/* ============================================================
   CHARMSEER PORTFOLIO — style.css
   Theme: Clean Futuristic · Dark/Light Toggle
   ============================================================ */

/* === CSS VARIABLES === */
:root {
  --bg:           #080c12;
  --bg2:          #0d1520;
  --bg3:          #111d2e;
  --text:         #e8edf5;
  --text2:        #8a9ab5;
  --accent:       #00c896; /* #00d4ff; cool cyan*/
  --accent2:      #00a07a; /* #0099bb; */
  --accent-glow:  rgba(0, 200, 150, 0.12);
  --border:       rgba(0, 200, 150, 0.18);
  --border2:      rgba(0, 200, 150, 0.08); 
  /* --accent-glow:  rgba(0, 212, 255, 0.12);
  --border:       rgba(0, 212, 255, 0.18);
  --border2:      rgba(0, 212, 255, 0.08); */
  --card:         rgba(13, 21, 32, 0.95);
  --toggle-bg:    #1a2a3a;
  --nav-bg:       rgba(8, 12, 18, 0.88);
  --clip:         polygon(0 0, calc(100% - 10px) 0, 100% 10px, 100% 100%, 10px 100%, 0 calc(100% - 10px));
}

[data-theme="light"] {
  /* --bg:           #f0f4f8; */
  --bg:           #f5f7f0;  
  --bg2:          #ffffff;
  /* --bg3:          #e4ecf5; */
  --bg3:          #eaf0e8;
  --text:         #0d1520;
  --text2:        #4a6080;
  /* --accent:       #006688;
  --accent2:      #0088aa; */
  --accent:       #00956e;
  --accent2:      #007a5a;
  --accent-glow:  rgba(0, 102, 136, 0.08);
  --border:       rgba(0, 102, 136, 0.22);
  --border2:      rgba(0, 102, 136, 0.10);
  --card:         rgba(255, 255, 255, 0.97);
  --toggle-bg:    #dde6f0;
  --nav-bg:       rgba(240, 244, 248, 0.92);
}

/* === RESET & BASE === */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Syne', sans-serif;
  background: var(--bg);
  color: var(--text);
  transition: background 0.4s ease, color 0.4s ease;
  overflow-x: hidden;
  line-height: 1.6;
}

/* === STARFIELD CANVAS === */
#starfield {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  pointer-events: none;
  z-index: 0;
  opacity: 0.55;
  transition: opacity 0.4s;
}
[data-theme="light"] #starfield {
  opacity: 0.12;
}

/* === CUSTOM CURSOR === */
.cursor {
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 50%;
  position: fixed;
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  transition: transform 0.08s linear;
  mix-blend-mode: screen;
}
[data-theme="light"] .cursor {
  mix-blend-mode: multiply;
}

/* === NAVIGATION === */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.2rem 3rem;
  background: var(--nav-bg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border2);
  transition: background 0.4s, border-color 0.4s;
}

.nav-logo {
  font-family: 'Space Mono', monospace;
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  text-decoration: none;
}

.nav-links {
  display: flex;
  gap: 2.2rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text2);
  text-decoration: none;
  transition: color 0.2s;
  position: relative;
}
.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -3px; left: 0; right: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform 0.2s;
  transform-origin: left;
}
.nav-links a:hover { color: var(--accent); }
.nav-links a:hover::after { transform: scaleX(1); }

/* Dark/light toggle */
.toggle-wrap {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}
.toggle-label {
  font-family: 'Space Mono', monospace;
  font-size: 0.62rem;
  color: var(--text2);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  user-select: none;
}
.toggle {
  width: 44px;
  height: 24px;
  background: var(--toggle-bg);
  border-radius: 12px;
  border: 1px solid var(--border);
  cursor: pointer;
  position: relative;
  transition: background 0.3s, border-color 0.3s;
  flex-shrink: 0;
}
.toggle-thumb {
  position: absolute;
  top: 3px; left: 3px;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--accent);
  transition: transform 0.3s ease, background 0.3s;
}
[data-theme="light"] .toggle-thumb {
  transform: translateX(20px);
}

/* Mobile hamburger */
.nav-mobile-btn {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--accent);
  font-size: 1.2rem;
  padding: 0.3rem 0.6rem;
  cursor: pointer;
  border-radius: 4px;
}

/* Mobile menu overlay */
.mobile-menu {
  display: none;
  position: fixed;
  top: 65px; left: 0; right: 0;
  z-index: 190;
  background: var(--nav-bg);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--border2);
  flex-direction: column;
  padding: 1.5rem 2rem;
  gap: 1.2rem;
}
.mobile-menu.open { display: flex; }
.mobile-link {
  font-family: 'Space Mono', monospace;
  font-size: 0.78rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text2);
  text-decoration: none;
  transition: color 0.2s;
}
.mobile-link:hover { color: var(--accent); }

/* === MAIN WRAPPER === */
main { position: relative; z-index: 1; }

/* === SECTIONS COMMON === */
section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 7rem 3rem;
}

.section-tag {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.6rem;
  display: flex;
  align-items: center;
  gap: 0.65rem;
}
.section-tag::before {
  content: '';
  display: inline-block;
  width: 22px;
  height: 1px;
  background: var(--accent);
  flex-shrink: 0;
}

h3.section-heading {
  font-size: clamp(1.9rem, 4.5vw, 3rem);
  font-weight: 800;
  color: var(--text);
  margin-bottom: 3.5rem;
  letter-spacing: -0.025em;
  line-height: 1.1;
}

/* === HERO === */
#hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-start;
  padding: 9rem 3rem 5rem;
  max-width: 1100px;
  margin: 0 auto;
  position: relative;
}

.hero-tag {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  opacity: 0;
  animation: fadeUp 0.8s 0.2s forwards;
}
.hero-tag::before {
  content: '';
  display: inline-block;
  width: 36px;
  height: 1px;
  background: var(--accent);
}

h1.hero-name {
  font-size: clamp(3.2rem, 8vw, 6.5rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.01em; /* default was -0.03em */
  color: var(--text);
  margin-bottom: 1rem;
  opacity: 0;
  animation: fadeUp 0.8s 0.35s forwards;
}

h2.hero-title {
  font-size: clamp(1rem, 2.5vw, 1.5rem);
  font-weight: 400;
  color: var(--text2);
  margin-bottom: 1.75rem;
  letter-spacing: 0.01em;
  line-height: 1.6;  /* default was -0.03em */
  opacity: 0;
  animation: fadeUp 0.8s 0.5s forwards;
}
h2.hero-title span {
  color: var(--accent);
  font-weight: 700;
}

.hero-desc {
  font-family: 'Space Mono', monospace;
  font-size: 0.78rem;
  color: var(--text2);
  line-height: 1.9;
  max-width: 520px;
  margin-bottom: 2.5rem;
  opacity: 0;
  animation: fadeUp 0.8s 0.65s forwards;
}

.hero-cta {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  opacity: 0;
  animation: fadeUp 0.8s 0.8s forwards;
}

/* Scroll hint */
.hero-scroll-hint {
  position: relative;
  bottom: auto;
  left: auto;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 0.5rem;
  margin-top: -1.5rem;
  opacity: 0;
  animation: fadeIn 1s 1.4s forwards;
}
/* .hero-scroll-hint {
  position: absolute;
  bottom: 3rem;
  left: 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  opacity: 0;
  animation: fadeIn 1s 1.4s forwards;
} */

.scroll-line {
  width: 1px;
  height: 48px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
.scroll-text {
  font-family: 'Space Mono', monospace;
  font-size: 0.58rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--text2);
  writing-mode: vertical-rl;
}

/* === BUTTONS === */
.btn-primary {
  display: inline-block;
  padding: 0.85rem 2.2rem;
  background: var(--accent);
  color: #080c12;
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-decoration: none;
  border: none;
  cursor: pointer;
  clip-path: var(--clip);
  transition: opacity 0.2s, transform 0.2s;
}
.btn-primary:hover {
  opacity: 0.85;
  transform: translateY(-2px);
}

.btn-outline {
  display: inline-block;
  padding: 0.85rem 2.2rem;
  background: transparent;
  color: var(--accent);
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid var(--border);
  cursor: pointer;
  clip-path: var(--clip);
  transition: background 0.2s, transform 0.2s;
}
.btn-outline:hover {
  background: var(--accent-glow);
  transform: translateY(-2px);
}

/* === ABOUT === */
#about .about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 5rem;
  align-items: start;
}

.about-text p {
  font-family: 'Space Mono', monospace;
  font-size: 0.78rem;
  line-height: 1.95;
  color: var(--text2);
  margin-bottom: 1.1rem;
}
.about-text p strong { color: var(--text); }

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border2);
  padding: 1.6rem 1.4rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s;
}
.stat-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
}
.stat-card:hover { border-color: var(--border); }

.stat-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--accent);
  display: block;
  margin-bottom: 0.3rem;
  line-height: 1;
}
.stat-label {
  font-family: 'Space Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text2);
}

/* === SKILLS === */
#skills .skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.skill-group {
  background: var(--card);
  border: 1px solid var(--border2);
  padding: 1.75rem;
  transition: border-color 0.3s, transform 0.3s;
}
.skill-group:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
}

.skill-group-title {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border2);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-tag {
  font-family: 'Space Mono', monospace;
  font-size: 0.62rem;
  padding: 0.3rem 0.75rem;
  background: var(--accent-glow);
  border: 1px solid var(--border);
  color: var(--text2);
  letter-spacing: 0.06em;
  transition: color 0.2s, border-color 0.2s;
}
.skill-tag:hover { color: var(--accent); border-color: var(--accent); }

/* === PROJECTS === */
#projects .projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--card);
  border: 1px solid var(--border2);
  padding: 2rem 1.75rem;
  position: relative;
  overflow: hidden;
  transition: border-color 0.3s, transform 0.3s;
  text-decoration: none;
  display: block;
  color: inherit;
}
.project-card::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, var(--accent-glow) 0%, transparent 60%);
  opacity: 0;
  transition: opacity 0.3s;
  pointer-events: none;
}
.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-5px);
}
.project-card:hover::after { opacity: 1; }

.project-num {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  color: var(--accent);
  letter-spacing: 0.15em;
  margin-bottom: 0.75rem;
  display: block;
}

.project-arrow {
  position: absolute;
  top: 1.5rem; right: 1.5rem;
  font-size: 1.3rem;
  color: var(--border);
  transition: color 0.3s, transform 0.3s;
  line-height: 1;
}
.project-card:hover .project-arrow {
  color: var(--accent);
  transform: translate(3px, -3px);
}

.project-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.6rem;
  padding-right: 2rem;
}

.project-desc {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  color: var(--text2);
  line-height: 1.75;
  margin-bottom: 1.3rem;
}

.project-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.project-tag {
  font-family: 'Space Mono', monospace;
  font-size: 0.6rem;
  padding: 0.2rem 0.65rem;
  border: 1px solid var(--border);
  color: var(--accent);
  letter-spacing: 0.08em;
}

/* === EXPERIENCE === */
#experience .exp-list {
  display: flex;
  flex-direction: column;
}

.exp-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 3rem;
  padding: 2.2rem 0;
  border-bottom: 1px solid var(--border2);
  transition: border-color 0.3s;
}
.exp-item:first-child { border-top: 1px solid var(--border2); }
.exp-item:hover { border-color: var(--border); }

.exp-period {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  color: var(--text2);
  letter-spacing: 0.1em;
  padding-top: 0.25rem;
  flex-shrink: 0;
}

.exp-role {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.25rem;
}

.exp-company {
  font-family: 'Space Mono', monospace;
  font-size: 0.68rem;
  color: var(--accent);
  margin-bottom: 0.9rem;
  letter-spacing: 0.08em;
}

.exp-bullets {
  list-style: none;
}
.exp-bullets li {
  font-family: 'Space Mono', monospace;
  font-size: 0.7rem;
  color: var(--text2);
  line-height: 1.75;
  padding-left: 1.2rem;
  position: relative;
  margin-bottom: 0.4rem;
}
.exp-bullets li::before {
  content: '>';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

/* === CONTACT === */
#contact { text-align: center; }

.contact-inner {
  background: var(--card);
  border: 1px solid var(--border2);
  padding: 4.5rem 3rem;
  position: relative;
  overflow: hidden;
  max-width: 700px;
  margin: 0 auto;
}
.contact-inner::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

#contact h3.section-heading { margin-bottom: 2rem; }

.contact-sub {
  font-family: 'Space Mono', monospace;
  font-size: 0.75rem;
  color: var(--text2);
  line-height: 1.9;
  margin-bottom: 0.5rem;
}

.contact-email {
  font-size: clamp(1.1rem, 3vw, 1.8rem);
  font-weight: 800;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: -0.01em;
  display: block;
  margin: 1.5rem 0 2rem;
  transition: opacity 0.2s;
}
.contact-email:hover { opacity: 0.65; }

.socials {
  display: flex;
  justify-content: center;
  gap: 2rem;
  list-style: none;
  flex-wrap: wrap;
}
.socials a {
  font-family: 'Space Mono', monospace;
  font-size: 0.65rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text2);
  text-decoration: none;
  transition: color 0.2s;
  position: relative;
}
.socials a::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 1px;
  background: var(--accent);
  transform: scaleX(0);
  transition: transform 0.2s;
}
.socials a:hover { color: var(--accent); }
.socials a:hover::after { transform: scaleX(1); }

/* === FOOTER === */
footer {
  text-align: center;
  padding: 2.5rem 3rem;
  border-top: 1px solid var(--border2);
  font-family: 'Space Mono', monospace;
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  color: var(--text2);
  position: relative;
  z-index: 1;
}

/* === SCROLL REVEAL === */
.reveal {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 0.75s ease, transform 0.75s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === KEYFRAMES === */
@keyframes fadeUp {
  to { opacity: 1; transform: translateY(0); }
  from { opacity: 0; transform: translateY(20px); }
}
@keyframes fadeIn {
  to { opacity: 1; }
  from { opacity: 0; }
}
@keyframes scrollPulse {
  0%, 100% { opacity: 1; transform: scaleY(1); }
  50%       { opacity: 0.4; transform: scaleY(0.7); }
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  nav { padding: 1rem 1.5rem; }

  .nav-links { display: none; }
  .nav-mobile-btn { display: block; }

  #hero { padding: 7rem 1.5rem 4rem; }
  section { padding: 5rem 1.5rem; }

  #about .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .exp-item {
    grid-template-columns: 1fr;
    gap: 0.4rem;
  }
  .exp-period { padding-top: 0; }

  .contact-inner { padding: 3rem 1.5rem; }

  .socials { gap: 1.25rem; }

  .hero-scroll-hint { display: none; }
}

@media (max-width: 480px) {
  h1.hero-name { font-size: 2.8rem; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
}