/* ==========================================================================
   Base Styles — Beckley Electrical
   Reset, grid system, responsive utilities, animations
   ========================================================================== */

/* ==========================================================================
   RESET
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-body);
  font-weight: var(--weight-regular);
  line-height: var(--leading-body);
  color: var(--text-primary);
  background-color: var(--surface-page);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  overflow-x: hidden;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
  height: auto;
}

input,
button,
textarea,
select {
  font: inherit;
  color: inherit;
}

button {
  cursor: pointer;
  border: none;
  background: none;
}

a {
  color: var(--text-link);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--text-link-hover);
}

a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

ul,
ol {
  list-style: none;
}

h1, h2, h3, h4, h5, h6 {
  overflow-wrap: break-word;
  line-height: 1.2;
}

p {
  overflow-wrap: break-word;
  max-width: 65ch;
}

table {
  border-collapse: collapse;
  border-spacing: 0;
}

/* Remove default fieldset styles */
fieldset {
  border: none;
  padding: 0;
  margin: 0;
}

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

.text-display {
  font-size: var(--text-display);
  font-weight: var(--weight-extrabold);
  line-height: var(--leading-display);
  letter-spacing: -0.02em;
}

h1, .text-h1 {
  font-size: var(--text-h1);
  font-weight: var(--weight-bold);
  line-height: var(--leading-h1);
}

h2, .text-h2 {
  font-size: var(--text-h2);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-h2);
}

h3, .text-h3 {
  font-size: var(--text-h3);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-h3);
}

h4, .text-h4 {
  font-size: var(--text-h4);
  font-weight: var(--weight-semibold);
  line-height: var(--leading-h4);
}

.text-body { font-size: var(--text-body); }
.text-sm   { font-size: var(--text-sm);   }
.text-caption {
  font-size: var(--text-caption);
  line-height: var(--leading-caption);
}

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

.text-primary   { color: var(--text-primary); }
.text-secondary { color: var(--text-secondary); }
.text-tertiary  { color: var(--text-tertiary); }
.text-inverse   { color: var(--text-inverse); }
.text-accent    { color: var(--color-accent); }

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

/* ==========================================================================
   LAYOUT — Container
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-xl);
  margin-left: auto;
  margin-right: auto;
  padding-left: var(--space-md);
  padding-right: var(--space-md);
}

@media (min-width: 768px) {
  .container {
    padding-left: var(--space-lg);
    padding-right: var(--space-lg);
  }
}

@media (min-width: 1280px) {
  .container {
    padding-left: var(--space-xl);
    padding-right: var(--space-xl);
  }
}

.container--sm { max-width: var(--container-sm); }
.container--md { max-width: var(--container-md); }
.container--lg { max-width: var(--container-lg); }

/* ==========================================================================
   GRID SYSTEM — 12-column CSS Grid
   ========================================================================== */

.grid {
  display: grid;
  gap: var(--grid-gap);
}

.grid--2  { grid-template-columns: repeat(1, 1fr); }
.grid--3  { grid-template-columns: repeat(1, 1fr); }
.grid--4  { grid-template-columns: repeat(1, 1fr); }

@media (min-width: 640px) {
  .grid--2 { grid-template-columns: repeat(2, 1fr); }
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 768px) {
  .grid--3 { grid-template-columns: repeat(3, 1fr); }
}

@media (min-width: 1024px) {
  .grid--4  { grid-template-columns: repeat(4, 1fr); }
  .grid--12 { grid-template-columns: repeat(12, 1fr); }
}

/* Span utilities */
.col-span-2  { grid-column: span 2; }
.col-span-3  { grid-column: span 3; }
.col-span-4  { grid-column: span 4; }
.col-span-6  { grid-column: span 6; }
.col-span-8  { grid-column: span 8; }
.col-span-12 { grid-column: span 12; }

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

.flex        { display: flex; }
.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-end    { justify-content: flex-end; }
.gap-xs  { gap: var(--space-xs); }
.gap-sm  { gap: var(--space-sm); }
.gap-md  { gap: var(--space-md); }
.gap-lg  { gap: var(--space-lg); }
.gap-xl  { gap: var(--space-xl); }

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

/* Margin */
.mt-xs  { margin-top: var(--space-xs); }
.mt-sm  { margin-top: var(--space-sm); }
.mt-md  { margin-top: var(--space-md); }
.mt-lg  { margin-top: var(--space-lg); }
.mt-xl  { margin-top: var(--space-xl); }
.mt-2xl { margin-top: var(--space-2xl); }
.mt-3xl { margin-top: var(--space-3xl); }

.mb-xs  { margin-bottom: var(--space-xs); }
.mb-sm  { margin-bottom: var(--space-sm); }
.mb-md  { margin-bottom: var(--space-md); }
.mb-lg  { margin-bottom: var(--space-lg); }
.mb-xl  { margin-bottom: var(--space-xl); }
.mb-2xl { margin-bottom: var(--space-2xl); }

/* Padding */
.p-sm  { padding: var(--space-sm); }
.p-md  { padding: var(--space-md); }
.p-lg  { padding: var(--space-lg); }
.p-xl  { padding: var(--space-xl); }

.py-sm  { padding-top: var(--space-sm);  padding-bottom: var(--space-sm); }
.py-md  { padding-top: var(--space-md);  padding-bottom: var(--space-md); }
.py-lg  { padding-top: var(--space-lg);  padding-bottom: var(--space-lg); }
.py-xl  { padding-top: var(--space-xl);  padding-bottom: var(--space-xl); }
.py-2xl { padding-top: var(--space-2xl); padding-bottom: var(--space-2xl); }
.py-3xl { padding-top: var(--space-3xl); padding-bottom: var(--space-3xl); }

.px-sm  { padding-left: var(--space-sm);  padding-right: var(--space-sm); }
.px-md  { padding-left: var(--space-md);  padding-right: var(--space-md); }
.px-lg  { padding-left: var(--space-lg);  padding-right: var(--space-lg); }

/* ==========================================================================
   SECTIONS
   ========================================================================== */

.section {
  padding-top: var(--space-2xl);
  padding-bottom: var(--space-2xl);
}

@media (min-width: 768px) {
  .section {
    padding-top: var(--space-3xl);
    padding-bottom: var(--space-3xl);
  }
}

.section--alt {
  background-color: var(--surface-elevated);
}

.section--dark {
  background-color: var(--color-primary-900);
  color: var(--text-inverse);
}

.section-header {
  margin-bottom: var(--space-xl);
}

.section-header h2 {
  margin-bottom: var(--space-sm);
}

.section-header p {
  color: var(--text-secondary);
  font-size: var(--text-h4);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  font-weight: var(--weight-semibold);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  white-space: nowrap;
  text-decoration: none;
  line-height: 1;
}

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

/* Sizes */
.btn--sm {
  height: 36px;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--text-sm);
}

.btn--md {
  height: 44px;
  padding: 10px 20px;
  font-size: var(--text-body);
}

.btn--lg {
  height: 48px;
  padding: 12px var(--space-lg);
  font-size: var(--text-h4);
}

/* Variants */
.btn--primary {
  background-color: var(--color-primary);
  color: var(--text-inverse);
}

.btn--primary:hover {
  background-color: var(--color-primary-dark);
  color: var(--text-inverse);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn--secondary {
  background-color: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn--secondary:hover {
  background-color: var(--color-primary);
  color: var(--text-inverse);
}

.btn--accent {
  background-color: var(--color-accent);
  color: var(--color-neutral-900);
}

.btn--accent:hover {
  background-color: var(--color-accent-700);
  color: var(--color-neutral-900);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

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

.btn--ghost:hover {
  background-color: var(--color-primary-50);
}

.btn--white {
  background-color: #ffffff;
  color: var(--color-primary);
}

.btn--white:hover {
  background-color: var(--color-neutral-100);
  transform: translateY(-1px);
  box-shadow: var(--shadow-lg);
}

.btn[disabled] {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

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

.card {
  background: var(--surface-card);
  border-radius: var(--radius-xl);
  padding: var(--space-lg);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

.card--bordered {
  box-shadow: none;
  border: var(--border-light);
}

.card--bordered:hover {
  border-color: var(--color-primary-200);
  box-shadow: var(--shadow-md);
}

.card__title {
  font-size: var(--text-h4);
  font-weight: var(--weight-semibold);
  margin-bottom: var(--space-sm);
}

.card__text {
  color: var(--text-secondary);
  font-size: var(--text-sm);
}

.card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-primary-50);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-md);
  color: var(--color-primary);
}

/* ==========================================================================
   FORMS
   ========================================================================== */

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

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  color: var(--text-primary);
  margin-bottom: var(--space-xs);
}

.form-input,
.form-textarea,
.form-select {
  width: 100%;
  height: 44px;
  padding: var(--space-sm) 12px;
  border: 1px solid var(--color-neutral-300);
  border-radius: var(--radius-md);
  background: var(--surface-card);
  font-size: var(--text-body);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

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

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-100);
  outline: none;
}

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

.form-error {
  font-size: var(--text-caption);
  color: var(--color-error);
  margin-top: var(--space-xs);
}

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

/* Scroll reveal — elements start hidden, JS adds .is-visible */
.scroll-reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.scroll-reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.scroll-reveal.stagger > *:nth-child(1) { transition-delay: 0ms; }
.scroll-reveal.stagger > *:nth-child(2) { transition-delay: 100ms; }
.scroll-reveal.stagger > *:nth-child(3) { transition-delay: 200ms; }
.scroll-reveal.stagger > *:nth-child(4) { transition-delay: 300ms; }
.scroll-reveal.stagger > *:nth-child(5) { transition-delay: 400ms; }
.scroll-reveal.stagger > *:nth-child(6) { transition-delay: 500ms; }

/* Fade in */
.fade-in {
  animation: fadeIn 0.5s ease forwards;
}

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

/* Fade in up */
.fade-in-up {
  animation: fadeInUp 0.6s ease forwards;
}

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

/* Slide in from left */
.slide-in-left {
  animation: slideInLeft 0.5s ease forwards;
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

/* Hover lift */
.hover-lift {
  transition: transform var(--transition-base), box-shadow var(--transition-base);
}

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

/* Pulse for CTA elements */
.pulse {
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { transform: scale(1); }
  50%      { transform: scale(1.03); }
}

/* Respect reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .scroll-reveal {
    opacity: 1;
    transform: none;
  }
}

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

/* Display */
.hidden    { display: none !important; }
.block     { display: block; }
.inline    { display: inline; }

/* Show/hide at breakpoints */
@media (max-width: 639px) {
  .hide-mobile { display: none !important; }
}

@media (min-width: 640px) and (max-width: 767px) {
  .hide-sm { display: none !important; }
}

@media (max-width: 767px) {
  .hide-below-md { display: none !important; }
}

@media (min-width: 768px) {
  .hide-md-up { display: none !important; }
}

@media (max-width: 1023px) {
  .hide-below-lg { display: none !important; }
}

@media (min-width: 1024px) {
  .hide-lg-up { display: none !important; }
}

/* Width utilities */
.w-full { width: 100%; }
.max-w-prose { max-width: 65ch; }

/* Overflow */
.overflow-hidden { overflow: hidden; }

/* Aspect ratios */
.aspect-video { aspect-ratio: 16 / 9; }
.aspect-square { aspect-ratio: 1 / 1; }

/* SR only */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border-width: 0;
}

/* Object fit for images */
.object-cover {
  object-fit: cover;
  width: 100%;
  height: 100%;
}

/* ==========================================================================
   MISC
   ========================================================================== */

/* Separator */
.separator {
  border: none;
  border-top: 1px solid var(--color-neutral-200);
  margin: var(--space-xl) 0;
}

/* Badge */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: var(--radius-full);
  font-size: var(--text-caption);
  font-weight: var(--weight-medium);
  line-height: var(--leading-caption);
}

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

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

.badge--success {
  background: var(--color-success-100);
  color: var(--color-success-700);
}