@import url('https://fonts.googleapis.com/css2?family=Hanken+Grotesk:ital,wght@0,100..900;1,100..900&family=Noto+Serif:ital,wght@0,100..900;1,100..900&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Material+Symbols+Outlined:wght,FILL@100..700,0..1&display=swap');

/* ==========================================================================
   ATELIER DARK - CORE DESIGN SYSTEM VARIABLES
   ========================================================================== */
:root {
  /* Color Palette */
  --color-surface: #131313;
  --color-surface-dim: #131313;
  --color-surface-bright: #393939;
  --color-surface-container-lowest: #0e0e0e;
  --color-surface-container-low: #1b1c1c;
  --color-surface-container: #1f2020;
  --color-surface-container-high: #2a2a2a;
  --color-surface-container-highest: #353535;
  --color-on-surface: #e5e2e1;
  --color-on-surface-variant: #c4c5d7;
  --color-inverse-surface: #e5e2e1;
  --color-inverse-on-surface: #303030;
  --color-outline: #8d90a0;
  --color-outline-variant: #434655;
  --color-surface-tint: #b6c4ff;

  --color-primary: #b6c4ff;
  --color-on-primary: #00277f;
  --color-primary-container: #3866f1;
  --color-on-primary-container: #f8f7ff;
  --color-inverse-primary: #1a51dd;

  --color-secondary: #c6c6c7;
  --color-on-secondary: #2f3131;
  --color-secondary-container: #454747;
  --color-on-secondary-container: #b4b5b5;

  --color-tertiary: #ffb693;
  --color-on-tertiary: #561f00;
  --color-tertiary-container: #bf4f00;
  --color-on-tertiary-container: #fff6f3;

  --color-error: #ffb4ab;
  --color-on-error: #690005;
  --color-error-container: #93000a;
  --color-on-error-container: #ffdad6;

  --color-background: #131313;
  --color-on-background: #e5e2e1;

  /* Typography Fonts */
  --font-display: 'Noto Serif', serif;
  --font-body: 'Hanken Grotesk', sans-serif;
  --font-label: 'Hanken Grotesk', sans-serif;

  /* Layout Spacing */
  --spacing-unit: 8px;
  --spacing-section-gap: 160px;
  --spacing-gutter: 32px;
  --spacing-margin-mobile: 24px;
  --spacing-container-max: 1200px;
}

/* ==========================================================================
   BASE STYLES & RESET
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  background-color: var(--color-background);
  color: var(--color-on-background);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
}

body {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Selection style */
::selection {
  background-color: var(--color-primary-container);
  color: var(--color-on-primary-container);
}

/* ==========================================================================
   TYPOGRAPHY CLASSES
   ========================================================================== */
.font-display-lg {
  font-family: var(--font-display);
  font-size: clamp(40px, 8vw, 72px);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: -0.04em;
}

.font-headline-lg {
  font-family: var(--font-display);
  font-size: clamp(32px, 6vw, 48px);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.font-headline-md {
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 32px);
  font-weight: 400;
  line-height: 1.3;
  letter-spacing: -0.01em;
}

.font-body-lg {
  font-family: var(--font-body);
  font-size: 18px;
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: 0;
}

.font-body-md {
  font-family: var(--font-body);
  font-size: 16px;
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: 0;
}

.font-label-caps {
  font-family: var(--font-label);
  font-size: 12px;
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* Custom CSS representation of "Noto Serif Extra Condensed" logo */
.logo-font {
  font-family: var(--font-display);
  font-weight: 400;
  letter-spacing: 0.01em;
  display: inline-flex;
  align-items: baseline;
  transform: scaleX(0.82);
  transform-origin: left center;
  text-decoration: none;
  color: var(--color-on-background);
}

.logo-container {
  display: inline-block;
  width: 160px;
  /* Account for the scaleX width difference with the period */
}

/* ==========================================================================
   LAYOUT UTILITIES
   ========================================================================== */
.max-w-container-max {
  max-width: var(--spacing-container-max);
  margin-left: auto;
  margin-right: auto;
}

.px-layout {
  padding-left: var(--spacing-margin-mobile);
  padding-right: var(--spacing-margin-mobile);
}

@media (min-width: 768px) {
  .px-layout {
    padding-left: var(--spacing-gutter);
    padding-right: var(--spacing-gutter);
  }
}

.py-section-gap {
  padding-top: calc(var(--spacing-section-gap) * 0.7);
  padding-bottom: calc(var(--spacing-section-gap) * 0.7);
}

@media (min-width: 768px) {
  .py-section-gap {
    padding-top: var(--spacing-section-gap);
    padding-bottom: var(--spacing-section-gap);
  }
}

.border-t-separator {
  border-top: 1px solid var(--color-outline-variant);
}

/* Grid System */
.grid-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-gutter);
}

@media (min-width: 768px) {
  .grid-layout-12 {
    display: grid;
    grid-template-columns: repeat(12, 1fr);
    gap: var(--spacing-gutter);
  }
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */
header.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 100;
  background-color: var(--color-background);
  border-bottom: 1px solid var(--color-outline-variant);
  transition: all 0.3s ease;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 80px;
}

.nav-links {
  display: none;
  align-items: center;
  gap: 32px;
}

@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }
}

.nav-link {
  text-decoration: none;
  color: var(--color-on-surface-variant);
  font-family: var(--font-label);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: color 0.3s ease;
  padding: 4px 0;
  border-bottom: 1px solid transparent;
}

.nav-link:hover,
.nav-link.active {
  color: var(--color-primary);
}

.nav-link.active {
  border-bottom-color: var(--color-primary-container);
}

.header-actions {
  display: none;
}

@media (min-width: 768px) {
  .header-actions {
    display: block;
  }
}

.menu-toggle {
  display: block;
  background: none;
  border: none;
  color: var(--color-on-background);
  cursor: pointer;
}

@media (min-width: 768px) {
  .menu-toggle {
    display: none;
  }
}

/* Mobile Nav Overlay */
.mobile-nav-overlay {
  position: fixed;
  top: 80px;
  left: 0;
  width: 100%;
  height: calc(100vh - 80px);
  background-color: var(--color-background);
  z-index: 99;
  display: flex;
  flex-direction: column;
  padding: 40px var(--spacing-margin-mobile);
  gap: 32px;
  transform: translateY(-100%);
  opacity: 0;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.3s ease;
  pointer-events: none;
  border-top: 1px solid var(--color-outline-variant);
}

.mobile-nav-overlay.open {
  transform: translateY(0);
  opacity: 1;
  pointer-events: auto;
}

.mobile-nav-link {
  font-size: 24px;
  font-family: var(--font-display);
  color: var(--color-on-background);
  text-decoration: none;
  border-bottom: 1px solid var(--color-surface-container-high);
  padding-bottom: 16px;
  transition: color 0.3s ease;
}

.mobile-nav-link:hover {
  color: var(--color-primary);
}

/* ==========================================================================
   COMPONENTS & INTERACTIVE ELEMENTS
   ========================================================================== */
/* Buttons - 90 degree sharp corners per design system */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-label);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 16px 32px;
  border-radius: 0;
  /* Strict sharp corners */
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.3s ease;
}

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

.btn-primary:hover {
  opacity: 0.9;
  box-shadow: 0 0 12px 2px rgba(56, 102, 241, 0.25);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-on-background);
  border-color: var(--color-outline-variant);
}

.btn-secondary:hover {
  border-color: var(--color-primary);
  background-color: var(--color-surface-container-high);
}

/* Cards - Strict Sharp Corners and Tonal Layers */
.card-bento {
  background-color: var(--color-surface-container-high);
  border: 1px solid var(--color-outline-variant);
  padding: 32px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  position: relative;
  overflow: hidden;
  transition: border-color 0.4s ease, box-shadow 0.4s ease;
  border-radius: 0;
}

.card-bento:hover {
  border-color: var(--color-primary);
  box-shadow: 0 0 16px 2px rgba(56, 102, 241, 0.15);
}

/* Asymmetric Lists (Services list details) */
.list-service-item {
  border-bottom: 1px solid var(--color-outline-variant);
  padding: 48px 0;
  display: flex;
  flex-direction: column;
  gap: 24px;
  transition: background-color 0.3s ease, padding-left 0.3s ease;
}

@media (min-width: 768px) {
  .list-service-item {
    flex-direction: row;
    gap: 64px;
  }

  .list-service-item:hover {
    padding-left: 24px;
    background-color: var(--color-surface-container-lowest);
  }
}

.list-service-title {
  font-family: var(--font-display);
  font-size: clamp(24px, 4vw, 32px);
  color: var(--color-on-background);
  transition: color 0.3s ease;
}

.list-service-item:hover .list-service-title {
  color: var(--color-primary);
}

.list-service-desc {
  color: var(--color-on-surface-variant);
  max-width: 600px;
  margin-bottom: 24px;
}

.list-service-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  font-family: var(--font-label);
  font-size: 11px;
  letter-spacing: 0.05em;
  color: var(--color-outline);
}

/* Inputs & Form Fields - Strict Sharp Borders & Active States */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.form-label {
  font-family: var(--font-label);
  font-size: 12px;
  font-weight: 600;
  color: var(--color-on-surface-variant);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.input-underlined {
  background-color: transparent;
  border: 0;
  border-bottom: 1px solid var(--color-outline-variant);
  color: var(--color-on-background);
  padding: 12px 0;
  font-family: var(--font-body);
  font-size: 16px;
  transition: border-color 0.3s ease;
  border-radius: 0;
  width: 100%;
}

.input-underlined:focus {
  outline: none;
  border-bottom-color: var(--color-primary);
}

.textarea-boxed {
  background-color: transparent;
  border: 1px solid var(--color-outline-variant);
  color: var(--color-on-background);
  padding: 16px;
  font-family: var(--font-body);
  font-size: 16px;
  resize: none;
  border-radius: 0;
  width: 100%;
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}

.textarea-boxed:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgba(56, 102, 241, 0.2);
}

/* ==========================================================================
   HEADER SCROLL SHADOW EFFECT
   ========================================================================== */
header.site-header.scrolled {
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
  background-color: rgba(19, 19, 19, 0.95);
  backdrop-filter: blur(8px);
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.site-footer {
  background-color: var(--color-surface-container-lowest);
  border-top: 1px solid var(--color-outline-variant);
  margin-top: auto;
}

.footer-container {
  display: flex;
  flex-direction: column;
  gap: 32px;
  padding: 64px 0;
}

@media (min-width: 768px) {
  .footer-container {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

.footer-link {
  color: var(--color-on-surface-variant);
  text-decoration: none;
  font-size: 14px;
  transition: color 0.3s ease;
}

.footer-link:hover {
  color: var(--color-on-surface);
}

/* Material Icons styling alignment */
.material-symbols-outlined {
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  vertical-align: middle;
}