/* ============================================
   COOP ARTISTS - Main Stylesheet
   Mobile-first responsive design
   ============================================ */

/* --------------------------------------------
   CSS VARIABLES
   -------------------------------------------- */

:root {
  /* Colors */
  --color-black: #0a0a0a;
  --color-white: #ffffff;
  --color-gray-100: #ffffff;
  --color-gray-200: #e5e5e5;
  --color-gray-300: #d4d4d4;
  --color-gray-400: #a3a3a3;
  --color-gray-500: #737373;
  --color-gray-600: #525252;
  --color-gray-700: #404040;
  --color-gray-800: #262626;
  --color-gray-900: #171717;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-display: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 8rem;

  /* Layout */
  --container-max: 1400px;
  --container-padding: 1.5rem;

  /* Transitions */
  --transition-fast: 0.15s ease-out;
  --transition-base: 0.3s ease-out;
  --transition-slow: 0.5s ease-out;
}

/* --------------------------------------------
   RESET & BASE
   -------------------------------------------- */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-black);
  background-color: var(--color-white);
  min-height: 100vh;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

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

input, textarea, select {
  font: inherit;
}

/* --------------------------------------------
   TYPOGRAPHY
   -------------------------------------------- */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

h1 {
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(2rem, 5vw, 3.5rem);
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: clamp(1.25rem, 2vw, 1.5rem);
}

p {
  max-width: 65ch;
}

.text-small {
  font-size: 0.875rem;
}

.text-large {
  font-size: 1.125rem;
}

.text-muted {
  color: var(--color-gray-500);
}

.text-uppercase {
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-size: 0.75rem;
  font-weight: 500;
}

/* --------------------------------------------
   LAYOUT
   -------------------------------------------- */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.section {
  padding: var(--space-4xl) 0;
}

.section-sm {
  padding: var(--space-2xl) 0;
}

.section-lg {
  padding: var(--space-5xl) 0;
}

/* --------------------------------------------
   HEADER
   -------------------------------------------- */

.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  padding: var(--space-lg) 0;
  background: #fff;
  transition: background var(--transition-base), padding var(--transition-base);
}

.header.scrolled {
  background: rgba(250, 250, 250, 0.95);
  backdrop-filter: blur(10px);
  padding: var(--space-md) 0;
}

main {
  padding-top: 100px;
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0 clamp(1.5rem, 4vw, 3rem);
}

/* Header Logo */
.header-logo {
  display: flex;
  align-items: center;
}

.header-logo img,
.header__logo img,
.logo img {
  height: 70px;
  width: auto;
  display: block;
}

/* Header Navigation */
.header-nav {
  display: none;
}

@media (min-width: 768px) {
  .header-nav {
    display: flex;
    align-items: center;
    gap: 2.5rem;
  }
}

.header-nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-black);
  position: relative;
  padding: 0.5rem 0;
  transition: color var(--transition-fast);
}

.header-nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--color-black);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform var(--transition-base);
}

.header-nav-link:hover::after,
.header-nav-link.active::after {
  transform: scaleX(1);
  transform-origin: left;
}

.header-nav-link:hover {
  color: var(--color-gray-600);
}

/* Legacy classes for compatibility */
.logo {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav {
  display: none;
}

@media (min-width: 768px) {
  .nav {
    display: flex;
    gap: var(--space-xl);
  }
}

.nav-link {
  font-size: 0.875rem;
  font-weight: 500;
}

/* Header Menu Toggle (new) */
.header-menu-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.header-menu-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--color-black);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

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

/* Mobile Menu Toggle (legacy) */
.menu-toggle {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: var(--space-sm);
  margin-right: calc(var(--space-sm) * -1);
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-black);
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.menu-toggle.active span:nth-child(1) {
  transform: translateY(8px) rotate(45deg);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: translateY(-8px) rotate(-45deg);
}

/* Mobile Nav */
.mobile-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: var(--color-white);
  z-index: 999;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-base), visibility var(--transition-base);
}

.mobile-nav.active {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-list {
  text-align: center;
}

.mobile-nav-link {
  display: block;
  font-size: 2rem;
  font-weight: 600;
  padding: var(--space-md) 0;
  transition: color var(--transition-fast);
}

.mobile-nav-link:hover {
  color: var(--color-gray-500);
}

.mobile-nav a {
  display: block;
  font-size: 1.75rem;
  font-weight: 600;
  padding: 0.75rem 0;
  color: var(--color-black);
  transition: color var(--transition-fast);
}

.mobile-nav a:hover {
  color: var(--color-gray-500);
}

.mobile-nav-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  font-size: 2.5rem;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-black);
  line-height: 1;
}

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

  .menu-toggle {
    display: none;
  }
}

/* --------------------------------------------
   FOOTER
   -------------------------------------------- */

.footer {
  padding: var(--space-3xl) 0 var(--space-xl);
  background: var(--color-black);
  color: var(--color-white);
}

.footer-inner {
  display: grid;
  gap: var(--space-2xl);
}

.footer-brand {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: var(--space-md);
}

.footer-tagline {
  color: var(--color-gray-400);
  font-size: 0.875rem;
  max-width: 300px;
}

.footer-nav-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gray-400);
  margin-bottom: var(--space-md);
}

.footer-nav-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-nav-link {
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}

.footer-nav-link:hover {
  color: var(--color-gray-400);
}

.footer-bottom {
  margin-top: var(--space-2xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-gray-800);
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
  font-size: 0.75rem;
  color: var(--color-gray-500);
}

.footer-social {
  display: flex;
  gap: var(--space-lg);
}

.footer-social a {
  transition: color var(--transition-fast);
}

.footer-social a:hover {
  color: var(--color-white);
}

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

  .footer-bottom {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

/* --------------------------------------------
   BUTTONS
   -------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xl);
  font-size: 0.875rem;
  font-weight: 500;
  border-radius: 0;
  transition: all var(--transition-base);
}

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

.btn-primary:hover {
  background: var(--color-gray-800);
}

.btn-outline {
  border: 1px solid var(--color-black);
  background: transparent;
}

.btn-outline:hover {
  background: var(--color-black);
  color: var(--color-white);
}

.btn-lg {
  padding: var(--space-lg) var(--space-2xl);
  font-size: 1rem;
}

/* --------------------------------------------
   HERO SECTIONS
   -------------------------------------------- */

.hero {
  min-height: 60vh;
  display: flex;
  align-items: center;
  padding-top: 120px;
}

.hero-lg {
  min-height: 80vh;
}

.hero-title {
  margin-bottom: var(--space-lg);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-gray-600);
  max-width: 600px;
}

/* --------------------------------------------
   SERVICES PAGE
   -------------------------------------------- */

.services-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3xl);
}

.service-item {
  display: grid;
  gap: var(--space-lg);
  padding-bottom: var(--space-3xl);
  border-bottom: 1px solid var(--color-gray-200);
}

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

.service-number {
  font-size: 4rem;
  font-weight: 700;
  line-height: 1;
  color: var(--color-gray-200);
}

.service-content {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.service-title {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

.service-description {
  color: var(--color-gray-600);
  font-size: 1.0625rem;
  line-height: 1.7;
}

@media (min-width: 768px) {
  .service-item {
    grid-template-columns: 120px 1fr;
    align-items: start;
  }
}

/* --------------------------------------------
   ARTISTS PAGE
   -------------------------------------------- */

.artists-grid {
  display: grid;
  gap: var(--space-xl);
}

.artist-card {
  position: relative;
  overflow: hidden;
  background: var(--color-gray-100);
}

.artist-image {
  aspect-ratio: 1;
  overflow: hidden;
}

.artist-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.artist-card:hover .artist-image img {
  transform: scale(1.05);
}

.artist-info {
  padding: var(--space-lg);
}

.artist-name {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-xs);
}

.artist-specialties {
  font-size: 0.875rem;
  color: var(--color-gray-500);
}

@media (min-width: 480px) {
  .artists-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 768px) {
  .artists-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

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

/* --------------------------------------------
   ABOUT PAGE
   -------------------------------------------- */

.about-hero {
  padding-top: 120px;
  padding-bottom: var(--space-4xl);
}

.about-statement {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
  font-weight: 500;
  line-height: 1.3;
  max-width: 900px;
}

.about-content {
  display: grid;
  gap: var(--space-3xl);
}

.about-section-title {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gray-500);
  margin-bottom: var(--space-lg);
}

.about-text {
  font-size: 1.0625rem;
  line-height: 1.8;
  color: var(--color-gray-700);
}

.clients-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md) var(--space-xl);
}

.client-name {
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--color-gray-400);
  transition: color var(--transition-fast);
}

.client-name:hover {
  color: var(--color-black);
}

.about-cta {
  background: var(--color-gray-100);
  padding: var(--space-3xl);
  text-align: center;
}

.about-cta h3 {
  margin-bottom: var(--space-md);
}

.about-cta p {
  margin: 0 auto var(--space-xl);
  color: var(--color-gray-600);
}

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

/* --------------------------------------------
   CONTACT PAGE
   -------------------------------------------- */

.contact-grid {
  display: grid;
  gap: var(--space-3xl);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.form-label {
  font-size: 0.875rem;
  font-weight: 500;
}

.form-input,
.form-textarea {
  padding: var(--space-md);
  border: 1px solid var(--color-gray-300);
  background: var(--color-white);
  transition: border-color var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--color-black);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.contact-info-item h4 {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-gray-500);
  margin-bottom: var(--space-sm);
}

.contact-info-item p,
.contact-info-item a {
  font-size: 1rem;
}

.contact-info-item a {
  transition: color var(--transition-fast);
}

.contact-info-item a:hover {
  color: var(--color-gray-500);
}

.contact-social {
  display: flex;
  gap: var(--space-lg);
  margin-top: var(--space-lg);
}

.contact-social a {
  font-size: 0.875rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.contact-social a:hover {
  color: var(--color-gray-500);
}

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

/* --------------------------------------------
   UTILITIES
   -------------------------------------------- */

.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;
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--space-sm); }
.mb-2 { margin-bottom: var(--space-md); }
.mb-3 { margin-bottom: var(--space-lg); }
.mb-4 { margin-bottom: var(--space-xl); }
.mb-5 { margin-bottom: var(--space-2xl); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-sm); }
.mt-2 { margin-top: var(--space-md); }
.mt-3 { margin-top: var(--space-lg); }
.mt-4 { margin-top: var(--space-xl); }
.mt-5 { margin-top: var(--space-2xl); }

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }