/*--------------------------------------------------------------
# General
--------------------------------------------------------------*/
:root {
  --primary-color: #00e5ff;
  --secondary-color: #8ea3c0;
  --success-color: #2dd4bf;
  --danger-color: #fb7185;
  --light-color: #0f172a;
  --dark-color: #e5edf8;
  --surface-color: #111b2f;
  --surface-soft: #16233d;
  --border-color: #24334f;
  --accent-purple: #8b5cf6;
  --font-family: "Poppins", sans-serif;
  --background-color: #070b14;
  --text-color: #d7e3f4;
  --card-shadow: 0 14px 34px rgba(0, 0, 0, 0.35);
}

body {
  font-family: var(--font-family);
  background:
    radial-gradient(circle at 15% 15%, rgba(0, 229, 255, 0.12), transparent 40%),
    radial-gradient(circle at 85% 5%, rgba(139, 92, 246, 0.12), transparent 35%),
    var(--background-color);
  color: var(--text-color);
  line-height: 1.6;
  position: relative;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background-image:
    linear-gradient(rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  opacity: .16;
  z-index: -1;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  color: var(--dark-color);
  letter-spacing: .02em;
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: 0.3s;
}

a:hover {
  color: var(--accent-purple);
  text-decoration: none;
}

/*--------------------------------------------------------------
# Header
--------------------------------------------------------------*/
.header {
  background-color: var(--light-color);
  box-shadow: 0 8px 26px rgba(0,0,0,0.28);
}

.navbar-brand {
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--primary-color) !important;
}

.nav-link {
  font-weight: 500;
  color: var(--secondary-color) !important;
  transition: color 0.3s;
}

.nav-link:hover, .nav-link.active {
  color: var(--primary-color) !important;
}

/*--------------------------------------------------------------
# Global container + layout utilities
--------------------------------------------------------------*/
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* Utilities (spacing small subset similar to Bootstrap helpers) */
.mt-1 { margin-top: .25rem !important; }
.mt-2 { margin-top: .5rem !important; }
.mt-3 { margin-top: 1rem !important; }
.mt-4 { margin-top: 1.5rem !important; }
.mt-5 { margin-top: 3rem !important; }
.mb-3 { margin-bottom: 1rem !important; }

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

/*--------------------------------------------------------------
# Navigation (supporte les balises sans classes et les classes bootstrap-like)
--------------------------------------------------------------*/
header, .header {
  background-color: var(--light-color);
  border-bottom: 1px solid var(--border-color);
  box-shadow: 0 8px 24px rgba(0,0,0,0.28);
}

header nav, .navbar {
  max-width: 1100px;
  margin: 0 auto;
  padding: .75rem 1rem;
  display: flex;
  align-items: center;
}

.navbar-brand { margin-right: auto; display:inline-block; font-weight:800; color:var(--primary-color) !important; font-size:1.15rem; }
.navbar-nav { display:flex; gap:1rem; align-items:center; }
.nav-link.logout { color: var(--danger-color); font-weight:700; }

/* Username display in nav */
.nav-user .nav-link { pointer-events: none; color: var(--secondary-color); font-weight:600; background: transparent; padding: .45rem .75rem; border-radius: 8px; }
.navbar-nav .nav-user { margin-left: auto; }

header nav ul, .navbar-nav {
  list-style: none;
  display: flex;
  gap: 1rem;
  margin: 0;
  padding: 0;
  align-items: center;
  width: 100%;
}

header nav ul li { margin: 0; }

header nav ul li a, .nav-link {
  padding: .45rem .75rem;
  display: inline-block;
  color: var(--dark-color);
  font-weight: 600;
  border-radius: 8px;
  transition: background .15s ease, color .15s ease;
}

header nav ul li a:hover, header nav ul li a.active, .nav-link.active {
  background: rgba(0,229,255,0.12);
  color: var(--primary-color) !important;
}

header nav ul li:first-child a, .navbar-brand { font-weight: 800; color: var(--primary-color) !important; font-size: 1.15rem; }

/* Mobile nav fallback */
.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border-color);
  padding: .35rem .6rem;
  border-radius: 8px;
  font-size: 1.05rem;
  cursor: pointer;
}

@media (max-width: 768px) {
  header nav, .navbar { padding: .75rem; }
  .nav-toggle { display: inline-block; margin-left: .5rem; }
  header nav ul { display: none; }
  header nav ul.open { display: flex; flex-direction: column; gap: .5rem; margin-top: .75rem; }
  .navbar-nav .nav-user { margin-left: 0; }
  header nav ul li a { padding: .6rem .75rem; }
}

/*--------------------------------------------------------------
# Admin form centering
--------------------------------------------------------------*/
.admin .center-card,
.admin .contact-card {
  max-width: 720px;
  margin: 0 auto;
}

/* Smaller centered forms (login) */
.admin .center-card.small {
  max-width: 480px;
}

/* When a centered card is placed inside .contact-hero grid, span both columns and center it */
.contact-hero .center-card {
  grid-column: 1 / -1;
  justify-self: center; /* center within grid */
}

/* Alternative centering wrapper (flex) — use by adding .center-wrapper to .contact-hero */
.contact-hero.center-wrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 0;
}

.contact-hero.center-wrapper .center-card {
  margin: 0;
}

/* On narrow screens ensure proper width */
@media (max-width: 480px) {
  .contact-hero .center-card.small { max-width: 100%; padding: 0 1rem; }
  .contact-hero.center-wrapper { padding: 1rem 0; }
}

/*--------------------------------------------------------------
# Profile avatar on home
--------------------------------------------------------------*/
.profile-hero {
  display: flex;
  gap: 1.25rem;
  align-items: center;
}

.profile-avatar {
  width: 200px;
  height: 200px;
  border-radius: 999px;
  object-fit: cover;
  border: 6px solid var(--surface-soft);
  box-shadow: 0 14px 36px rgba(0,0,0,0.35);
}

.skill-bar { background:#1c2a46;border-radius:999px;padding:6px;margin-top:.5rem }
.skill-fill { background:var(--primary-color);height:14px;border-radius:999px }

/* Smaller skill cards grid */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(160px, 1fr));
  gap: 0.75rem;
}

@media (max-width: 900px) {
  .skills-grid { grid-template-columns: repeat(2, minmax(160px, 1fr)); }
}

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

.skill-icon { display:inline-block; width:28px; height:28px; vertical-align:middle; margin-right:.5rem; }
.skill-title { display:flex; align-items:center; gap:.5rem; }

.skills-grid .card { padding: .5rem; border-radius:10px; }
.skills-grid .card .card-body { padding: .6rem; }
.skills-grid .card .card-title { font-size: 1rem; margin-bottom: .5rem }

.languages-grid { display:grid; grid-template-columns: repeat(2, minmax(160px, 1fr)); gap: .75rem; }
.language-flag { font-size: 1.4rem; margin-right: .5rem; }
.language-level { font-weight:600; color:var(--dark-color); margin-left:.5rem; background:var(--surface-soft); border:1px solid var(--border-color); padding:3px 8px; border-radius:6px; font-size:.95rem }

@media (max-width: 480px) {
  .skills-grid { grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); }
  .languages-grid { grid-template-columns: repeat(1, minmax(140px, 1fr)); }
}

@media (max-width: 680px) {
  .profile-hero { flex-direction: column; text-align: center; }
  .profile-avatar { width: 160px; height: 160px; }
}

/*--------------------------------------------------------------
# Lists and items
--------------------------------------------------------------*/
.list { display: grid; gap: 1rem; }
.item { background: var(--surface-color); border-radius: 10px; padding: 1rem; border: 1px solid var(--border-color); box-shadow: var(--card-shadow); }

/*--------------------------------------------------------------
# Education & Social
--------------------------------------------------------------*/
.edu-grid { display:grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap:1rem; }
.edu-card { padding:1rem; border-radius:12px; background:var(--surface-color); box-shadow:var(--card-shadow); border:1px solid var(--border-color) }
.edu-card h4{ margin:0 0 .5rem }
.edu-card .meta{ font-size:.95rem; color:var(--secondary-color) }

/* Home video embed */
.home-video {
  max-width: 900px;
  margin: 1.5rem auto 0;
}

.home-video iframe {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 16 / 9;
  border: 0;
  border-radius: 12px;
  box-shadow: 0 0 0 1px var(--border-color), 0 10px 30px rgba(0,0,0,.35);
}

.social-links{ display:flex; gap:.75rem; align-items:center; flex-wrap:wrap }
.btn-social{ display:inline-flex; gap:.5rem; align-items:center; padding:.5rem .75rem; border-radius:999px; border:1px solid var(--border-color); background:var(--surface-color); color:var(--dark-color); text-decoration:none }
.btn-social svg{ width:18px;height:18px; display:block }
.btn-social.linkedin{ border-color:#0077b5; color:#0077b5 }

.badge-hidden { background:#fde2e6; color:#842029; padding:4px 8px; border-radius:999px; font-size:.85rem; display:inline-block; margin-left:.5rem; }

.project-category { display:inline-block; background:rgba(139,92,246,.18); color:#d8c8ff; padding:4px 8px; border-radius:999px; font-size:.85rem; margin-top:.25rem }
.project-skills { display:flex; gap:.5rem; flex-wrap:wrap; margin-top:.5rem }
.project-skills .tag { background:#1b2a47; color:#d7e3f4; padding:4px 8px; border-radius:6px; font-size:.85rem; border:1px solid var(--border-color) }

/* filter form small tweaks */
section form select { padding:.35rem .5rem; border:1px solid var(--border-color); border-radius:6px; background:var(--surface-color); color:var(--dark-color) }
section form label { font-size:.95rem }
.btn-social.github,
.btn-social.github:visited,
.btn-social.github:hover,
.btn-social.github:focus {
  border-color: var(--primary-color);
  color: var(--primary-color) !important;
  background: rgba(0,229,255,0.08);
}

.btn-social.github span,
.btn-social.github:visited span,
.btn-social.github:hover span,
.btn-social.github:focus span {
  color: inherit !important;
}
.btn-social:hover{ transform:translateY(-2px); box-shadow:0 8px 24px rgba(0,229,255,0.18); border-color:var(--primary-color) }

/* admin/social preview */
.social-preview svg{ width:20px;height:20px; display:block }
.social-preview{ display:inline-flex; align-items:center; justify-content:center; width:28px }
/*--------------------------------------------------------------
# Admin tweaks
--------------------------------------------------------------*/
.admin .button, .admin .btn { margin-right: .5rem; }

/* Sous-header admin (liens d'action) */
.admin-subheader {
  display:flex;
  gap:0.5rem;
  align-items:center;
  justify-content:center;
  flex-wrap:wrap;
  margin-bottom:1rem;
}
.admin-subheader .btn { margin: .25rem; }
.admin-subheader .btn-primary { box-shadow: 0 6px 18px rgba(13,110,253,0.12); }

/* État actif pour le bouton courant */
.admin-subheader .btn.active {
  background: var(--primary-color);
  border-color: var(--primary-color);
  color: #fff;
  box-shadow: 0 10px 24px rgba(13,110,253,0.14);
  transform: translateY(-2px);
}
.admin-subheader .btn.active:hover {
  opacity: 0.95;
}


/*--------------------------------------------------------------
# Main Content
--------------------------------------------------------------*/
main {
  padding-top: 2rem;
  padding-bottom: 2rem;
}

.section-title {
  text-align: center;
  padding-bottom: 30px;
}

.section-title h2 {
  font-size: 32px;
  font-weight: bold;
  text-transform: uppercase;
  margin-bottom: 20px;
  padding-bottom: 20px;
  position: relative;
  color: var(--dark-color);
  letter-spacing: .08em;
}

.section-title h2::after {
  content: "";
  position: absolute;
  display: block;
  width: 50px;
  height: 3px;
  background: var(--primary-color);
  bottom: 0;
  left: calc(50% - 25px);
}

/*--------------------------------------------------------------
# Cards (Projects, etc.)
--------------------------------------------------------------*/
.card {
  border: 1px solid var(--border-color);
  background: var(--surface-color);
  border-radius: 15px;
  box-shadow: var(--card-shadow);
  transition: transform 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
  overflow: hidden;
}

.card:hover {
  transform: translateY(-6px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.4), 0 0 24px rgba(0,229,255,0.16);
}

.card-img-top {
  border-bottom: 1px solid #eee;
}

.card-body {
  padding: 1.5rem;
}

.card-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--dark-color);
}

.card-text {
  color: #666;
  font-size: 1rem;
}

/* Grid for project cards */
.grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  align-items: stretch;
}

/* ensure cards stretch to the same height */
.grid .card {
  height: 100%;
  display: flex;
  flex-direction: column;
}

/* clickable link that covers the card content */
.card-link {
  display: block;
  color: inherit;
  text-decoration: none;
  flex: 1 1 auto;
}

.card-img-top img {
  width: 100%;
  height: 180px;
  object-fit: cover;
  display: block;
}

.card-img-placeholder {
  width: 100%;
  height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #172645, #0e1830);
  color: #c0d1eb;
  font-weight: 700;
  text-align: center;
  padding: 0 1rem;
}

.placeholder-title {
  font-size: 1rem;
  line-height: 1.2;
  max-height: 3.6rem;
  overflow: hidden;
}

.card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
}

.card-text {
  color: #b2c3dc;
  font-size: 1rem;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 5;
  -webkit-box-orient: vertical;
  margin-bottom: .75rem;
}

.card-summary {
  color: #adc1dc;
  font-size: .95rem;
  margin-bottom: .6rem;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
}

.card-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  background: var(--surface-soft);
}

@media (max-width: 900px) {
  .grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 600px) {
  .grid { grid-template-columns: 1fr; }
}

/*--------------------------------------------------------------
# Project page specific styles
--------------------------------------------------------------*/
.project-page .project-card {
  max-width: 960px;
  margin: 0 auto;
  box-shadow: none; /* simpler look for single project */
}

.project-page .card-img-top img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  display: block;
  border-bottom: none;
}

.project-page .card-img-placeholder {
  height: 420px;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #fafafa, #efefef);
}

/* Project page body: full text, readable spacing */
.project-page .card-body {
  padding: 2rem;
  display: block; /* different from small cards */
}

/* On project page we want the full description, not a truncated card */
.project-page .card-text {
  display: block !important;
  -webkit-line-clamp: unset !important;
  -webkit-box-orient: unset !important;
  overflow: visible !important;
  text-overflow: unset !important;
  white-space: normal !important;
  font-size: 1.05rem;
  line-height: 1.75;
  color: #d5e3f5;
  margin-bottom: 1rem;
}

.project-page .card-title {
  font-size: 1.8rem;
}

@media (max-width: 900px) {
  .project-page .card-img-top img,
  .project-page .card-img-placeholder { height: 320px; }
}

@media (max-width: 600px) {
  .project-page .card-img-top img,
  .project-page .card-img-placeholder { height: 220px; }
}

@media (max-width: 600px) {
  .grid { grid-template-columns: 1fr; }
}


/*--------------------------------------------------------------
# Forms
--------------------------------------------------------------*/
.form-control {
  border-radius: 0.5rem;
  border: 1px solid var(--border-color);
  padding: 0.75rem 1rem;
  background: var(--surface-color);
  color: var(--dark-color);
  transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 0 0 0.2rem rgba(0, 229, 255, 0.25);
}

.btn {
  border-radius: 50px;
  padding: 0.75rem 1.5rem;
  font-weight: 600;
  transition: all 0.3s ease;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), #34d9ff);
  border-color: var(--primary-color);
  color: #06121f;
}

.btn-primary:hover {
  background: linear-gradient(135deg, #3ee7ff, var(--primary-color));
  border-color: #67eeff;
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 229, 255, 0.35);
}

/*--------------------------------------------------------------
# Contact page
--------------------------------------------------------------*/
.contact-page {
  max-width: 980px;
  margin: 0 auto;
  padding: 3rem 1rem;
}

.contact-hero {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 2rem;
  align-items: start;
  margin-bottom: 2rem;
}

.contact-card {
  background: var(--surface-color);
  border-radius: 14px;
  padding: 1.25rem;
  border: 1px solid var(--border-color);
  box-shadow: var(--card-shadow);
}

.contact-form {
  display: grid;
  gap: 1rem;
}

.form-group {
  display: grid;
  gap: .5rem;
}

.form-group label {
  font-weight: 600;
}

.form-control {
  border-radius: 0.75rem;
  border: 1px solid var(--border-color);
  padding: .75rem 1rem;
  background: var(--surface-color);
  color: var(--dark-color);
  transition: border-color .15s ease, box-shadow .15s ease;
}

.form-control:focus {
  border-color: var(--primary-color);
  box-shadow: 0 6px 20px rgba(0,229,255,0.18);
  outline: none;
}

textarea.form-control {
  min-height: 160px;
  resize: vertical;
}

.contact-aside {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-info {
  padding: 1rem;
  border-radius: 10px;
  background: linear-gradient(180deg, #13203a, #0e1830);
  border: 1px solid var(--border-color);
}

.contact-info p { margin: .25rem 0; color: var(--secondary-color); }

.contact-actions { display:flex; gap:.75rem; align-items:center; margin-top:.5rem; }

.btn-send { min-width: 160px; }

/* Success / error alerts specific to contact */
.contact-alert { margin-bottom: 1rem; }

/* Responsive */
@media (max-width: 900px) {
  .contact-hero { grid-template-columns: 1fr; }
  .contact-aside { order: 2; }
}

@media (max-width: 480px) {
  .contact-page { padding: 2rem .75rem; }
  .btn-send { width: 100%; }
}

/*--------------------------------------------------------------
# Footer
--------------------------------------------------------------*/
footer, .site-footer {
  background-color: #060a12;
  color: #b7c9e5;
  padding: 2rem 0;
  margin-top: 4rem;
  border-top: 1px solid var(--border-color);
}

footer a, .site-footer a {
  color: #8ab9ff;
}

footer a:hover, .site-footer a:hover {
  color: #c5dbff;
}

.site-footer .container, footer .container {
  text-align: center;
}

/*--------------------------------------------------------------
# Alerts
--------------------------------------------------------------*/
.alert {
  border-radius: 0.5rem;
  padding: 1rem 1.25rem;
}

.alert-success {
    background-color: #d1e7dd;
    border-color: #badbcc;
    color: #0f5132;
}

.alert-danger {
    background-color: #f8d7da;
    border-color: #f5c2c7;
    color: #842029;
}

/*--------------------------------------------------------------
# Responsive
--------------------------------------------------------------*/
@media (max-width: 768px) {
  .navbar-nav {
    text-align: center;
  }
}