/* ==========================================================================
   LS Metal Works - Global Styles
   ========================================================================== */

/* Design Tokens
   ========================================================================== */

:root {
  --color-primary: #0f172a;
  --color-secondary: #334155;
  --color-accent: #f97316;
  --color-accent-dark: #ea580c;
  --color-background: #ffffff;
  --color-surface: #f8fafc;
  --color-text: #1e293b;
  --color-text-muted: #64748b;
  --color-border: #e2e8f0;
  --color-white: #ffffff;

  --font-heading: "Poppins", system-ui, sans-serif;
  --font-body: "Inter", system-ui, 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;
  --font-size-3xl: clamp(1.875rem, 5vw, 2.5rem);
  --font-size-4xl: clamp(2.25rem, 7vw, 3.5rem);

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-full: 9999px;

  --shadow-sm: 0 1px 3px rgb(15 23 42 / 0.08);
  --shadow-md: 0 8px 24px rgb(15 23 42 / 0.12);
  --shadow-header: 0 8px 30px rgb(15 23 42 / 0.1);

  --transition-fast: 160ms ease;
  --transition-base: 250ms ease;

  --container-width: 75rem;
  --container-gutter: 1rem;
  --header-height: 4.75rem;
  --section-padding: clamp(4rem, 8vw, 7rem);
}

/* Reset
   ========================================================================== */

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

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

body {
  min-height: 100vh;
  background: var(--color-background);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  line-height: 1.6;
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
}

body.menu-open {
  overflow: hidden;
}

#header {
  min-height: var(--header-height);
}

ul,
ol {
  list-style: none;
}

a {
  color: inherit;
  text-decoration: none;
}

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

button {
  border: 0;
  background: none;
  cursor: pointer;
}

img,
picture,
svg {
  display: block;
  max-width: 100%;
}

img {
  height: auto;
  object-position: center;
  object-fit: cover;
}

/* Base Typography
   ========================================================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  text-wrap: balance;
}

h1 {
  font-size: var(--font-size-4xl);
}

h2 {
  font-size: var(--font-size-3xl);
}

h3 {
  font-size: var(--font-size-2xl);
}

p {
  text-wrap: pretty;
}

/* Layout and Utilities
   ========================================================================== */

.container {
  width: min(100% - (var(--container-gutter) * 2), var(--container-width));
  margin-inline: auto;
}

.section {
  padding-block: var(--section-padding);
}

#home,
#about,
#services,
#projects,
#contact {
  scroll-margin-top: calc(var(--header-height) + var(--space-4));
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-accent-dark);
  font-size: var(--font-size-sm);
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.section-eyebrow::before {
  width: 2rem;
  height: 2px;
  background: var(--color-accent);
  content: "";
}

.section-heading-centered {
  text-align: center;
}

.section-heading-centered .section-eyebrow {
  justify-content: center;
}

.section-heading-centered .section-eyebrow::after {
  width: 2rem;
  height: 2px;
  background: var(--color-accent);
  content: "";
}

.section-heading-centered h2 {
  margin-top: var(--space-3);
}

.section-heading-centered > p:last-child {
  margin-top: var(--space-5);
  color: var(--color-text-muted);
  font-size: var(--font-size-lg);
  line-height: 1.8;
}

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

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

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

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

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

/* Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  min-height: 3rem;
  padding: 0.75rem 1.25rem;
  border: 1px solid transparent;
  border-radius: var(--radius-md);
  font-weight: 700;
  line-height: 1.15;
  user-select: none;
  white-space: nowrap;
  transition:
    color var(--transition-base),
    background-color var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-base);
}

.btn:hover {
  transform: translateY(-2px);
}

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

.btn-primary {
  background: var(--color-accent);
  color: var(--color-white);
  box-shadow: 0 8px 20px rgb(249 115 22 / 0.22);
}

.btn-primary:hover {
  background: var(--color-accent-dark);
  box-shadow: 0 10px 24px rgb(249 115 22 / 0.3);
}

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

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

/* Accessibility
   ========================================================================== */

:focus-visible {
  outline: 3px solid var(--color-accent);
  outline-offset: 3px;
}

.skip-link {
  position: fixed;
  top: var(--space-3);
  left: var(--space-3);
  z-index: 1000;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-md);
  background: var(--color-accent);
  color: var(--color-white);
  font-weight: 700;
  transform: translateY(-160%);
  transition: transform var(--transition-fast);
}

.skip-link:focus {
  transform: translateY(0);
}

/* Header
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  min-height: var(--header-height);
  border-bottom: 1px solid transparent;
  background: rgb(255 255 255 / 0.98);
  backdrop-filter: blur(1rem);
  transition:
    min-height var(--transition-base),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.site-header.is-scrolled {
  border-color: var(--color-border);
  box-shadow: var(--shadow-header);
}

.header-container {
  display: flex;
  min-height: inherit;
  align-items: center;
  justify-content: space-between;
}

.site-logo {
  display: inline-flex;
  flex-shrink: 0;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.site-logo-image {
  display: block;
  width: auto;
  height: clamp(2.6rem, 5vw, 3.4rem);
  max-width: min(12rem, 44vw);
  object-fit: contain;
}

.menu-toggle {
  position: relative;
  z-index: 2;
  display: inline-flex;
  width: 3rem;
  height: 3rem;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.32rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-primary);
  transition:
    border-color var(--transition-fast),
    background-color var(--transition-fast);
}

.menu-toggle:hover {
  border-color: var(--color-accent);
  background: var(--color-surface);
}

.menu-toggle-line {
  width: 1.35rem;
  height: 2px;
  border-radius: var(--radius-full);
  background: currentColor;
  transition:
    opacity var(--transition-base),
    transform var(--transition-base);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-line:nth-child(1) {
  transform: translateY(0.43rem) rotate(45deg);
}

.menu-toggle[aria-expanded="true"] .menu-toggle-line:nth-child(2) {
  opacity: 0;
}

.menu-toggle[aria-expanded="true"] .menu-toggle-line:nth-child(3) {
  transform: translateY(-0.43rem) rotate(-45deg);
}

.primary-navigation {
  position: absolute;
  top: 100%;
  left: 0;
  width: 100%;
  max-height: calc(100vh - var(--header-height));
  padding: var(--space-4) var(--container-gutter) var(--space-6);
  overflow-y: auto;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-background);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-0.75rem);
  transition:
    opacity var(--transition-base),
    visibility var(--transition-base),
    transform var(--transition-base);
}

.primary-navigation.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.navigation-list {
  display: flex;
  flex-direction: column;
}

.navigation-item {
  position: relative;
}

.navigation-dropdown-trigger {
  display: flex;
  align-items: stretch;
  border-bottom: 1px solid var(--color-border);
}

.navigation-dropdown-trigger .navigation-link {
  flex: 1;
  border-bottom: 0;
}

.navigation-dropdown-toggle {
  display: grid;
  width: 3rem;
  flex: 0 0 3rem;
  place-items: center;
  color: var(--color-secondary);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.navigation-dropdown-toggle:hover,
.navigation-dropdown-toggle[aria-expanded="true"] {
  background: var(--color-surface);
  color: var(--color-accent-dark);
}

.navigation-dropdown-toggle svg {
  transition: transform var(--transition-base);
}

.navigation-dropdown-toggle[aria-expanded="true"] svg {
  transform: rotate(180deg);
}

.navigation-dropdown-menu {
  display: none;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0.25rem;
  padding: var(--space-3) 0 var(--space-4) var(--space-4);
  border-bottom: 1px solid var(--color-border);
}

.navigation-dropdown.is-open .navigation-dropdown-menu {
  display: grid;
}

.location-navigation-link {
  display: block;
  padding: 0.65rem 0.75rem;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  font-weight: 600;
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.location-navigation-link:hover,
.location-navigation-link.is-active {
  background: rgb(249 115 22 / 0.08);
  color: var(--color-accent-dark);
}

.navigation-link {
  position: relative;
  display: block;
  padding: 0.9rem 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-secondary);
  font-weight: 600;
  transition:
    color var(--transition-fast),
    padding-left var(--transition-fast);
}

.navigation-link:hover,
.navigation-link.is-active {
  padding-left: var(--space-2);
  color: var(--color-accent);
}

.header-call-button {
  width: 100%;
  margin-top: var(--space-5);
}

.button-icon {
  flex: 0 0 auto;
}

.call-label,
.call-number {
  display: block;
}

.call-label {
  margin-bottom: 0.12rem;
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.call-number {
  white-space: nowrap;
  font-size: var(--font-size-sm);
}

/* Fixed Page Controls
   ========================================================================== */

.floating-whatsapp,
.back-to-top {
  position: fixed;
  right: max(1rem, env(safe-area-inset-right));
  z-index: 90;
  display: grid;
  width: 3.25rem;
  height: 3.25rem;
  place-items: center;
  border-radius: 50%;
  color: var(--color-white);
  box-shadow: 0 0.8rem 1.8rem rgb(15 23 42 / 0.22);
}

.floating-whatsapp {
  bottom: max(1rem, env(safe-area-inset-bottom));
  background: #25d366;
  transition:
    background-color var(--transition-base),
    box-shadow var(--transition-base),
    transform var(--transition-base);
}

.floating-whatsapp:hover {
  background: #1fb458;
  box-shadow: 0 1rem 2rem rgb(37 211 102 / 0.3);
  transform: translateY(-0.2rem) scale(1.03);
}

.back-to-top {
  bottom: calc(max(1rem, env(safe-area-inset-bottom)) + 4rem);
  border: 1px solid rgb(255 255 255 / 0.2);
  background: var(--color-primary);
  opacity: 0;
  pointer-events: none;
  transform: translateY(0.75rem);
  visibility: hidden;
  transition:
    background-color var(--transition-base),
    opacity var(--transition-base),
    transform var(--transition-base),
    visibility var(--transition-base);
}

.back-to-top:hover {
  background: var(--color-accent);
}

.back-to-top.is-visible {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0);
  visibility: visible;
}

/* Motion Preferences
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    scroll-behavior: auto !important;
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
  }
}