/* ========================================
   BARBER BOOKING PRO - FRONTEND STYLES
   Modern, Premium & Fully Responsive
   ======================================== */

/* ========== ROOT VARIABLES ========== */
:root {
  --bbp-primary: #1a1a2e;
  --bbp-primary-light: #16213e;
  --bbp-accent: #0f3460;
  --bbp-success: #10b981;
  --bbp-danger: #ef4444;
  --bbp-warning: #f59e0b;

  --bbp-text-primary: #1f2937;
  --bbp-text-secondary: #6b7280;
  --bbp-text-muted: #9ca3af;

  --bbp-bg-primary: #ffffff;
  --bbp-bg-secondary: #f9fafb;
  --bbp-bg-tertiary: #f3f4f6;

  --bbp-border: #e5e7eb;
  --bbp-border-light: #f3f4f6;

  --bbp-radius-sm: 8px;
  --bbp-radius-md: 12px;
  --bbp-radius-lg: 16px;
  --bbp-radius-xl: 20px;
  --bbp-radius-full: 9999px;

  --bbp-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --bbp-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --bbp-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --bbp-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  --bbp-transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ========== MAIN CONTAINER ========== */
.bbp-booking {
  border: 1px solid var(--bbp-border);
  border-radius: var(--bbp-radius-xl);
  padding: clamp(20px, 4vw, 32px);
  max-width: 1100px;
  margin: 0 auto;
  background: var(--bbp-bg-primary);
  box-shadow: var(--bbp-shadow-xl);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  line-height: 1.6;
}

/* ========== HEADER ========== */
.bbp-booking__header {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 24px;
  padding-bottom: 20px;
  border-bottom: 2px solid var(--bbp-border-light);
}

.bbp-booking__title {
  margin: 0;
  font-size: clamp(24px, 3vw, 32px);
  font-weight: 700;
  line-height: 1.2;
  color: var(--bbp-text-primary);
  background: linear-gradient(135deg, var(--bbp-primary) 0%, var(--bbp-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bbp-booking__subtitle {
  margin: 0;
  color: var(--bbp-text-secondary);
  font-size: clamp(14px, 1.5vw, 16px);
  font-weight: 400;
}

/* ========== PROGRESS STEPS ========== */
.bbp-steps {
  display: flex;
  gap: 12px;
  margin: 0 0 28px;
  flex-wrap: wrap;
}

.bbp-step {
  display: flex;
  gap: 10px;
  align-items: center;
  border: 2px solid var(--bbp-border);
  border-radius: var(--bbp-radius-full);
  padding: 12px 20px;
  font-size: 14px;
  font-weight: 500;
  color: var(--bbp-text-muted);
  background: var(--bbp-bg-secondary);
  transition: var(--bbp-transition);
  flex: 1;
  min-width: 140px;
  justify-content: center;
}

.bbp-step span {
  width: 28px;
  height: 28px;
  border-radius: var(--bbp-radius-full);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--bbp-border);
  background: var(--bbp-bg-primary);
  font-weight: 700;
  font-size: 13px;
  transition: var(--bbp-transition);
}

.bbp-step.is-active {
  color: var(--bbp-bg-primary);
  background: linear-gradient(135deg, var(--bbp-primary) 0%, var(--bbp-accent) 100%);
  border-color: var(--bbp-primary);
  box-shadow: var(--bbp-shadow-md);
}

.bbp-step.is-active span {
  border-color: var(--bbp-bg-primary);
  background: var(--bbp-bg-primary);
  color: var(--bbp-primary);
}

/* ========== FORM ========== */
.bbp-form {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.bbp-panel {
  display: none;
  animation: fadeIn 0.3s ease-in-out;
}

.bbp-panel.is-active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.bbp-form__row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
  align-items: end;
}

/* ========== FORM FIELDS ========== */
.bbp-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 14px;
  font-weight: 500;
  color: var(--bbp-text-primary);
}

.bbp-field select,
.bbp-field input,
.bbp-field textarea {
  border: 2px solid var(--bbp-border);
  border-radius: var(--bbp-radius-md);
  padding: 12px 16px;
  font-size: 15px;
  font-family: inherit;
  outline: none;
  transition: var(--bbp-transition);
  background: var(--bbp-bg-primary);
  color: var(--bbp-text-primary);
}

.bbp-field select:hover,
.bbp-field input:hover,
.bbp-field textarea:hover {
  border-color: var(--bbp-text-muted);
}

.bbp-field select:focus,
.bbp-field input:focus,
.bbp-field textarea:focus {
  border-color: var(--bbp-primary);
  box-shadow: 0 0 0 3px rgba(26, 26, 46, 0.1);
}

.bbp-field textarea {
  resize: vertical;
  min-height: 80px;
}

/* ========== NAVIGATION BUTTONS ========== */
.bbp-week-nav {
  display: flex;
  gap: 10px;
  justify-content: flex-end;
  align-items: center;
  flex-wrap: wrap;
}

/* ========== BUTTONS ========== */
.bbp-btn {
  border-radius: var(--bbp-radius-md);
  padding: 12px 24px;
  border: 2px solid var(--bbp-border);
  background: var(--bbp-bg-primary);
  cursor: pointer;
  font-size: 15px;
  font-weight: 600;
  font-family: inherit;
  transition: var(--bbp-transition);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  white-space: nowrap;
}

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

.bbp-btn:active {
  transform: translateY(0);
}

.bbp-btn--ghost {
  background: var(--bbp-bg-secondary);
  border-color: var(--bbp-border);
  color: var(--bbp-text-primary);
}

.bbp-btn--ghost:hover {
  background: var(--bbp-bg-tertiary);
  border-color: var(--bbp-text-muted);
}

.bbp-btn--primary {
  border: 0;
  background: linear-gradient(135deg, var(--bbp-primary) 0%, var(--bbp-accent) 100%);
  color: var(--bbp-bg-primary);
  box-shadow: var(--bbp-shadow-md);
}

.bbp-btn--primary:hover {
  box-shadow: var(--bbp-shadow-lg);
}

.bbp-btn--primary[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.bbp-btn--primary[disabled]:hover {
  box-shadow: var(--bbp-shadow-md);
}

/* ========== ACTIONS ========== */
.bbp-actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 20px;
  gap: 12px;
  flex-wrap: wrap;
}

.bbp-actions--between {
  justify-content: space-between;
}

/* ========== DIVIDER ========== */
.bbp-divider {
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--bbp-border), transparent);
  margin: 24px 0;
}

/* ========== AVAILABILITY SECTION ========== */
.bbp-availability {
  border: 2px dashed var(--bbp-border);
  border-radius: var(--bbp-radius-lg);
  padding: 20px;
  background: var(--bbp-bg-secondary);
  margin-top: 20px;
}

.bbp-availability__hint {
  color: var(--bbp-text-secondary);
  font-size: 14px;
  margin-bottom: 16px;
  text-align: center;
  font-weight: 500;
}

/* ========== WEEK GRID ========== */
.bbp-week {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 16px;
  align-items: stretch;
}

@media (max-width: 768px) {
  .bbp-week {
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  }
}

@media (max-width: 560px) {
  .bbp-week {
    grid-template-columns: 1fr;
  }
}

/* ========== DAY CARD ========== */
.bbp-day {
  background: var(--bbp-bg-primary);
  border: 2px solid var(--bbp-border);
  border-radius: var(--bbp-radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 280px;
  height: 100%;
  transition: var(--bbp-transition);
  box-shadow: var(--bbp-shadow-sm);
}

.bbp-day:hover {
  border-color: var(--bbp-text-muted);
  box-shadow: var(--bbp-shadow-md);
  transform: translateY(-2px);
}

.bbp-day__head {
  padding: 14px 16px;
  border-bottom: 2px solid var(--bbp-border-light);
  background: linear-gradient(180deg, var(--bbp-bg-primary), var(--bbp-bg-secondary));
}

.bbp-day__title {
  font-weight: 700;
  font-size: 15px;
  color: var(--bbp-text-primary);
  margin: 0;
}

.bbp-day__date {
  font-size: 13px;
  color: var(--bbp-text-secondary);
  margin-top: 4px;
  font-weight: 500;
}

.bbp-day__slots {
  padding: 12px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  flex: 1;
  align-content: flex-start;
}

.bbp-empty {
  padding: 20px;
  color: var(--bbp-text-muted);
  font-size: 13px;
  text-align: center;
  font-style: italic;
}

/* ========== TIME SLOTS ========== */
.bbp-slot {
  border: 2px solid var(--bbp-border);
  background: var(--bbp-bg-primary);
  border-radius: var(--bbp-radius-full);
  padding: 10px 16px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  display: inline-flex;
  gap: 6px;
  align-items: center;
  transition: var(--bbp-transition);
  color: var(--bbp-text-primary);
}

.bbp-slot:hover {
  background: var(--bbp-bg-secondary);
  border-color: var(--bbp-primary);
  transform: scale(1.05);
}

.bbp-slot.is-active {
  border-color: var(--bbp-primary);
  background: linear-gradient(135deg, var(--bbp-primary) 0%, var(--bbp-accent) 100%);
  color: var(--bbp-bg-primary);
  box-shadow: var(--bbp-shadow-md);
}

/* ========== SUMMARY CARD ========== */
.bbp-summary {
  border: 2px solid var(--bbp-border);
  border-radius: var(--bbp-radius-lg);
  padding: 20px;
  background: linear-gradient(135deg, var(--bbp-bg-secondary) 0%, var(--bbp-bg-primary) 100%);
  box-shadow: var(--bbp-shadow-sm);
}

.bbp-summary__title {
  font-weight: 800;
  font-size: 18px;
  margin-bottom: 16px;
  color: var(--bbp-text-primary);
}

.bbp-summary__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
}

.bbp-summary__grid div {
  background: var(--bbp-bg-primary);
  border: 2px solid var(--bbp-border-light);
  border-radius: var(--bbp-radius-md);
  padding: 14px;
  transition: var(--bbp-transition);
}

.bbp-summary__grid div:hover {
  border-color: var(--bbp-border);
  box-shadow: var(--bbp-shadow-sm);
}

.bbp-summary__grid span {
  display: block;
  font-size: 12px;
  color: var(--bbp-text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  font-weight: 600;
}

.bbp-summary__grid strong {
  font-size: 16px;
  color: var(--bbp-text-primary);
  font-weight: 700;
}

/* ========== MESSAGES ========== */
.bbp-msg {
  min-height: 24px;
  font-size: 14px;
  color: var(--bbp-text-primary);
  margin-top: 12px;
  padding: 12px 16px;
  border-radius: var(--bbp-radius-md);
  font-weight: 500;
}

.bbp-msg.success {
  background: #d1fae5;
  color: #065f46;
  border: 2px solid #10b981;
}

.bbp-msg.error {
  background: #fee2e2;
  color: #991b1b;
  border: 2px solid #ef4444;
}

.bbp-msg.info {
  background: #dbeafe;
  color: #1e40af;
  border: 2px solid #3b82f6;
}

/* ========== RESPONSIVE ADJUSTMENTS ========== */
@media (max-width: 768px) {
  .bbp-booking {
    padding: 20px;
    border-radius: var(--bbp-radius-lg);
  }

  .bbp-booking__header {
    margin-bottom: 20px;
    padding-bottom: 16px;
  }

  .bbp-steps {
    gap: 8px;
  }

  .bbp-step {
    padding: 10px 16px;
    font-size: 13px;
    min-width: 120px;
  }

  .bbp-step span {
    width: 24px;
    height: 24px;
    font-size: 12px;
  }

  .bbp-form__row {
    grid-template-columns: 1fr;
  }

  .bbp-summary__grid {
    grid-template-columns: 1fr;
  }

  .bbp-actions {
    flex-direction: column-reverse;
  }

  .bbp-actions .bbp-btn {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .bbp-booking {
    padding: 16px;
  }

  .bbp-steps {
    flex-direction: column;
  }

  .bbp-step {
    width: 100%;
  }

  .bbp-week-nav {
    justify-content: center;
  }
}

/* ========== LOADING STATE ========== */
.bbp-loading {
  display: inline-block;
  width: 16px;
  height: 16px;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: #fff;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ========== ACCESSIBILITY ========== */
.bbp-booking *:focus-visible {
  outline: 2px solid var(--bbp-primary);
  outline-offset: 2px;
}

/* ========== PRINT STYLES ========== */
@media print {
  .bbp-booking {
    box-shadow: none;
    border: 1px solid #000;
  }

  .bbp-btn,
  .bbp-week-nav {
    display: none;
  }
}