:root {
  --bg: #f4f7fa;      
  --bg2: #f8fafc;        
  --bg3: #f1f5f9;             
  --card: #ffffff;       
  --card-sub: #edf1f6;        
  --nav: rgba(255, 255, 255, 0.88);
  --text: #09152c;             
  --text2: #4b5563;          
  --text3: #9ca3af;           
  --accent: #1a56db;        
  --accent2: #e0f7fa;     
  --accent3: #00E5FF;  
  --border: rgba(9, 21, 44, 0.06);   
  --border2: rgba(11, 27, 58, 0.14);  
  --toggle-bg: #e2e8f0;        
  --tag-bg: #f1f5f9;           
  --tag-text: #374151;         
  --text-muted: #52647c; 
  --shadow: 0 2px 24px rgba(11, 27, 58, 0.06);   
  --shadow2: 0 8px 48px rgba(11, 27, 58, 0.10);  
}

[data-theme="dark"] {
  --bg: #121212;
  --bg2: #181818;
  --bg3: #222222;
  --text: #eeeeee;
  --text2: #b3b3b3;
  --text3: #757575;
  --accent: #2f80ff;  
  --accent2: #0b1b3a;
  --accent3: #00E5FF;      
  --border: rgba(255, 255, 255, 0.07);
  --border2: rgba(255, 255, 255, 0.12);
  --card: #181818;
  --nav: rgba(18, 18, 18, 0.90);
  --shadow: 0 2px 24px rgba(0, 0, 0, 0.4);
  --shadow2: 0 8px 48px rgba(0, 0, 0, 0.5);
  --toggle-bg: #2a2a2a;
  --tag-bg: #222222;
  --tag-text: #e0e0e0;
  --text-muted: #888888;
}
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; text-decoration: none; }
html { scroll-behavior: smooth; }
body {
  font-family: 'DM Sans', sans-serif;
  background: var(--bg);
  color: var(--text);
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease; 
  overflow-x: hidden;
}
h1,h2,h3,h4 { font-family: 'Syne', sans-serif; }

/* NAV */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: var(--nav);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 0 2rem;
  height: 64px;
  display: flex; align-items: center; justify-content: space-between;
  transition: background 0.3s, border-color 0.3s;
}
.nav-logo, a {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--text);
  letter-spacing: -0.03em;
}
.nav-logo span { color: var(--accent); }
.nav-links {
  display: flex; align-items: center; gap: 2rem;
  list-style: none;
}
.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text2);
  text-decoration: none;
  transition: color 0.2s;
  letter-spacing: 0.01em;
}
.nav-links a:hover { color: var(--accent); }


.nav-right {
  display: flex;
  align-items: center;
  gap: 1.5rem; 
}


[data-theme="dark"] #themeToggle {
  background-color: var(--accent); 
  border-color: var(--accent);
}

[data-theme="dark"] #themeToggle::after {
  transform: translateX(20px); 
}



.hamburger {
  display: none; flex-direction: column; gap: 5px;
  background: none; border: none; cursor: pointer; padding: 4px;
}
.hamburger span {
  display: block; width: 22px; height: 2px;
  background: var(--text); border-radius: 2px;
  transition: all 0.3s;
}
.mobile-menu {
  display: none;
  position: fixed; top: 64px; left: 0; right: 0;
  background: var(--nav);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  padding: 1.5rem 2rem;
  z-index: 99;
  flex-direction: column; gap: 1.25rem;
}
.mobile-menu.open { display: flex; }
.mobile-menu a {
  font-size: 1rem; font-weight: 500;
  color: var(--text2); text-decoration: none;
  transition: color 0.2s;
}
.mobile-menu a:hover { color: var(--accent); }

/* SECTIONS */
section { padding: 6rem 2rem; }
.container { max-width: 1100px; margin: 0 auto; }
.section-label {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
  display: flex; align-items: center; gap: 8px;
}
.section-label::before {
  content: '';
  display: inline-block;
  width: 24px; height: 2px;
  background: var(--accent);
  border-radius: 2px;
}
.section-title {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 1rem;
  color: var(--text);
}
.section-sub {
  font-size: 1.05rem;
  color: var(--text2);
  max-width: 520px;
  line-height: 1.75;
}

/* HERO */
#hero {
  min-height: 100vh;
  display: flex; align-items: center;
  padding-top: 80px;
  position: relative;
  overflow: hidden;
}
.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent2);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 1.5rem;
  border: 1px solid rgba(26,107,74,0.2);
}
[data-theme="dark"] .hero-eyebrow { border-color: rgba(46,204,135,0.2); }
.hero-eyebrow::before {
  content: '';
  width: 7px; height: 7px;
  background: var(--accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}
@keyframes pulse {
  0%,100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}
.hero-name {
  font-size: clamp(2.8rem, 6vw, 4.5rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.05;
  margin-bottom: 0.5rem;
  color: var(--text);
}
.hero-name .accent { color: var(--accent); }
.hero-title {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  font-weight: 400;
  color: var(--text2);
  margin-bottom: 1.5rem;
  font-style: italic;
}

.hero-title span { color: var(--accent); }
.hero-desc {
  font-size: 1rem;
  color: var(--text2);
  line-height: 1.8;
  max-width: 480px;
  margin-bottom: 2.5rem;
}
.hero-btns { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn-primary {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent);
  color: #fff;
  padding: 0.875rem 1.75rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  border: none; cursor: pointer;
  transition: all 0.2s;
  font-family: 'DM Sans', sans-serif;
  letter-spacing: 0.01em;
}
.btn-primary:hover { background: var(--accent3); transform: translateY(-1px); box-shadow: 0 6px 20px rgba(26,107,74,0.3); }
.btn-secondary {
  display: inline-flex; align-items: center; gap: 8px;
  background: transparent;
  color: var(--text);
  padding: 0.875rem 1.75rem;
  border-radius: 8px;
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  border: 1.5px solid var(--border2);
  cursor: pointer;
  transition: all 0.2s;
  font-family: 'DM Sans', sans-serif;
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-1px); }
.hero-visual {
  display: flex; justify-content: center; align-items: center;
  position: relative;
}
.hero-card {
  background: var(--card);
  border: 1px solid var(--border2);
  border-radius: 20px;
  padding: 2rem;
  box-shadow: var(--shadow2);
  width: 100%;
  max-width: 400px;
  transition: background 0.3s, border-color 0.3s;
}
.hero-card-header {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 1.5rem;
}


.brand-badge-icon {
  width: 42px;
  height: 42px;
  background: linear-gradient(135deg, #0b1b3a, #152e5b);
  border: 2px solid var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 0.9rem;
  letter-spacing: -0.5px;
  box-shadow: 0 0 12px rgba(0, 229, 255, 0.2);
}


.hero-card-name { font-weight: 700; font-size: 1rem; color: var(--text); }
.hero-card-role { font-size: 0.8rem; color: var(--text3); margin-top: 2px; }
.status-dot {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 0.75rem; color: var(--accent);
  font-weight: 500;
}
.status-dot::before {
  content: ''; width: 6px; height: 6px;
  background: var(--accent); border-radius: 50%;
  animation: pulse 2s infinite;
}
.stat-row {
  display: grid; grid-template-columns: repeat(3, 1fr);
  gap: 0.70rem; margin-bottom: 1.25rem;
}
.stat-item {
  background: var(--bg2);
  border-radius: 10px;
  padding: 0.70rem;
  text-align: center;
}

.stat-num { font-family: 'Syne', sans-serif; font-size: 1.3rem; font-weight: 800; color: var(--text); }
.stat-lbl { font-size: 0.5rem; color: var(--text3); margin-top: 2px; }
.tech-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tech-tag {
  background: var(--tag-bg);
  color: var(--tag-text);
  font-size: 0.75rem;
  letter-spacing: 0.05em;
  font-weight: 500;
  padding: 4px 10px;
  border-radius: 100px;
  border: 1px solid var(--border);
}

/* ABOUT */
#about { background: var(--bg2); }
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 5rem;
  align-items: start;
}
.about-image-wrap {
  position: relative;
}
.about-image-box {
  width: 100%;
  aspect-ratio: 4/5;
  border-radius: 20px;
  background: linear-gradient(135deg, var(--accent2) 0%, var(--bg3) 100%);
  border: 1px solid var(--border);
  display: flex; align-items: center; justify-content: center;
  font-size: 5rem;
  position: relative;
  overflow: hidden;
  height: 100%;
}


.about-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.about-content { padding-top: 1rem; }
.about-text {
  font-size: 1rem;
  color: var(--text2);
  line-height: 1.85;
  margin-bottom: 1.25rem;
}


/* SKILLS */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 3rem;
}
.skill-category {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.3s;
}
.skill-category:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent2);
}
.skill-cat-title {
  font-family: 'Syne', sans-serif;
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 1rem;
  display: flex; align-items: center; gap: 8px;
}
.skill-cat-icon {
  width: 32px; height: 32px;
  background: var(--accent2);
  border-radius: 8px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
}
.skill-pills { display: flex; flex-wrap: wrap; gap: 8px; }
.skill-pill {
  background: var(--tag-bg);
  color: var(--tag-text);
  font-size: 0.8rem;
  font-weight: 500;
  padding: 5px 12px;
  border-radius: 100px;
  border: 1px solid var(--border);
  transition: all 0.2s;
}
.skill-pill:hover {
  background: var(--accent2);
  color: var(--accent);
  border-color: var(--accent);
}

/* SERVICES */
#services { background: var(--bg2); }
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.25rem;
  margin-top: 3rem;
}
.service-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  position: relative;
  overflow: hidden;
  transition: all 0.25s;
}
.service-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.3s;
}
.service-card:hover { transform: translateY(-4px); box-shadow: var(--shadow2); }
.service-card:hover::before { transform: scaleX(1); }
.service-icon {
  width: 48px; height: 48px;
  background: var(--accent2);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.25rem;
}
.service-title {
  font-family: 'Syne', sans-serif;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.6rem;
}
.service-desc {
  font-size: 0.9rem;
  color: var(--text2);
  line-height: 1.75;
  margin-bottom: 1.25rem;
}
.service-features { list-style: none; display: flex; flex-direction: column; gap: 6px; }
.service-features li {
  font-size: 0.82rem;
  color: var(--text3);
  display: flex; align-items: center; gap: 7px;
}
.service-features li::before {
  content: '';
  color: var(--accent);
  font-weight: 700;
  font-size: 0.8rem;
  flex-shrink: 0;
}

/* PROJECTS */
.projects-note {
  display: inline-flex; align-items: center; gap: 8px;
  background: var(--accent2);
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 8px 16px;
  border-radius: 8px;
  margin-bottom: 2rem;
  border: 1px solid rgba(26,107,74,0.2);
}
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.25rem;
}
.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.25s;
}
.project-card:hover { transform: translateY(-4px); box-shadow: var(--shadow2); }
.project-thumb {
  height: 180px;
  background: var(--bg3);
  display: flex; align-items: center; justify-content: center;
  font-size: 3rem;
  border-bottom: 1px solid var(--border);
  position: relative;
  overflow: hidden;
}
.project-thumb-label {
  position: absolute;
  bottom: 12px; left: 12px;
  background: var(--accent);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 100px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.project-body { padding: 1.5rem; }
.project-title {
  font-family: 'Syne', sans-serif;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.5rem;
}
.project-desc {
  font-size: 0.875rem;
  color: var(--text2);
  line-height: 1.7;
  margin-bottom: 1rem;
}
.project-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 1.25rem; }
.project-tag {
  background: var(--tag-bg);
  color: var(--tag-text);
  font-size: 0.72rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 100px;
  border: 1px solid var(--border);
}
.project-links { display: flex; gap: 0.75rem; }
.project-link {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  display: flex; align-items: center; gap: 5px;
  transition: opacity 0.2s;
}
.project-link:hover { opacity: 0.7; }
.project-link.disabled { color: var(--text3); pointer-events: none; }

/* CONTACT */
#contact { background: var(--bg2); }
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 5rem;
  align-items: start;
}
.contact-info { padding-top: 0.5rem; }
.contact-item {
  display: flex; align-items: flex-start; gap: 14px;
  margin-bottom: 1.75rem;
}
.contact-icon {
  width: 44px; height: 44px;
  background: var(--accent2);
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}
.contact-label { font-size: 0.75rem; color: var(--text3); text-transform: uppercase; letter-spacing: 0.08em; font-weight: 600; }
.contact-value { font-size: 0.95rem; color: var(--text); font-weight: 500; margin-top: 3px; }
.contact-form {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2rem;
  box-shadow: var(--shadow);
}
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; margin-bottom: 1rem; }
.form-group { display: flex; flex-direction: column; gap: 6px; margin-bottom: 1rem; }
.form-group:last-of-type { margin-bottom: 0; }
label { font-size: 0.8rem; font-weight: 600; color: var(--text2); letter-spacing: 0.04em; }
input, textarea, select {
  background: var(--bg2);
  border: 1px solid var(--border2);
  border-radius: 10px;
  padding: 0.75rem 1rem;
  font-size: 0.9rem;
  color: var(--text);
  font-family: 'DM Sans', sans-serif;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.3s;
  outline: none;
  width: 100%;
}

.form-input {
  background-color: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
}
input::placeholder, textarea::placeholder { color: var(--text3); }
input:focus, textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent2);
}
textarea { resize: vertical; min-height: 120px; }
.form-submit { margin-top: 1.25rem; }
.form-submit .btn-primary { width: 100%; justify-content: center; font-size: 0.95rem; padding: 1rem; }
.form-success {
  display: none;
  text-align: center;
  padding: 1.5rem;
  color: var(--accent);
  font-weight: 600;
  font-size: 0.95rem;
}

/* FOOTER */
footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
}
.footer-inner { max-width: 1100px; margin: 0 auto; }
.footer-logo {
  font-family: 'Syne', sans-serif;
  font-weight: 800;
  font-size: 1.2rem;
  color: var(--text);
  margin-bottom: 0.5rem;
}
.footer-logo span { color: var(--accent); }
.footer-copy { font-size: 0.82rem; color: var(--text3); margin-top: 0.5rem; }
.footer-links { display: flex; justify-content: center; gap: 2rem; margin: 1rem 0; }
.footer-links a { font-size: 0.82rem; color: var(--text3); text-decoration: none; transition: color 0.2s; }
.footer-links a:hover { color: var(--accent); }


.footer-theme-btn {
  background: transparent;
  border: 1px solid var(--border);
  width: 38px;
  height: 38px;
  border-radius: 8px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  margin: 1rem auto; /* Centers it if your footer is vertical layout stack */
  transition: all 0.3s ease;
}

.footer-theme-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
  background-color: rgba(0, 229, 255, 0.05);
}

.theme-icon {
  width: 18px;
  height: 18px;
  display: block;
}

/* --- SVG GRAPHIC TOGGLE STATES --- */

.sun-circle, .sun-line {
  display: none;
}
.moon-path {
  display: block;
}

[data-theme="light"] .moon-path {
  display: none;
}
[data-theme="light"] .sun-circle,
[data-theme="light"] .sun-line {
  display: block;
}

/* ANIMATIONS */
.fade-up {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s, transform 0.6s;
}
.fade-up.visible { opacity: 1; transform: translateY(0); }

/* RESPONSIVE */
@media (max-width: 900px) {
  .hero-grid, .about-grid, .contact-grid { grid-template-columns: 1fr; gap: 3rem; }
  .hero-visual { display: none; }
  .nav-links { display: none; }
  .hamburger { display: flex; }
  .about-facts { grid-template-columns: 1fr; }
  .form-row { grid-template-columns: 1fr; }
}

@media (max-width: 768px) {
  body, section, footer {
    padding-left: 1.25rem !important;
    padding-right: 1.25rem !important;
    box-sizing: border-box;
  }

  h1, .hero-title, h1 span, .hero-title * {
    font-size: 2.2rem !important;
    line-height: 1.2 !important;
    word-wrap: break-word;
    overflow-wrap: break-word;
  }

  footer .footer-inner {
    display: flex !important;
    flex-direction: column !important;
    align-items: center !important;
    text-align: center !important;
    gap: 1.5rem !important; 
  }

  footer .footer-links {
    display: flex !important;
    flex-direction: row !important;
    flex-wrap: wrap !important;
    justify-content: center !important;
    gap: 1rem 1.25rem !important;
  }
}

@media (max-width: 600px) {
  section { padding: 4rem 1.25rem; }
  nav { padding: 0 1.25rem; }
  .hero-btns { flex-direction: column; }
  .btn-primary, .btn-secondary { width: 100%; justify-content: center; }
  
  h1, .hero-title, h1 span {
    font-size: 1.8rem !important;
  }
  
  footer .footer-links {
    flex-direction: column !important;
    gap: 1rem !important;
  }
}