/* ============================================
   SQLIFY - Custom Styling (No Bootstrap)
   Vibrant Dracula-inspired theme with Dark Mode
   ============================================ */

:root {
  /* Light Mode Colors */
  --primary-color: #8b5cf6;      /* Vibrant purple */
  --primary-dark: #7c3aed;       /* Darker purple for hover */
  --secondary-color: #06b6d4;    /* Cyan/blue */
  --secondary-dark: #0891b2;     /* Darker cyan */
  --success-color: #10b981;      /* Green */
  --danger-color: #ef4444;       /* Red */
  --warning-color: #f59e0b;      /* Amber */
  
  /* Light Mode Backgrounds & Text */
  --bg-primary: #f8fafc;         /* Very light gray */
  --bg-secondary: #ffffff;       /* White */
  --text-primary: #1e293b;       /* Dark gray/near black */
  --text-secondary: #64748b;     /* Medium gray */
  --text-muted: #94a3b8;         /* Light gray */
  --border-color: #e2e8f0;       /* Light border */
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen',
    'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue',
    sans-serif;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  
  /* Transitions */
  --transition-base: all 0.2s ease-in-out;
}

/* Dark Mode */
@media (prefers-color-scheme: dark) {
  :root {
    --primary-color: #a78bfa;     /* Lighter purple for dark mode */
    --primary-dark: #c4b5fd;      /* Even lighter for hover */
    --secondary-color: #22d3ee;   /* Brighter cyan */
    --secondary-dark: #06b6d4;    /* Darker cyan for hover */
    --success-color: #34d399;     /* Brighter green */
    --danger-color: #f87171;      /* Lighter red */
    --warning-color: #fbbf24;     /* Lighter amber */
    
    --bg-primary: #0f172a;        /* Very dark blue */
    --bg-secondary: #1e293b;      /* Dark gray */
    --text-primary: #f1f5f9;      /* Almost white */
    --text-secondary: #cbd5e1;    /* Light gray */
    --text-muted: #94a3b8;        /* Medium gray */
    --border-color: #334155;      /* Dark border */
  }
}

/* ============================================
   GLOBAL STYLES
   ============================================ */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
  transition: var(--transition-base);
}

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

h1, h2, h3, h4, h5, h6 {
  line-height: 1.2;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

h2 {
  font-size: var(--font-size-2xl);
}

small {
  font-size: var(--font-size-sm);
}

.text-muted {
  color: var(--text-muted);
}

/* ============================================
   LINKS
   ============================================ */

a {
  color: var(--text-primary);
  text-decoration: underline;
  transition: var(--transition-base);
  font-weight: 500;
}

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

/* ============================================
   CONTAINER & LAYOUT
   ============================================ */

.container {
  width: 100%;
  max-width: 100%;
  padding: 0 var(--spacing-lg);
  margin: 0 auto;
}

@media (min-width: 768px) {
  .container {
    max-width: 750px;
  }
}

@media (min-width: 1024px) {
  .container {
    max-width: 960px;
  }
}

@media (min-width: 1280px) {
  .container {
    max-width: 1140px;
  }
}

/* ============================================
   FLEXBOX UTILITIES
   ============================================ */

.row {
  display: flex;
  flex-wrap: wrap;
  margin-right: calc(var(--spacing-md) * -0.5);
  margin-left: calc(var(--spacing-md) * -0.5);
}

.col {
  flex: 1 0 0%;
  padding-right: calc(var(--spacing-md) * 0.5);
  padding-left: calc(var(--spacing-md) * 0.5);
}

.col-md-auto {
  flex: 0 0 auto;
  width: auto;
  padding-right: calc(var(--spacing-md) * 0.5);
  padding-left: calc(var(--spacing-md) * 0.5);
}

.pt-5 {
  padding-top: 3rem;
}

.pt-3 {
  padding-top: 1rem;
}

.py-2 {
  padding-top: var(--spacing-md);
  padding-bottom: var(--spacing-md);
}

.pl-1 {
  padding-left: var(--spacing-sm);
}

.mt-4 {
  margin-top: var(--spacing-xl);
}

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

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

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

.form-group {
  margin-bottom: var(--spacing-xl);
}

.form-control {
  display: block;
  width: 100%;
  padding: var(--spacing-md);
  font-size: var(--font-size-base);
  line-height: 1.5;
  color: var(--text-primary);
  background-color: var(--bg-secondary);
  border: 2px solid var(--border-color);
  border-radius: 0.5rem;
  transition: var(--transition-base);
  font-family: var(--font-family);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.form-control::placeholder {
  color: var(--text-muted);
}

.form-control[readonly] {
  background-color: var(--bg-primary);
  opacity: 0.8;
}

textarea.form-control {
  resize: vertical;
  font-family: 'Courier New', monospace;
  font-size: var(--font-size-sm);
}

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

/* Base button shell with subtle elevation and gap for icons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: calc(var(--spacing-sm) * 1.4) var(--spacing-lg);
  font-size: var(--font-size-base);
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  border-radius: 0.75rem;
  transition: transform 180ms cubic-bezier(.2,.9,.3,1), box-shadow 180ms ease, background 180ms ease;
  white-space: nowrap;
  user-select: none;
  font-family: var(--font-family);
  will-change: transform, box-shadow;
  padding-top: 0.6rem;
  padding-bottom: 0.6rem;
}

/* Lift and soft shadow on hover, subtle press reset on active */
.btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 25px rgba(2,6,23,0.12), 0 2px 6px rgba(2,6,23,0.06);
}

.btn:active {
  transform: translateY(0);
  box-shadow: 0 4px 10px rgba(2,6,23,0.08);
}

/* Focus ring for accessibility */
.btn:focus {
  outline: none;
  box-shadow: 0 0 0 4px rgba(139,92,246,0.18);
}

/* Primary - vibrant gradient with glass highlight */
.btn-primary {
  background-image: linear-gradient(135deg, var(--primary-color) 0%, color-mix(in srgb, var(--primary-color) 75%, black 15%) 100%);
  color: white;
  border-color: rgba(255,255,255,0.06);
}

.btn-primary:hover {
  background-image: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary-color) 100%);
}

/* Secondary - cyan glass button */
.btn-secondary {
  background: linear-gradient(180deg, color-mix(in srgb, var(--secondary-color) 88%, white 12%) 0%, var(--secondary-color) 100%);
  color: white;
  border-color: rgba(255,255,255,0.04);
}

.btn-secondary:hover {
  background: linear-gradient(180deg, var(--secondary-dark) 0%, var(--secondary-color) 100%);
}

/* Danger - elevated red with subtle inset */
.btn-danger {
  background: linear-gradient(180deg, var(--danger-color) 0%, color-mix(in srgb, var(--danger-color) 80%, black 8%) 100%);
  color: white;
  border-color: rgba(0,0,0,0.08);
}

.btn-danger:hover {
  filter: brightness(0.95);
}

/* Decorative icon circle for better visual weight */
.btn i.fa {
  display: inline-grid;
  place-items: center;
  width: 1.6rem;
  height: 1.6rem;
  background: rgba(255,255,255,0.08);
  border-radius: 999px;
  font-size: 0.9rem;
  transition: background 140ms ease, transform 140ms ease;
}

.btn:hover i.fa { transform: translateY(-1px); background: rgba(255,255,255,0.12); }

/* Small glossy sheen using pseudo-element */
.btn::after {
  content: '';
  position: absolute;
  pointer-events: none;
  inset: 0;
  border-radius: 0.75rem;
  background: linear-gradient(180deg, rgba(255,255,255,0.06), transparent 35%);
  mix-blend-mode: screen;
  opacity: 0.6;
}

/* Keep pseudo-element from breaking layout (requires relative parent) */
.btn { position: relative; z-index: 0; }
.btn::after { z-index: 0; }
.btn > * { position: relative; z-index: 1; }

/* Validation states */
.btn.is-valid,
.form-control.is-valid {
  border-color: var(--success-color);
  box-shadow: 0 0 0 4px rgba(16, 185, 129, 0.14);
}

/* ============================================
   TOOLBAR & BUTTON GROUPS
   ============================================ */

.btn-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  padding: var(--spacing-sm) 0;
}

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

.btn-group {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-md);
  role: group;
}

@media (max-width: 767px) {
  .btn-toolbar {
    justify-content: stretch;
  }
  
  .btn-toolbar .btn-group {
    flex-direction: column;
    width: 100%;
  }
  
  .btn-toolbar .btn-group .btn {
    width: 100%;
    justify-content: center;
  }
}

/* ============================================
   FOOTER
   ============================================ */

footer {
  padding: var(--spacing-xl) var(--spacing-lg);
  text-align: center;
  color: var(--text-secondary);
  margin-top: auto;
}

footer i {
  margin-right: var(--spacing-sm);
}

footer small {
  display: block;
  margin-top: var(--spacing-md);
}

/* ============================================
   ICON STYLING
   ============================================ */

i.fa {
  margin-right: var(--spacing-sm);
}

/* ============================================
   RESPONSIVE ADJUSTMENTS
   ============================================ */

@media (max-width: 767px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .row {
    margin-right: calc(var(--spacing-sm) * -0.5);
    margin-left: calc(var(--spacing-sm) * -0.5);
  }
  
  .col,
  .col-md-auto {
    padding-right: calc(var(--spacing-sm) * 0.5);
    padding-left: calc(var(--spacing-sm) * 0.5);
  }
  
  .pt-5 {
    padding-top: 1.5rem;
  }
  
  .text-right {
    text-align: left;
  }
  
  h2 {
    font-size: var(--font-size-xl);
  }
  
  .btn {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
  }
}

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

.text-truncate {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.shadow {
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

/* Print styles */
@media print {
  body {
    background-color: white;
  }
  
  .btn {
    border: 1px solid #000;
    background-color: white;
    color: #000;
  }
}