/* Reset and Base Styles */
* { margin: 0; padding: 0; box-sizing: border-box; }

/* Theme Variables */
:root{
  --bg:#f9fafb;
  --card:#ffffff;
  --text:#111827;
  --muted:#6b7280;
  --border:#e5e7eb;
  --ring:rgba(17,24,39,.12);
}

body{
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;
  line-height:1.6;
  color:#374151;
  background-color:var(--bg);
}

.container{ min-height:100vh; }
.layout{ max-width:1280px; margin:0 auto; display:flex; flex-direction:column; }

/* Sidebar */
.sidebar{ background-color:var(--card); padding:2rem; }
.sidebar-content{ display:flex; flex-direction:column; gap:1.5rem; }

.profile-image{
  width:160px; height:160px; border-radius:50%; object-fit:cover; border:4px solid #f3f4f6;
  margin:0 auto; display:block;
}
.profile-info{ text-align:center; }
.profile-info h1{ font-size:1.875rem; font-weight:700; color:var(--text); margin-bottom:.5rem; }
.subtitle{ color:var(--muted); font-size:1rem; }

/* Navigation */
.navigation{
  display:flex;
  flex-direction:column;
  gap:.5rem;
  padding-top:1rem;
  position: relative;
}

.nav-link{
  display:block;
  padding:.5rem 1rem;
  color:#374151;
  text-decoration:none;
  border-radius:.375rem;
  transition:background-color .2s, color .2s, border-color .2s;
  border:1px solid transparent;
  min-height: 40px;
}
.nav-link:hover{ background-color:#f3f4f6; }
.nav-link.active{ background-color:#111827; color:#fff; border-color:#111827; }

/* Moving black indicator bar */
.nav-indicator{
  position:absolute;
  left: 6px;
  top: 0;
  width: 4px;
  height: 40px;
  background: #111827;
  border-radius: 999px;
  transform: translateY(0);
  transition: transform 220ms ease, height 220ms ease, opacity 220ms ease;
  opacity: 0;
  pointer-events: none;
}

/* Contact Info */
.contact-info{
  padding-top:1.5rem;
  border-top:1px solid var(--border);
  display:flex;
  flex-direction:column;
  gap:.75rem;
  font-size:.875rem;
}
.contact-item{ color:var(--muted); }
.contact-label{ margin-bottom:.25rem; }
.contact-link{ color:var(--text); text-decoration:none; }
.contact-link:hover{ text-decoration:underline; }
.contact-value{ color:var(--text); }

/* Main Content */
.main-content{
  flex:1;
  padding:0;
  display:flex;
  flex-direction:column;
  gap:4rem;
}

/* Keep About/Skills/etc constrained, but let Projects be full width */
.main-content > *:not(.carousel-container):not(#projects){
  padding:0 3rem;
  max-width:960px;
  width:100%;
  margin-left:auto;
  margin-right:auto;
}
.main-content > section:first-of-type{ padding-top:2rem; }
.main-content > section:last-of-type{ padding-bottom:2rem; }

/* Projects section full-width */
.main-content > section#projects{
  width:100%;
  max-width:100%;
  padding:0 3rem;
  margin-left:auto;
  margin-right:auto;
}

.section{ scroll-margin-top:2rem; }
h2{ font-size:1.875rem; font-weight:700; color:var(--text); margin-bottom:1.5rem; }
h3{ font-size:1.25rem; font-weight:600; color:var(--text); margin-bottom:.5rem; }

/* About */
.text-content{ display:flex; flex-direction:column; gap:1rem; }

/* Skills */
.skills-grid{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:1rem;
}

.skill-card{
  position:relative;
  overflow:hidden;
  border-radius:12px;
  border:1px solid rgba(17,24,39,0.10);
  min-height: 180px;
  padding:18px 18px 16px;
  background: #111827;
  box-shadow: 0 10px 25px rgba(0,0,0,.06);
}

.skill-card::before{
  content:"";
  position:absolute;
  inset:0;
  background-image: var(--skill-bg);
  background-size: cover;
  background-position: center;
  filter: grayscale(0.05) contrast(1.08) saturate(1.08);
  transform: scale(1.02);
  opacity: 1;
}

.skill-card::after{
  content:"";
  position:absolute;
  inset:0;
  background:
    linear-gradient(135deg,
      rgba(17,24,39,0.55) 0%,
      rgba(17,24,39,0.40) 45%,
      rgba(17,24,39,0.30) 100%
    );
}

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

.skill-name{
  font-weight:800;
  letter-spacing:0.2px;
  color:#fff;
  margin-bottom:10px;
  font-size:1.05rem;
}

.skill-level{
  color: rgba(255,255,255,.86);
  font-size:0.95rem;
  display:flex;
  flex-direction:column;
  gap:6px;
}

.skill-level p{
  margin:0;
  padding-left: 12px;
  position:relative;
}

.skill-level p::before{
  content:"";
  width:6px;
  height:6px;
  border-radius:50%;
  background: rgba(255,255,255,.65);
  position:absolute;
  left:0;
  top: 10px;
}

.skill-card:hover{
  transform: translateY(-2px);
  transition: transform .2s;
}

/* Projects */
.projects-list{
  display:flex;
  flex-direction:column;
  gap:1.5rem;
}

.project-card{
  background-color:var(--card);
  border-radius:.5rem;
  border:1px solid var(--border);
  overflow:hidden;
  transition:transform .2s, box-shadow .2s;
}
.project-card:hover{ transform:translateY(-2px); box-shadow:0 4px 12px rgba(0,0,0,.1); }

.project-image{
  width:100%;
  height:auto;
  max-height:420px;
  object-fit:contain;
  background:#f3f4f6;
}

/* Project 1 Carousel */
.project-carousel{
  position:relative;
  width:100%;
  height:420px;
  background:#f3f4f6;
  overflow:hidden;
}

.proj-slide{
  position:absolute;
  inset:0;
  opacity:0;
  transition:opacity 500ms ease;
}
.proj-slide.active{ opacity:1; }

.project-carousel img{
  width:100%;
  height:100%;
  object-fit:contain;
  display:block;
}

/* Project carousel buttons */
.proj-btn{
  position:absolute;
  top:50%;
  transform:translateY(-50%);
  width:44px;
  height:44px;
  border-radius:50%;
  border:1px solid rgba(0,0,0,.12);
  background:rgba(17,24,39,0.75);
  color:#fff;
  font-size:28px;
  line-height:1;
  cursor:pointer;
  z-index:5;
  display:flex;
  align-items:center;
  justify-content:center;
  transition:background-color .2s, transform .2s, opacity .2s;
  opacity:.95;
}
.proj-btn:hover{
  background:rgba(17,24,39,0.92);
  transform:translateY(-50%) scale(1.05);
}
.proj-btn.prev{ left:14px; }
.proj-btn.next{ right:14px; }

/* Project dots */
.proj-dots{
  position:absolute;
  bottom:12px;
  left:50%;
  transform:translateX(-50%);
  display:flex;
  gap:8px;
  z-index:5;
}
.proj-dot{
  width:10px;
  height:10px;
  border-radius:50%;
  background:rgba(17,24,39,.25);
  cursor:pointer;
  transition:background-color .2s, transform .2s;
}
.proj-dot.active{
  background:rgba(17,24,39,.75);
  transform:scale(1.05);
}
.proj-dot:hover{ background:rgba(17,24,39,.55); }

.project-content{ padding:1.5rem; }
.project-description{ color:var(--muted); margin-bottom:1rem; line-height:1.6; }

.tags{ display:flex; flex-wrap:wrap; gap:.5rem; }
.tag{
  font-size:.75rem;
  padding:.25rem .5rem;
  border-radius:999px;
  border:1px solid var(--border);
  background:#f9fafb;
  color:#374151;
}

/* Contact */
.contact-intro{ color:#374151; margin-bottom:1.5rem; }
.form-container{ background-color:var(--card); padding:1.5rem; border-radius:.375rem; border:1px solid var(--border); }
.contact-form{ display:flex; flex-direction:column; gap:1rem; }
.form-group{ display:flex; flex-direction:column; }
.form-group label{ color:#374151; margin-bottom:.5rem; font-weight:500; }
.form-group input, .form-group textarea{
  width:100%;
  padding:.5rem 1rem;
  border:1px solid #d1d5db;
  border-radius:.375rem;
  font-family:inherit;
  font-size:1rem;
  transition:all .2s;
}
.form-group input:focus, .form-group textarea:focus{
  outline:none;
  border-color:#9ca3af;
  box-shadow:0 0 0 3px var(--ring);
}
.form-group textarea{ resize:vertical; }
.submit-button{
  padding:.5rem 1.5rem;
  background-color:#111827;
  color:#fff;
  border:none;
  border-radius:.375rem;
  cursor:pointer;
  font-size:1rem;
  font-weight:500;
  transition:background-color .2s;
}
.submit-button:hover{ background-color:#1f2937; }

/* Responsive */
@media (min-width:768px){
  .layout{ flex-direction:row; }
  .sidebar{ width:320px; position:sticky; top:0; height:fit-content; align-self:flex-start; }
  .skills-grid{ grid-template-columns:repeat(2,1fr); }
}

@media (max-width:767px){
  .main-content > *:not(.carousel-container):not(#projects){ padding:0 1.5rem; }
  .main-content > section#projects{ padding:0 1.5rem; }
  .project-carousel{ height:320px; }
  h2{ font-size:1.5rem; }
  .profile-image{ width:120px; height:120px; }
  .profile-info h1{ font-size:1.5rem; }
  .skills-grid{ grid-template-columns:1fr; }
}

/* Floating Chat Button */
.chat-fab{
  position:fixed; right:18px; bottom:18px;
  min-height:56px; width:auto; padding:0 16px;
  border-radius:999px; border:1px solid rgba(0,0,0,.08);
  background:#111827; color:#fff; cursor:pointer;
  font-size:14px; font-weight:700;
  box-shadow:0 10px 30px rgba(0,0,0,.18);
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  z-index:9999;
}
.chat-fab:hover{ background:#1f2937; }
.chat-icon{ font-size:22px; line-height:1; }
.chat-label{ white-space:nowrap; }

@media (max-width:480px){
  .chat-label{ display:none; }
  .chat-fab{ width:56px; padding:0; justify-content:center; }
}

/* Floating Chat Widget */
.chat-widget{
  position:fixed; right:18px; bottom:86px;
  width:min(360px, calc(100vw - 36px)); height:480px;
  background:var(--card); border:1px solid var(--border); border-radius:14px;
  box-shadow:0 18px 45px rgba(0,0,0,.18);
  overflow:hidden; display:none; flex-direction:column; z-index:9999;
}
.chat-widget.open{ display:flex; }

.chat-header{
  padding:12px 14px; background:#111827; color:#fff;
  display:flex; align-items:center; justify-content:space-between;
}
.chat-title{ display:flex; flex-direction:column; gap:2px; }
.chat-subtitle{ font-size:12px; opacity:.85; }

.chat-close{
  background:transparent; border:none; color:#fff; cursor:pointer; font-size:18px;
  padding:6px 8px; border-radius:8px;
}
.chat-close:hover{ background:rgba(255,255,255,.12); }

.chat-body{
  padding:12px; flex:1; overflow-y:auto; background:#f9fafb;
  display:flex; flex-direction:column; gap:10px;
}
.chat-bubble{
  max-width:85%; padding:10px 12px; border-radius:12px;
  font-size:14px; line-height:1.4;
}
.chat-bubble.bot{
  background:#fff; border:1px solid var(--border); color:#111827; align-self:flex-start;
}
.chat-bubble.user{
  background:#111827; color:#fff; align-self:flex-end;
}

.chat-input{
  display:flex; gap:10px; padding:10px; border-top:1px solid var(--border); background:var(--card);
}
.chat-input input{
  flex:1; padding:10px 12px; border:1px solid #d1d5db; border-radius:10px; font-size:14px;
}
.chat-input input:focus{
  outline:none; box-shadow:0 0 0 3px var(--ring); border-color:#9ca3af;
}
.chat-send{
  padding:10px 12px; border-radius:10px; border:none; cursor:pointer;
  background:#111827; color:#fff; font-weight:600;
}
.chat-send:hover{ background:#1f2937; }

/* Reduced motion */
@media (prefers-reduced-motion: reduce){
  *{ scroll-behavior:auto !important; transition:none !important; }
}

/* =========================
   RAG Project Embedded Chat
   ========================= */

.rag-chat{
  margin-top: 1rem;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
  background: var(--card);
  box-shadow: 0 10px 25px rgba(0,0,0,.06);
}

.rag-chat-header{
  padding: 12px 14px;
  background: #111827;
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.rag-chat-title{
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.rag-chat-subtitle{
  font-size: 12px;
  opacity: .85;
}

.rag-chat-clear{
  background: transparent;
  border: 1px solid rgba(255,255,255,.25);
  color: #fff;
  cursor: pointer;
  font-size: 12px;
  font-weight: 700;
  padding: 8px 10px;
  border-radius: 10px;
}
.rag-chat-clear:hover{
  background: rgba(255,255,255,.12);
}

.rag-chat-body{
  padding: 12px;
  height: 280px;
  overflow-y: auto;
  background: #f9fafb;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.rag-chat-bubble{
  max-width: 90%;
  padding: 10px 12px;
  border-radius: 12px;
  font-size: 14px;
  line-height: 1.4;
  white-space: pre-wrap;
  word-wrap: break-word;
}

.rag-chat-bubble.bot{
  background: #fff;
  border: 1px solid var(--border);
  color: #111827;
  align-self: flex-start;
}

.rag-chat-bubble.user{
  background: #111827;
  color: #fff;
  align-self: flex-end;
}

.rag-chat-bubble.loading{
  opacity: .9;
  font-style: italic;
}

.rag-chat-input{
  display: flex;
  gap: 10px;
  padding: 10px;
  border-top: 1px solid var(--border);
  background: var(--card);
}

.rag-chat-input input{
  flex: 1;
  padding: 10px 12px;
  border: 1px solid #d1d5db;
  border-radius: 10px;
  font-size: 14px;
}
.rag-chat-input input:focus{
  outline: none;
  box-shadow: 0 0 0 3px var(--ring);
  border-color: #9ca3af;
}

.rag-chat-send{
  padding: 10px 12px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  background: #111827;
  color: #fff;
  font-weight: 700;
}
.rag-chat-send:hover{
  background: #1f2937;
}

.rag-chat-footnote{
  padding: 10px 12px;
  border-top: 1px solid var(--border);
  background: #ffffff;
}

.rag-chat-status{
  font-size: 12px;
  color: var(--muted);
}