:root {
  /* Primitive Color Tokens */
  --color-white: rgba(255, 255, 255, 1);
  --color-black: rgba(0, 0, 0, 1);
  --color-cream-50: rgba(252, 252, 249, 1);
  --color-cream-100: rgba(255, 255, 253, 1);
  --color-gray-200: rgba(245, 245, 245, 1);
  --color-gray-300: rgba(167, 169, 169, 1);
  --color-gray-400: rgba(119, 124, 124, 1);
  --color-slate-500: rgba(98, 108, 113, 1);
  --color-brown-600: rgba(94, 82, 64, 1);
  --color-charcoal-700: rgba(31, 33, 33, 1);
  --color-charcoal-800: rgba(38, 40, 40, 1);
  --color-slate-900: rgba(19, 52, 59, 1);
  --color-teal-300: rgba(50, 184, 198, 1);
  --color-teal-400: rgba(45, 166, 178, 1);
  --color-teal-500: rgba(33, 128, 141, 1);
  --color-teal-600: rgba(29, 116, 128, 1);
  --color-teal-700: rgba(26, 104, 115, 1);
  --color-teal-800: rgba(41, 150, 161, 1);
  --color-red-400: rgba(255, 84, 89, 1);
  --color-red-500: rgba(192, 21, 47, 1);
  --color-orange-400: rgba(230, 129, 97, 1);
  --color-orange-500: rgba(168, 75, 47, 1);

  /* RGB versions for opacity control */
  --color-brown-600-rgb: 94, 82, 64;
  --color-teal-500-rgb: 33, 128, 141;
  --color-slate-900-rgb: 19, 52, 59;
  --color-slate-500-rgb: 98, 108, 113;
  --color-red-500-rgb: 192, 21, 47;
  --color-red-400-rgb: 255, 84, 89;
  --color-orange-500-rgb: 168, 75, 47;
  --color-orange-400-rgb: 230, 129, 97;

  /* Semantic Color Tokens (Light Mode) */
  --color-background: var(--color-cream-50);
  --color-surface: var(--color-cream-100);
  --color-text: var(--color-slate-900);
  --color-text-secondary: var(--color-slate-500);
  --color-primary: var(--color-teal-500);
  --color-primary-hover: var(--color-teal-600);
  --color-primary-active: var(--color-teal-700);
  --color-secondary: rgba(var(--color-brown-600-rgb), 0.12);
  --color-secondary-hover: rgba(var(--color-brown-600-rgb), 0.2);
  --color-secondary-active: rgba(var(--color-brown-600-rgb), 0.25);
  --color-border: rgba(var(--color-brown-600-rgb), 0.2);
  --color-btn-primary-text: var(--color-cream-50);
  --color-card-border: rgba(var(--color-brown-600-rgb), 0.12);
  --color-card-border-inner: rgba(var(--color-brown-600-rgb), 0.12);
  --color-error: var(--color-red-500);
  --color-success: var(--color-teal-500);
  --color-warning: var(--color-orange-500);
  --color-info: var(--color-slate-500);
  --color-focus-ring: rgba(var(--color-teal-500-rgb), 0.4);
  --color-select-caret: rgba(var(--color-slate-900-rgb), 0.8);

  /* Common style patterns */
  --focus-ring: 0 0 0 3px var(--color-focus-ring);
  --focus-outline: 2px solid var(--color-primary);
  --status-bg-opacity: 0.15;
  --status-border-opacity: 0.25;
  --select-caret-light: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23134252' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  --select-caret-dark: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23f5f5f5' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");

  /* RGB versions for opacity control */
  --color-success-rgb: 33, 128, 141;
  --color-error-rgb: 192, 21, 47;
  --color-warning-rgb: 168, 75, 47;
  --color-info-rgb: 98, 108, 113;

  /* Typography */
  --font-family-base: "FKGroteskNeue", "Geist", "Inter", -apple-system,
    BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-family-mono: "Berkeley Mono", ui-monospace, SFMono-Regular, Menlo,
    Monaco, Consolas, monospace;
  --font-size-xs: 11px;
  --font-size-sm: 12px;
  --font-size-base: 14px;
  --font-size-md: 14px;
  --font-size-lg: 16px;
  --font-size-xl: 18px;
  --font-size-2xl: 20px;
  --font-size-3xl: 24px;
  --font-size-4xl: 30px;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 550;
  --font-weight-bold: 600;
  --line-height-tight: 1.2;
  --line-height-normal: 1.5;

  /* Spacing */
  --space-0: 0;
  --space-4: 4px;
  --space-8: 8px;
  --space-12: 12px;
  --space-16: 16px;
  --space-20: 20px;
  --space-24: 24px;
  --space-32: 32px;

  /* Border Radius */
  --radius-sm: 6px;
  --radius-base: 8px;
  --radius-md: 10px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Animation */
  --duration-fast: 150ms;
  --duration-normal: 250ms;
  --ease-standard: cubic-bezier(0.16, 1, 0.3, 1);

  /* Layout */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1280px;
}

/* Dark mode colors */
@media (prefers-color-scheme: dark) {
  :root {
    --color-gray-400-rgb: 119, 124, 124;
    --color-teal-300-rgb: 50, 184, 198;
    --color-gray-300-rgb: 167, 169, 169;
    --color-gray-200-rgb: 245, 245, 245;

    --color-background: var(--color-charcoal-700);
    --color-surface: var(--color-charcoal-800);
    --color-text: var(--color-gray-200);
    --color-text-secondary: rgba(var(--color-gray-300-rgb), 0.7);
    --color-primary: var(--color-teal-300);
    --color-primary-hover: var(--color-teal-400);
    --color-primary-active: var(--color-teal-800);
    --color-secondary: rgba(var(--color-gray-400-rgb), 0.15);
    --color-border: rgba(var(--color-gray-400-rgb), 0.3);
    --color-error: var(--color-red-400);
    --color-success: var(--color-teal-300);
    --color-warning: var(--color-orange-400);
    --color-info: var(--color-gray-300);
  }
}

/* Base styles */
html {
  font-size: var(--font-size-base);
  font-family: var(--font-family-base);
  line-height: var(--line-height-normal);
  color: var(--color-text);
  background-color: var(--color-background);
  -webkit-font-smoothing: antialiased;
  box-sizing: border-box;
}

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

h1, h2, h3, h4, h5, h6 {
  margin: 0; font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight); color: var(--color-text);
}

p { margin: 0 0 var(--space-16) 0; }

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease-standard);
}
a:hover { color: var(--color-primary-hover); }

/* Custom styles for modern portfolio */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Override design system colors for dark theme */
    --color-background: #0a0a0a;
    --color-surface: #161b22;
    --color-text: #ffffff;
    --color-text-secondary: #8b949e;
    --color-primary: #00d4ff;
    --color-primary-hover: #00b8e6;
    --color-primary-active: #009cc7;
    --color-accent: #7c3aed;
    --color-accent-secondary: #6366f1;
    --color-border: rgba(255, 255, 255, 0.1);
    
    /* Custom gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-primary), var(--color-accent));
    
    /* Glass effect */
    --glass-bg: rgba(22, 27, 34, 0.8);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-blur: blur(10px);
    
    /* Shadows */
    --shadow-primary: 0 0 30px rgba(0, 212, 255, 0.3);
    --shadow-card: 0 8px 32px rgba(0, 0, 0, 0.3);
    --shadow-hover: 0 16px 64px rgba(0, 0, 0, 0.4);
}

body {
    font-family: 'Inter', var(--font-family-base);
    background-color: var(--color-background);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

html { scroll-behavior: smooth; }

/* Header Navigation */
.header {
    position: fixed; top: 0; left: 0; width: 100%;
    background: rgba(10, 10, 10, 0.9);
    backdrop-filter: var(--glass-blur);
    z-index: 1000; padding: var(--space-16) 0;
    transition: all var(--duration-normal) var(--ease-standard);
}

.nav {
    display: flex; justify-content: space-between; align-items: center;
    max-width: 1200px; margin: 0 auto; padding: 0 var(--space-24);
}

.nav__logo {
    font-size: var(--font-size-xl); font-weight: var(--font-weight-bold);
    background: var(--gradient-primary);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    background-clip: text; text-decoration: none;
}

.nav__menu { display: flex; list-style: none; gap: var(--space-24); }

.nav__link {
    color: var(--color-text-secondary); text-decoration: none;
    font-weight: var(--font-weight-medium);
    transition: color var(--duration-fast) var(--ease-standard); position: relative;
}

.nav__link:hover { color: var(--color-primary); }
.nav__link::after {
    content: ''; position: absolute; bottom: -4px; left: 0;
    width: 0; height: 2px; background: var(--color-primary);
    transition: width var(--duration-normal) var(--ease-standard);
}
.nav__link:hover::after { width: 100%; }

.nav__toggle { display: none; flex-direction: column; cursor: pointer; gap: 4px; }
.nav__toggle-bar { width: 25px; height: 3px; background: var(--color-text); transition: all 0.25s; }

/* Hero Section */
.hero {
    min-height: 100vh; display: flex; align-items: center; padding-top: 80px;
    background: radial-gradient(ellipse at center, rgba(0, 212, 255, 0.05) 0%, transparent 70%);
    position: relative; overflow: hidden;
}

.hero::before {
    content: ''; position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background: radial-gradient(circle at 20% 80%, rgba(124, 58, 237, 0.1) 0%, transparent 50%),
                radial-gradient(circle at 80% 20%, rgba(99, 102, 241, 0.1) 0%, transparent 50%);
    pointer-events: none;
}

.hero__container {
    display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-32);
    max-width: 1200px; margin: 0 auto; padding: 0 var(--space-24); align-items: center;
}

.hero__content { z-index: 2; }
.hero__greeting { display: block; color: var(--color-text-secondary); font-size: var(--font-size-lg); margin-bottom: var(--space-8); }
.hero__name {
    display: block; font-size: clamp(2.5rem, 5vw, 4rem); font-weight: var(--font-weight-bold);
    background: var(--gradient-primary); -webkit-background-clip: text;
    -webkit-text-fill-color: transparent; margin-bottom: var(--space-16);
}
.hero__profession { display: block; font-size: var(--font-size-xl); color: var(--color-text); margin-bottom: var(--space-24); min-height: 1.5em; }
.hero__description { font-size: var(--font-size-lg); color: var(--color-text-secondary); margin-bottom: var(--space-32); }

.hero__visual { display: flex; justify-content: center; align-items: center; }
.hero__code-block {
    background: var(--glass-bg); border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg); padding: var(--space-24);
    font-family: var(--font-family-mono); font-size: var(--font-size-base);
    backdrop-filter: var(--glass-blur); box-shadow: var(--shadow-card);
}
.code-line { margin-bottom: var(--space-8); }
.code-keyword { color: #ff79c6; } .code-class { color: #8be9fd; }
.code-property { color: #50fa7b; } .code-string { color: #f1fa8c; }
.code-operator { color: #ff79c6; } .code-bracket { color: #f8f8f2; }
.code-indent { color: transparent; }

/* Section Styles */
.section__header { text-align: center; margin-bottom: var(--space-32); }
.section__subtitle { font-size: var(--font-size-lg); color: var(--color-text-secondary); }

/* About Section */
.about { padding: 100px 0; background: var(--color-bg-1); }
.about__content { max-width: 800px; margin: 0 auto; }
.about__description { font-size: var(--font-size-lg); margin-bottom: var(--space-24); line-height: 1.8; }
.about__info { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: var(--space-16); margin-top: var(--space-32); }
.info__item { display: flex; flex-direction: column; gap: var(--space-4); }
.info__label { color: var(--color-text-secondary); font-weight: var(--font-weight-medium); font-size: var(--font-size-sm); text-transform: uppercase; }
.info__value { color: var(--color-text); font-weight: var(--font-weight-semibold); }

/* Education Section */
.education { padding: 100px 0; }
.education__timeline { max-width: 600px; margin: 0 auto; position: relative; }
.education__timeline::before {
    content: ''; position: absolute; left: 50%; top: 0; bottom: 0;
    width: 2px; background: var(--color-primary); transform: translateX(-50%);
}
.timeline__item { display: flex; justify-content: flex-end; padding-right: calc(50% + 30px); position: relative; margin-bottom: var(--space-32); }
.timeline__item:nth-child(even) { justify-content: flex-start; padding-left: calc(50% + 30px); padding-right: 0; }
.timeline__marker {
    position: absolute; left: 50%; top: 20px; width: 16px; height: 16px;
    background: var(--color-primary); border-radius: 50%;
    transform: translateX(-50%); box-shadow: 0 0 20px rgba(0, 212, 255, 0.5);
}
.timeline__content {
    background: var(--glass-bg); border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg); padding: var(--space-24);
    backdrop-filter: var(--glass-blur); box-shadow: var(--shadow-card); max-width: 300px;
}
.timeline__period { color: var(--color-primary); font-weight: var(--font-weight-semibold); font-size: var(--font-size-sm); margin-bottom: var(--space-8); }
.timeline__title { font-size: var(--font-size-lg); margin-bottom: var(--space-8); }
.timeline__institution { color: var(--color-text-secondary); margin-bottom: var(--space-12); }

/* Status */
.status {
    display: inline-flex; align-items: center; padding: var(--space-6) var(--space-12);
    border-radius: var(--radius-full); font-weight: var(--font-weight-medium); font-size: var(--font-size-sm);
}
.status--success { background-color: rgba(33, 128, 141, 0.15); color: var(--color-success); border: 1px solid rgba(33, 128, 141, 0.25); }
.status--info { background-color: rgba(98, 108, 113, 0.15); color: var(--color-info); border: 1px solid rgba(98, 108, 113, 0.25); }

/* Experience Section */
.experience { padding: 100px 0; background: var(--color-bg-2); }
.experience__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); gap: var(--space-32); max-width: 1000px; margin: 0 auto; }
.card__header { padding: var(--space-24) var(--space-24) var(--space-16); border-bottom: 1px solid var(--glass-border); }
.card__title { font-size: var(--font-size-lg); margin-bottom: var(--space-8); color: var(--color-primary); }
.card__period { color: var(--color-text-secondary); font-size: var(--font-size-sm); font-weight: var(--font-weight-medium); }
.card__body { padding: var(--space-24); }
.card__company { font-size: var(--font-size-lg); font-weight: var(--font-weight-semibold); margin-bottom: var(--space-8); }
.card__location { color: var(--color-text-secondary); margin-bottom: var(--space-16); font-size: var(--font-size-sm); }
.card__project-title { color: var(--color-accent); font-size: var(--font-size-base); margin-bottom: var(--space-8); }
.card__project { font-weight: var(--font-weight-semibold); margin-bottom: var(--space-16); color: var(--color-text); }
.card__description { color: var(--color-text-secondary); line-height: 1.7; }

/* Projects Section */
.projects { padding: 100px 0; }
.projects__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: var(--space-32); max-width: 1200px; margin: 0 auto; }
.project__image { position: relative; height: 200px; overflow: hidden; }
.project__image img { width: 100%; height: 100%; object-fit: cover; transition: transform var(--duration-normal) var(--ease-standard); }
.project__card:hover .project__image img { transform: scale(1.05); }
.project__overlay {
    position: absolute; top: 0; left: 0; right: 0; bottom: 0;
    background: linear-gradient(45deg, rgba(0, 0, 0, 0.7), rgba(0, 0, 0, 0.3));
    display: flex; align-items: flex-end; padding: var(--space-16);
    opacity: 0; transition: opacity var(--duration-normal) var(--ease-standard);
}
.project__card:hover .project__overlay { opacity: 1; }
.project__technologies { display: flex; flex-wrap: wrap; gap: var(--space-8); }
.tech-tag {
    background: rgba(0, 212, 255, 0.2); color: var(--color-primary); padding: var(--space-4) var(--space-8);
    border-radius: var(--radius-full); font-size: var(--font-size-xs); font-weight: var(--font-weight-medium);
    border: 1px solid rgba(0, 212, 255, 0.3);
}
.project__title { font-size: var(--font-size-lg); margin-bottom: var(--space-12); color: var(--color-text); }

/* Skills Section */
.skills { padding: 100px 0; background: var(--color-bg-3); }
.skills__grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--space-32); max-width: 1200px; margin: 0 auto; }
.skills__category {
    background: var(--glass-bg); border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg); padding: var(--space-24);
    backdrop-filter: var(--glass-blur); box-shadow: var(--shadow-card);
}
.skills__title { font-size: var(--font-size-lg); margin-bottom: var(--space-24); color: var(--color-primary); text-align: center; }
.skill__item { margin-bottom: var(--space-20); }
.skill__info { display: flex; justify-content: space-between; margin-bottom: var(--space-8); }
.skill__name { font-weight: var(--font-weight-medium); }
.skill__percentage { color: var(--color-primary); font-weight: var(--font-weight-semibold); }
.skill__bar { height: 8px; background: rgba(255, 255, 255, 0.1); border-radius: var(--radius-full); overflow: hidden; }
.skill__progress { height: 100%; background: var(--gradient-primary); border-radius: var(--radius-full); width: 0%; transition: width 1s var(--ease-standard); }

/* Contact */
.contact { padding: 100px 0; }
.contact__content { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-32); max-width: 1000px; margin: 0 auto; align-items: start; }
.contact__title { font-size: var(--font-size-2xl); margin-bottom: var(--space-16); color: var(--color-text); }
.contact__description { color: var(--color-text-secondary); line-height: 1.7; margin-bottom: var(--space-32); }
.contact__details { display: flex; flex-direction: column; gap: var(--space-24); }
.contact__item { display: flex; align-items: center; gap: var(--space-16); }
.contact__icon {
    width: 40px; height: 40px; display: flex; align-items: center; justify-content: center;
    font-size: 20px; background: var(--glass-bg); border: 1px solid var(--glass-border);
    border-radius: var(--radius-base); backdrop-filter: var(--glass-blur);
}
.contact__text { display: flex; flex-direction: column; gap: var(--space-4); }
.contact__label { color: var(--color-text-secondary); font-size: var(--font-size-sm); font-weight: var(--font-weight-medium); }
.contact__value { color: var(--color-text); font-weight: var(--font-weight-semibold); }
.contact__form-container {
    background: var(--glass-bg); border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg); padding: var(--space-32);
    backdrop-filter: var(--glass-blur); box-shadow: var(--shadow-card);
}
.form-group { margin-bottom: var(--space-20); }
.form-control {
    background: rgba(255, 255, 255, 0.05); border: 1px solid var(--glass-border);
    color: var(--color-text); border-radius: var(--radius-base); padding: var(--space-12);
    font-size: var(--font-size-base); transition: all var(--duration-fast) var(--ease-standard);
    width: 100%; display: block;
}
.form-control:focus { border-color: var(--color-primary); box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1); outline: none; }
.form-label { color: var(--color-text-secondary); font-weight: var(--font-weight-medium); margin-bottom: var(--space-8); display: block; }
.btn__loading { display: none; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    padding: var(--space-8) var(--space-16); border-radius: var(--radius-base);
    font-size: var(--font-size-base); font-weight: 500; line-height: 1.5;
    cursor: pointer; transition: all 0.3s ease; border: none; text-decoration: none; position: relative; overflow: hidden;
}
.btn--primary { background: var(--gradient-primary); box-shadow: 0 0 20px rgba(0, 212, 255, 0.3); color: white; }
.btn--primary:hover { box-shadow: var(--shadow-primary); }
.btn--outline { background: transparent; border: 2px solid var(--color-primary); color: var(--color-primary); }
.btn--outline:hover { background: var(--color-primary); color: var(--color-background); }
.btn--sm { padding: var(--space-4) var(--space-12); font-size: var(--font-size-sm); border-radius: var(--radius-sm); }
.btn--full-width { width: 100%; }

/* Footer */
.footer { padding: var(--space-32) 0; border-top: 1px solid var(--glass-border); text-align: center; }
.footer__text { color: var(--color-text-secondary); margin-bottom: var(--space-8); }

/* Responsive Design */
@media (max-width: 768px) {
    .nav__menu {
        position: fixed; top: 100%; left: 0; width: 100%;
        background: rgba(10, 10, 10, 0.95); backdrop-filter: var(--glass-blur);
        flex-direction: column; padding: var(--space-24); gap: var(--space-16);
        transform: translateX(-100%); transition: transform var(--duration-normal) var(--ease-standard);
    }
    .nav__menu.active { transform: translateX(0); }
    .nav__toggle { display: flex; }
    .nav__toggle.active .nav__toggle-bar:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
    .nav__toggle.active .nav__toggle-bar:nth-child(2) { opacity: 0; }
    .nav__toggle.active .nav__toggle-bar:nth-child(3) { transform: rotate(-45deg) translate(7px, -6px); }
    .hero__container { grid-template-columns: 1fr; gap: var(--space-24); text-align: center; }
    .hero__buttons { justify-content: center; }
    .timeline__item { padding-right: 0; padding-left: 30px; justify-content: flex-start; }
    .timeline__item:nth-child(even) { padding-left: 30px; padding-right: 0; justify-content: flex-start; }
    .timeline__marker { left: 0; transform: translateX(0); }
    .education__timeline::before { left: 8px; transform: none; }
    .timeline__content { max-width: none; }
    .contact__content { grid-template-columns: 1fr; gap: var(--space-24); }
}
@media (max-width: 480px) {
    .nav, .hero__container, .container { padding: 0 var(--space-16); }
    .hero__name { font-size: 2.5rem; }
    .contact__form-container { padding: var(--space-24); }
}

/* Container */
.container { width: 100%; margin: 0 auto; padding: 0 var(--space-16); }
@media (min-width: 640px) { .container { max-width: 640px; } }
@media (min-width: 768px) { .container { max-width: 768px; } }
@media (min-width: 1024px) { .container { max-width: 1024px; } }
@media (min-width: 1280px) { .container { max-width: 1280px; } }


/* ==========================================================================
   NOUVELLES ANIMATIONS PREMIUM
   ========================================================================== */

/* 1. Barre de progression de défilement */
.scroll-progress {
    position: fixed; top: 0; left: 0; width: 0%; height: 3px;
    background: var(--gradient-primary); z-index: 9999;
    transition: width 0.1s ease-out; box-shadow: 0 0 10px var(--color-primary);
}

/* 2. Lueur subtile (Spotlight) */
.mouse-glow {
    position: fixed; top: 0; left: 0; width: 600px; height: 600px;
    border-radius: 50%;
    background: radial-gradient(circle, rgba(0, 212, 255, 0.05) 0%, rgba(124, 58, 237, 0.02) 40%, transparent 70%);
    transform: translate(-50%, -50%); pointer-events: none; z-index: 0;
    transition: opacity 0.3s ease; opacity: 0;
}

/* 3. Modernisation de l'animation d'apparition (Blur Reveal) */
@keyframes fadeInUpModern {
    from { opacity: 0; transform: translateY(40px) scale(0.95); filter: blur(10px); }
    to { opacity: 1; transform: translateY(0) scale(1); filter: blur(0); }
}
[data-aos="fade-up"] { animation: fadeInUpModern 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards; }

/* 4. Effet de balayage lumineux (Shine) sur les cartes */
.card, .project__card { position: relative; overflow: hidden; }
.card::before, .project__card::before {
    content: ''; position: absolute; top: 0; left: -150%;
    width: 50%; height: 100%;
    background: linear-gradient(to right, transparent, rgba(255, 255, 255, 0.08), transparent);
    transform: skewX(-25deg); transition: all 0.7s ease; z-index: 2; pointer-events: none;
}
.card:hover::before, .project__card:hover::before { left: 200%; }

/* 5. NOUVEAU : Effet Radar/Pulse sur la timeline Education */
.timeline__marker::after {
    content: ''; position: absolute; top: -4px; left: -4px; right: -4px; bottom: -4px;
    border: 2px solid var(--color-primary); border-radius: 50%;
    animation: timelinePulse 2s infinite cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes timelinePulse {
    0% { transform: scale(1); opacity: 0.8; }
    100% { transform: scale(2.5); opacity: 0; }
}

/* 6. NOUVEAU : Révélation de la ligne sous les titres de sections */
.section__title {
    position: relative; display: inline-block; padding-bottom: 5px;
}
.section__title::after {
    content: ''; position: absolute; bottom: 0; left: 50%;
    width: 0; height: 3px; background: var(--gradient-primary);
    transition: width 0.8s ease, left 0.8s ease; border-radius: 2px;
}
.section__title.is-visible::after { width: 100%; left: 0; }

/* 7. NOUVEAU : Style pour les particules d'arrière plan */
.particles-container {
    position: absolute; top: 0; left: 0; width: 100%; height: 100%;
    pointer-events: none; z-index: 0; overflow: hidden;
}
.particle {
    position: absolute; background: var(--color-primary); border-radius: 50%;
    opacity: 0.3; animation: floatUp linear infinite;
    box-shadow: 0 0 10px var(--color-primary);
}
@keyframes floatUp {
    0% { transform: translateY(100vh) scale(0); opacity: 0; }
    20% { opacity: 0.5; transform: translateY(80vh) scale(1); }
    80% { opacity: 0.5; }
    100% { transform: translateY(-20vh) scale(0); opacity: 0; }
}