/* JVST Digital Limited - Swiss-Inspired Corporate Website */

/* Light Mode (default) */
:root {
  --color-primary: #0a0a0a;
  --color-secondary: #1a1a1a;
  --color-text: #0a0a0a;
  --color-text-light: #555555;
  --color-text-muted: #888888;
  --color-background: #ffffff;
  --color-background-alt: #fafafa;
  --color-border: #e8e8e8;
  --color-accent: #0a0a0a;
  --header-bg: rgba(255, 255, 255, 0.95);
  --font-primary: "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-serif: Georgia, "Times New Roman", serif;
  --max-width: 1200px;
  --content-width: 800px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 8rem;
  --spacing-xxl: 12rem;
}

/* Dark Mode */
[data-theme="dark"] {
  --color-primary: #ffffff;
  --color-secondary: #e0e0e0;
  --color-text: #ffffff;
  --color-text-light: #a0a0a0;
  --color-text-muted: #707070;
  --color-background: #0a0a0a;
  --color-background-alt: #141414;
  --color-border: #2a2a2a;
  --color-accent: #ffffff;
  --header-bg: rgba(10, 10, 10, 0.95);
}

/* Reset and Base */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  color: var(--color-text);
  background-color: var(--color-background);
  line-height: 1.7;
  font-weight: 300;
  letter-spacing: 0.01em;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.3s ease, color 0.3s ease;
}

::selection {
  background-color: var(--color-primary);
  color: var(--color-background);
}

/* Typography */
h1, h2, h3, h4 {
  font-weight: 300;
  line-height: 1.2;
  color: var(--color-primary);
  letter-spacing: -0.02em;
  transition: color 0.3s ease;
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: var(--spacing-md);
}

h2 {
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  margin-bottom: var(--spacing-md);
}

h3 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
  font-weight: 400;
}

p {
  margin-bottom: var(--spacing-sm);
  color: var(--color-text-light);
  font-size: 1.0625rem;
  max-width: 65ch;
  transition: color 0.3s ease;
}

a {
  color: var(--color-accent);
  text-decoration: none;
  transition: opacity 0.2s ease, color 0.3s ease;
}

a:hover {
  opacity: 0.6;
}

/* Layout */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.container--narrow {
  max-width: var(--content-width);
}

/* Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background-color: var(--header-bg);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--spacing-sm) 0;
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

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

/* Animated Logo */
.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.logo:hover {
  opacity: 1;
}

.logo-mark {
  width: 36px;
  height: 36px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-mark svg {
  width: 100%;
  height: 100%;
}

.logo-square {
  fill: none;
  stroke: var(--color-primary);
  stroke-width: 1.5;
  transition: stroke 0.3s ease, fill 0.3s ease;
}

.logo-letter {
  fill: var(--color-primary);
  font-family: var(--font-primary);
  font-size: 11px;
  font-weight: 400;
  letter-spacing: 0.1em;
  transition: fill 0.3s ease;
}

/* Logo Animation */
.logo:hover .logo-square {
  fill: var(--color-primary);
}

.logo:hover .logo-letter {
  fill: var(--color-background);
}

.logo-text {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--color-primary);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  transition: color 0.3s ease;
}

/* Navigation */
.nav-wrapper {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

/* Hamburger Menu Toggle */
.menu-toggle {
  display: none;
  width: 36px;
  height: 36px;
  background: transparent;
  border: 1px solid var(--color-border);
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  padding: 8px;
  transition: border-color 0.3s ease;
}

.menu-toggle:hover {
  border-color: var(--color-primary);
}

.menu-bar {
  display: block;
  width: 18px;
  height: 1.5px;
  background-color: var(--color-primary);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

/* Hamburger to X animation */
.menu-toggle.active .menu-bar:first-child {
  transform: translateY(3.75px) rotate(45deg);
}

.menu-toggle.active .menu-bar:last-child {
  transform: translateY(-3.75px) rotate(-45deg);
}

nav ul {
  display: flex;
  list-style: none;
  gap: var(--spacing-lg);
}

nav a {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  text-decoration: none;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  transition: color 0.2s ease;
}

nav a:hover,
nav a.active {
  color: var(--color-primary);
  opacity: 1;
}

/* Theme Toggle */
.theme-toggle {
  width: 40px;
  height: 40px;
  border: 1px solid var(--color-border);
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.3s ease, background-color 0.2s ease;
  position: relative;
  overflow: hidden;
}

.theme-toggle:hover {
  border-color: var(--color-primary);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
  position: absolute;
  transition: transform 0.4s ease, opacity 0.4s ease;
}

.theme-toggle .sun-icon {
  stroke: var(--color-primary);
  fill: none;
  stroke-width: 2;
  opacity: 0;
  transform: rotate(-90deg) scale(0.5);
}

.theme-toggle .moon-icon {
  stroke: var(--color-primary);
  fill: none;
  stroke-width: 2;
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

[data-theme="dark"] .theme-toggle .sun-icon {
  opacity: 1;
  transform: rotate(0deg) scale(1);
}

[data-theme="dark"] .theme-toggle .moon-icon {
  opacity: 0;
  transform: rotate(90deg) scale(0.5);
}

/* Main Content */
main {
  padding-top: 60px;
}

/* Sections */
section {
  padding: var(--spacing-xxl) 0;
  border-bottom: 1px solid var(--color-border);
  transition: border-color 0.3s ease;
}

section:last-of-type {
  border-bottom: none;
}

.section-number {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-lg);
  font-weight: 400;
  transition: color 0.3s ease;
}

.section-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-sm);
  font-weight: 400;
  transition: color 0.3s ease;
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--spacing-xxl) 0;
  border-bottom: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

/* Particle Animation Canvas */
.hero-canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  opacity: 0.4;
  transition: opacity 0.3s ease;
}

[data-theme="dark"] .hero-canvas {
  opacity: 0.3;
}

.hero-content {
  max-width: 900px;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 200;
  line-height: 1.1;
  margin-bottom: var(--spacing-sm);
  letter-spacing: -0.03em;
}

.hero-tagline {
  font-size: 1.25rem;
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
  margin-bottom: var(--spacing-lg);
  font-weight: 300;
}

.hero-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-light);
  max-width: 600px;
  line-height: 1.8;
  margin-bottom: var(--spacing-lg);
}

.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-lg);
  left: var(--spacing-md);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  transition: color 0.3s ease;
}

.scroll-indicator::before {
  content: "";
  display: block;
  width: 40px;
  height: 1px;
  background-color: var(--color-text-muted);
  transition: background-color 0.3s ease;
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.service-item {
  padding-right: var(--spacing-md);
}

.service-number {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
  letter-spacing: 0.05em;
  transition: color 0.3s ease;
}

.service-item h3 {
  font-size: 1.125rem;
  font-weight: 400;
  margin-bottom: var(--spacing-sm);
  color: var(--color-primary);
}

.service-item p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* Two Column Layout */
.two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
  align-items: start;
}

.two-column--wide-left {
  grid-template-columns: 2fr 1fr;
}

.two-column--wide-right {
  grid-template-columns: 1fr 2fr;
}

/* Notice Box */
.notice {
  background-color: var(--color-background-alt);
  padding: var(--spacing-lg);
  margin-top: var(--spacing-xl);
  border-left: 2px solid var(--color-primary);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

.notice p {
  font-size: 0.9375rem;
  margin-bottom: var(--spacing-xs);
  color: var(--color-text-light);
}

.notice p:last-child {
  margin-bottom: 0;
}

/* List Styles */
.styled-list {
  list-style: none;
  margin: var(--spacing-md) 0;
}

.styled-list li {
  padding: var(--spacing-sm) 0;
  border-bottom: 1px solid var(--color-border);
  font-size: 1rem;
  color: var(--color-text-light);
  display: flex;
  align-items: baseline;
  gap: var(--spacing-md);
  transition: border-color 0.3s ease, color 0.3s ease;
}

.styled-list li:last-child {
  border-bottom: none;
}

.styled-list .list-number {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  min-width: 30px;
  transition: color 0.3s ease;
}

/* Contact Section */
.contact-details {
  margin-top: var(--spacing-lg);
}

.contact-item {
  margin-bottom: var(--spacing-md);
}

.contact-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--spacing-xs);
  transition: color 0.3s ease;
}

.contact-value {
  font-size: 1.0625rem;
  color: var(--color-text);
  transition: color 0.3s ease;
}

.contact-value a {
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 2px;
  transition: border-color 0.2s ease, color 0.3s ease;
}

.contact-value a:hover {
  border-color: var(--color-primary);
  opacity: 1;
}

/* Button */
.btn {
  display: inline-block;
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: var(--spacing-sm) var(--spacing-md);
  border: 1px solid var(--color-primary);
  color: var(--color-primary);
  background-color: transparent;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
}

.btn:hover {
  background-color: var(--color-primary);
  color: var(--color-background);
  opacity: 1;
}

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

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

/* Footer */
footer {
  background-color: var(--color-background);
  padding: var(--spacing-lg) 0;
  border-top: 1px solid var(--color-border);
  transition: background-color 0.3s ease, border-color 0.3s ease;
}

footer .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-text {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.03em;
  transition: color 0.3s ease;
}

.footer-links {
  display: flex;
  gap: var(--spacing-md);
}

.footer-links a {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

/* Page Headers (for multi-page) */
.page-hero {
  padding: var(--spacing-xxl) 0 var(--spacing-xl);
  border-bottom: 1px solid var(--color-border);
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 200;
}

/* About Content */
.about-content {
  max-width: 700px;
}

.about-content p {
  font-size: 1.0625rem;
  margin-bottom: var(--spacing-md);
}

.about-content h2 {
  font-size: 1.25rem;
  margin-top: var(--spacing-xl);
  margin-bottom: var(--spacing-md);
  font-weight: 400;
}

/* Responsive */
@media (max-width: 968px) {
  :root {
    --spacing-xl: 6rem;
    --spacing-xxl: 8rem;
  }

  .services-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .service-item {
    padding-right: 0;
    padding-bottom: var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
  }

  .service-item:last-child {
    border-bottom: none;
  }

  .two-column,
  .two-column--wide-left,
  .two-column--wide-right {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  nav ul {
    gap: var(--spacing-md);
  }
}

@media (max-width: 640px) {
  :root {
    --spacing-xl: 4rem;
    --spacing-xxl: 5rem;
    --spacing-lg: 3rem;
    --spacing-md: 1.5rem;
  }

  header {
    padding: 0.75rem 0;
  }

  header .container {
    flex-direction: row;
    justify-content: space-between;
  }

  .nav-wrapper {
    display: flex;
    align-items: center;
    gap: 0.75rem;
  }

  .menu-toggle {
    display: flex;
    order: 1;
    z-index: 101;
    position: relative;
  }

  .theme-toggle {
    width: 36px;
    height: 36px;
    order: 2;
    z-index: 101;
    position: relative;
  }

  header {
    z-index: 100;
    background: #ffffff;
  }

  [data-theme="dark"] header {
    background: #0a0a0a;
  }

  nav {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100vh;
    background: #ffffff;
    z-index: 95;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    clip-path: inset(0 0 100% 0);
    transition: clip-path 0.4s ease;
  }

  [data-theme="dark"] nav {
    background: #0a0a0a;
  }

  nav.active {
    clip-path: inset(0 0 0 0);
  }

  nav ul {
    flex-direction: column;
    align-items: center;
    gap: 2rem;
  }

  nav a {
    font-size: 1.5rem;
    letter-spacing: 0.1em;
  }

  .logo {
    z-index: 101;
    position: relative;
  }

  .logo-mark {
    width: 32px;
    height: 32px;
  }

  .logo-text {
    font-size: 0.7rem;
  }

  .hero {
    min-height: auto;
    padding: var(--spacing-xl) 0;
  }

  .hero h1 {
    font-size: 2rem;
    line-height: 1.2;
  }

  .hero-tagline {
    font-size: 1rem;
  }

  .hero-subtitle {
    font-size: 0.95rem;
  }

  .hero-canvas {
    opacity: 0.2;
  }

  section {
    padding: var(--spacing-xl) 0;
  }

  h2 {
    font-size: 1.5rem;
  }

  .section-number {
    margin-bottom: var(--spacing-md);
  }

  .services-grid {
    margin-top: var(--spacing-lg);
  }

  .service-item {
    padding-bottom: var(--spacing-md);
  }

  .notice {
    padding: var(--spacing-md);
    margin-top: var(--spacing-lg);
  }

  .contact-value {
    font-size: 0.95rem;
  }

  .btn {
    padding: 0.875rem 1.5rem;
    font-size: 0.75rem;
  }

  footer .container {
    flex-direction: column;
    gap: var(--spacing-sm);
    text-align: center;
  }

  .scroll-indicator {
    display: none;
  }
}

/* Extra small devices */
@media (max-width: 380px) {
  nav ul {
    gap: 0.5rem;
  }

  nav a {
    font-size: 0.65rem;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .container {
    padding: 0 1rem;
  }
}

/* ========================================
   Scroll Reveal Animations
   ======================================== */

/* Base state for animated elements */
.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Fade only (no slide) */
.reveal-fade {
  opacity: 0;
  transition: opacity 1s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-fade.revealed {
  opacity: 1;
}

/* Slide from left */
.reveal-left {
  opacity: 0;
  transform: translateX(-40px);
  transition: opacity 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

/* Staggered children animation */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94),
              transform 0.6s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

.reveal-stagger.revealed > *:nth-child(1) { transition-delay: 0s; }
.reveal-stagger.revealed > *:nth-child(2) { transition-delay: 0.1s; }
.reveal-stagger.revealed > *:nth-child(3) { transition-delay: 0.2s; }
.reveal-stagger.revealed > *:nth-child(4) { transition-delay: 0.3s; }
.reveal-stagger.revealed > *:nth-child(5) { transition-delay: 0.4s; }

.reveal-stagger.revealed > * {
  opacity: 1;
  transform: translateY(0);
}

/* Section number animation */
.section-number {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.section-number.revealed {
  opacity: 1;
  transform: translateY(0);
}

/* Line draw animation for decorative elements */
.reveal-line::after {
  content: "";
  display: block;
  width: 0;
  height: 1px;
  background-color: var(--color-primary);
  margin-top: var(--spacing-md);
  transition: width 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.3s;
}

.reveal-line.revealed::after {
  width: 60px;
}

/* Hero specific animations */
.hero .section-label {
  opacity: 0;
  transform: translateY(20px);
  animation: heroReveal 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.2s forwards;
}

.hero h1 {
  opacity: 0;
  transform: translateY(30px);
  animation: heroReveal 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.4s forwards;
}

.hero-tagline {
  opacity: 0;
  transform: translateY(20px);
  animation: heroReveal 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.55s forwards;
}

.hero-subtitle {
  opacity: 0;
  transform: translateY(30px);
  animation: heroReveal 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.6s forwards;
}

.hero .btn {
  opacity: 0;
  transform: translateY(20px);
  animation: heroReveal 0.8s cubic-bezier(0.25, 0.46, 0.45, 0.94) 0.8s forwards;
}

.scroll-indicator {
  opacity: 0;
  animation: fadeIn 1s ease 1.2s forwards;
}

@keyframes heroReveal {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

/* Reduce motion for accessibility */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .reveal-fade,
  .reveal-left,
  .reveal-stagger > *,
  .section-number,
  .hero .section-label,
  .hero h1,
  .hero-tagline,
  .hero-subtitle,
  .hero .btn,
  .scroll-indicator {
    opacity: 1;
    transform: none;
    animation: none;
    transition: none;
  }

  .reveal-line::after {
    width: 60px;
    transition: none;
  }
}