/**
 * Modern Theme - Complete UI Redesign
 * A fresh, contemporary design with gradients, smooth animations, and modern aesthetics
 */

/* Import Modern Fonts */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=Poppins:wght@400;500;600;700;800&display=swap');

/* ========================================
   DESIGN TOKENS & CSS VARIABLES
   ======================================== */

:root {
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-headings: 'Poppins', sans-serif;
  
  /* Fluid Typography */
  --font-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --font-sm: clamp(0.875rem, 0.8rem + 0.375vw, 1rem);
  --font-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --font-lg: clamp(1.125rem, 1rem + 0.625vw, 1.5rem);
  --font-xl: clamp(1.5rem, 1.3rem + 1vw, 2rem);
  --font-2xl: clamp(2rem, 1.7rem + 1.5vw, 3rem);
  --font-3xl: clamp(2.5rem, 2rem + 2.5vw, 4rem);
  
  /* Font Weights */
  --fw-light: 300;
  --fw-normal: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --fw-extrabold: 800;
  
  /* Primary Colors - Indigo/Purple Gradient */
  --color-primary: #6366f1;
  --color-primary-light: #818cf8;
  --color-primary-dark: #4f46e5;
  --color-primary-darker: #4338ca;
  
  /* Secondary Colors - Pink */
  --color-secondary: #ec4899;
  --color-secondary-light: #f472b6;
  --color-secondary-dark: #db2777;
  
  /* Accent Colors - Teal */
  --color-accent: #14b8a6;
  --color-accent-light: #2dd4bf;
  --color-accent-dark: #0f766e;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
  --gradient-accent: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
  --gradient-success: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
  --gradient-warm: linear-gradient(135deg, #fa709a 0%, #fee140 100%);
  --gradient-cool: linear-gradient(135deg, #30cfd0 0%, #330867 100%);
  
  /* Neutral Colors - Slate Palette */
  --color-dark: #1e293b;
  --color-dark-light: #334155;
  --color-medium: #64748b;
  --color-medium-light: #94a3b8;
  --color-light: #cbd5e1;
  --color-light-dark: #e2e8f0;
  --color-ultra-light: #f1f5f9;
  --color-white: #ffffff;
  
  /* Status Colors */
  --color-success: #10b981;
  --color-success-light: #34d399;
  --color-warning: #f59e0b;
  --color-warning-light: #fbbf24;
  --color-error: #ef4444;
  --color-error-light: #f87171;
  --color-info: #3b82f6;
  --color-info-light: #60a5fa;
  
  /* Spacing Scale (4px base) */
  --space-0: 0;
  --space-1: 0.25rem;   /* 4px */
  --space-2: 0.5rem;    /* 8px */
  --space-3: 0.75rem;   /* 12px */
  --space-4: 1rem;      /* 16px */
  --space-5: 1.25rem;   /* 20px */
  --space-6: 1.5rem;    /* 24px */
  --space-8: 2rem;      /* 32px */
  --space-10: 2.5rem;   /* 40px */
  --space-12: 3rem;     /* 48px */
  --space-16: 4rem;     /* 64px */
  --space-20: 5rem;     /* 80px */
  --space-24: 6rem;     /* 96px */
  
  /* Border Radius */
  --radius-sm: 0.375rem;   /* 6px */
  --radius-md: 0.75rem;    /* 12px */
  --radius-lg: 1rem;       /* 16px */
  --radius-xl: 1.5rem;     /* 24px */
  --radius-2xl: 2rem;      /* 32px */
  --radius-full: 9999px;
  
  /* Shadows - Elevation System */
  --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);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 0, 0, 0.05);
  
  /* Colored Shadows */
  --shadow-primary: 0 10px 30px -5px rgba(99, 102, 241, 0.3);
  --shadow-secondary: 0 10px 30px -5px rgba(236, 72, 153, 0.3);
  --shadow-accent: 0 10px 30px -5px rgba(20, 184, 166, 0.3);
  --shadow-success: 0 10px 30px -5px rgba(16, 185, 129, 0.3);
  
  /* 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-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* Container */
  --container-max: 1200px;
  --container-padding: var(--space-6);
}

/* ========================================
   GLOBAL RESETS & BASE STYLES
   ======================================== */

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

body {
  font-family: var(--font-primary);
  font-size: var(--font-base);
  font-weight: var(--fw-normal);
  line-height: 1.6;
  color: var(--color-dark);
  background: var(--color-ultra-light);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headings);
  font-weight: var(--fw-bold);
  line-height: 1.2;
  margin-bottom: var(--space-4);
  color: var(--color-dark);
}

h1 { font-size: var(--font-3xl); }
h2 { font-size: var(--font-2xl); }
h3 { font-size: var(--font-xl); }
h4 { font-size: var(--font-lg); }
h5 { font-size: var(--font-base); }
h6 { font-size: var(--font-sm); }

p {
  margin-bottom: var(--space-4);
  color: var(--color-medium);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-base);
}

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

/* ========================================
   MODERN FORM CONTAINER
   ======================================== */

.gla-form-container {
  max-width: 500px;
  margin: var(--space-12) auto;
  padding: var(--space-8);
  background: var(--color-white);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
  animation: fadeInUp 0.5s ease-out;
}

.gla-form-container h2 {
  text-align: center;
  font-size: var(--font-2xl);
  font-weight: var(--fw-extrabold);
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: var(--space-2);
}

.gla-form-container h3 {
  font-size: var(--font-lg);
  font-weight: var(--fw-semibold);
  color: var(--color-dark);
  margin-top: var(--space-8);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--color-ultra-light);
}

.gla-form-subtitle {
  text-align: center;
  color: var(--color-medium);
  font-size: var(--font-sm);
  margin-bottom: var(--space-8);
}

/* ========================================
   MODERN FORM ELEMENTS
   ======================================== */

.gla-form {
  width: 100%;
}

.gla-form p {
  margin-bottom: var(--space-6);
}

.gla-form label {
  display: block;
  font-size: var(--font-sm);
  font-weight: var(--fw-medium);
  color: var(--color-dark);
  margin-bottom: var(--space-2);
  transition: color var(--transition-base);
}

.gla-form input[type="text"],
.gla-form input[type="email"],
.gla-form input[type="password"],
.gla-form input[type="url"],
.gla-form input[type="number"],
.gla-form select,
.gla-form textarea {
  width: 100%;
  padding: var(--space-4) var(--space-5);
  font-size: var(--font-base);
  font-family: var(--font-primary);
  color: var(--color-dark);
  background: var(--color-ultra-light);
  border: 2px solid transparent;
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  outline: none;
}

.gla-form input:focus,
.gla-form select:focus,
.gla-form textarea:focus {
  background: var(--color-white);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.1);
  transform: translateY(-1px);
}

.gla-form input::placeholder,
.gla-form textarea::placeholder {
  color: var(--color-medium-light);
}

.gla-form textarea {
  resize: vertical;
  min-height: 120px;
}

.gla-form select {
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2364748b'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-4) center;
  background-size: 1.5em;
  padding-right: var(--space-10);
  appearance: none;
}

.gla-form-hint {
  display: block;
  font-size: var(--font-xs);
  color: var(--color-medium-light);
  margin-top: var(--space-2);
}

.required {
  color: var(--color-error);
  font-weight: var(--fw-semibold);
}

/* Form Rows */
.gla-form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.gla-form-col {
  flex: 1;
}

/* ========================================
   MODERN BUTTONS
   ======================================== */

.gla-button,
.gla-form input[type="submit"],
.gla-form button[type="submit"] {
  display: inline-block;
  width: 100%;
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-base);
  font-weight: var(--fw-semibold);
  font-family: var(--font-primary);
  text-align: center;
  color: var(--color-white);
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.gla-button:hover,
.gla-form input[type="submit"]:hover,
.gla-form button[type="submit"]:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-primary);
}

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

/* Button Variants */
.gla-button-secondary {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
  box-shadow: none;
}

.gla-button-secondary:hover {
  background: var(--color-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-primary);
}

.gla-button-ghost {
  background: transparent;
  color: var(--color-medium);
  box-shadow: none;
}

.gla-button-ghost:hover {
  background: var(--color-ultra-light);
  color: var(--color-dark);
}

.gla-button-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-sm);
}

.gla-button-lg {
  padding: var(--space-5) var(--space-10);
  font-size: var(--font-lg);
}

/* ========================================
   MESSAGES & ALERTS
   ======================================== */

.gla-message {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-6);
  font-size: var(--font-sm);
  font-weight: var(--fw-medium);
  animation: slideDown 0.3s ease-out;
}

.gla-message.success {
  background: linear-gradient(135deg, #d1fae5 0%, #a7f3d0 100%);
  color: var(--color-success-dark, #065f46);
  border-left: 4px solid var(--color-success);
}

.gla-message.error {
  background: linear-gradient(135deg, #fee2e2 0%, #fecaca 100%);
  color: var(--color-error-dark, #991b1b);
  border-left: 4px solid var(--color-error);
}

.gla-message.warning {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  color: var(--color-warning-dark, #92400e);
  border-left: 4px solid var(--color-warning);
}

.gla-message.info {
  background: linear-gradient(135deg, #dbeafe 0%, #bfdbfe 100%);
  color: var(--color-info-dark, #1e40af);
  border-left: 4px solid var(--color-info);
}

/* ========================================
   MODERN CARDS
   ======================================== */

.gla-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  border: 1px solid var(--color-light-dark);
}

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

.gla-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 2px solid var(--color-ultra-light);
}

.gla-card-title {
  font-size: var(--font-lg);
  font-weight: var(--fw-semibold);
  color: var(--color-dark);
  margin: 0;
}

.gla-card-body {
  color: var(--color-medium);
}

/* ========================================
   BADGES & PILLS
   ======================================== */

.gla-badge {
  display: inline-block;
  padding: var(--space-1) var(--space-3);
  font-size: var(--font-xs);
  font-weight: var(--fw-semibold);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.gla-badge-success {
  background: var(--color-success-light);
  color: var(--color-success-dark, #065f46);
}

.gla-badge-warning {
  background: var(--color-warning-light);
  color: var(--color-warning-dark, #92400e);
}

.gla-badge-error {
  background: var(--color-error-light);
  color: var(--color-error-dark, #991b1b);
}

.gla-badge-info {
  background: var(--color-info-light);
  color: var(--color-info-dark, #1e40af);
}

.gla-badge-primary {
  background: var(--color-primary-light);
  color: var(--color-primary-darker);
}

/* ========================================
   PROGRESS INDICATORS
   ======================================== */

.gla-progress {
  width: 100%;
  height: 8px;
  background: var(--color-light-dark);
  border-radius: var(--radius-full);
  overflow: hidden;
  margin: var(--space-4) 0;
}

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

/* ========================================
   MODERN STEPPER
   ======================================== */

.gla-stepper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin: var(--space-8) 0;
  padding: 0 var(--space-4);
}

.gla-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  flex: 1;
  position: relative;
}

.gla-step-circle {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-full);
  background: var(--color-light);
  color: var(--color-medium);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--fw-bold);
  font-size: var(--font-lg);
  transition: all var(--transition-base);
  z-index: 2;
  position: relative;
}

.gla-step.active .gla-step-circle {
  background: var(--gradient-primary);
  color: var(--color-white);
  box-shadow: var(--shadow-primary);
  transform: scale(1.1);
}

.gla-step.completed .gla-step-circle {
  background: var(--color-success);
  color: var(--color-white);
}

.gla-step-label {
  margin-top: var(--space-2);
  font-size: var(--font-sm);
  font-weight: var(--fw-medium);
  color: var(--color-medium);
  text-align: center;
}

.gla-step.active .gla-step-label {
  color: var(--color-primary);
  font-weight: var(--fw-semibold);
}

.gla-step-line {
  position: absolute;
  top: 24px;
  left: 50%;
  width: 100%;
  height: 2px;
  background: var(--color-light);
  z-index: 1;
}

.gla-step.completed .gla-step-line {
  background: var(--color-success);
}

.gla-step:last-child .gla-step-line {
  display: none;
}

/* ========================================
   CHECKBOX & RADIO CUSTOM STYLES
   ======================================== */

.gla-form input[type="checkbox"],
.gla-form input[type="radio"] {
  width: auto;
  margin-right: var(--space-2);
  accent-color: var(--color-primary);
  cursor: pointer;
}

.gla-form label:has(input[type="checkbox"]),
.gla-form label:has(input[type="radio"]) {
  display: flex;
  align-items: center;
  cursor: pointer;
  font-weight: var(--fw-normal);
}

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

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

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

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-0 { margin-top: 0; }
.mt-2 { margin-top: var(--space-2); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */

@media (max-width: 768px) {
  .gla-form-container {
    margin: var(--space-6) var(--space-4);
    padding: var(--space-6);
  }
  
  .gla-form-row {
    grid-template-columns: 1fr;
  }
  
  .gla-stepper {
    flex-direction: column;
    gap: var(--space-4);
  }
  
  .gla-step-line {
    display: none;
  }
}

/* ========================================
   DARK MODE SUPPORT (Optional)
   ======================================== */

@media (prefers-color-scheme: dark) {
  :root {
    --color-dark: #f1f5f9;
    --color-medium: #cbd5e1;
    --color-light: #475569;
    --color-ultra-light: #1e293b;
    --color-white: #0f172a;
  }
  
  body {
    background: #0f172a;
  }
  
  .gla-form-container,
  .gla-card {
    background: #1e293b;
    border-color: #334155;
  }
  
  .gla-form input,
  .gla-form select,
  .gla-form textarea {
    background: #0f172a;
    color: #f1f5f9;
  }
}