/* ================================================
   AI Make IT - Design System
   Modern, Cohesive Design Language
   ================================================ */

:root {
  /* ========== Theme Mode ========== */
  --mode: 'dark';
  
  /* ========== Dark Mode Backgrounds (Default) ========== */
  --bg-primary: #000000;
  --bg-secondary: #0a0a0a;
  --bg-tertiary: #1a1a1a;
  --bg-card: #121212;
  --bg-surface: #1F1F1F;
  
  /* ========== Dark Mode Text Colors (Default) ========== */
  --text-primary: #ffffff;
  --text-secondary: #a0a0a0;
  --text-tertiary: #666666;
  --text-muted: #4a4a4a;
  
  /* ========== Primary Colors ========== */
  --primary-blue: #0B6CFF;
  --primary-blue-light: #3D8AFF;
  --primary-blue-lighter: #6FA8FF;
  --primary-blue-dark: #0952CC;
  --primary-blue-darker: #073D99;
  
  --primary-purple: #7C3AED;
  --primary-purple-light: #9254F5;
  --primary-purple-lighter: #A872F7;
  --primary-purple-dark: #6020D9;
  --primary-purple-darker: #4B13A5;
  
  --primary-green: #10B981;
  --primary-green-light: #34D399;
  --primary-green-lighter: #6EE7B7;
  --primary-green-dark: #059669;
  --primary-green-darker: #047857;
  
  --accent-orange: #F59E0B;
  --accent-orange-light: #FBBF24;
  --accent-orange-lighter: #FCD34D;
  --accent-orange-dark: #D97706;
  --accent-orange-darker: #B45309;
  
  /* ========== Semantic Colors ========== */
  --color-success: #10B981;
  --color-success-light: #D1FAE5;
  --color-success-dark: #047857;
  
  --color-warning: #F59E0B;
  --color-warning-light: #FEF3C7;
  --color-warning-dark: #D97706;
  
  --color-error: #EF4444;
  --color-error-light: #FEE2E2;
  --color-error-dark: #DC2626;
  
  --color-info: #0B6CFF;
  --color-info-light: #DBEAFE;
  --color-info-dark: #0952CC;
  
  /* ========== Neutral Colors ========== */
  --white: #FFFFFF;
  --gray-50: #F9FAFB;
  --gray-100: #F3F4F6;
  --gray-200: #E5E7EB;
  --gray-300: #D1D5DB;
  --gray-400: #9CA3AF;
  --gray-500: #6B7280;
  --gray-600: #4B5563;
  --gray-700: #374151;
  --gray-800: #1F2937;
  --gray-900: #111827;
  --black: #000000;
  
  /* ========== Dark Theme ========== */
  --dark-bg: #0A0E1A;
  --dark-surface: #1A1F2E;
  --dark-card: #252B3D;
  --dark-border: #374151;
  --dark-text: #F9FAFB;
  --dark-text-muted: #9CA3AF;
  
  /* ========== Gradients ========== */
  --gradient-primary: linear-gradient(135deg, var(--primary-blue), var(--primary-purple));
  --gradient-secondary: linear-gradient(135deg, var(--primary-green), var(--accent-orange));
  --gradient-success: linear-gradient(135deg, #10B981, #059669);
  --gradient-warning: linear-gradient(135deg, #F59E0B, #D97706);
  --gradient-error: linear-gradient(135deg, #EF4444, #DC2626);
  --gradient-hero: linear-gradient(135deg, #0A0E1A 0%, #1A1F2E 50%, #252B3D 100%);
  --gradient-overlay: linear-gradient(180deg, rgba(0, 0, 0, 0) 0%, rgba(0, 0, 0, 0.4) 100%);
  
  /* ========== CTA Gradients (Sito Madre Style) ========== */
  --gradient-cta: linear-gradient(90deg, #0B6CFF 0%, #2E80FF 100%);
  --gradient-text-blue: linear-gradient(135deg, #0B6CFF 0%, #4D8FFF 100%);
  
  /* ========== Background Images ========== */
  --bg-hero-image: url('assets/background.png');
  
  /* ========== Shadows ========== */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.03);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);
  
  /* Colored Shadows */
  --shadow-primary: 0 10px 25px -5px rgba(11, 108, 255, 0.3);
  --shadow-success: 0 10px 25px -5px rgba(16, 185, 129, 0.3);
  --shadow-warning: 0 10px 25px -5px rgba(245, 158, 11, 0.3);
  --shadow-error: 0 10px 25px -5px rgba(239, 68, 68, 0.3);
  
  /* ========== Glassmorphism ========== */
  --glass-bg: rgba(255, 255, 255, 0.1);
  --glass-bg-light: rgba(255, 255, 255, 0.2);
  --glass-bg-dark: rgba(0, 0, 0, 0.1);
  --glass-border: rgba(255, 255, 255, 0.2);
  --glass-blur: blur(10px);
  
  /* ========== Typography ========== */
  --font-primary: 'Inter', 'Satoshi', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'Fira Code', 'Monaco', 'Consolas', monospace;
  
  /* Font Weights */
  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;
  --font-weight-black: 900;
  
  /* Font Sizes - Display */
  --font-size-display-2xl: clamp(3.5rem, 6vw, 5rem);
  --font-size-display-xl: clamp(3rem, 5vw, 4.5rem);
  --font-size-display-lg: clamp(2.5rem, 4.5vw, 4rem);
  
  /* Font Sizes - Headings */
  --font-size-h1: clamp(2rem, 4vw, 3rem);
  --font-size-h2: clamp(1.75rem, 3.5vw, 2.5rem);
  --font-size-h3: clamp(1.5rem, 3vw, 2rem);
  --font-size-h4: clamp(1.25rem, 2.5vw, 1.75rem);
  --font-size-h5: clamp(1.125rem, 2vw, 1.5rem);
  --font-size-h6: clamp(1rem, 1.5vw, 1.25rem);
  
  /* Font Sizes - Body */
  --font-size-xl: 1.25rem;
  --font-size-lg: 1.125rem;
  --font-size-base: 1rem;
  --font-size-sm: 0.875rem;
  --font-size-xs: 0.75rem;
  --font-size-2xs: 0.625rem;
  
  /* Line Heights */
  --line-height-tight: 1.2;
  --line-height-snug: 1.375;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;
  --line-height-loose: 2;
  
  /* Letter Spacing */
  --letter-spacing-tight: -0.025em;
  --letter-spacing-normal: 0;
  --letter-spacing-wide: 0.025em;
  --letter-spacing-wider: 0.05em;
  --letter-spacing-widest: 0.1em;
  
  /* ========== Spacing ========== */
  --spacing-0: 0;
  --spacing-px: 1px;
  --spacing-0-5: 0.125rem;
  --spacing-1: 0.25rem;
  --spacing-1-5: 0.375rem;
  --spacing-2: 0.5rem;
  --spacing-2-5: 0.625rem;
  --spacing-3: 0.75rem;
  --spacing-3-5: 0.875rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-7: 1.75rem;
  --spacing-8: 2rem;
  --spacing-9: 2.25rem;
  --spacing-10: 2.5rem;
  --spacing-11: 2.75rem;
  --spacing-12: 3rem;
  --spacing-14: 3.5rem;
  --spacing-16: 4rem;
  --spacing-20: 5rem;
  --spacing-24: 6rem;
  --spacing-28: 7rem;
  --spacing-32: 8rem;
  
  /* ========== Border Radius ========== */
  --radius-none: 0;
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-3xl: 1.5rem;
  --radius-full: 9999px;
  
  /* ========== Border Width ========== */
  --border-width-0: 0;
  --border-width-1: 1px;
  --border-width-2: 2px;
  --border-width-4: 4px;
  --border-width-8: 8px;
  
  /* ========== Transitions ========== */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 300ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 500ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-all: all 300ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* ========== Z-Index ========== */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
  
  /* ========== Breakpoints (for JS use) ========== */
  --breakpoint-sm: 640px;
  --breakpoint-md: 768px;
  --breakpoint-lg: 1024px;
  --breakpoint-xl: 1280px;
  --breakpoint-2xl: 1536px;
}

/* ================================================
   UTILITY CLASSES
   ================================================ */

/* Spacing Utilities */
.m-0 { margin: 0; }
.m-auto { margin: auto; }
.mt-1 { margin-top: var(--spacing-1); }
.mt-2 { margin-top: var(--spacing-2); }
.mt-3 { margin-top: var(--spacing-3); }
.mt-4 { margin-top: var(--spacing-4); }
.mt-6 { margin-top: var(--spacing-6); }
.mt-8 { margin-top: var(--spacing-8); }
.mb-1 { margin-bottom: var(--spacing-1); }
.mb-2 { margin-bottom: var(--spacing-2); }
.mb-3 { margin-bottom: var(--spacing-3); }
.mb-4 { margin-bottom: var(--spacing-4); }
.mb-6 { margin-bottom: var(--spacing-6); }
.mb-8 { margin-bottom: var(--spacing-8); }
.mx-auto { margin-left: auto; margin-right: auto; }

.p-0 { padding: 0; }
.p-2 { padding: var(--spacing-2); }
.p-3 { padding: var(--spacing-3); }
.p-4 { padding: var(--spacing-4); }
.p-6 { padding: var(--spacing-6); }
.p-8 { padding: var(--spacing-8); }

/* Text Utilities */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-xs { font-size: var(--font-size-xs); }
.text-sm { font-size: var(--font-size-sm); }
.text-base { font-size: var(--font-size-base); }
.text-lg { font-size: var(--font-size-lg); }
.text-xl { font-size: var(--font-size-xl); }

.font-light { font-weight: var(--font-weight-light); }
.font-normal { font-weight: var(--font-weight-normal); }
.font-medium { font-weight: var(--font-weight-medium); }
.font-semibold { font-weight: var(--font-weight-semibold); }
.font-bold { font-weight: var(--font-weight-bold); }

.text-primary { color: var(--primary-blue); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-error { color: var(--color-error); }
.text-muted { color: var(--gray-500); }

/* Display Utilities */
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }
.grid { display: grid; }
.hidden { display: none; }

/* Flex Utilities */
.flex-row { flex-direction: row; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }
.gap-2 { gap: var(--spacing-2); }
.gap-3 { gap: var(--spacing-3); }
.gap-4 { gap: var(--spacing-4); }
.gap-6 { gap: var(--spacing-6); }

/* Width Utilities */
.w-full { width: 100%; }
.w-auto { width: auto; }
.max-w-full { max-width: 100%; }

/* ================================================
   COMPONENT STYLES
   ================================================ */

/* ========== Buttons ========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  line-height: var(--line-height-normal);
  text-align: center;
  text-decoration: none;
  white-space: nowrap;
  border-radius: var(--radius-lg);
  border: var(--border-width-1) solid transparent;
  cursor: pointer;
  transition: var(--transition-all);
  user-select: none;
  -webkit-user-select: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.btn-primary {
  background: var(--gradient-primary);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-primary);
}

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

.btn-secondary {
  background: var(--white);
  color: var(--primary-blue);
  border-color: var(--gray-200);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background: var(--gray-50);
  border-color: var(--primary-blue);
}

.btn-outline {
  background: transparent;
  color: var(--primary-blue);
  border-color: var(--primary-blue);
}

.btn-outline:hover {
  background: var(--primary-blue);
  color: var(--white);
}

.btn-ghost {
  background: transparent;
  color: var(--gray-700);
}

.btn-ghost:hover {
  background: var(--gray-100);
}

.btn-danger {
  background: var(--color-error);
  color: var(--white);
}

.btn-danger:hover {
  background: var(--color-error-dark);
  box-shadow: var(--shadow-error);
}

.btn-success {
  background: var(--color-success);
  color: var(--white);
}

.btn-success:hover {
  background: var(--color-success-dark);
  box-shadow: var(--shadow-success);
}

/* Button Sizes */
.btn-sm {
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-sm);
}

.btn-lg {
  padding: var(--spacing-4) var(--spacing-8);
  font-size: var(--font-size-lg);
}

.btn-icon {
  padding: var(--spacing-3);
  aspect-ratio: 1;
}

/* ========== Cards ========== */
.card {
  background: var(--white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  padding: var(--spacing-6);
  transition: var(--transition-all);
  border: var(--border-width-1) solid var(--gray-100);
}

.card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-4px);
}

.card-header {
  padding-bottom: var(--spacing-4);
  border-bottom: var(--border-width-1) solid var(--gray-200);
  margin-bottom: var(--spacing-4);
}

.card-title {
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-bold);
  color: var(--gray-900);
  margin: 0;
}

.card-body {
  color: var(--gray-700);
}

.card-footer {
  padding-top: var(--spacing-4);
  border-top: var(--border-width-1) solid var(--gray-200);
  margin-top: var(--spacing-4);
}

/* Card Variants */
.card-glass {
  background: var(--glass-bg-light);
  backdrop-filter: var(--glass-blur);
  -webkit-backdrop-filter: var(--glass-blur);
  border: var(--border-width-1) solid var(--glass-border);
}

.card-gradient {
  background: var(--gradient-primary);
  color: var(--white);
  border: none;
}

.card-gradient .card-title,
.card-gradient .card-body {
  color: var(--white);
}

/* ========== Form Elements ========== */
.form-group {
  margin-bottom: var(--spacing-4);
}

.form-label {
  display: block;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--gray-700);
  margin-bottom: var(--spacing-2);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  padding: var(--spacing-3);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  color: var(--gray-900);
  background: var(--white);
  border: var(--border-width-1) solid var(--gray-300);
  border-radius: var(--radius-lg);
  transition: var(--transition-all);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(11, 108, 255, 0.1);
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--gray-400);
}

.form-textarea {
  min-height: 100px;
  resize: vertical;
}

.form-input-icon {
  position: relative;
}

.form-input-icon input {
  padding-left: var(--spacing-10);
}

.form-input-icon .icon {
  position: absolute;
  left: var(--spacing-3);
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
  pointer-events: none;
}

/* Form Validation States */
.form-input.is-valid,
.form-textarea.is-valid,
.form-select.is-valid {
  border-color: var(--color-success);
}

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

.form-feedback {
  display: block;
  margin-top: var(--spacing-1);
  font-size: var(--font-size-sm);
}

.form-feedback.valid-feedback {
  color: var(--color-success);
}

.form-feedback.invalid-feedback {
  color: var(--color-error);
}

/* Checkbox & Radio */
.form-check {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  margin-bottom: var(--spacing-2);
}

.form-check-input {
  width: 1.25rem;
  height: 1.25rem;
  cursor: pointer;
  accent-color: var(--primary-blue);
}

.form-check-label {
  font-size: var(--font-size-sm);
  color: var(--gray-700);
  cursor: pointer;
}

/* ========== Modals ========== */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: var(--z-modal-backdrop);
  display: none;
  align-items: center;
  justify-content: center;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  animation: fadeIn var(--transition-fast);
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--white);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-2xl);
  padding: var(--spacing-8);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  animation: slideUp var(--transition-normal);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-6);
}

.modal-title {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-bold);
  color: var(--gray-900);
  margin: 0;
}

.modal-close {
  background: none;
  border: none;
  font-size: var(--font-size-xl);
  color: var(--gray-400);
  cursor: pointer;
  padding: var(--spacing-1);
  line-height: 1;
  transition: var(--transition-fast);
}

.modal-close:hover {
  color: var(--gray-700);
}

.modal-body {
  margin-bottom: var(--spacing-6);
}

.modal-footer {
  display: flex;
  gap: var(--spacing-3);
  justify-content: flex-end;
}

/* ========== Alerts ========== */
.alert {
  padding: var(--spacing-4);
  border-radius: var(--radius-lg);
  border-left: var(--border-width-4) solid;
  margin-bottom: var(--spacing-4);
  display: flex;
  align-items: start;
  gap: var(--spacing-3);
}

.alert-success {
  background: var(--color-success-light);
  border-color: var(--color-success);
  color: var(--color-success-dark);
}

.alert-warning {
  background: var(--color-warning-light);
  border-color: var(--color-warning);
  color: var(--color-warning-dark);
}

.alert-error {
  background: var(--color-error-light);
  border-color: var(--color-error);
  color: var(--color-error-dark);
}

.alert-info {
  background: var(--color-info-light);
  border-color: var(--color-info);
  color: var(--color-info-dark);
}

/* ========== Badges ========== */
.badge {
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-1) var(--spacing-3);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
}

.badge-primary {
  background: var(--primary-blue);
  color: var(--white);
}

.badge-success {
  background: var(--color-success);
  color: var(--white);
}

.badge-warning {
  background: var(--color-warning);
  color: var(--white);
}

.badge-error {
  background: var(--color-error);
  color: var(--white);
}

.badge-outline {
  background: transparent;
  border: var(--border-width-1) solid currentColor;
}

/* ========== Progress Indicators ========== */
.progress {
  width: 100%;
  height: 0.5rem;
  background: var(--gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

.spinner {
  width: 2rem;
  height: 2rem;
  border: 3px solid var(--gray-200);
  border-top-color: var(--primary-blue);
  border-radius: var(--radius-full);
  animation: spin 0.8s linear infinite;
}

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

/* ========== Tables ========== */
.table {
  width: 100%;
  border-collapse: collapse;
  background: var(--white);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.table thead {
  background: var(--gray-50);
}

.table th {
  padding: var(--spacing-4);
  text-align: left;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--gray-700);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
}

.table td {
  padding: var(--spacing-4);
  border-top: var(--border-width-1) solid var(--gray-200);
  color: var(--gray-900);
}

.table tbody tr:hover {
  background: var(--gray-50);
}

/* ================================================
   ANIMATIONS
   ================================================ */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

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

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

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Animation Utilities */
.animate-fade-in {
  animation: fadeIn var(--transition-normal);
}

.animate-slide-up {
  animation: slideUp var(--transition-normal);
}

.animate-slide-down {
  animation: slideDown var(--transition-normal);
}

.animate-scale-in {
  animation: scaleIn var(--transition-normal);
}

/* ================================================
   RESPONSIVE UTILITIES
   ================================================ */
@media (max-width: 640px) {
  .sm\:hidden { display: none; }
  .sm\:block { display: block; }
  .sm\:flex { display: flex; }
  .sm\:flex-col { flex-direction: column; }
}

@media (min-width: 641px) and (max-width: 1024px) {
  .md\:hidden { display: none; }
  .md\:block { display: block; }
  .md\:flex { display: flex; }
  .md\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1025px) {
  .lg\:block { display: block; }
  .lg\:flex { display: flex; }
  .lg\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
  .lg\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
}

/* ================================================
   LIGHT MODE THEME OVERRIDE
   ================================================ */
[data-theme="light"] {
  --mode: 'light';
  
  /* Light Mode Backgrounds */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #f0f0f0;
  --bg-card: #ffffff;
  --bg-surface: #fafafa;
  
  /* Light Mode Text Colors */
  --text-primary: #1a1a1a;
  --text-secondary: #666666;
  --text-tertiary: #999999;
  --text-muted: #cccccc;
  
  /* Override Shadows for Light Mode */
  --shadow-xs: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -2px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 8px 10px -6px rgba(0, 0, 0, 0.1);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

/* Theme Transition */
* {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}