/* ============================================
   CASA DE LUCA — Main Styles
   Luxury modeling agency — Editorial aesthetic
   ============================================ */

/* --- CSS Custom Properties --- */
:root {
  /* Colour palette */
  --bg: #F9F7F5;
  --text: #1C1C1C;
  --text-secondary: #5A5A5A;
  --text-muted: #8B8B8B;
  --accent: #3A3A3A;
  --accent-secondary: #D4A574;
  --accent-hover: #2A2A2A;
  --border: #E8DEDB;
  --white: #ffffff;

  /* Typography */
  --font-serif: 'Cormorant Garamond', 'Playfair Display', Georgia, serif;
  --font-sans: 'Inter', 'Helvetica Neue', Helvetica, Arial, sans-serif;

  /* Spacing & layout */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --max-width: 1200px;
  --header-height: 72px;

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --duration: 0.4s;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

a {
  color: inherit;
  text-decoration: none;
  transition: color var(--duration) var(--ease), opacity var(--duration) var(--ease);
}

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

/* --- Typography --- */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  font-weight: 500;
  line-height: 1.2;
}

h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  letter-spacing: 0.02em;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  font-weight: 600;
}

.section-heading {
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: var(--space-xs);
  font-weight: 600;
}

.lead {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 42ch;
}

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

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

/* --- Header & navigation --- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-lg);
  background: rgba(250, 250, 248, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration) var(--ease), background var(--duration) var(--ease);
}

.site-header.scrolled {
  border-bottom-color: var(--border);
}

.site-logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.site-logo a {
  color: var(--accent);
}

.site-logo a:hover {
  color: var(--accent-secondary);
}

.site-logo-img {
  display: block;
  max-height: 60px;
  width: auto;
}

.nav-main {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-main a {
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-secondary);
  position: relative;
  transition: color var(--duration) var(--ease);
}

.nav-main a:hover,
.nav-main a.active {
  color: var(--accent);
}

.nav-main a.active::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
}

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
}

.nav-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text);
  transition: transform var(--duration) var(--ease), opacity var(--duration) var(--ease);
}

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

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

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

@media (max-width: 767px) {
  .nav-toggle { display: flex; }
  .nav-main {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg);
    flex-direction: column;
    justify-content: center;
    gap: var(--space-lg);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--duration) var(--ease), visibility var(--duration) var(--ease);
  }
  .nav-main.is-open {
    opacity: 1;
    visibility: visible;
  }
  .nav-main a { font-size: 1rem; }
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  font-size: 0.75rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  transition: background var(--duration) var(--ease), color var(--duration) var(--ease), transform var(--duration) var(--ease);
}

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

.btn-primary:hover {
  background: var(--accent-secondary);
  color: var(--text);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(155, 76, 110, 0.15);
}

.btn-outline {
  border: 2px solid var(--accent);
  color: var(--accent);
}

.btn-outline:hover {
  background: var(--accent);
  color: var(--white);
  transform: translateY(-2px);
  box-shadow: 0 8px 20px rgba(155, 76, 110, 0.15);
}

/* --- Footer --- */
.site-footer {
  padding: var(--space-xl) var(--space-lg);
  border-top: 1px solid var(--border);
  text-align: center;
}

.site-footer .container {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  align-items: center;
}

.footer-locations {
  font-size: 0.8rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.footer-locations span + span::before {
  content: " · ";
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--text-muted);
}

/* --- Utility: fade-in animation --- */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* --- Form base (Contact) --- */
input, textarea, select {
  font-family: var(--font-sans);
  font-size: 1rem;
  width: 100%;
  padding: 1rem 0;
  border: none;
  border-bottom: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  transition: border-color var(--duration) var(--ease), outline 0.2s;
}

input::placeholder,
textarea::placeholder {
  color: var(--text-muted);
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-bottom-color: var(--text);
}

label {
  display: block;
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: var(--space-xs);
}

.form-group {
  margin-bottom: var(--space-lg);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

@media (max-width: 599px) {
  .form-row { grid-template-columns: 1fr; }
}

/* ============================================
   Talent Categories & How-To Sections
   ============================================ */

.talent-categories {
  padding: var(--space-2xl) 0;
  background: linear-gradient(135deg, rgba(212, 165, 116, 0.12) 0%, rgba(155, 76, 110, 0.08) 100%);
}

.talent-categories h2,
.talent-categories .section-heading {
  color: var(--accent);
}

.talent-categories h2 {
  margin-bottom: var(--space-xl);
}

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

@media (min-width: 768px) {
  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .categories-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.category-card {
  padding: var(--space-lg);
  border: 2px solid var(--accent-secondary);
  background: var(--white);
  transition: all var(--duration) var(--ease);
}

.category-card:hover {
  border-color: var(--accent);
  background: linear-gradient(135deg, rgba(212, 165, 116, 0.08), rgba(155, 76, 110, 0.05));
  box-shadow: 0 8px 32px rgba(155, 76, 110, 0.15);
  transform: translateY(-4px);
}

.category-card h3 {
  font-family: var(--font-sans);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-secondary);
  margin-bottom: var(--space-sm);
  font-weight: 600;
}

.category-card p {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.how-to-section {
  padding: var(--space-2xl) 0;
  background: linear-gradient(135deg, var(--accent) 0%, rgba(155, 76, 110, 0.9) 100%);
}

.how-to-section h2,
.how-to-section .section-heading {
  color: var(--white);
}

.how-to-section h2 {
  margin-bottom: var(--space-xl);
}

.how-to-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-xl);
}

@media (min-width: 768px) {
  .how-to-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .how-to-grid {
    grid-template-columns: repeat(4, 1fr);
  }
}

.how-to-card {
  padding: var(--space-lg);
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(10px);
  position: relative;
  transition: all var(--duration) var(--ease);
}

.how-to-card:hover {
  background: rgba(255, 255, 255, 0.15);
  transform: translateY(-4px);
}

.step-number {
  display: inline-block;
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 600;
  color: var(--accent-secondary);
  margin-bottom: var(--space-sm);
  opacity: 0.9;
}

.how-to-card h3 {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: var(--space-sm);
  font-weight: 600;
}

.how-to-card p {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.9);
  line-height: 1.6;
}