/* ============================================================
   TOKENS
   ============================================================ */
:root{
  --bg: #0A0E13;
  --panel: #10151C;
  --panel-2: #161C25;
  --panel-3: #1B222C;
  --line: rgba(237,239,242,0.09);
  --line-strong: rgba(237,239,242,0.16);
  --text: #EDEFF2;
  --muted: #7C8A99;
  --muted-2: #4E5B69;

  --amber: #F2B84B;
  --amber-soft: rgba(242,184,75,0.12);
  --teal: #5FD4C0;
  --teal-soft: rgba(95,212,192,0.12);
  --danger: #E8735B;

  --font-display: 'Space Grotesk', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-body: 'Inter', sans-serif;

  --radius: 16px;
  --radius-sm: 10px;
  --ease: cubic-bezier(.16,.84,.44,1);
}

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

html{ scroll-behavior: smooth; }

body{
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  line-height: 1.6;
  background-image:
    radial-gradient(circle at 85% 0%, rgba(242,184,75,0.06), transparent 40%),
    radial-gradient(circle at 8% 25%, rgba(95,212,192,0.05), transparent 45%),
    linear-gradient(var(--line) 1px, transparent 1px),
    linear-gradient(90deg, var(--line) 1px, transparent 1px);
  background-size: auto, auto, 64px 64px, 64px 64px;
  background-position: 0 0, 0 0, -1px -1px, -1px -1px;
}

body::before{
  content:"";
  position: fixed;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, transparent 0%, var(--bg) 78%);
  pointer-events: none;
  z-index: 0;
}

a{ color: inherit; text-decoration: none; }
img{ max-width: 100%; display:block; }

/* ============================================================
   LIGHT MODE
   ============================================================ */
body.light{
  --bg: #F6F4EF;
  --panel: #FFFFFF;
  --panel-2: #FBF9F5;
  --panel-3: #F1EEE7;
  --line: rgba(10,14,19,0.09);
  --line-strong: rgba(10,14,19,0.16);
  --text: #14181D;
  --muted: #5E6B78;
  --muted-2: #93A0AB;
  --amber-soft: rgba(242,184,75,0.20);
  --teal-soft: rgba(95,212,192,0.22);
}

/* ============================================================
   REVEAL ON SCROLL
   ============================================================ */
.reveal{
  opacity: 0;
  transform: translateY(18px);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
.reveal.is-visible{
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   NAV
   ============================================================ */
nav{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 18px 6%;
  background: color-mix(in srgb, var(--panel) 88%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line);
  position: sticky;
  top: 0;
  z-index: 100;
}

.logo{
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 19px;
  display:flex;
  align-items:center;
  gap: 9px;
}

.logo-dot{
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 0 4px var(--amber-soft);
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse{
  0%, 100%{ box-shadow: 0 0 0 4px var(--amber-soft); }
  50%{ box-shadow: 0 0 0 7px var(--amber-soft); }
}

.menu{
  display:flex;
  gap: 30px;
  font-size: 14.5px;
  font-family: var(--font-mono);
}

.menu a{
  color: var(--muted);
  transition: color .2s ease;
  position: relative;
  padding-bottom: 2px;
}
.menu a::before{
  content: attr(data-idx);
  color: var(--teal);
  margin-inline-end: 5px;
  opacity: .7;
}
.menu a::after{
  content:"";
  position:absolute;
  left:0; right:0; bottom:-4px;
  height:1px;
  background: var(--amber);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .25s var(--ease);
}
.menu a:hover{ color: var(--text); }
.menu a:hover::after,
.menu a.active::after{ transform: scaleX(1); transform-origin: left; }
.menu a.active{ color: var(--text); }

#theme-toggle{
  background: var(--panel-2);
  border: 1px solid var(--line);
  color: var(--text);
  width: 38px; height: 38px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 16px;
  display:flex; align-items:center; justify-content:center;
  transition: border-color .2s ease, transform .2s ease;
}
#theme-toggle:hover{ border-color: var(--amber); transform: rotate(12deg); }

.menu-toggle{
  display:none;
  flex-direction:column;
  gap:5px;
  background:none;
  border:none;
  cursor:pointer;
  padding: 6px;
}
.menu-toggle span{
  width: 22px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform .2s ease, opacity .2s ease;
}

/* ============================================================
   HERO
   ============================================================ */
.hero{
  padding: 100px 6% 76px;
  text-align: center;
  border-bottom: 1px solid var(--line);
  position: relative;
  z-index: 1;
}

.hero-inner{ max-width: 760px; margin: 0 auto; }

.hero-query{
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--teal);
  direction: ltr;
  background: var(--teal-soft);
  border: 1px solid rgba(95,212,192,0.25);
  display: inline-flex;
  align-items: center;
  padding: 6px 16px;
  border-radius: 999px;
  margin-bottom: 28px;
  white-space: nowrap;
  overflow: hidden;
}

.hero-query .cursor{
  display:inline-block;
  width: 7px; height: 13px;
  background: var(--teal);
  margin-inline-start: 4px;
  animation: blink 1s step-end infinite;
}
@keyframes blink{ 50%{ opacity: 0; } }

.hero h1{
  font-family: var(--font-display);
  font-size: 50px;
  font-weight: 700;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
}

.hero .role{
  font-family: var(--font-mono);
  font-size: 16px;
  color: var(--amber);
  margin-bottom: 18px;
}
.hero .role .dot{ color: var(--muted); margin: 0 6px; }

.hero .tagline{
  color: var(--muted);
  font-size: 16.5px;
  max-width: 500px;
  margin: 0 auto 36px;
}

.hero-actions{
  display:flex;
  gap: 14px;
  justify-content:center;
  flex-wrap: wrap;
  margin-bottom: 44px;
}

.btn{
  padding: 13px 26px;
  border-radius: 12px;
  font-size: 15px;
  font-weight: 600;
  transition: transform .15s ease, filter .15s ease, border-color .15s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}
.btn-primary{
  background: var(--amber);
  color: #14181D;
}
.btn-primary:hover{ filter: brightness(1.08); transform: translateY(-1px); }

.btn-ghost{
  background: transparent;
  border: 1px solid var(--line-strong);
  color: var(--text);
}
.btn-ghost:hover{ border-color: var(--teal); transform: translateY(-1px); }

.hero-stats{
  display:flex;
  justify-content:center;
  gap: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  max-width: 560px;
  margin: 0 auto;
}
.hero-stat{
  flex: 1;
  padding: 16px 10px;
  border-inline-start: 1px solid var(--line);
}
.hero-stat:first-child{ border-inline-start: none; }
.hero-stat b{
  display:block;
  font-family: var(--font-display);
  font-size: 22px;
  color: var(--amber);
}
.hero-stat span{
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--muted);
  direction: ltr;
  display:block;
  margin-top: 3px;
}

/* ============================================================
   SECTION SHARED
   ============================================================ */
.section-head{
  max-width: 1100px;
  margin: 0 auto 30px;
  padding: 0 6%;
}

.eyebrow{
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--teal);
  direction: ltr;
  display:block;
  margin-bottom: 8px;
}

.section-head h2{
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 600;
}

.section-head p{
  color: var(--muted);
  font-size: 15px;
  margin-top: 8px;
  max-width: 560px;
}

section{ position: relative; z-index: 1; }

.about, .skills, .projects, .experience, .resume-section{ padding: 64px 0; }

/* ============================================================
   ABOUT
   ============================================================ */
.about-inner{
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 6%;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 40px;
  align-items: start;
}

.about-text p{
  color: var(--muted);
  font-size: 16px;
  line-height: 1.8;
}

.about-card{
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 24px;
}

.about-row{
  display:flex;
  align-items:center;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14.5px;
}
.about-row:last-child{ border-bottom: none; }
.about-row .k{
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  min-width: 92px;
  direction: ltr;
}
.about-row .v{ color: var(--text); }
.about-row a.v:hover{ color: var(--teal); }

/* ============================================================
   CARDS (skills / projects)
   ============================================================ */
.cards{
  display:grid;
  grid-template-columns: repeat(auto-fit, minmax(240px,1fr));
  gap: 20px;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 6%;
}

.card{
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 26px;
  transition: transform .2s var(--ease), border-color .2s ease;
}
.card:hover{
  transform: translateY(-4px);
  border-color: var(--amber);
}

.card-tag{
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--teal);
  direction: ltr;
  display:inline-block;
  margin-bottom: 12px;
}

.card h3{
  font-family: var(--font-display);
  font-size: 19px;
  margin-bottom: 10px;
}

.card p{ color: var(--muted); font-size: 14.5px; }

.pills{ display:flex; flex-wrap:wrap; gap:8px; margin-top: 4px;}
.pill{
  font-size: 12.5px;
  background: var(--panel-2);
  border: 1px solid var(--line);
  padding: 4px 12px;
  border-radius: 999px;
  color: var(--muted);
  font-family: var(--font-mono);
}

.project-card p{ line-height: 1.6; }
.project-card .card-status{
  display:inline-flex;
  align-items:center;
  gap:6px;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--teal);
  margin-top: 14px;
  direction: ltr;
}
.project-card .card-status i{
  width:6px;height:6px;border-radius:50%;
  background: var(--teal);
  display:inline-block;
}

/* ============================================================
   EXPERIENCE — commit-log style timeline
   ============================================================ */
.timeline{
  max-width: 900px;
  margin: 0 auto;
  padding: 0 6%;
}

.tl-item{
  display:grid;
  grid-template-columns: 130px 24px 1fr;
  gap: 0 20px;
}

.tl-date{
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--muted);
  padding-top: 4px;
  direction: ltr;
  text-align: right;
}

.tl-rail{
  display:flex;
  flex-direction:column;
  align-items:center;
}
.tl-dot{
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--panel);
  border: 2px solid var(--amber);
  margin-top: 4px;
  flex-shrink: 0;
}
.tl-line{
  width: 1px;
  flex: 1;
  background: var(--line);
  margin-top: 4px;
}
.tl-item:last-child .tl-line{ display:none; }

.tl-content{
  padding-bottom: 40px;
}
.tl-content h3{
  font-family: var(--font-display);
  font-size: 18px;
  margin-bottom: 3px;
}
.tl-content .tl-org{
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--teal);
  margin-bottom: 10px;
  display:block;
}
.tl-content ul{
  list-style:none;
  display:flex;
  flex-direction:column;
  gap: 7px;
}
.tl-content li{
  color: var(--muted);
  font-size: 14.5px;
  padding-inline-start: 16px;
  position: relative;
  line-height: 1.6;
}
.tl-content li::before{
  content: "›";
  position: absolute;
  right: 0;
  color: var(--amber);
  font-family: var(--font-mono);
}
[dir="rtl"] .tl-content li::before{ right: auto; left: 0; transform: scaleX(-1); }
.tl-content li{ padding-inline-start: 16px; padding-inline-end: 0; }

/* ============================================================
   RESUME / CV — schema record card
   ============================================================ */
.resume-card{
  max-width: 720px;
  margin: 0 auto;
  padding: 0 6%;
}

.resume-box{
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.resume-box-head{
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding: 16px 22px;
  border-bottom: 1px solid var(--line);
  background: var(--panel-2);
}
.resume-box-head span{
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--muted);
  direction: ltr;
}
.resume-dots{ display:flex; gap:6px; }
.resume-dots i{ width:9px; height:9px; border-radius:50%; background: var(--line-strong); display:block; }

.resume-box-body{
  padding: 26px 22px;
  display:flex;
  align-items:center;
  gap: 20px;
  flex-wrap: wrap;
}

.resume-icon{
  width: 52px; height: 52px;
  border-radius: 12px;
  background: var(--amber-soft);
  color: var(--amber);
  display:flex; align-items:center; justify-content:center;
  font-size: 22px;
  flex-shrink: 0;
}

.resume-info{ flex: 1; min-width: 180px; }
.resume-info h3{ font-family: var(--font-display); font-size: 17px; margin-bottom: 4px; }
.resume-info span{ color: var(--muted); font-size: 13.5px; font-family: var(--font-mono); direction: ltr; display:block; }

.resume-actions{ display:flex; gap: 10px; flex-wrap: wrap; }

.btn-sm{
  padding: 10px 18px;
  font-size: 13.5px;
  border-radius: 10px;
}

/* ============================================================
   CHAT
   ============================================================ */
.chat-container{
  padding: 64px 0 84px;
}

.chat-window{
  max-width: 900px;
  margin: 0 auto;
  padding: 0 6%;
}

#chat-box{
  height: 440px;
  overflow-y: auto;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
  display:flex;
  flex-direction: column;
  gap: 14px;
}

#chat-box::-webkit-scrollbar{ width:6px; }
#chat-box::-webkit-scrollbar-thumb{ background: var(--panel-2); border-radius:4px; }

.chat-empty{
  margin:auto;
  color: var(--muted);
  font-size: 14px;
  text-align:center;
}

.message-user, .message-ai{
  padding: 12px 16px;
  border-radius: 14px;
  width: fit-content;
  max-width: 78%;
  font-size: 15px;
  line-height: 1.6;
}

.message-user{
  background: var(--amber);
  color: #14181D;
  font-weight: 500;
  margin-inline-start: auto;
  border-bottom-left-radius: 4px;
}

.message-ai{
  background: var(--panel-2);
  border: 1px solid var(--line);
  margin-inline-end: auto;
  border-bottom-right-radius: 4px;
}

.loading{
  color: var(--muted);
  font-family: var(--font-mono);
  font-size: 13px;
  padding: 4px 2px;
}

.input-area{
  display:flex;
  gap: 10px;
  margin-top: 18px;
}

.input-area input{
  flex:1;
  padding: 14px 18px;
  border-radius: 12px;
  border: 1px solid var(--line);
  font-size: 15px;
  outline: none;
  background: var(--panel);
  color: var(--text);
  caret-color: var(--amber);
  transition: border-color .15s ease;
}
.input-area input::placeholder{ color: var(--muted); }
.input-area input:focus{ border-color: var(--amber); }

.input-area button{
  padding: 14px 28px;
  background: var(--amber);
  border: none;
  color: #14181D;
  font-weight: 600;
  border-radius: 12px;
  cursor: pointer;
  transition: filter .15s ease;
}
.input-area button:hover{ filter: brightness(1.08); }

/* ============================================================
   FOOTER
   ============================================================ */
footer{
  text-align:center;
  color: var(--muted);
  font-size: 13.5px;
  padding: 30px 0 50px;
  border-top: 1px solid var(--line);
  font-family: var(--font-mono);
  direction: ltr;
  position: relative;
  z-index: 1;
}

/* ============================================================
   FOCUS
   ============================================================ */
a:focus-visible, button:focus-visible, input:focus-visible{
  outline: 2px solid var(--amber);
  outline-offset: 2px;
}

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 760px){
  .menu{
    position: absolute;
    top: 100%;
    right: 0; left: 0;
    background: var(--panel);
    border-bottom: 1px solid var(--line);
    flex-direction: column;
    padding: 16px 6%;
    display: none;
    gap: 16px;
  }
  .menu.open{ display: flex; }
  .menu-toggle{ display:flex; }

  .hero{ padding: 70px 6% 56px; }
  .hero h1{ font-size: 32px; }
  .hero .tagline{ font-size: 14.5px; }
  .hero-stats{ flex-wrap: wrap; }
  .hero-stat{ flex: 1 1 45%; border-inline-start: none; border-top: 1px solid var(--line); }
  .hero-stat:nth-child(1), .hero-stat:nth-child(2){ border-top: none; }

  .about-inner{ grid-template-columns: 1fr; }

  .tl-item{ grid-template-columns: 20px 1fr; }
  .tl-date{ grid-column: 1 / -1; text-align: left; margin-bottom: 6px; }
  .tl-rail{ grid-row: 2; }

  .message-user, .message-ai{ max-width: 88%; }
}

@media (prefers-reduced-motion: reduce){
  .card, .btn, #theme-toggle, .reveal{ transition: none; }
  .logo-dot, .hero-query .cursor{ animation: none; }
  html{ scroll-behavior: auto; }
}