/* O.MICHELET Design System
================================================= */

@font-face {
  font-family: 'Editorial New';
  src: url('../fonts/PPEditorialNew-Regular.otf') format('opentype');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Editorial New';
  src: url('../fonts/PPEditorialNew-Italic.otf') format('opentype');
  font-weight: 400;
  font-style: italic;
  font-display: swap;
}

@font-face {
  font-family: 'Satoshi';
  src: url('../fonts/Satoshi-Regular.woff2') format('woff2');
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Satoshi';
  src: url('../fonts/Satoshi-Medium.woff2') format('woff2');
  font-weight: 500;
  font-style: normal;
  font-display: swap;
}

:root {
  /* Colors — black / white / cobalt (flack.studio inspired) */
  --color-forest: #0A0A0A;
  --color-sage:   #2D2EB5;
  --color-mint:   #F2F2F2;
  --color-sky:    rgba(255,255,255,0.6);
  --color-cloud:  #FAFAF8;
  --color-text:   #0A0A0A;
  --color-text-secondary: #666666;
  --color-white:  #FFFFFF;

  /* Typography */
  --font-heading: 'Editorial New', serif;
  --font-body: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  
  --text-hero: clamp(2.5rem, 5vw, 4.5rem);
  --text-section: clamp(1.8rem, 3vw, 2.8rem);
  --text-body: 1.125rem;
  --text-small: 0.875rem;
  --text-nav: 0.9rem;

  /* Spacing */
  --space-unit: 8px; /* Base 8px grid */
  --section-padding-y: clamp(4rem, 8vw, 8rem);
  --section-padding-x: clamp(1.5rem, 5vw, 4rem);
  --container-max: 1200px;
}

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

html {
  scroll-behavior: auto; /* Handled via GSAP smooth scrolling */
}

body {
  font-family: var(--font-body);
  font-size: var(--text-body);
  line-height: 1.7;
  color: var(--color-text);
  background-color: var(--color-cloud);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 400;
  line-height: 1.1;
  color: var(--color-forest);
}

a {
  text-decoration: none;
  color: inherit;
  transition: opacity 0.3s ease;
}

a:hover {
  opacity: 0.8;
}

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

ul, ol {
  list-style: none;
}

/* Utilities
================================================= */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--section-padding-x);
}

.section {
  padding: var(--section-padding-y) 0;
}

.bg-forest { background-color: var(--color-forest); color: var(--color-white); }
.bg-forest h1, .bg-forest h2, .bg-forest h3 { color: var(--color-white); }
.bg-cloud { background-color: var(--color-cloud); }
.bg-white { background-color: var(--color-white); }
.bg-sage { background-color: var(--color-sage); color: var(--color-white); }
.bg-sage h1, .bg-sage h2 { color: var(--color-white); }

.text-sage { color: var(--color-sage); }
.text-forest { color: var(--color-forest); }
.text-sky { color: var(--color-sky); }
.text-secondary { color: var(--color-text-secondary); }
.text-white { color: var(--color-white); }

.small-caps {
  font-size: var(--text-small);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 500;
  color: var(--color-sage);
  margin-bottom: calc(var(--space-unit) * 3);
  display: block;
}

/* Typography Classes */
.hero-title {
  font-size: var(--text-hero);
  line-height: 1.1;
  margin-bottom: calc(var(--space-unit) * 3);
}

.section-title {
  font-size: var(--text-section);
  margin-bottom: calc(var(--space-unit) * 4);
}

/* Buttons
================================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: var(--text-nav);
  font-weight: 500;
  padding: 12px 28px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.3s ease;
  border: 1px solid transparent;
}

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

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

.btn-outline {
  background-color: transparent;
  color: var(--color-white);
  border-color: var(--color-white);
}

.btn-outline:hover {
  background-color: var(--color-white);
  color: var(--color-forest);
  opacity: 1;
}

.btn-ghost {
  background-color: transparent;
  color: var(--color-white);
  border-color: transparent;
  padding-left: 0;
  padding-right: 0;
}

.btn-ghost:hover {
  opacity: 0.6;
}

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

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

.btn-group {
  display: flex;
  gap: calc(var(--space-unit) * 2);
  margin-top: calc(var(--space-unit) * 5);
}

@media (max-width: 768px) {
  .btn-group {
    flex-direction: column;
    width: 100%;
  }
}

/* Navigation
================================================= */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: calc(var(--space-unit) * 3) 0;
  z-index: 100;
  transition: all 0.4s ease;
}

.site-header.scrolled {
  background-color: rgba(245, 242, 237, 0.9); /* --color-cloud + alpha */
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  padding: calc(var(--space-unit) * 2) 0;
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 var(--section-padding-x);
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  color: var(--color-white); /* Initial state on dark hero */
}

.site-header.scrolled .logo, .site-header.theme-light .logo {
  color: var(--color-forest);
}

.nav-links {
  display: flex;
  gap: calc(var(--space-unit) * 4);
}

.nav-links a {
  font-size: var(--text-nav);
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--color-white); /* Initial */
}

.site-header.scrolled .nav-links a, .site-header.theme-light .nav-links a {
  color: var(--color-text);
}

.nav-links a.active {
  color: var(--color-sage);
}

/* Hamburger (Mobile) */
.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.hamburger {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  position: relative;
  transition: background-color 0.3s ease;
}

.site-header.scrolled .hamburger, .site-header.theme-light .hamburger {
  background-color: var(--color-text);
}

.hamburger::before, .hamburger::after {
  content: '';
  position: absolute;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: inherit;
  transition: all 0.3s ease;
}

.hamburger::before { top: -6px; }
.hamburger::after { top: 6px; }

@media (max-width: 768px) {
  .nav-links {
    display: none; /* simple mobile nav override for now */
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background-color: var(--color-cloud);
    flex-direction: column;
    padding: calc(var(--space-unit) * 4) var(--section-padding-x);
    gap: calc(var(--space-unit) * 3);
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .nav-links a {
    color: var(--color-text) !important;
    font-size: 1.25rem;
  }
  
  .menu-toggle {
    display: block;
  }
}

/* Hero Section (Homepage)
================================================= */
.hero {
  min-height: 100svh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
}

/* Hero mesh — disabled for flat colour experiment */
.hero-mesh { display: none; }

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 900px;
}

.hero .subhead {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: rgba(255, 255, 255, 0.65);
  max-width: 700px;
  line-height: 1.6;
}

/* Hero GSAP initial state */
.hero-title .word {
  opacity: 0;
  transform: translateY(20px);
  display: inline-block;
}

/* Sections
================================================= */
.statement-stack {
  display: flex;
  flex-direction: column;
  gap: calc(var(--space-unit) * 6);
  max-width: 800px;
}

.statement {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
}

.statement-main {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.2em;
  display: block;
  margin-bottom: calc(var(--space-unit) * 1);
  color: var(--color-forest);
}

/* Services */
.services-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: calc(var(--space-unit) * 4);
}

@media (max-width: 900px) {
  .services-grid {
    grid-template-columns: 1fr;
  }
}

.service-card {
  background-color: var(--color-mint);
  border: 1px solid rgba(74, 124, 111, 0.2);
  border-radius: 12px;
  padding: calc(var(--space-unit) * 5);
  display: flex;
  flex-direction: column;
}

.service-icon {
  margin-bottom: calc(var(--space-unit) * 4);
  width: 48px;
  height: 48px;
}

.service-card h3 {
  font-size: 1.75rem;
  margin-bottom: calc(var(--space-unit) * 2);
}

.service-card p {
  margin-bottom: calc(var(--space-unit) * 3);
  color: var(--color-text);
}

.service-list {
  margin-top: auto;
}

.service-list li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: calc(var(--space-unit) * 1.5);
  color: var(--color-text-secondary);
}

.service-list li::before {
  content: "—";
  position: absolute;
  left: 0;
  color: var(--color-sage);
}

/* How I Work */
.process-flow {
  display: flex;
  justify-content: space-between;
  margin-top: calc(var(--space-unit) * 8);
  margin-bottom: calc(var(--space-unit) * 6);
  position: relative;
}

.process-line {
  position: absolute;
  top: 24px;
  left: 20px;
  right: 20px;
  height: 1px;
  background-color: rgba(74, 124, 111, 0.3);
  z-index: 1;
}

.process-line-fill {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  background-color: var(--color-sage);
  width: 0%; /* GSAP animates this */
}

.process-step {
  position: relative;
  z-index: 2;
  flex: 1;
  padding: 0 calc(var(--space-unit) * 2);
}

.step-marker {
  width: 12px;
  height: 12px;
  background-color: var(--color-sage);
  border-radius: 50%;
  margin-bottom: calc(var(--space-unit) * 2);
  outline: 8px solid var(--color-forest);
}

.step-title {
  font-family: var(--font-body);
  font-weight: 500;
  color: var(--color-white);
  margin-bottom: calc(var(--space-unit) * 1);
  font-size: 1.125rem;
}

.step-desc {
  font-size: var(--text-small);
  color: rgba(255, 255, 255, 0.7);
}

.process-footer {
  font-family: var(--font-heading);
  font-style: italic;
  font-size: 1.25rem;
  color: var(--color-sky);
  margin-top: calc(var(--space-unit) * 4);
}

@media (max-width: 768px) {
  .process-flow {
    flex-direction: column;
    gap: calc(var(--space-unit) * 4);
  }
  .process-line {
    top: 20px; left: 14px; right: auto; bottom: 20px;
    width: 1px; height: auto;
  }
  .process-line-fill {
    width: 100%; height: 0%;
  }
  .process-step {
    display: flex;
    gap: calc(var(--space-unit) * 3);
    padding: 0;
  }
  .step-marker {
    margin-bottom: 0;
    flex-shrink: 0;
  }
}

/* About */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: calc(var(--space-unit) * 6);
  align-items: center;
}

@media (max-width: 768px) {
  .about-grid { grid-template-columns: 1fr; }
}

.about-grid .gs-up p + p {
  margin-top: 1.25em;
}

.about-photo {
  width: 100%;
  aspect-ratio: 3/4;
  border-radius: 8px;
  overflow: hidden;
}

.about-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

/* CTA & Footer */
.cta-banner {
  text-align: center;
  padding: calc(var(--section-padding-y) * 1.5) 0;
}

.cta-banner h2 {
  font-size: clamp(2rem, 4vw, 3.5rem);
  margin-bottom: calc(var(--space-unit) * 4);
}

.site-footer {
  padding: calc(var(--space-unit) * 4) var(--section-padding-x);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: rgba(255, 255, 255, 0.5);
}

@media (max-width: 600px) {
  .site-footer { flex-direction: column; gap: calc(var(--space-unit) * 2); text-align: center; }
}

/* Contact Page Form
================================================= */
.contact-hero {
  display: flex;
  align-items: flex-end;
  padding-top: 140px;
  padding-bottom: 80px;
}

.brief-container {
  position: relative;
  padding-bottom: var(--section-padding-y);
}

.brief-card {
  background-color: var(--color-white);
  border-radius: 12px;
  max-width: 640px;
  margin: -60px auto 0;
  padding: calc(var(--space-unit) * 6);
  box-shadow: 0 20px 40px rgba(27, 58, 45, 0.05);
  position: relative;
  z-index: 10;
  min-height: 400px;
  display: flex;
  flex-direction: column;
}

.brief-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: calc(var(--space-unit) * 5);
}

.btn-back {
  background: none;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  font-family: inherit;
  font-size: var(--text-small);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.btn-back.visible {
  opacity: 1;
  pointer-events: auto;
}

.btn-back:hover { color: var(--color-forest); }

.brief-progress {
  display: flex;
  gap: 6px;
}

.progress-dot {
  width: 6px;
  height: 6px;
  background-color: var(--color-mint);
  border-radius: 50%;
  transition: background-color 0.3s ease;
}

.progress-dot.active { background-color: var(--color-sage); }
.progress-dot.completed { background-color: var(--color-sage); opacity: 0.5; }

.brief-steps-wrapper {
  position: relative;
  flex-grow: 1;
  overflow: hidden; /* For sliding animations */
}

.brief-step {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  opacity: 0;
  visibility: hidden;
  transform: translateX(40px);
  transition: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

.brief-step.active {
  position: relative;
  opacity: 1;
  visibility: visible;
  transform: translateX(0);
}

.brief-step.exit-left {
  position: absolute;
  transform: translateX(-40px);
}

.step-question {
  font-family: var(--font-heading);
  font-size: 2rem;
  margin-bottom: calc(var(--space-unit) * 4);
}

.radio-group {
  display: flex;
  flex-direction: column;
  gap: calc(var(--space-unit) * 2);
}

.radio-option {
  display: block;
  position: relative;
  cursor: pointer;
}

.radio-option input {
  position: absolute;
  opacity: 0;
  cursor: pointer;
}

.radio-label {
  display: block;
  padding: calc(var(--space-unit) * 2) calc(var(--space-unit) * 3);
  background-color: var(--color-cloud);
  border: 1px solid transparent;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.radio-option:hover .radio-label {
  background-color: var(--color-mint);
}

.radio-option input:checked ~ .radio-label {
  background-color: var(--color-mint);
  border-color: var(--color-sage);
  font-weight: 500;
  color: var(--color-forest);
}

.input-text, .textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: var(--text-body);
  padding: calc(var(--space-unit) * 2) calc(var(--space-unit) * 3);
  border: 1px solid rgba(107, 107, 107, 0.2);
  border-radius: 8px;
  background-color: var(--color-cloud);
  color: var(--color-text);
  outline: none;
  transition: border-color 0.2s ease;
}

.input-text:focus, .textarea:focus { border-color: var(--color-sage); }

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

.form-group {
  margin-bottom: calc(var(--space-unit) * 3);
}

.form-label {
  display: block;
  font-size: var(--text-small);
  margin-bottom: calc(var(--space-unit) * 1);
  color: var(--color-text-secondary);
}

.step-actions {
  margin-top: calc(var(--space-unit) * 4);
  display: flex;
  justify-content: flex-end;
}

.brief-success {
  text-align: center;
  padding: calc(var(--space-unit) * 6) 0;
}

.brief-success h2 { margin-bottom: calc(var(--space-unit) * 2); }

#otherText {
  display: none;
  margin-top: calc(var(--space-unit) * 2);
}

#otherText.visible { display: block; animation: fadeIn 0.3s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-5px); }
  to { opacity: 1; transform: translateY(0); }
}

@media (max-width: 600px) {
  .brief-card {
    margin: -40px calc(var(--space-unit) * 2) 0;
    padding: calc(var(--space-unit) * 4);
  }
}