/* ============================================
   ReservaFlow Design Tokens
   Generado desde BRAND.md — ver para la spec completa
   ============================================ */

:root {

  /* === COLORES PRIMARIOS (Azul Reserva) === */
  --color-brand:          #3B6FE8;
  --color-brand-dark:     #1E4DD6;
  --color-brand-darker:   #1A3FB5;
  --color-brand-light:    #EEF4FF;
  --color-brand-mid:      #BFCFFB;

  /* === ACENTO (Verde Flow) === */
  --color-accent:         #10B981;
  --color-accent-dark:    #059669;
  --color-accent-light:   #D1FAE5;
  --color-accent-mid:     #6EE7B7;

  /* === SEMÁNTICOS === */
  --color-success:        #22C55E;
  --color-success-bg:     #F0FDF4;
  --color-warning:        #F59E0B;
  --color-warning-bg:     #FFFBEB;
  --color-error:          #EF4444;
  --color-error-bg:       #FEF2F2;
  --color-info:           #3B82F6;
  --color-info-bg:        #EFF6FF;

  /* === NEUTRALES === */
  --color-neutral-950:    #0A0F1E;
  --color-neutral-900:    #111827;
  --color-neutral-800:    #1F2937;
  --color-neutral-700:    #374151;
  --color-neutral-600:    #4B5563;
  --color-neutral-500:    #6B7280;
  --color-neutral-400:    #9CA3AF;
  --color-neutral-300:    #D1D5DB;
  --color-neutral-200:    #E5E7EB;
  --color-neutral-100:    #F3F4F6;
  --color-neutral-50:     #F9FAFB;
  --color-white:          #FFFFFF;

  /* === TIPOGRAFÍA === */
  --font-sans:    'Inter', ui-sans-serif, system-ui, -apple-system,
                  BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, 'Cascadia Code',
                  'Fira Code', monospace;

  --text-display: 3rem;
  --text-h1:      2.25rem;
  --text-h2:      1.75rem;
  --text-h3:      1.375rem;
  --text-h4:      1.125rem;
  --text-body-lg: 1.125rem;
  --text-body:    1rem;
  --text-body-sm: 0.875rem;
  --text-caption: 0.75rem;
  --text-label:   0.75rem;

  --fw-regular:   400;
  --fw-medium:    500;
  --fw-semibold:  600;
  --fw-bold:      700;

  --lh-tight:     1.2;
  --lh-snug:      1.35;
  --lh-normal:    1.5;
  --lh-relaxed:   1.6;

  /* === ESPACIADO (base 4px) === */
  --space-1:  4px;
  --space-2:  8px;
  --space-3:  12px;
  --space-4:  16px;
  --space-5:  20px;
  --space-6:  24px;
  --space-8:  32px;
  --space-10: 40px;
  --space-12: 48px;
  --space-16: 64px;
  --space-20: 80px;
  --space-24: 96px;

  /* === BORDER RADIUS === */
  --radius-none: 0;
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-2xl:  24px;
  --radius-full: 9999px;

  /* === BORDES === */
  --border-default: 1px solid var(--color-neutral-200);
  --border-strong:  1px solid var(--color-neutral-300);
  --border-focus:   2px solid var(--color-brand);
  --border-error:   1px solid var(--color-error);
  --border-success: 1px solid var(--color-success);

  /* === SOMBRAS === */
  --shadow-xs:    0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-sm:    0 1px 3px rgba(0, 0, 0, 0.10), 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md:    0 4px 12px rgba(0, 0, 0, 0.10), 0 2px 6px rgba(0, 0, 0, 0.06);
  --shadow-lg:    0 10px 24px rgba(0, 0, 0, 0.12), 0 4px 8px rgba(0, 0, 0, 0.06);
  --shadow-xl:    0 20px 48px rgba(0, 0, 0, 0.14), 0 8px 16px rgba(0, 0, 0, 0.08);
  --shadow-brand: 0 4px 16px rgba(59, 111, 232, 0.25);

  /* === MOTION === */
  --motion-fast:   150ms ease-out;
  --motion-normal: 250ms ease-in-out;
  --motion-slow:   350ms cubic-bezier(0.34, 1.56, 0.64, 1);
  --motion-page:   200ms ease-out;

  /* === LAYOUT === */
  --sidebar-width:           240px;
  --sidebar-collapsed-width: 64px;
  --navbar-height:           64px;
  --content-max-width:       1200px;
  --wizard-max-width:        560px;
  --landing-max-width:       1280px;
}

/* === RESET BASE === */
*, *::before, *::after {
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-sans);
  font-size: var(--text-body);
  line-height: var(--lh-relaxed);
  color: var(--color-neutral-800);
  background-color: var(--color-neutral-50);
  margin: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* === FOCUS GLOBAL (nunca remover) === */
:focus-visible {
  outline: 2px solid var(--color-brand);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* === REDUCED MOTION === */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

/* === UTILIDADES BASE === */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* === TIPOGRAFÍA === */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-neutral-900);
  line-height: var(--lh-tight);
  font-weight: var(--fw-bold);
  margin: 0 0 var(--space-4);
}

h1 { font-size: var(--text-h1); }
h2 { font-size: var(--text-h2); font-weight: var(--fw-semibold); line-height: var(--lh-snug); }
h3 { font-size: var(--text-h3); font-weight: var(--fw-semibold); line-height: var(--lh-snug); }
h4 { font-size: var(--text-h4); font-weight: var(--fw-semibold); }

p {
  margin: 0 0 var(--space-4);
  color: var(--color-neutral-700);
}

a {
  color: var(--color-brand);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: color var(--motion-fast);
}

a:hover {
  color: var(--color-brand-dark);
}

/* === BOTONES === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: 10px var(--space-5);
  font-family: var(--font-sans);
  font-size: var(--text-body-sm);
  font-weight: var(--fw-semibold);
  line-height: 1;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background-color var(--motion-fast),
              border-color var(--motion-fast),
              color var(--motion-fast),
              box-shadow var(--motion-fast);
  white-space: nowrap;
  user-select: none;
}

.btn:disabled,
.btn[aria-disabled="true"] {
  cursor: not-allowed;
  opacity: 0.5;
}

/* Primary */
.btn-primary {
  background-color: var(--color-brand);
  color: var(--color-white);
  border-color: var(--color-brand);
}
.btn-primary:hover:not(:disabled) {
  background-color: var(--color-brand-dark);
  border-color: var(--color-brand-dark);
  box-shadow: var(--shadow-brand);
}
.btn-primary:active:not(:disabled) {
  background-color: var(--color-brand-darker);
}

/* Secondary */
.btn-secondary {
  background-color: var(--color-white);
  color: var(--color-neutral-800);
  border-color: var(--color-neutral-300);
}
.btn-secondary:hover:not(:disabled) {
  background-color: var(--color-neutral-50);
  border-color: var(--color-neutral-400);
}

/* Ghost */
.btn-ghost {
  background-color: transparent;
  color: var(--color-neutral-700);
  border-color: transparent;
}
.btn-ghost:hover:not(:disabled) {
  background-color: var(--color-neutral-100);
}

/* Danger */
.btn-danger {
  background-color: var(--color-error);
  color: var(--color-white);
  border-color: var(--color-error);
}
.btn-danger:hover:not(:disabled) {
  background-color: #DC2626;
}

/* Sizes */
.btn-sm { padding: 6px 12px; font-size: 13px; }
.btn-lg { padding: 14px var(--space-5); font-size: var(--text-body); }
.btn-block { width: 100%; }

/* === INPUTS === */
.form-label {
  display: block;
  font-size: var(--text-label);
  font-weight: var(--fw-semibold);
  color: var(--color-neutral-700);
  margin-bottom: var(--space-1);
  letter-spacing: 0.01em;
}

.form-input,
.form-select,
.form-textarea {
  display: block;
  width: 100%;
  padding: 10px 12px;
  font-family: var(--font-sans);
  font-size: var(--text-body);
  color: var(--color-neutral-800);
  background-color: var(--color-white);
  border: var(--border-default);
  border-radius: var(--radius-md);
  transition: border-color var(--motion-fast), box-shadow var(--motion-fast);
  appearance: none;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--color-neutral-500);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-brand);
  box-shadow: 0 0 0 3px rgba(59, 111, 232, 0.15);
}

.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled {
  background-color: var(--color-neutral-100);
  color: var(--color-neutral-400);
  cursor: not-allowed;
}

.form-input.error,
.form-select.error,
.form-textarea.error {
  border-color: var(--color-error);
}

.form-error {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  margin-top: var(--space-1);
  font-size: var(--text-body-sm);
  color: var(--color-error);
}

.form-help {
  margin-top: var(--space-1);
  font-size: var(--text-body-sm);
  color: var(--color-neutral-500);
}

.form-group {
  margin-bottom: var(--space-5);
}

/* === CARDS === */
.card {
  background-color: var(--color-white);
  border: var(--border-default);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: var(--space-6);
}

.card-hover {
  transition: box-shadow var(--motion-normal), transform var(--motion-normal);
  cursor: pointer;
}

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

/* === BADGES === */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px var(--space-2);
  font-size: var(--text-label);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-full);
  line-height: 1.4;
  white-space: nowrap;
}

.badge-success  { background-color: var(--color-accent-light);  color: var(--color-accent-dark); }
.badge-warning  { background-color: var(--color-warning-bg);    color: #D97706; }
.badge-error    { background-color: var(--color-error-bg);      color: var(--color-error); }
.badge-info     { background-color: var(--color-info-bg);       color: var(--color-info); }
.badge-brand    { background-color: var(--color-brand);         color: var(--color-white); }
.badge-neutral  { background-color: var(--color-neutral-100);   color: var(--color-neutral-600); }

/* === ALERTAS === */
.alert {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-body-sm);
  border: 1px solid transparent;
}

.alert-success  { background-color: var(--color-success-bg); color: #166534; border-color: var(--color-accent-mid); }
.alert-warning  { background-color: var(--color-warning-bg); color: #92400E; border-color: #FCD34D; }
.alert-error    { background-color: var(--color-error-bg);   color: #991B1B; border-color: #FCA5A5; }
.alert-info     { background-color: var(--color-info-bg);    color: #1E40AF; border-color: #BFDBFE; }

/* === DIVIDER === */
.divider {
  border: none;
  border-top: var(--border-default);
  margin: var(--space-6) 0;
}

/* === LAYOUT — ADMIN PANEL === */
.layout-admin {
  display: flex;
  min-height: 100vh;
}

.layout-sidebar {
  width: var(--sidebar-width);
  min-height: 100vh;
  background-color: var(--color-white);
  border-right: var(--border-default);
  box-shadow: var(--shadow-xs);
  flex-shrink: 0;
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  overflow-y: auto;
  z-index: 40;
}

.layout-main {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.layout-navbar {
  height: var(--navbar-height);
  background-color: var(--color-white);
  border-bottom: var(--border-default);
  box-shadow: var(--shadow-xs);
  position: sticky;
  top: 0;
  z-index: 30;
  display: flex;
  align-items: center;
  padding: 0 var(--space-8);
}

.layout-content {
  padding: var(--space-8);
  max-width: var(--content-max-width);
  width: 100%;
  flex: 1;
}

/* === LAYOUT — BOOKING WIZARD === */
.layout-wizard {
  min-height: 100vh;
  background-color: var(--color-neutral-50);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-6) var(--space-4);
}

.wizard-container {
  width: 100%;
  max-width: var(--wizard-max-width);
}

/* === RESPONSIVE === */
@media (max-width: 1023px) {
  .layout-sidebar {
    transform: translateX(-100%);
    transition: transform var(--motion-normal);
  }

  .layout-sidebar.open {
    transform: translateX(0);
  }

  .layout-main {
    margin-left: 0;
  }

  .layout-content {
    padding: var(--space-6) var(--space-4);
  }
}

@media (max-width: 767px) {
  h1 { font-size: 1.875rem; }
  h2 { font-size: 1.5rem; }
  h3 { font-size: 1.25rem; }

  .layout-content {
    padding: var(--space-4);
  }

  .btn-lg {
    width: 100%;
  }
}