/* =============================================
   CATÉGORIE : ROOT
   ============================================= */
:root
{
    /* Variables de couleurs */
    --color-primary: #C6C7C2; /* Cyan néon */
    --color-secondary: #D8C39B; /* Magenta néon */
    --color-background: rgba(0, 0, 0, 0.7); /* Fond semi-transparent pour les éléments UI */
    --color-text: #ffffff; /* Blanc pur pour le texte */
    --Gris-Estompe: #858986;
    --Gris-Clair: #A3A6A4;
    --Gris-Sombre:#606462;


    --blue: #00aaff;
    --blue-dim: #0066bb;
    --blue-glow: rgba(0,170,255,0.35);
    --golden-faint: rgba(216, 195, 155, 0.08);
    --white: #e8f4ff;
    --grey: rgba(200,220,255,0.55);
    --dark: rgba(0,5,15,0.82);
    --panel: rgba(0,10,30,0.72);
    --border: rgba(57, 48, 42, 0.607);
    --tab-h: 52px;
    
    /* Variables de typographie */
    --font-family: 'Arial', sans-serif;
    --font-size-base: 16px;
    --font-family-Name: 'Cinzel', serif;
    --font-family-Role: 'Rajdhani', sans-serif;
    --font-family-Tag: 'Cormorant Garamond', cursive;
    /* Variables de dimensions */
    --border-radius: 8px;
    --padding-base: 16px;
}



/* =============================================
   CATÉGORIE : RÉINITIALISATION & VARIABLES
   ============================================= */

body{
    font-family: var(--font-family);
    padding: 0;
    margin: 0;
    background-color: #000e12;
}
*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* =============================================
   CATÉGORIE : KEYFRAMES & ANIMATIONS
   ============================================= */
@keyframes slideDownNav {
  from {
    transform: translateY(-100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.9);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes floatIn {
  from {
    opacity: 0;
    transform: translateY(50px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Animations pour les sections au scroll */
#about.animate-in,
#projects.animate-in,
#skills.animate-in,
#contact.animate-in {
  animation: fadeInUp 0.8s ease forwards !important;
}
   
#topbar {
    position: fixed; top: 0; left: 0; right: 0;
    height: var(--tab-h); z-index: 100;
    display: flex; align-items: stretch;
    background: linear-gradient(to bottom, var(--border), transparent) ;
    backdrop-filter: blur(2px);
    /* border-bottom: 1px solid var(--border); */
    padding: 0 18px;
    animation: slideDownNav 0.8s cubic-bezier(0.26, 1.1, 0.64, 1);
}


.tabs {
  display: flex; align-items: stretch; flex: 1;
  padding: 0 16px;
  justify-content: center;
}

.tab {
  font-family: 'var(--font-family-Tag)', serif;
  font-size: .60rem; font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--grey);
  padding: 0 20px;
  display: flex; align-items: center;
  border: none; background: transparent;
  cursor: pointer;
  position: relative;
  transition: color .2s;
  animation: fadeInUp 0.8s ease both;
}

.tab:nth-child(1) { animation-delay: 0.15s; }
.tab:nth-child(2) { animation-delay: 0.2s; }
.tab:nth-child(3) { animation-delay: 0.25s; }
.tab:nth-child(4) { animation-delay: 0.3s; }
.tab:nth-child(5) { animation-delay: 0.35s; }
.tab:nth-child(6) { animation-delay: 0.4s; }


.tab::after {
  content: '';
  position: absolute; bottom: 0; left: 50%; right: 50%;
  height: 2px; background: var(--color-secondary);
  transition: left .2s, right .2s;
}
.tab:hover { color: var(--white); }
.tab.active { color: var(--white); }
.tab.active::after { left: 8px; right: 8px; box-shadow: 0 0 8px var(--blue); }








/* Hamburger Menu */

.mobile-menu {
  position: fixed;
    top: 0;
    right: -100%;
    width: 70%;
    height: 100vh;
    background-color: var(--blue);
    z-index: 99;
    transition: right 0.5s ease-in-out;
    clip-path: polygon(0 0, 100% 0, 100% 100%, 30% 100%);
    padding: 80px 40px 40px 40px;
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.hamburger {
    display: none;
    position: fixed;
    top: 10px;
    right: 18px;
    flex-direction: column;
    justify-content: space-between;
    width: 42px;
    height: 30px;
    cursor: pointer;
    z-index: 10005;
    background: rgba(232,244,255,0.04);
    border: 1px solid rgba(232,244,255,0.08);
    border-radius: 8px;
    padding: 6px 8px;
    box-shadow: 0 6px 20px rgba(0,170,255,0.08);
    backdrop-filter: blur(4px);
}

.hamburger span {
 display: block;
    height: 3px;
    width: 100%;
    background-color: var(--white);
    border-radius: 3px;
    transition: transform 260ms ease, opacity 200ms ease, background-color 200ms ease;
    box-shadow: 0 1px 0 rgba(0,0,0,0.25);
}

.hamburger:hover {
  background: rgba(232,244,255,0.07);
}

.hamburger:focus {
  outline: 2px solid rgba(0,170,255,0.18);
}

/* Mobile Navigation */
@media (max-width: 992px) {
  .hamburger {
    display: flex;
  }
  #topbar {
    backdrop-filter: none;
    background: none;
  }
  /* Overlay */
  .overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0);
    opacity: 0;
    pointer-events: none;
    transition: background 380ms cubic-bezier(.22,.9,.35,1), opacity 380ms cubic-bezier(.22,.9,.35,1);
    z-index: 10000;
    backdrop-filter: blur(0px);
  }

  .overlay.open {
    background: rgba(0,5,15,0.65);
    opacity: 1;
    pointer-events: auto;
    backdrop-filter: blur(4px);
  }

  /* Off-canvas menu sliding from right */
  .mobile-menu {
    position: fixed;
    top: 0;
    right: 0;
    width: 100%;
    max-width: 320px;
    height: 100vh;
    background: linear-gradient(135deg, rgba(0,5,20,0.95) 0%, rgba(6,18,35,0.95) 50%, rgba(3,12,22,0.98) 100%);
    color: var(--white);
    transform: translateX(100%);
    transition: transform 380ms cubic-bezier(.22,.9,.35,1);
    display: flex;
    flex-direction: column;
    gap: 0px;
    padding: 0;
    z-index: 10001;
    box-shadow: -20px 0 60px rgba(0,170,255,0.12), -10px 0 40px rgba(0,0,0,0.6);
    border-left: 1px solid rgba(216, 195, 155, 0.08);
    overflow-y: auto;
  }

  .mobile-menu.open {
    transform: translateX(0);
  }

  .mobile-menu .tab {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    font-family: 'Cormorant Garamond', serif;
    font-size: 1.1rem;
    font-weight: 300;
    letter-spacing: .12em;
    text-transform: uppercase;
    color: var(--grey);
    padding: 18px 32px;
    border: none;
    background: transparent;
    text-decoration: none;
    cursor: pointer;
    position: relative;
    transition: all 220ms cubic-bezier(0.34, 1.56, 0.64, 1);
    border-left: 3px solid transparent;
    overflow: hidden;
  }

  .mobile-menu .tab::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 3px;
    background: linear-gradient(to bottom, var(--color-secondary), transparent);
    opacity: 0;
    transition: opacity 220ms ease;
  }

  .mobile-menu .tab:hover {
    color: var(--white);
    padding-left: 38px;
    background: linear-gradient(to right, rgba(216, 195, 155, 0.08), transparent);
  }

  .mobile-menu .tab:hover::before {
    opacity: 1;
  }

  .mobile-menu .tab.active {
    color: var(--color-secondary);
    background: linear-gradient(to right, rgba(216, 195, 155, 0.15), transparent);
    text-shadow: 0 0 15px var(--blue-glow);
    border-left: 3px solid var(--color-secondary);
    box-shadow: inset -30px 0 30px rgba(216, 195, 155, 0.03);
  }

  .mobile-menu .tab.active::before {
    opacity: 1;
  }

  /* Hamburger open -> X */
  .hamburger span {
    display: block;
    height: 3px;
    width: 100%;
    background-color: var(--white);
    border-radius: 3px;
    transition: transform 260ms ease, opacity 200ms ease;
  }

  .hamburger.open span:nth-child(1) {
    transform: translateY(8px) rotate(45deg);
  }
  .hamburger.open span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0.2);
  }
  .hamburger.open span:nth-child(3) {
    transform: translateY(-8px) rotate(-45deg);
  }

  /* Ensure topbar layout adapts */
  .tabs { display: none; }
  .logo-area { padding-left: 12px; }
  nav { padding: 0 12px; }
}