/* ==========================================================================
   LaserFrame - Design System & Styles
   Mobile-First, WCAG 2.2 AA Compliant
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. CSS Custom Properties (Design Tokens)
   -------------------------------------------------------------------------- */
:root {
  /* Colors - Primary */
  --color-primary: #48a43e;
  --color-primary-light: #5cb950;
  --color-primary-dark: #3a8a32;
  --color-primary-rgb: 72, 164, 62;

  /* Colors - Neutrals (Dark Theme) */
  --color-bg-dark: #0a0a0a;
  --color-bg-surface: #111111;
  --color-bg-elevated: #1a1a1a;
  --color-bg-hover: #222222;

  /* Colors - Text */
  --color-text-primary: #ffffff;
  --color-text-secondary: #b3b3b3;
  --color-text-muted: #808080;

  /* Colors - State */
  --color-focus: #48a43e;
  --color-error: #e53935;
  --color-success: #48a43e;
  --color-warning: #ffa726;

  /* Typography - Font Families */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Consolas, monospace;

  /* Typography - Font Sizes (fluid) */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.9rem + 0.5vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.6vw, 1.25rem);
  --text-xl: clamp(1.25rem, 1.1rem + 0.8vw, 1.5rem);
  --text-2xl: clamp(1.5rem, 1.2rem + 1.5vw, 2rem);
  --text-3xl: clamp(1.875rem, 1.4rem + 2.5vw, 2.5rem);
  --text-4xl: clamp(2.25rem, 1.6rem + 3.5vw, 3.5rem);

  /* Typography - Line Heights */
  --leading-tight: 1.2;
  --leading-snug: 1.35;
  --leading-normal: 1.6;
  --leading-relaxed: 1.75;

  /* Typography - Font Weights */
  --font-normal: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;

  /* Spacing Scale */
  --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;
  --space-24: 6rem;

  /* Layout */
  --container-max: 1200px;
  --container-narrow: 800px;
  --header-height: 64px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 20px rgba(72, 164, 62, 0.3);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;

  /* Z-Index Scale */
  --z-base: 1;
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-modal: 300;
  --z-toast: 400;
}

/* --------------------------------------------------------------------------
   2. Reset & Base Styles
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

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

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

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: var(--leading-normal);
  color: var(--color-text-primary);
  background-color: var(--color-bg-dark);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

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

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

a:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

button {
  font-family: inherit;
  font-size: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

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

ul,
ol {
  list-style: none;
}

/* Skip Link */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4);
  z-index: var(--z-toast);
  padding: var(--space-3) var(--space-4);
  background: var(--color-primary);
  color: var(--color-text-primary);
  font-weight: var(--font-semibold);
  border-radius: var(--radius-md);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}

/* --------------------------------------------------------------------------
   3. Container & Layout
   -------------------------------------------------------------------------- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (min-width: 600px) {
  .container {
    padding: 0 var(--space-6);
  }
}

@media (min-width: 1024px) {
  .container {
    padding: 0 var(--space-8);
  }
}

/* --------------------------------------------------------------------------
   4. Header & Navigation
   -------------------------------------------------------------------------- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-sticky);
  height: var(--header-height);
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.header__logo {
  display: flex;
  align-items: center;
}

.header__logo img {
  height: 32px;
  width: auto;
}

.header__toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  padding: var(--space-1);
  background: transparent;
}

.header__toggle-bar {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: var(--radius-full);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.header__toggle[aria-expanded="true"] .header__toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.header__toggle[aria-expanded="true"] .header__toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav {
  position: fixed;
  top: var(--header-height);
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-bg-dark);
  padding: var(--space-8) var(--space-4);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  overflow-y: auto;
}

.nav.is-open {
  transform: translateX(0);
}

.nav__list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.nav__link {
  display: block;
  padding: var(--space-4);
  font-size: var(--text-lg);
  font-weight: var(--font-medium);
  color: var(--color-text-primary);
  border-radius: var(--radius-md);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.nav__link:hover,
.nav__link:focus {
  background: var(--color-bg-hover);
  color: var(--color-primary);
}

.nav__link--cta {
  margin-top: var(--space-4);
  background: var(--color-primary);
  text-align: center;
}

.nav__link--cta:hover,
.nav__link--cta:focus {
  background: var(--color-primary-light);
  color: var(--color-text-primary);
}

/* Desktop Navigation */
@media (min-width: 768px) {
  .header__toggle {
    display: none;
  }

  .nav {
    position: static;
    padding: 0;
    background: transparent;
    transform: none;
  }

  .nav__list {
    flex-direction: row;
    align-items: center;
    gap: var(--space-1);
  }

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

  .nav__link--cta {
    margin-top: 0;
    margin-left: var(--space-2);
  }
}

/* --------------------------------------------------------------------------
   5. Buttons
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  line-height: 1;
  text-align: center;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
}

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

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

.btn--primary:hover {
  background: var(--color-primary-light);
  color: var(--color-text-primary);
  box-shadow: var(--shadow-glow);
}

.btn--primary:active {
  transform: scale(0.98);
}

.btn--secondary {
  background: var(--color-bg-elevated);
  color: var(--color-text-primary);
  border: 1px solid rgba(255, 255, 255, 0.2);
}

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

.btn--large {
  padding: var(--space-4) var(--space-8);
  font-size: var(--text-lg);
}

.btn__icon {
  flex-shrink: 0;
}

/* --------------------------------------------------------------------------
   6. Section Base Styles
   -------------------------------------------------------------------------- */
.section {
  padding: var(--space-16) 0;
}

@media (min-width: 768px) {
  .section {
    padding: var(--space-20) 0;
  }
}

@media (min-width: 1024px) {
  .section {
    padding: var(--space-24) 0;
  }
}

.section__title {
  font-size: var(--text-3xl);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-8);
  text-align: center;
}

.section__title::after {
  content: '';
  display: block;
  width: 60px;
  height: 3px;
  background: var(--color-primary);
  margin: var(--space-4) auto 0;
  border-radius: var(--radius-full);
}

.section__intro {
  max-width: var(--container-narrow);
  margin: 0 auto var(--space-10);
  text-align: center;
  color: var(--color-text-secondary);
  font-size: var(--text-lg);
}

/* --------------------------------------------------------------------------
   7. Hero Section with Background Slider
   -------------------------------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--header-height);
  overflow: hidden;
}

/* Background Image Slider */
.hero__slider {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero__slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  opacity: 0;
  transition: opacity 1.5s ease-in-out;
}

.hero__slide--active {
  opacity: 1;
}

/* Dark Overlay for Text Readability */
.hero__overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(
    135deg,
    rgba(0, 0, 0, 0.75) 0%,
    rgba(0, 0, 0, 0.5) 50%,
    rgba(0, 0, 0, 0.65) 100%
  );
}

/* Optional: Add subtle green accent glow */
.hero__overlay::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 40%;
  background: linear-gradient(
    to top,
    rgba(var(--color-primary-rgb), 0.1) 0%,
    transparent 100%
  );
  pointer-events: none;
}

.hero__inner {
  position: relative;
  z-index: 2;
  padding: var(--space-12) 0;
}

.hero__content {
  max-width: 700px;
}

.hero__title {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-6);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.hero__title span {
  color: var(--color-primary);
}

.hero__subtitle {
  font-size: var(--text-xl);
  color: var(--color-text-primary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-8);
  text-shadow: 0 1px 5px rgba(0, 0, 0, 0.5);
  opacity: 0.95;
}

@media (prefers-reduced-motion: reduce) {
  .hero__slide {
    transition: none;
  }
}

@media (min-width: 768px) {
  .hero__inner {
    padding: var(--space-16) 0;
  }
}

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

.about__content {
  max-width: var(--container-narrow);
  margin: 0 auto;
}

.about__text {
  color: var(--color-text-secondary);
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
}

.about__text:last-child {
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   9. Services Section
   -------------------------------------------------------------------------- */
.section--services {
  background: var(--color-bg-dark);
}

.services__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
}

@media (min-width: 600px) {
  .services__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .services__grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-8);
  }
}

.service-card {
  padding: var(--space-6);
  background: var(--color-bg-surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-lg);
  transition: transform var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

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

@media (prefers-reduced-motion: reduce) {
  .service-card:hover {
    transform: none;
  }
}

.service-card__icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin-bottom: var(--space-4);
  background: rgba(var(--color-primary-rgb), 0.1);
  border-radius: var(--radius-md);
  color: var(--color-primary);
}

.service-card__title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-3);
}

.service-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
}

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

.gallery {
  position: relative;
  max-width: 900px;
  margin: 0 auto var(--space-8);
}

.gallery__viewport {
  overflow: hidden;
  border-radius: var(--radius-lg);
}

.gallery__track {
  display: flex;
  transition: transform var(--transition-slow);
}

.gallery__slide {
  flex: 0 0 100%;
  min-width: 0;
}

.gallery__image {
  width: 100%;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background: var(--color-bg-elevated);
}

.gallery__controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-6);
}

.gallery__btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--color-bg-elevated);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-full);
  color: var(--color-text-primary);
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.gallery__btn:hover {
  background: var(--color-bg-hover);
  border-color: var(--color-primary);
}

.gallery__btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.gallery__dots {
  display: flex;
  gap: var(--space-2);
}

.gallery__dot {
  width: 10px;
  height: 10px;
  background: var(--color-bg-hover);
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--transition-fast), transform var(--transition-fast);
}

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

.gallery__dot.is-active {
  background: var(--color-primary);
  transform: scale(1.2);
}

.gallery__showcase {
  text-align: center;
}

/* --------------------------------------------------------------------------
   11. Contact Section
   -------------------------------------------------------------------------- */
.section--contact {
  background: var(--color-bg-dark);
}

.contact__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-10);
  max-width: var(--container-narrow);
  margin: 0 auto var(--space-10);
}

@media (min-width: 768px) {
  .contact__grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-12);
  }
}

.contact__info {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.contact__item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

.contact__icon {
  flex-shrink: 0;
  color: var(--color-primary);
}

.contact__label {
  display: block;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-1);
}

.contact__link {
  font-size: var(--text-lg);
  font-weight: var(--font-medium);
  color: var(--color-text-primary);
}

.contact__link:hover {
  color: var(--color-primary);
}

.contact__link--phone {
  font-variant-numeric: tabular-nums;
}

.contact__text {
  font-size: var(--text-lg);
  color: var(--color-text-primary);
}

.contact__social-title {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-4);
}

.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}

.social-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-4);
  background: var(--color-bg-surface);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.social-link:hover {
  background: var(--color-bg-hover);
  border-color: var(--color-primary);
  color: var(--color-text-primary);
}

.social-link__label {
  display: none;
}

@media (min-width: 600px) {
  .social-link__label {
    display: inline;
  }
}

.contact__cta {
  text-align: center;
}

/* --------------------------------------------------------------------------
   12. Footer
   -------------------------------------------------------------------------- */
.footer {
  padding: var(--space-12) 0 var(--space-8);
  background: var(--color-bg-surface);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-6);
  text-align: center;
}

.footer__logo {
  height: 28px;
  width: auto;
  opacity: 0.8;
}

.footer__tagline {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.footer__nav {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4) var(--space-6);
}

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

.footer__link:hover {
  color: var(--color-primary);
}

.footer__legal {
  display: flex;
  gap: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__link--legal {
  font-weight: var(--font-medium);
}

.footer__copyright {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}

/* --------------------------------------------------------------------------
   13. Modal
   -------------------------------------------------------------------------- */
.modal {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
}

.modal[hidden] {
  display: none;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  backdrop-filter: blur(4px);
}

.modal__content {
  position: relative;
  width: 100%;
  max-width: 700px;
  max-height: 85vh;
  overflow-y: auto;
  background: var(--color-bg-surface);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

@media (min-width: 600px) {
  .modal__content {
    padding: var(--space-8);
  }
}

.modal__close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: var(--color-bg-hover);
  border-radius: var(--radius-full);
  color: var(--color-text-secondary);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.modal__close:hover {
  background: var(--color-bg-elevated);
  color: var(--color-text-primary);
}

.modal__title {
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-6);
  padding-right: var(--space-10);
}

.modal__body h3 {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  margin-top: var(--space-6);
  margin-bottom: var(--space-3);
  color: var(--color-primary);
}

.modal__body h4 {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  margin-top: var(--space-4);
  margin-bottom: var(--space-2);
}

.modal__body p {
  color: var(--color-text-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-4);
}

.modal__body a {
  word-break: break-all;
}

.modal__note {
  margin-top: var(--space-8);
  padding: var(--space-4);
  background: rgba(var(--color-primary-rgb), 0.1);
  border-left: 3px solid var(--color-primary);
  border-radius: var(--radius-sm);
  font-size: var(--text-sm);
}

/* --------------------------------------------------------------------------
   14. Utility Classes
   -------------------------------------------------------------------------- */
.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;
}

/* Focus visible polyfill fallback */
.js-focus-visible :focus:not(.focus-visible) {
  outline: none;
}

/* Print styles */
@media print {
  .header,
  .hero__visual,
  .gallery__controls,
  .btn,
  .modal {
    display: none !important;
  }

  body {
    background: white;
    color: black;
  }

  .section {
    padding: 1rem 0;
    break-inside: avoid;
  }
}