/* === VARIABLES === */
:root {
  --color-emerald: #059669;
  --color-emerald-dark: #047857;
  --color-emerald-light: rgba(5,150,105,0.15);
  --color-emerald-pale: rgba(5,150,105,0.08);
  --color-emerald-900: #065f46;

  /* Dark theme palette */
  --color-bg: #0f172a;
  --color-surface: #1e293b;
  --color-surface-raised: #263548;
  --color-border: rgba(255,255,255,0.08);
  --color-text: #f1f5f9;
  --color-text-muted: #94a3b8;
  --color-text-dim: #64748b;

  /* Legacy aliases kept for compatibility */
  --color-slate-900: #0f172a;
  --color-slate-700: #cbd5e1;
  --color-slate-500: #94a3b8;
  --color-slate-300: #64748b;
  --color-slate-100: rgba(255,255,255,0.06);
  --color-white: #ffffff;

  --font-family: 'Inter', 'Segoe UI', system-ui, sans-serif;

  --section-padding: 5rem 1.5rem;
  --section-max-width: 900px;

  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;

  --transition: 0.2s ease;
  --shadow-card: 0 1px 4px rgba(0,0,0,0.4), 0 4px 20px rgba(0,0,0,0.3);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
}

*:focus-visible {
  outline: 2px solid var(--color-emerald);
  outline-offset: 2px;
}

/* === SCROLL ANIMATIONS BASE === */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === UTILITY === */
.section-label {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: var(--color-emerald);
  margin-bottom: 0.75rem;
}

.section-wrapper {
  max-width: var(--section-max-width);
  margin: 0 auto;
  padding: var(--section-padding);
}

/* === NAV === */
#nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 1.5rem;
  transition: background var(--transition), box-shadow var(--transition);
}

#nav.scrolled {
  background: var(--color-bg);
  box-shadow: 0 1px 0 rgba(255,255,255,0.06);
}

@supports (backdrop-filter: blur(1px)) {
  #nav.scrolled {
    background: rgba(15, 23, 42, 0.92);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
  }
}

.nav-inner {
  max-width: var(--section-max-width);
  margin: 0 auto;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.nav-logo {
  font-weight: 900;
  font-size: 1.05rem;
  letter-spacing: -0.5px;
  color: var(--color-text);
  white-space: nowrap;
}

.nav-logo-dot {
  color: var(--color-emerald);
}

.nav-links {
  display: flex;
  gap: 2rem;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-slate-500);
  transition: color var(--transition);
}

.nav-links a:hover {
  color: var(--color-emerald);
}

.nav-burger {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  padding: 4px;
}

.nav-burger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--transition), opacity var(--transition);
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-family);
  font-weight: 700;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background var(--transition), color var(--transition), transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
  border: none;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--color-emerald);
  color: var(--color-white);
  padding: 0.65rem 1.25rem;
  font-size: 0.875rem;
}

.btn-primary:hover {
  background: var(--color-emerald-dark);
  box-shadow: 0 4px 12px rgba(5, 150, 105, 0.3);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.8rem;
}

.btn-secondary-outline {
  border: 2px solid var(--color-emerald);
  color: var(--color-emerald);
  background: transparent;
  padding: 0.65rem 1.25rem;
  font-size: 0.875rem;
}

.btn-secondary-outline:hover {
  background: rgba(5,150,105,0.12);
}

/* === HERO === */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 7rem 1.5rem 4rem;
  background: var(--color-bg);
  position: relative;
  overflow: hidden;
}

#hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 0;
}

.hero-bg-circle {
  position: absolute;
  top: -120px;
  right: -120px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(5,150,105,0.18) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: var(--section-max-width);
  margin: 0 auto;
  width: 100%;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: rgba(5,150,105,0.12);
  border: 1px solid rgba(5,150,105,0.3);
  color: #34d399;
  padding: 0.3rem 0.85rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.hero-badge-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #34d399;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

.hero-title {
  font-size: clamp(2.4rem, 5vw, 3.75rem);
  font-weight: 900;
  line-height: 1.05;
  letter-spacing: -2px;
  color: var(--color-text);
  margin-bottom: 1.25rem;
}

.hero-title em {
  color: var(--color-emerald);
  font-style: normal;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--color-slate-500);
  line-height: 1.75;
  max-width: 520px;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.hero-link-secondary {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-emerald);
}

.hero-link-secondary:hover {
  text-decoration: underline;
}

.hero-stack {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.hero-stack-label {
  font-size: 0.75rem;
  color: var(--color-slate-300);
  margin-right: 0.25rem;
}

.hero-stack-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  list-style: none;
}

/* === TAG (shared) === */
.tag {
  background: rgba(255,255,255,0.07);
  color: #cbd5e1;
  padding: 0.3rem 0.7rem;
  border-radius: 5px;
  font-size: 0.75rem;
  font-weight: 500;
  border: 1px solid rgba(255,255,255,0.1);
}

.tag-emerald {
  background: rgba(5,150,105,0.15);
  color: #34d399;
  border-color: rgba(5,150,105,0.35);
  font-weight: 600;
}

/* === À PROPOS === */
#apropos {
  border-top: 1px solid var(--color-border);
}

#apropos h2 {
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 2rem;
}

.apropos-grid {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 3.5rem;
  align-items: center;
}

.apropos-text {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.apropos-text p {
  color: var(--color-slate-500);
  line-height: 1.8;
}

.apropos-quote {
  background: rgba(5,150,105,0.08);
  border-left: 3px solid var(--color-emerald);
  padding: 1rem 1.25rem;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  font-size: 0.9rem;
  color: #6ee7b7;
  line-height: 1.65;
  font-style: italic;
  margin-top: 0.5rem;
}

.apropos-photo-wrapper {
  display: flex;
  justify-content: center;
}

.apropos-photo {
  width: 280px;
  height: 280px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: linear-gradient(135deg, #065f46, #059669);
  position: relative;
}

.apropos-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.apropos-photo-placeholder {
  display: flex;
  width: 100%;
  height: 100%;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  font-weight: 900;
  color: var(--color-emerald);
}

/* === SERVICES === */
.services-bg {
  background: var(--color-surface);
}

#services h2 {
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 2rem;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.service-card {
  background: var(--color-bg);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  border: 1px solid var(--color-border);
  transition: transform var(--transition), box-shadow var(--transition);
}

.service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.service-icon {
  font-size: 2rem;
  margin-bottom: 1rem;
}

.service-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.service-card p {
  font-size: 0.85rem;
  color: var(--color-slate-500);
  line-height: 1.65;
}

/* === STACK === */
#stack {
  border-top: 1px solid var(--color-border);
}

#stack h2 {
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 0.75rem;
}

.stack-subtitle {
  color: var(--color-slate-500);
  margin-bottom: 2.5rem;
}

.stack-groups {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.stack-group-title {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--color-slate-300);
  margin-bottom: 0.75rem;
}

.stack-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  list-style: none;
}

/* Stagger animation base — JS will set --delay custom property */
.stagger-tag {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity 0.35s ease, transform 0.35s ease;
  transition-delay: var(--delay, 0ms);
}

.stagger-tag.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === PROJETS === */
#projets {
  border-top: 1px solid var(--color-border);
}

#projets h2 {
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 2rem;
}

.projets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
}

.projet-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--color-surface);
  transition: transform var(--transition), box-shadow var(--transition);
}

.projet-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card);
}

.projet-cover {
  height: 160px;
  background: linear-gradient(135deg, var(--color-emerald), #34d399);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3.5rem;
  position: relative;
  overflow: hidden;
}

.projet-cover-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(5,150,105,0.72), rgba(52,211,153,0.55));
}

.projet-cover-emoji {
  position: relative;
  z-index: 1;
  font-size: 3.5rem;
  filter: drop-shadow(0 2px 8px rgba(0,0,0,0.4));
}

.projet-body {
  padding: 1.5rem;
}

.projet-badge {
  display: inline-block;
  background: #fef3c7;
  color: #92400e;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.75rem;
}

.projet-body h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.projet-body p {
  font-size: 0.85rem;
  color: var(--color-slate-500);
  line-height: 1.65;
}

.projet-tags {
  display: flex;
  gap: 0.4rem;
  flex-wrap: wrap;
  list-style: none;
  margin-top: 1rem;
}

/* === CONTACT === */
#contact {
  border-top: 1px solid var(--color-border);
}

.contact-block {
  background: linear-gradient(135deg, var(--color-emerald) 0%, var(--color-emerald-dark) 100%);
  border-radius: var(--radius-lg);
  padding: 3.5rem 2.5rem;
  text-align: center;
  color: var(--color-white);
}

.contact-block h2 {
  font-size: clamp(1.6rem, 3vw, 2rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  color: var(--color-white);
  margin-bottom: 1rem;
}

.contact-subtitle {
  color: rgba(255,255,255,0.8);
  max-width: 420px;
  margin: 0 auto 2rem;
  line-height: 1.7;
}

.contact-email-btn {
  display: inline-block;
  background: var(--color-white);
  color: var(--color-emerald-dark);
  font-weight: 700;
  font-size: 1rem;
  padding: 0.9rem 2rem;
  border-radius: var(--radius-sm);
  transition: transform var(--transition), box-shadow var(--transition);
  margin-bottom: 1.5rem;
}

.contact-email-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
}

.contact-whatsapp-btn {
  display: inline-block;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.25);
  color: var(--color-white);
  font-weight: 700;
  font-size: 1rem;
  padding: 0.9rem 2rem;
  border-radius: var(--radius-sm);
  transition: background var(--transition), transform var(--transition);
  margin-bottom: 1.5rem;
  margin-left: 0.75rem;
}

.contact-whatsapp-btn:hover {
  background: rgba(255,255,255,0.2);
  transform: translateY(-2px);
}

.contact-links {
  display: flex;
  gap: 2rem;
  justify-content: center;
}

.contact-links a {
  color: rgba(255,255,255,0.7);
  font-size: 0.875rem;
  font-weight: 500;
  transition: color var(--transition);
}

.contact-links a:hover {
  color: var(--color-white);
}

/* === RESPONSIVE === */

/* Tablet: max 1024px */
@media (max-width: 1024px) {
  :root {
    --section-max-width: 100%;
  }
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* Mobile: max 768px */
@media (max-width: 768px) {
  /* Nav */
  .nav-links {
    display: none;
  }
  .nav-burger {
    display: flex;
  }
  .nav-inner .btn-sm {
    display: none;
  }

  /* Hero */
  #hero {
    padding-top: 6rem;
    text-align: left;
  }
  .hero-actions {
    flex-direction: column;
    align-items: flex-start;
  }

  /* À propos */
  .apropos-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .apropos-photo-wrapper {
    order: -1;
  }
  .apropos-photo {
    width: 180px;
    height: 180px;
    margin: 0 auto;
  }

  /* Services */
  .services-grid {
    grid-template-columns: 1fr;
  }

  /* Contact */
  .contact-block {
    padding: 2.5rem 1.5rem;
  }
  .contact-email-btn {
    font-size: 0.85rem;
    padding: 0.75rem 1.25rem;
  }
}

/* === FOOTER === */
.site-footer {
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 0.8rem;
  color: var(--color-text-dim);
}

/* Mobile nav open state */
@media (max-width: 768px) {
  .nav-links.nav-links-open {
    display: flex;
    flex-direction: column;
    position: fixed;
    z-index: 99;
    top: 64px;
    left: 0; right: 0;
    background: var(--color-surface);
    padding: 1.5rem;
    gap: 1.25rem;
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  }

  .nav-links.nav-links-open a {
    font-size: 1.05rem;
  }
}

/* === REDUCED MOTION === */
@media (prefers-reduced-motion: reduce) {
  .reveal,
  .stagger-tag {
    transition: none;
  }
  .hero-badge-dot {
    animation: none;
  }
}