:root {
  /* ============================
     1. LIGHT MODE (COOLORS PALETTE)
     ============================ */
     
  /* Defaults */
  --bg-color: #F1FAEE;
  --text-color: #1D3557; 
  --muted-color: #457B9D; 

  /* Glass Surfaces */
  --glass-bg: rgba(255, 255, 255, 0.65);
  --glass-border: rgba(29, 53, 87, 0.15); 
  --glass-hover: rgba(255, 255, 255, 0.85);
  --glass-shadow: 0 12px 40px rgba(29, 53, 87, 0.08);

  /* Accents */
  --accent: #E63946;  
  --accent2: #457B9D; 

  /* Wave Colors (Light Mode) */
  --wave-1: rgba(168, 218, 220, 0.6);  
  --wave-2: rgba(230, 57, 70, 0.25);   
  --wave-3: rgba(69, 123, 157, 0.35);  

  /* Layout tokens */
  --radius: 18px;
  --max: 1100px;
  --container-pad: 48px;
  --nav-offset: 90px;
}

/* ============================
   2. DARK MODE OVERRIDES
   ============================ */
[data-theme="dark"] {
  --bg-color: #0b1623; 
  --text-color: #F1FAEE; 
  --muted-color: rgba(241, 250, 238, 0.7);

  /* Glass Surfaces */
  --glass-bg: rgba(29, 53, 87, 0.4); 
  --glass-border: rgba(241, 250, 238, 0.15);
  --glass-hover: rgba(29, 53, 87, 0.6);
  --glass-shadow: 0 18px 60px rgba(0, 0, 0, 0.6);

  /* Accents */
  --accent: #E63946;  
  --accent2: #A8DADC; 

  /* Wave Colors */
  --wave-1: rgba(29, 53, 87, 0.7);    
  --wave-2: rgba(230, 57, 70, 0.2);   
  --wave-3: rgba(69, 123, 157, 0.4);  
}

*{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }

body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  color: var(--text-color);
  background-color: var(--bg-color);
  overflow-x:hidden;
  transition: background-color 0.4s ease, color 0.3s ease;
}

/* Accessibility */
.skip-link{
  position:absolute;
  left:-999px;
  top: 12px;
  padding: 10px 12px;
  border-radius: 12px;
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  color: var(--text-color);
  z-index: 999;
}
.skip-link:focus{ left: 12px; }

/* Defaults */
a{ color:inherit; text-decoration:none; }
p{ color: var(--muted-color); line-height:1.65; margin:0; }
h1,h2{ margin:0 0 10px; letter-spacing:-0.02em; }
h2{ font-size: clamp(22px, 2.2vw, 32px); }

/* Focus visibility */
a:focus-visible, button:focus-visible, summary:focus-visible{
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 14px;
}

.container{
  width:min(var(--max), calc(100% - var(--container-pad)));
  margin-inline:auto;
}

/* ============================
   WAVES
   ============================ */
.bg-wave {
  position: fixed;
  z-index: -1;
  pointer-events: none;
  filter: blur(80px); 
  opacity: 0.8;
  border-radius: 50%; 
  animation: wave-drift 20s infinite alternate ease-in-out;
  transition: background-color 0.8s ease;
}

.wave-1 {
  top: -10%; left: -10%; width: 90vw; height: 90vh;
  background: var(--wave-1); transform-origin: center;
}
.wave-2 {
  bottom: -20%; right: -10%; width: 80vw; height: 70vh;
  background: var(--wave-2); animation-delay: -5s; animation-duration: 25s;
}
.wave-3 {
  top: 40%; left: 20%; width: 70vw; height: 60vh;
  background: var(--wave-3); animation-delay: -10s; opacity: 0.6;
}

@keyframes wave-drift {
  0% { transform: translate(0, 0) scale(1) rotate(0deg); }
  50% { transform: translate(30px, -20px) scale(1.05) rotate(5deg); }
  100% { transform: translate(-20px, 30px) scale(0.95) rotate(-3deg); }
}

/* Hero */
.hero{ padding: 74px 0 34px; }

/* Removed .kicker and .status-dot styles */

.hero h1{
  font-size: clamp(38px, 5vw, 62px);
  line-height:1.02;
}

.gradient-text{
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  -webkit-background-clip:text;
  background-clip:text;
  color:transparent;
}

.hero-sub{
  margin-top: 10px;
  font-size: 16px;
  max-width: 62ch;
}

.hero-grid{
  display:grid;
  grid-template-columns: 1.2fr .8fr;
  gap: 34px;
  align-items:center;
}

.hero-row{
  display:flex;
  gap:14px;
  align-items:center;
  flex-wrap:wrap;
  margin-top: 18px;
}

.icon-row{
  display:flex;
  gap:10px;
  align-items:center;
}

.icon-btn{
  width:42px;
  height:42px;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  border-radius:50%; 
  border:1px solid var(--glass-border);
  background: var(--glass-bg);
  color: var(--text-color);
  font-weight:700;
  font-size:14px;
  transition: transform .12s ease, background .2s ease, border-color .2s ease;
}
.icon-btn:hover{
  transform: translateY(-1px);
  background: var(--glass-hover);
  border-color: var(--accent);
}
.icon-btn i{ font-size: 18px; line-height: 1; }

.hero-right{
  display:flex;
  justify-content:center;
}

.photo-frame{
  width: min(420px, 90vw);
  aspect-ratio: 4 / 5;
  border-radius: 28px;
  border: 1px solid var(--glass-border);
  background: linear-gradient(180deg, var(--glass-bg), transparent);
  box-shadow: var(--glass-shadow);
  padding: 10px;
  position:relative;
  overflow:hidden;
}

.photo-frame img{
  position:relative;
  z-index:1;
  width:100%;
  height:100%;
  object-fit:cover;
  border-radius: 20px;
}

/* Nav */
.nav{
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(16px);
  background: var(--glass-bg);
  border-bottom: 1px solid var(--glass-border);
  transition: background 0.3s ease;
}
.nav .container{ padding: 10px 0; }

.nav-links{
  list-style:none;
  margin:0;
  padding:0;
  display:flex;
  gap: 10px;
  flex-wrap:wrap;
  align-items: center;
}
.nav-links a{
  display:inline-block;
  padding:10px 12px;
  border-radius:12px;
  font-size:14px;
  color: var(--muted-color);
  transition: background .2s ease, color .2s ease;
}
.nav-links a:hover{ 
  background: var(--glass-hover); 
  color: var(--text-color);
}

/* Theme Toggle Button */
.theme-btn {
  background: transparent;
  border: 1px solid var(--glass-border);
  color: var(--text-color);
  cursor: pointer;
  padding: 8px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  transition: all 0.3s ease;
}
.theme-btn:hover {
  background: var(--glass-hover);
  transform: rotate(15deg);
  border-color: var(--accent);
}

[data-theme="dark"] .sun-icon { display: block; }
[data-theme="dark"] .moon-icon { display: none; }
[data-theme="light"] .sun-icon { display: none; }
[data-theme="light"] .moon-icon { display: block; }

/* Main */
main{
  padding: 34px 0 10px;
  margin-top: 16px;
}
main::before{
  content:"";
  display:block;
  height:1px;
  background: linear-gradient(90deg, transparent, var(--glass-border), transparent);
  margin: 24px 0 10px;
}

/* Sections */
section.section{
  margin: 18px 0;
  padding: 22px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  border-radius: var(--radius);
  box-shadow: var(--glass-shadow);
  scroll-margin-top: var(--nav-offset);
  transition: background 0.3s ease, border-color 0.3s ease;
}

section.section h2{
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 10px;
  width: 100%;
}

.section-head{ margin-bottom: 14px; }
.section-sub{
  margin-top: 6px;
  max-width: 72ch;
  color: var(--muted-color);
}

/* Grid + cards */
.grid{ display:grid; gap: 14px; }

.card{
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  border-radius: var(--radius);
  box-shadow: var(--glass-shadow);
  padding: 18px;
  transition: background 0.3s ease;
}

/* Buttons */
.actions{
  display:flex;
  gap: 10px;
  flex-wrap:wrap;
  align-items:center;
  margin-top: 20px;
}

.btn{
  display:inline-flex;
  align-items:center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 14px;
  border: 1px solid var(--glass-border);
  background: var(--glass-hover);
  color: var(--text-color);
  transition: transform .12s ease, background .2s ease, border-color .2s ease;
}
.btn:hover{
  transform: translateY(-1px);
  background: var(--glass-border);
  border-color: var(--accent);
}
.btn-ghost{
  background: transparent;
  color: var(--muted-color);
}
.btn-ghost:hover {
  color: var(--text-color);
}

/* Tags */
.tags{
  display:flex;
  flex-wrap:wrap;
  gap: 8px;
  margin-top: 12px;
}
.tag{
  font-size: 12px;
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  color: var(--text-color);
}

/* Bullets */
.bullets{
  margin: 10px 0 0;
  padding-left: 18px;
  color: var(--muted-color);
}
.bullets li{ margin: 6px 0; }
.bullets b{ color: var(--text-color); font-weight: 700; }

.desc{
  margin-top: 8px;
  color: var(--muted-color);
  line-height: 1.7;
}

.project-showcase {
  display: block;
  width: 100%;       
  max-width: 100%;   
  height: auto;      
  max-height: 400px; 
  object-fit: cover; 
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  margin-bottom: 16px;
  margin-top: 4px;
}

/* Expandable Cards */
.expando{ padding: 0; overflow: hidden; }

.expando summary{
  list-style: none;
  cursor: pointer;
  user-select: none;
}
.expando summary::-webkit-details-marker{ display:none; }

.expando-summary{
  display:flex;
  align-items:flex-start;
  justify-content:space-between;
  gap: 16px;
  padding: 16px 18px;
}

.expando-core{
  display:flex;
  flex-direction:column;
  gap: 6px;
  min-width: 0;
}

.expando-title{ margin: 0; font-size: 18px; letter-spacing: -0.01em; }

.expando-one{
  color: var(--muted-color);
  line-height: 1.55;
  margin: 0;
  max-width: 70ch;
}

.expando-meta{
  display:flex;
  align-items:center;
  gap: 10px;
  flex-shrink:0;
  color: var(--muted-color);
  font-size: 13px;
}

.time{
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  color: var(--text-color);
  white-space: nowrap;
}

.chev{ transition: transform .2s ease; opacity:.9; }

.expando-body{
  padding: 0 18px 18px;
  border-top: 1px solid var(--glass-border);
  animation: fadeIn .18s ease-out;
}

@keyframes fadeIn{
  from{ opacity: 0; transform: translateY(-2px); }
  to{ opacity: 1; transform: translateY(0); }
}

.expando[open] .chev{ transform: rotate(180deg); }

.expando:not([open]):hover{
  border-color: var(--glass-border);
  background: var(--glass-hover);
}

.split{ display:grid; gap: 14px; margin-top: 12px; }

.mini-h{
  margin: 0;
  font-size: 14px;
  letter-spacing: -0.01em;
  color: var(--text-color);
}

/* Layout */
.expando-grid{ grid-template-columns: repeat(12, 1fr); }
.expando-grid > *{ grid-column: span 12; }

/* Contact list */
.contact-list{
  list-style:none;
  padding: 0;
  margin: 12px 0 0;
  display:flex;
  flex-direction:column;
  gap: 10px;
}
.contact-list li{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
  padding: 10px 12px;
  border: 1px solid var(--glass-border);
  border-radius: 14px;
  background: var(--glass-bg);
}

/* Footer */
.footer{
  margin-top: 44px;
  padding: 26px 0 50px;
  border-top: 1px solid var(--glass-border);
  background: rgba(0,0,0,.05);
}
.footer-row{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap: 12px;
  flex-wrap:wrap;
}
.credit-small {
  font-size: 13px;
  color: var(--muted-color);
  margin-top: 6px;
}
.backtop{
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid var(--glass-border);
  background: var(--glass-bg);
  color: var(--text-color);
}

/* Responsive */
@media (max-width: 640px){
  :root{ --container-pad: 32px; }
  section.section{ padding: 18px; }
  .expando-meta{ align-items:flex-start; flex-direction:column; }
  .time{ white-space: normal; }
}

@media (max-width: 920px){
  .hero-grid{ grid-template-columns: 1fr; }
  .hero-right{ justify-content:flex-start; }
  .photo-frame{ width: min(320px, 90vw); }
}

@media (min-width: 860px){
  .expando-grid > *{ grid-column: span 6; }
  .split{ grid-template-columns: 1fr 1fr; }
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  .bg-wave{ animation:none; }
  .chev{ transition:none; }
  .btn{ transition:none; }
  .icon-btn{ transition:none; }
  .expando-body{ animation:none; }
}