  font-weight: 600;
  border-radius: 8px;
  padding: 8px 16px;
}

.btn-outline-gold:hover {
  background-color: var(--brand-gold-soft);
}

/* Badges & Accents */
.badge-gold {
  background-color: var(--brand-gold-soft);
  color: var(--brand-gold-text);
  font-weight: 600;
  border: 1px solid rgba(180, 83, 9, 0.2);
  border-radius: 20px;
  padding: 4px 12px;
  font-size: 0.75rem;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

/* Top Navigation Bar */
.top-navbar {
  background: #ffffff;
  border-bottom: 1px solid var(--border-card);
  padding: 12px 20px;
  margin-bottom: 24px;
  border-radius: 12px;
}