/* FitTrack Landing Page - Main Stylesheet */
/* Production-ready CSS with complete design system integration */

/* ============================================
   IMPORT ORDER - Critical for cascade
   ============================================
   
   1. reset.css - Normalize browser defaults
   2. variables.css - Design tokens and CSS custom properties
   3. typography.css - Font system and text styles
   4. utilities.css - Utility classes for layout and spacing
   5. styles.css (this file) - Global styles and components
   
   This order ensures proper cascade and prevents specificity issues.
*/

@import url('./reset.css');
@import url('./variables.css');
@import url('./typography.css');
@import url('./utilities.css');

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

/* Body - Foundation styles */
body {
  background-color: var(--color-background);
  color: var(--color-text-primary);
  font-family: var(--font-family-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

/* Main content wrapper */
main {
  flex: 1 0 auto;
  width: 100%;
}

/* ============================================
   CONTAINER SYSTEM
   ============================================ */

/* Primary container with responsive padding */
.container {
  width: 100%;
  max-width: var(--container-7xl);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

@media (width >= 640px) {
  .container {
    padding-inline: var(--space-6);
  }
}

@media (width >= 768px) {
  .container {
    padding-inline: var(--space-8);
  }
}

@media (width >= 1024px) {
  .container {
    padding-inline: var(--space-12);
  }
}

/* Narrow container for content-focused sections */
.container-narrow {
  width: 100%;
  max-width: var(--container-4xl);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

/* Wide container for full-width sections */
.container-wide {
  width: 100%;
  max-width: var(--container-full);
  margin-inline: auto;
  padding-inline: var(--space-4);
}

/* ============================================
   SECTION SPACING
   ============================================ */

/* Standard section padding */
section {
  padding-block: var(--space-fluid-xl);
}

@media (width >= 768px) {
  section {
    padding-block: var(--space-fluid-2xl);
  }
}

@media (width >= 1024px) {
  section {
    padding-block: var(--space-fluid-3xl);
  }
}

/* Section with background */
.section-bg {
  background-color: var(--color-surface);
}

/* Section with gradient background */
.section-gradient {
  background: linear-gradient(
    135deg,
    var(--color-primary-50) 0%,
    var(--color-secondary-50) 100%
  );
}

/* ============================================
   BUTTON COMPONENTS
   ============================================ */

/* Base button styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-family-display);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  text-decoration: none;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition-all);
  white-space: nowrap;
  user-select: none;
}

.btn:focus-visible {
  outline: 2px solid var(--color-primary-500);
  outline-offset: 2px;
}

.btn:active {
  transform: translateY(1px);
}

/* Primary button - Main CTA */
.btn-primary {
  background-color: var(--color-primary-600);
  color: var(--color-neutral-0);
  box-shadow: var(--shadow-primary);
}

.btn-primary:hover {
  background-color: var(--color-primary-700);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.btn-primary:active {
  background-color: var(--color-primary-800);
  box-shadow: var(--shadow-sm);
  transform: translateY(0);
}

/* Secondary button */
.btn-secondary {
  background-color: var(--color-secondary-600);
  color: var(--color-neutral-0);
  box-shadow: var(--shadow-secondary);
}

.btn-secondary:hover {
  background-color: var(--color-secondary-700);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

/* Outline button */
.btn-outline {
  background-color: transparent;
  color: var(--color-primary-600);
  border: 2px solid var(--color-primary-600);
  box-shadow: none;
}

.btn-outline:hover {
  background-color: var(--color-primary-50);
  border-color: var(--color-primary-700);
  color: var(--color-primary-700);
}

/* Large button variant */
.btn-lg {
  padding: var(--space-4) var(--space-8);
  font-size: var(--font-size-lg);
}

/* Small button variant */
.btn-sm {
  padding: var(--space-2) var(--space-4);
  font-size: var(--font-size-sm);
}

/* Disabled button state */
.btn:disabled,
.btn[aria-disabled="true"] {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* ============================================
   CARD COMPONENTS
   ============================================ */

/* Base card styles */
.card {
  background-color: var(--color-surface-elevated);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-base);
  transition: var(--transition-all);
  container-type: inline-size;
  container-name: card;
}

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

/* Card with border */
.card-bordered {
  border: 1px solid var(--color-border);
}

/* Card header */
.card-header {
  margin-block-end: var(--space-4);
  padding-block-end: var(--space-4);
  border-block-end: 1px solid var(--color-border-light);
}

/* Card body */
.card-body {
  padding-block: var(--space-4);
}

/* Card footer */
.card-footer {
  margin-block-start: var(--space-4);
  padding-block-start: var(--space-4);
  border-block-start: 1px solid var(--color-border-light);
}

/* ============================================
   BADGE COMPONENTS
   ============================================ */

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-1) var(--space-2);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  border-radius: var(--radius-full);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
}

.badge-primary {
  background-color: var(--color-primary-100);
  color: var(--color-primary-800);
}

.badge-secondary {
  background-color: var(--color-secondary-100);
  color: var(--color-secondary-800);
}

.badge-accent {
  background-color: var(--color-accent-100);
  color: var(--color-accent-800);
}

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

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

/* Input fields */
.input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-family: var(--font-family-body);
  font-size: var(--font-size-base);
  line-height: var(--line-height-normal);
  color: var(--color-text-primary);
  background-color: var(--color-surface-elevated);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: var(--transition-colors);
}

.input:hover {
  border-color: var(--color-border-strong);
}

.input:focus {
  outline: none;
  border-color: var(--color-primary-500);
  box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

.input::placeholder {
  color: var(--color-text-tertiary);
}

/* Textarea */
.textarea {
  min-height: 120px;
  resize: vertical;
}

/* Select dropdown */
.select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-3) center;
  padding-inline-end: var(--space-10);
}

/* Form label */
.label {
  display: block;
  margin-block-end: var(--space-2);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

/* Form group */
.form-group {
  margin-block-end: var(--space-6);
}

/* ============================================
   HERO SECTION STYLES
   ============================================ */

.hero {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 100vh;
  min-height: 100dvh;
  padding-block: var(--space-20);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(
    circle at 30% 20%,
    rgba(255, 107, 53, 0.1) 0%,
    transparent 50%
  ),
  radial-gradient(
    circle at 70% 80%,
    rgba(0, 168, 120, 0.1) 0%,
    transparent 50%
  );
  z-index: -1;
}

/* ============================================
   FEATURE GRID
   ============================================ */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(300px, 100%), 1fr));
  gap: var(--space-8);
}

@media (width >= 768px) {
  .feature-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (width >= 1024px) {
  .feature-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* ============================================
   ICON STYLES
   ============================================ */

.icon {
  display: inline-block;
  width: 1.5rem;
  height: 1.5rem;
  fill: currentColor;
  vertical-align: middle;
}

.icon-lg {
  width: 2rem;
  height: 2rem;
}

.icon-xl {
  width: 3rem;
  height: 3rem;
}

/* ============================================
   DIVIDER
   ============================================ */

.divider {
  height: 1px;
  background-color: var(--color-border-light);
  border: none;
  margin-block: var(--space-8);
}

/* ============================================
   LOADING STATES
   ============================================ */

.loading {
  position: relative;
  pointer-events: none;
  opacity: 0.6;
}

.loading::after {
  content: '';
  position: absolute;
  inset: 0;
  background: inherit;
  display: grid;
  place-items: center;
}

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

@keyframes fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

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

.animate-fade-in {
  animation: fade-in var(--transition-duration-slow) var(--transition-timing-ease-out);
}

.animate-slide-up {
  animation: slide-up var(--transition-duration-slow) var(--transition-timing-ease-out);
}

/* ============================================
   DARK MODE ADJUSTMENTS
   ============================================ */

@media (prefers-color-scheme: dark) {
  .section-gradient {
    background: linear-gradient(
      135deg,
      var(--color-primary-900) 0%,
      var(--color-secondary-900) 100%
    );
  }
  
  .card {
    background-color: var(--color-surface);
  }
  
  .input,
  .select,
  .textarea {
    background-color: var(--color-surface);
  }
}

/* ============================================
   REDUCED MOTION SUPPORT
   ============================================ */

@media (prefers-reduced-motion: reduce) {
  .btn,
  .card,
  .input {
    transition: none;
  }
  
  .animate-fade-in,
  .animate-slide-up {
    animation: none;
  }
}

/* ============================================
   PRINT STYLES
   ============================================ */

@media print {
  .btn,
  .badge {
    border: 1px solid currentColor;
  }
  
  .card {
    box-shadow: none;
    border: 1px solid var(--color-border);
  }
  
  .hero::before {
    display: none;
  }
}