/* Portfolio Louis Subtil - CSS Principal */

/* Import des modules CSS */
@import url('01-variables.css');
@import url('02-reset.css');
@import url('03-layout.css');
@import url('04-components.css');
@import url('05-navigation.css');
@import url('06-sections.css');
@import url('07-portfolio.css');
@import url('08-github-integration.css');
@import url('09-footer.css');
@import url('10-responsive.css');
@import url('11-utilities.css');
@import url('12-liquid-glass.css');

/* Reset et base */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--font-family-primary);
  line-height: var(--leading-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-5);
}

/* Navigation - Floating pill Liquid Glass */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  padding: var(--space-4) var(--space-5);
  background: transparent;
  transform: translateY(0);
  transition: transform var(--transition-normal);
}

.navbar.navbar--hidden {
  transform: translateY(-120%);
  pointer-events: none;
}

@media (prefers-reduced-motion: reduce) {
  .navbar {
    transition: none;
  }
}

.nav-container {
  max-width: 640px;
  margin: 0 auto;
  padding: var(--space-2) var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: rgba(30, 30, 46, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(203, 166, 247, 0.2);
  border-radius: var(--border-radius-full);
  box-shadow:
    0 4px 24px rgba(0, 0, 0, 0.3),
    inset 0 1px 0 rgba(203, 166, 247, 0.1);
}

@supports not (backdrop-filter: blur(1px)) {
  .nav-container {
    background: rgba(30, 30, 46, 0.98);
    border-color: rgba(203, 166, 247, 0.3);
  }
}

.nav-logo a {
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-heading);
  text-decoration: none;
  letter-spacing: -0.02em;
  transition: color var(--transition-fast);
}

.nav-logo a:hover {
  color: var(--color-primary);
}

.nav-menu {
  display: flex;
  gap: var(--space-1);
  align-items: center;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: var(--font-medium);
  font-size: var(--text-sm);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--border-radius-lg);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-primary);
  background: rgba(203, 166, 247, 0.1);
}

.nav-link:focus-visible,
.btn:focus-visible,
.filter:focus-visible,
.social-links a:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

/* Hero Section - Dégradé professionnel (sans dépendance image) */
.hero {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #11111b 0%, #181825 50%, #1e1e2e 100%);
  background-size: cover;
  background-position: center;
  position: relative;
  text-align: center;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  color: white;
}

.hero-content h1 {
  font-size: var(--text-5xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-4);
}

.hero-subtitle {
  font-size: var(--text-xl);
  margin-bottom: var(--space-2);
  opacity: 0.9;
}

.hero-description {
  font-size: var(--text-lg);
  margin-bottom: var(--space-8);
  opacity: 0.8;
}

.hero-buttons {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: var(--space-3) var(--space-8);
  border-radius: var(--border-radius-full);
  text-decoration: none;
  font-weight: var(--font-semibold);
  transition: all var(--transition-normal);
  border: none;
  cursor: pointer;
}

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

.btn-primary:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.12);
  color: white;
  border: 1px solid rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.2), inset 0 1px 0 rgba(255, 255, 255, 0.2);
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.25);
  color: white;
  border-color: rgba(255, 255, 255, 0.6);
  box-shadow: 0 6px 32px rgba(0, 0, 0, 0.25), inset 0 1px 0 rgba(255, 255, 255, 0.3);
}

.btn-small {
  padding: 8px 20px;
  font-size: 0.9rem;
}

/* Sections */
section {
  padding: var(--space-20) 0;
}

section h2 {
  text-align: center;
  font-size: var(--text-3xl);
  margin-bottom: var(--space-12);
  color: var(--color-heading);
}

/* About Section */
.about {
  background: var(--color-bg-light);
}

.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-text p {
  font-size: var(--text-lg);
  margin-bottom: var(--space-6);
  color: var(--color-text-muted);
}

.about-text .cv-link {
  color: var(--color-primary);
  text-decoration: none;
  font-weight: var(--font-medium);
  transition: color var(--transition-normal);
}

.about-text .cv-link:hover {
  color: var(--color-primary-hover);
  text-decoration: underline;
}

.about-skills h3 {
  margin-bottom: var(--space-6);
  color: var(--color-heading);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
}

.skill-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-4);
  border-radius: var(--border-radius-xl);
  position: relative;
  overflow: hidden;
}

@supports (backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px)) {
  .skill-item {
    background: var(--lg-bg);
    backdrop-filter: blur(16px) saturate(160%);
    -webkit-backdrop-filter: blur(16px) saturate(160%);
    border: var(--lg-border);
    box-shadow: var(--lg-shadow);
  }

  .skill-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.06);
    border-radius: inherit;
    pointer-events: none;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.3);
    opacity: 0.4;
    z-index: 0;
  }
}

@supports not (backdrop-filter: blur(1px)) {
  .skill-item {
    background: rgba(49, 50, 68, 0.9);
    border: 1px solid rgba(203, 166, 247, 0.2);
    box-shadow: var(--shadow-md);
  }
}

.skill-item > * {
  position: relative;
  z-index: 1;
}

.skill-item i {
  font-size: var(--text-xl);
  color: var(--color-primary);
}

/* Portfolio styles are now in 07-portfolio.css */

/* Contact Section */
.contact {
  background: var(--color-bg-light);
}

.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-12);
}

.contact-info h3 {
  margin-bottom: var(--space-6);
  color: var(--color-heading);
}

.contact-info p {
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.contact-info i {
  color: var(--color-primary);
  width: 20px;
}

/* Contact form - Liquid Glass */
.contact-form {
  border-radius: var(--border-radius-2xl);
  padding: var(--space-8);
  position: relative;
  overflow: hidden;
}

@supports (backdrop-filter: blur(1px)) or (-webkit-backdrop-filter: blur(1px)) {
  .contact-form {
    background: var(--lg-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border: var(--lg-border);
    box-shadow: var(--lg-shadow);
  }

  .contact-form::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.05);
    border-radius: inherit;
    pointer-events: none;
    box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.4);
    opacity: 0.5;
    z-index: 0;
  }
}

@supports not (backdrop-filter: blur(1px)) {
  .contact-form {
    background: rgba(49, 50, 68, 0.95);
    border: 1px solid rgba(203, 166, 247, 0.2);
    box-shadow: var(--shadow-md);
  }
}

.contact-form > * {
  position: relative;
  z-index: 1;
}

/* Form */
.form-group {
  margin-bottom: var(--space-6);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-3);
  border: var(--border-width-2) solid var(--color-border-input);
  border-radius: var(--border-radius-lg);
  font-size: var(--text-base);
  background-color: var(--bg-surface);
  color: var(--text-primary);
  transition: border-color var(--transition-normal);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-tertiary);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(203, 166, 247, 0.15);
}

/* Footer */
.footer {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  padding: var(--space-8) 0;
  border-top: 1px solid var(--border-primary);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  color: white;
  font-size: 1.5rem;
  transition: color 0.3s ease;
}

.social-links a:hover {
  color: var(--color-primary);
}

/* Contact page specific styles */
.social-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--color-primary);
  color: white;
  text-decoration: none;
  border-radius: var(--border-radius-full);
  margin-right: var(--space-4);
  margin-bottom: var(--space-4);
  transition: background var(--transition-normal);
}

.social-link:hover {
  background: var(--color-primary-hover);
}

.form-group label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: var(--font-semibold);
  color: var(--color-heading);
}

/* Responsive */
@media (max-width: 768px) {
  .nav-menu {
    display: none;
  }

  .nav-container {
    max-width: 280px;
    padding: var(--space-2) var(--space-4);
  }
  
  .hero-content h1 {
    font-size: 2.5rem;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .about-content,
  .contact-content {
    grid-template-columns: 1fr;
  }
  
  .skills-grid {
    grid-template-columns: 1fr;
  }
  
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--space-4);
  }

  section {
    padding: var(--space-16) 0;
  }

  .hero-content h1 {
    font-size: 2rem;
  }
}

/* === BACK TO TOP BUTTON === */
.back-to-top {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  z-index: var(--z-fixed);
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(30, 30, 46, 0.85);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border: 1px solid rgba(203, 166, 247, 0.3);
  border-radius: var(--border-radius-full);
  color: var(--color-primary);
  font-size: var(--text-lg);
  cursor: pointer;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--transition-normal), transform var(--transition-normal), box-shadow var(--transition-fast);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.3);
  pointer-events: none;
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.back-to-top:hover {
  box-shadow: var(--shadow-glow), 0 4px 24px rgba(0, 0, 0, 0.3);
  border-color: var(--color-primary);
}

@media (max-width: 480px) {
  .back-to-top {
    bottom: var(--space-4);
    right: var(--space-4);
    width: 40px;
    height: 40px;
  }
}

@media (prefers-reduced-motion: reduce) {
  .back-to-top {
    transition: none;
  }
}

/* === HERO TYPING CURSOR === */
.hero-subtitle::after {
  content: '|';
  display: inline-block;
  margin-left: 2px;
  color: var(--color-primary);
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

@media (prefers-reduced-motion: reduce) {
  .hero-subtitle::after {
    animation: none;
    opacity: 1;
  }
}

/* === FORM FEEDBACK === */
.form-message {
  padding: var(--space-4);
  border-radius: var(--border-radius-lg);
  margin-top: var(--space-4);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  animation: fadeIn 0.3s ease-out;
}

.form-message--success {
  background: rgba(166, 227, 161, 0.15);
  border: 1px solid rgba(166, 227, 161, 0.4);
  color: var(--success);
}

.form-message--error {
  background: rgba(243, 139, 168, 0.15);
  border: 1px solid rgba(243, 139, 168, 0.4);
  color: var(--error);
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* === NAV ACTIVE LINK === */
.nav-link.active {
  color: var(--color-primary);
  background: rgba(203, 166, 247, 0.1);
}