/* ============================================
   BARBAZZA BARBER SHOP - DESIGN SYSTEM
   Professional, Light, Classic Aesthetic
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@300;400;500;600;700&display=swap');

:root {
  /* ==================== COLORS ==================== */
  
  /* Primary Palette - Light & Luxurious */
  --barbazza-black: #ffffff;
  --barbazza-charcoal: #f8f8f8;
  --barbazza-slate: #f0f0f0;
  --barbazza-graphite: #e8e8e8;
  
  /* Accent Colors - Black & Sophistication */
  --barbazza-gold: #0a0a0a;
  --barbazza-gold-light: #2a2a2a;
  --barbazza-gold-dark: #000000;
  --barbazza-bronze: #1a1a1a;
  
  /* Secondary Accents */
  --barbazza-burgundy: #6b1f1f;
  --barbazza-burgundy-light: #8b2f2f;
  --barbazza-deep-red: #4a1414;
  
  /* Neutral Tones */
  --barbazza-white: #0a0a0a;
  --barbazza-cream: #2a2a2a;
  --barbazza-beige: #3a3a3a;
  --barbazza-stone: #6a6a6a;
  --barbazza-silver: #808080;
  
  /* UI States */
  --barbazza-success: #2d5a3f;
  --barbazza-warning: #8b6914;
  --barbazza-error: #c0392b;
  --barbazza-info: #3498db;
  
  /* ==================== TYPOGRAPHY ==================== */
  
  /* Font Families */
  --font-primary: 'Cormorant Garamond', 'Playfair Display', serif;
  --font-secondary: 'Cinzel', 'Cormorant Garamond', serif;
  --font-body: -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  
  /* Font Sizes - Compact Scale */
  --text-xs: 0.7rem;       /* 7px */
  --text-sm: 0.85rem;      /* 8.5px */
  --text-base: 1rem;       /* 10px */
  --text-lg: 1.1rem;       /* 11px */
  --text-xl: 1.2rem;       /* 12px */
  --text-2xl: 1.4rem;      /* 14px */
  --text-3xl: 1.6rem;      /* 16px */
  --text-4xl: 1.8rem;      /* 18px */
  --text-5xl: 2.2rem;      /* 22px */
  --text-6xl: 2.6rem;      /* 26px */
  
  /* Font Weights */
  --weight-light: 300;
  --weight-normal: 400;
  --weight-medium: 500;
  --weight-semibold: 600;
  --weight-bold: 700;
  
  /* Line Heights */
  --leading-tight: 1.2;
  --leading-snug: 1.4;
  --leading-normal: 1.6;
  --leading-relaxed: 1.8;
  --leading-loose: 2;
  
  /* Letter Spacing */
  --tracking-tight: -0.02em;
  --tracking-normal: 0;
  --tracking-wide: 0.05em;
  --tracking-wider: 0.1em;
  --tracking-widest: 0.15em;
  
  /* ==================== SPACING ==================== */
  
  --space-1: 0.2rem;       /* 2px */
  --space-2: 0.4rem;       /* 4px */
  --space-3: 0.6rem;       /* 6px */
  --space-4: 0.8rem;       /* 8px */
  --space-5: 1rem;         /* 10px */
  --space-6: 1.2rem;       /* 12px */
  --space-8: 1.6rem;       /* 16px */
  --space-10: 2rem;        /* 20px */
  --space-12: 2.4rem;      /* 24px */
  --space-16: 3.2rem;      /* 32px */
  --space-20: 4rem;        /* 40px */
  --space-24: 4.8rem;      /* 48px */
  
  /* ==================== BORDERS ==================== */
  
  /* Border Widths */
  --border-thin: 1px;
  --border-medium: 2px;
  --border-thick: 3px;
  
  /* Border Radius */
  --radius-sm: 2px;
  --radius-md: 4px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  --radius-2xl: 16px;
  --radius-full: 9999px;
  
  /* Border Colors */
  --border-primary: var(--barbazza-gold);
  --border-secondary: var(--barbazza-graphite);
  --border-subtle: rgba(10, 10, 10, 0.2);
  
  /* ==================== SHADOWS ==================== */
  
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.08);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.12);
  --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.15);
  --shadow-2xl: 0 24px 48px rgba(0, 0, 0, 0.18);
  
  /* Glow Effects */
  --glow-gold: 0 0 20px rgba(10, 10, 10, 0.15);
  --glow-gold-strong: 0 0 30px rgba(10, 10, 10, 0.2);
  
  /* ==================== TRANSITIONS ==================== */
  
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 500ms cubic-bezier(0.4, 0, 0.1, 1);
  
  /* ==================== Z-INDEX ==================== */
  
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
  
  /* ==================== LAYOUT ==================== */
  
  /* Container Widths */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
  --container-2xl: 1536px;
  
  /* Sidebar */
  --sidebar-width: 280px;
  --sidebar-collapsed: 80px;
  
  /* Header */
  --header-height: 70px;
  
  /* ==================== GRADIENTS ==================== */
  
  --gradient-gold: linear-gradient(135deg, var(--barbazza-gold-dark) 0%, var(--barbazza-gold) 50%, var(--barbazza-gold-light) 100%);
  --gradient-dark: linear-gradient(180deg, var(--barbazza-charcoal) 0%, var(--barbazza-black) 100%);
  --gradient-overlay: linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, rgba(255, 255, 255, 0.8) 100%);
  --gradient-shine: linear-gradient(90deg, transparent 0%, rgba(0, 0, 0, 0.05) 50%, transparent 100%);
  
  /* ==================== OPACITY ==================== */
  
  --opacity-disabled: 0.4;
  --opacity-hover: 0.85;
  --opacity-muted: 0.6;
  --opacity-subtle: 0.3;
  
  /* ==================== ANIMATIONS ==================== */
  
  --animate-fade-in: fadeIn var(--transition-base);
  --animate-slide-up: slideUp var(--transition-smooth);
  --animate-scale: scaleIn var(--transition-base);
}

/* ==================== COMPONENT UTILITIES ==================== */

/* Glass Morphism Effect */
.glass-effect {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(12px);
  border: 1px solid rgba(10, 10, 10, 0.2);
}

/* Black Accent Border */
.gold-border {
  border: 2px solid var(--barbazza-gold);
  box-shadow: var(--glow-gold);
}

/* Premium Card Style */
.premium-card {
  background: var(--barbazza-charcoal);
  border: 1px solid var(--barbazza-graphite);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-base);
}

.premium-card:hover {
  border-color: var(--barbazza-gold);
  box-shadow: var(--shadow-lg), var(--glow-gold);
  transform: translateY(-2px);
}

/* ==================== ANIMATIONS ==================== */

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.95);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes shimmer {
  0% { background-position: -100% 0; }
  100% { background-position: 200% 0; }
}

/* ==================== GLOBAL RESETS ==================== */

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

html {
  font-size: 16px; /* Mobile-first base font size */
  overflow-x: hidden;
  -webkit-text-size-adjust: 100%;
  -ms-text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--barbazza-black);
  color: var(--barbazza-cream);
  line-height: var(--leading-normal);
  font-size: var(--text-base);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-tight);
  color: var(--barbazza-white);
}

/* ==================== SCROLLBAR STYLING ==================== */

::-webkit-scrollbar {
  width: 10px;
  height: 10px;
}

::-webkit-scrollbar-track {
  background: var(--barbazza-slate);
}

::-webkit-scrollbar-thumb {
  background: var(--barbazza-gold);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--barbazza-gold-light);
}

/* ==================== SELECTION ==================== */

::selection {
  background-color: var(--barbazza-gold);
  color: var(--barbazza-black);
}

/* ==================== SHINY COMPONENTS ==================== */

/* DataTables Styling */
.dataTables_wrapper {
  color: var(--barbazza-cream);
}

.dataTables_wrapper .dataTables_filter input {
  background: var(--barbazza-slate);
  border: 1px solid var(--barbazza-graphite);
  border-radius: var(--radius-md);
  color: var(--barbazza-white);
  padding: var(--space-2) var(--space-3);
}

.dataTables_wrapper .dataTables_filter input:focus {
  border-color: var(--barbazza-gold);
  outline: none;
}

.dataTables_wrapper .dataTables_length select {
  background: var(--barbazza-slate);
  border: 1px solid var(--barbazza-graphite);
  border-radius: var(--radius-md);
  color: var(--barbazza-white);
  padding: var(--space-2);
}

.dataTables_wrapper table {
  background: var(--barbazza-charcoal);
  color: var(--barbazza-cream);
  border-collapse: collapse;
}

.dataTables_wrapper table thead th {
  background: var(--barbazza-slate);
  color: var(--barbazza-gold);
  border-bottom: 2px solid var(--barbazza-gold);
  padding: var(--space-3);
  font-weight: var(--weight-semibold);
}

.dataTables_wrapper table tbody tr {
  border-bottom: 1px solid var(--barbazza-graphite);
}

.dataTables_wrapper table tbody tr:hover {
  background: var(--barbazza-slate);
}

.dataTables_wrapper table tbody td {
  padding: var(--space-3);
  color: var(--barbazza-cream);
}

.dataTables_wrapper .dataTables_paginate .paginate_button {
  background: var(--barbazza-slate);
  border: 1px solid var(--barbazza-graphite);
  color: var(--barbazza-cream);
  padding: var(--space-2) var(--space-3);
  margin: 0 var(--space-1);
  border-radius: var(--radius-md);
}

.dataTables_wrapper .dataTables_paginate .paginate_button:hover {
  background: var(--barbazza-gold);
  color: var(--barbazza-black);
  border-color: var(--barbazza-gold);
}

.dataTables_wrapper .dataTables_paginate .paginate_button.current {
  background: var(--barbazza-gold);
  color: var(--barbazza-black);
  border-color: var(--barbazza-gold);
}

/* Shiny Inputs */
.shiny-input-container {
  margin-bottom: var(--space-4);
}

.shiny-input-container label {
  color: var(--barbazza-cream);
  font-weight: var(--weight-medium);
  margin-bottom: var(--space-2);
  display: block;
}

select, input[type="text"], input[type="number"], input[type="date"], textarea {
  background: var(--barbazza-slate);
  border: 1px solid var(--barbazza-graphite);
  border-radius: var(--radius-md);
  color: var(--barbazza-white);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  transition: all var(--transition-base);
  width: 100%;
}

select:focus, input[type="text"]:focus, input[type="number"]:focus, 
input[type="date"]:focus, textarea:focus {
  outline: none;
  border-color: var(--barbazza-gold);
  box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

select option {
  background: var(--barbazza-charcoal);
  color: var(--barbazza-cream);
}

/* Action Buttons */
.action-button {
  background: var(--barbazza-gold);
  color: var(--barbazza-black);
  border: none;
  padding: var(--space-3) var(--space-5);
  border-radius: var(--radius-md);
  font-weight: var(--weight-semibold);
  cursor: pointer;
  transition: all var(--transition-base);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  font-size: var(--text-sm);
}

.action-button:hover {
  background: var(--barbazza-gold-light);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md), var(--glow-gold);
}

.action-button:active {
  transform: translateY(0);
}

/* Date Inputs */
.datepicker {
  background: var(--barbazza-slate);
  border: 1px solid var(--barbazza-graphite);
  color: var(--barbazza-cream);
}

/* Notifications */
.shiny-notification {
  background: var(--barbazza-charcoal);
  border: 2px solid var(--barbazza-gold);
  color: var(--barbazza-cream);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
}

/* Loading Spinner */
.shiny-spinner-container {
  color: var(--barbazza-gold);
}

/* Tab Panels */
.nav-tabs {
  border-bottom: 2px solid var(--barbazza-gold);
}

.nav-tabs > li > a {
  color: var(--barbazza-cream);
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
}

.nav-tabs > li > a:hover {
  background: var(--barbazza-slate);
  color: var(--barbazza-gold);
  border-bottom-color: var(--barbazza-gold);
}

.nav-tabs > li.active > a {
  background: transparent;
  color: var(--barbazza-gold);
  border-bottom-color: var(--barbazza-gold);
}

/* ==================== MODULE-SPECIFIC STYLES ==================== */

/* Admin Module Styles */
.admin-tabs {
  background: var(--barbazza-charcoal);
  border-bottom: 2px solid var(--barbazza-gold);
  padding: 0;
  margin-bottom: var(--space-6);
}

.admin-tabs .nav-link {
  color: var(--barbazza-cream);
  padding: var(--space-4) var(--space-6);
  border: none;
  border-bottom: 3px solid transparent;
  transition: all var(--transition-base);
}

.admin-tabs .nav-link:hover {
  background: var(--barbazza-slate);
  color: var(--barbazza-gold);
}

.admin-tabs .nav-link.active {
  background: transparent;
  color: var(--barbazza-gold);
  border-bottom-color: var(--barbazza-gold);
}

.admin-card {
  background: var(--barbazza-charcoal);
  border: 1px solid var(--barbazza-graphite);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
  box-shadow: var(--shadow-lg);
}

.admin-card h3 {
  color: var(--barbazza-gold);
  margin-bottom: var(--space-4);
  font-family: var(--font-primary);
}

.stat-card {
  background: var(--barbazza-slate);
  border: 1px solid var(--barbazza-graphite);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  text-align: center;
  transition: all var(--transition-base);
}

.stat-card:hover {
  border-color: var(--barbazza-gold);
  transform: translateY(-2px);
}

.stat-value {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--barbazza-gold);
  margin: var(--space-1) 0;
}

.stat-label {
  color: var(--barbazza-cream);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

/* Manager Module Styles */
.manager-tabs {
  background: var(--barbazza-charcoal);
  border-bottom: 2px solid var(--barbazza-gold);
  padding: 0;
  margin-bottom: var(--space-6);
}

.manager-tabs .nav-link {
  color: var(--barbazza-cream);
  padding: var(--space-4) var(--space-6);
  border: none;
  border-bottom: 3px solid transparent;
  transition: all var(--transition-base);
}

.manager-tabs .nav-link:hover {
  background: var(--barbazza-slate);
  color: var(--barbazza-gold);
}

.manager-tabs .nav-link.active {
  background: transparent;
  color: var(--barbazza-gold);
  border-bottom-color: var(--barbazza-gold);
}

.manager-card {
  background: var(--barbazza-charcoal);
  border: 1px solid var(--barbazza-graphite);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
  box-shadow: var(--shadow-lg);
}

.manager-card h3 {
  color: var(--barbazza-gold);
  margin-bottom: var(--space-4);
  font-family: var(--font-primary);
}

.service-form {
  background: var(--barbazza-slate);
  padding: var(--space-6);
  border-radius: var(--radius-md);
  border: 1px solid var(--barbazza-graphite);
}

.service-form .form-group {
  margin-bottom: var(--space-4);
}

.service-form label {
  color: var(--barbazza-cream);
  font-weight: var(--weight-medium);
  margin-bottom: var(--space-2);
  display: block;
}

.daily-summary-card {
  background: var(--barbazza-slate);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  text-align: center;
  border: 1px solid var(--barbazza-graphite);
  transition: all var(--transition-base);
}

.daily-summary-card:hover {
  border-color: var(--barbazza-gold);
  transform: translateY(-2px);
}

.summary-value {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  color: var(--barbazza-gold);
  margin: var(--space-2) 0;
}

.summary-label {
  color: var(--barbazza-cream);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

/* Barber Module Styles */
.barber-card {
  background: var(--barbazza-charcoal);
  border: 1px solid var(--barbazza-graphite);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
  box-shadow: var(--shadow-lg);
}

.barber-card h3 {
  color: var(--barbazza-gold);
  margin-bottom: var(--space-4);
  font-family: var(--font-primary);
}

/* Supervisor Module Styles */
.supervisor-card {
  background: var(--barbazza-charcoal);
  border: 1px solid var(--barbazza-graphite);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-bottom: var(--space-4);
  box-shadow: var(--shadow-lg);
}

.supervisor-card h3 {
  color: var(--barbazza-gold);
  margin-bottom: var(--space-4);
  font-family: var(--font-primary);
}

.earnings-card {
  background: var(--barbazza-slate);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  text-align: center;
  border: 1px solid var(--barbazza-graphite);
  transition: all var(--transition-base);
}

.earnings-card:hover {
  border-color: var(--barbazza-gold);
  transform: translateY(-2px);
}

.earnings-value {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  color: var(--barbazza-gold);
  margin: var(--space-2) 0;
}

.earnings-label {
  color: var(--barbazza-cream);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
}

.performance-chart {
  background: var(--barbazza-slate);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  border: 1px solid var(--barbazza-graphite);
}

.earnings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.period-selector {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  justify-content: center;
}

.period-btn {
  padding: var(--space-2) var(--space-4);
  background: var(--barbazza-slate);
  border: 1px solid var(--barbazza-graphite);
  border-radius: var(--radius-md);
  color: var(--barbazza-cream);
  cursor: pointer;
  transition: all var(--transition-base);
}

.period-btn:hover {
  background: var(--barbazza-graphite);
}

.period-btn.active {
  background: var(--barbazza-gold);
  color: white;
  border-color: var(--barbazza-gold);
}

.daily-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

/* Login Button States */
.btn-primary:disabled,
.btn-primary.btn-processing {
  opacity: 0.9;
  cursor: not-allowed;
  position: relative;
  padding-right: var(--space-12) !important;
}

.form-control:disabled,
input:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  background: var(--barbazza-graphite) !important;
}

/* Smooth transitions for show/hide */
.shiny-element-hidden {
  display: none !important;
}

/* Spinning Loading Indicator */
.btn-primary:disabled::before,
.btn-primary.btn-processing::before {
  content: "";
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  border-top-color: white;
  animation: spinner 0.8s linear infinite;
}

@keyframes spinner {
  0% {
    transform: translateY(-50%) rotate(0deg);
  }
  100% {
    transform: translateY(-50%) rotate(360deg);
  }
}

/* Alternative pulsing background for button */
.btn-primary:disabled::after,
.btn-primary.btn-processing::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(255, 255, 255, 0.1), 
    transparent
  );
  animation: shimmer 1.5s infinite;
  border-radius: var(--radius-md);
  pointer-events: none;
}

@keyframes shimmer {
  0% {
    transform: translateX(-100%);
  }
  100% {
    transform: translateX(100%);
  }
}

/* Alternative Spinner Styles (if you want to switch) */
/* 
   To use a different spinner, replace .btn-primary:disabled::before with one of these:
*/

/* Option 2: Dual Ring Spinner (Thicker) */
/*
.btn-primary:disabled::before {
  content: "";
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  width: 20px;
  height: 20px;
  border: 4px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  border-top: 4px solid white;
  border-bottom: 4px solid white;
  animation: spinner 0.6s linear infinite;
}
*/

/* Option 3: Dots Spinner */
/*
.btn-primary:disabled::before {
  content: "⠋";
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  font-size: 24px;
  color: white;
  animation: dots 1s steps(8) infinite;
}

@keyframes dots {
  0% { content: "⠋"; }
  12.5% { content: "⠙"; }
  25% { content: "⠹"; }
  37.5% { content: "⠸"; }
  50% { content: "⠼"; }
  62.5% { content: "⠴"; }
  75% { content: "⠦"; }
  87.5% { content: "⠧"; }
  100% { content: "⠇"; }
}
*/

/* Action Buttons in Tables */
.btn-action-edit,
.btn-action-delete {
  padding: var(--space-2) var(--space-3);
  border: none;
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  cursor: pointer;
  transition: all var(--transition-base);
  margin: 0 var(--space-1);
}

.btn-action-edit {
  background: var(--barbazza-gold);
  color: white;
}

.btn-action-edit:hover {
  background: var(--barbazza-gold-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.btn-action-delete {
  background: var(--barbazza-error);
  color: white;
}

.btn-action-delete:hover {
  background: #a33;
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

/* ============================================
   MOBILE-FIRST RESPONSIVE DESIGN
   ============================================ */

/* Base Mobile Optimizations (0-767px) */
@media (max-width: 767px) {
  
  /* --- TYPOGRAPHY --- */
  html {
    font-size: 14px !important;
  }
  
  body {
    zoom: 1 !important;
    font-size: 1rem;
    line-height: 1.5;
    -webkit-text-size-adjust: 100%;
  }
  
  h1, h2, h3, h4, h5, h6 {
    margin-top: var(--space-4);
    margin-bottom: var(--space-3);
  }
  
  h1 { font-size: 1.75rem !important; }
  h2 { font-size: 1.5rem !important; }
  h3 { font-size: 1.25rem !important; }
  h4 { font-size: 1.1rem !important; }
  
  /* --- LAYOUT --- */
  .container-fluid, .container {
    padding-left: var(--space-3) !important;
    padding-right: var(--space-3) !important;
  }
  
  .row {
    margin-left: -8px !important;
    margin-right: -8px !important;
  }
  
  .col, [class*="col-"] {
    padding-left: 8px !important;
    padding-right: 8px !important;
  }
  
  /* --- CARDS & CONTAINERS --- */
  .admin-card,
  .manager-card,
  .supervisor-card,
  .barber-card {
    padding: var(--space-4) !important;
    margin-bottom: var(--space-4) !important;
    border-radius: var(--radius-md) !important;
  }
  
  /* --- GRIDS - Stack Vertically --- */
  .daily-summary,
  .earnings-grid {
    grid-template-columns: 1fr !important;
    gap: var(--space-3) !important;
  }
  
  .stat-card,
  .summary-card,
  .earnings-card {
    margin-bottom: var(--space-3) !important;
    padding: var(--space-4) !important;
  }
  
  /* --- FORMS --- */
  .form-group {
    margin-bottom: var(--space-4) !important;
  }
  
  .form-control,
  input[type="text"],
  input[type="email"],
  input[type="password"],
  input[type="number"],
  input[type="tel"],
  select,
  textarea {
    font-size: 16px !important; /* Prevents zoom on iOS */
    padding: var(--space-3) var(--space-4) !important;
    min-height: 44px !important; /* Touch-friendly */
    width: 100% !important;
    border-radius: var(--radius-md) !important;
  }
  
  label {
    font-size: 0.95rem !important;
    font-weight: var(--weight-medium);
    margin-bottom: var(--space-2) !important;
    display: block;
  }
  
  /* Stack form rows vertically */
  .service-form .row {
    display: flex !important;
    flex-direction: column !important;
  }
  
  .service-form .col,
  .service-form [class*="col-"] {
    width: 100% !important;
    max-width: 100% !important;
    flex: none !important;
  }
  
  /* --- BUTTONS --- */
  .btn,
  .btn-primary,
  .btn-action,
  button {
    min-height: 44px !important; /* Touch-friendly */
    padding: var(--space-3) var(--space-5) !important;
    font-size: 1rem !important;
    width: 100% !important;
    max-width: 100% !important;
    margin-bottom: var(--space-3) !important;
    border-radius: var(--radius-md) !important;
    touch-action: manipulation; /* Better touch response */
  }
  
  /* Button groups - stack vertically */
  .btn-group {
    display: flex !important;
    flex-direction: column !important;
    gap: var(--space-2) !important;
  }
  
  .btn-group .btn {
    margin: 0 !important;
  }
  
  /* Action buttons in tables - smaller */
  .btn-action-edit,
  .btn-action-delete,
  td .btn-action {
    min-height: 36px !important;
    padding: var(--space-2) var(--space-3) !important;
    font-size: 0.85rem !important;
    width: auto !important;
    min-width: 70px !important;
    display: inline-block !important;
    margin: 2px !important;
  }
  
  /* --- NAVIGATION TABS --- */
  .nav-tabs,
  .admin-tabs .nav-tabs,
  .manager-tabs .nav-tabs {
    flex-wrap: wrap !important;
    border-bottom: 1px solid var(--barbazza-graphite) !important;
  }
  
  .nav-link,
  .admin-tabs .nav-link,
  .manager-tabs .nav-link {
    padding: var(--space-3) var(--space-3) !important;
    font-size: 0.9rem !important;
    min-width: 90px !important;
    text-align: center !important;
    white-space: nowrap !important;
  }
  
  /* Scrollable tabs for many tabs */
  .tabset-parent {
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
  }
  
  /* --- TABLES --- */
  .dataTables_wrapper {
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
  }
  
  table.dataTable {
    font-size: 0.85rem !important;
    width: 100% !important;
  }
  
  table.dataTable thead th,
  table.dataTable tbody td {
    padding: var(--space-2) var(--space-2) !important;
    white-space: nowrap !important;
  }
  
  /* DataTables controls */
  .dataTables_length,
  .dataTables_filter {
    margin-bottom: var(--space-3) !important;
  }
  
  .dataTables_filter input {
    width: 100% !important;
    margin-left: 0 !important;
    margin-top: var(--space-2) !important;
  }
  
  .dataTables_length select {
    min-height: 36px !important;
  }
  
  /* DataTables pagination */
  .dataTables_paginate {
    margin-top: var(--space-4) !important;
  }
  
  .paginate_button {
    padding: var(--space-2) var(--space-3) !important;
    margin: 0 2px !important;
    min-width: 36px !important;
    min-height: 36px !important;
  }
  
  /* --- LOGIN PAGE --- */
  .login-container {
    padding: var(--space-4) !important;
  }
  
  .login-box {
    max-width: 100% !important;
    padding: var(--space-5) var(--space-4) !important;
    margin: var(--space-4) auto !important;
  }
  
  .login-logo img {
    max-width: 120px !important;
  }
  
  .login-title {
    font-size: 1.5rem !important;
  }
  
  /* --- MODALS --- */
  .modal-dialog {
    margin: var(--space-3) !important;
    max-width: calc(100% - var(--space-6)) !important;
  }
  
  .modal-content {
    padding: var(--space-4) !important;
  }
  
  .modal-header {
    padding: var(--space-3) var(--space-4) !important;
  }
  
  .modal-body {
    padding: var(--space-4) !important;
    max-height: calc(100vh - 200px) !important;
    overflow-y: auto !important;
  }
  
  .modal-footer {
    padding: var(--space-3) var(--space-4) !important;
    flex-direction: column !important;
  }
  
  .modal-footer .btn {
    width: 100% !important;
    margin: 0 0 var(--space-2) 0 !important;
  }
  
  /* --- HEADER --- */
  .header-logo {
    flex-direction: column !important;
    gap: var(--space-2) !important;
    padding: var(--space-3) !important;
  }
  
  .header-logo img {
    max-height: 40px !important;
  }
  
  .header-title {
    font-size: 1.2rem !important;
  }
  
  /* --- PERIOD SELECTOR --- */
  .period-selector {
    display: flex !important;
    flex-direction: column !important;
    gap: var(--space-2) !important;
    margin-bottom: var(--space-4) !important;
  }
  
  .period-btn {
    width: 100% !important;
    justify-content: center !important;
  }
  
  /* --- NOTIFICATIONS --- */
  .shiny-notification {
    width: calc(100% - var(--space-6)) !important;
    left: var(--space-3) !important;
    right: var(--space-3) !important;
    font-size: 0.9rem !important;
  }
  
  /* --- SPACING ADJUSTMENTS --- */
  .admin-card > h3,
  .manager-card > h3,
  .supervisor-card > h3,
  .barber-card > h3 {
    font-size: 1.25rem !important;
    margin-bottom: var(--space-3) !important;
  }
  
  /* --- TEXT READABILITY --- */
  p, li, td, span {
    line-height: 1.6 !important;
  }
  
  /* --- TOUCH IMPROVEMENTS --- */
  * {
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
  }
  
  a, button, input, select, textarea {
    -webkit-tap-highlight-color: rgba(0, 0, 0, 0.2);
  }
  
  /* --- CREDIT REQUEST FORM --- */
  #barber-credit_amount,
  #barber-credit_reason {
    font-size: 16px !important;
  }
  
  /* --- HIDE OVERFLOW --- */
  body {
    overflow-x: hidden !important;
  }
}

/* Tablet Optimizations (768px - 1024px) */
@media (min-width: 768px) and (max-width: 1024px) {
  html {
    font-size: 14px;
  }
  
  .daily-summary,
  .earnings-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
  
  .nav-link {
    padding: var(--space-3) var(--space-4);
  }
  
  .btn {
    min-width: 120px;
    width: auto !important;
  }
  
  .admin-card,
  .manager-card,
  .supervisor-card,
  .barber-card {
    padding: var(--space-6);
  }
}

/* Desktop Optimizations (1025px+) */
@media (min-width: 1025px) {
  html {
    font-size: 12px;
  }
  
  body {
    zoom: 0.9;
  }
  
  .daily-summary,
  .earnings-grid {
    grid-template-columns: repeat(4, 1fr);
  }
  
  .btn {
    width: auto !important;
    min-width: 120px;
  }
  
  .modal-dialog {
    max-width: 600px;
  }
  
  .login-box {
    max-width: 400px;
  }
  
  /* Desktop table optimizations */
  table.dataTable {
    font-size: 0.9rem;
  }
  
  .btn-action-edit,
  .btn-action-delete {
    font-size: 0.85rem;
    padding: var(--space-2) var(--space-4);
  }
}