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

html { scroll-behavior: smooth; }

/* ========================
   THEME TOKENS (DEFAULT: LIGHT)
======================== */
:root {
  /* Core */
  --bg: #f8fafc;
  --text: #0f172a;
  --muted: #334155;
  --muted-2: #475569;

  /* Surfaces */
  --card: rgba(255,255,255,0.75);
  --card-solid: #ffffff;
  --border: rgba(15,23,42,0.12);
  --border-strong: rgba(37,99,235,0.22);
  --shadow: rgba(2,6,23,0.08);

  /* Brand */
  --accent: #2563eb;
  --accent-2: #7c3aed;
  --accent-3: #10b981;

  --gradient: linear-gradient(135deg, var(--accent), var(--accent-2));
  --gradient-soft: linear-gradient(135deg, rgba(37,99,235,0.14), rgba(124,58,237,0.10));

  /* Hero background accents */
  --hero-a1: rgba(37,99,235,0.16);
  --hero-a2: rgba(124,58,237,0.12);
  --hero-a3: rgba(16,185,129,0.10);

  /* Grid */
  --grid-line: rgba(37,99,235,0.08);

  /* Navbar */
  --nav-bg: rgba(248,250,252,0.70);

  /* Profile */
  --profile-bg: linear-gradient(135deg, #ffffff, #eef2ff);
  --floating-bg: rgba(255,255,255,0.85);

  /* Scrollbar */
  --scrollbar-track: var(--bg);
  --scrollbar-thumb: var(--accent);
}

/* DARK THEME OVERRIDES */
html[data-theme="dark"] {
  --bg: #0a0a0f;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --muted-2: #64748b;

  --card: rgba(255,255,255,0.03);
  --card-solid: rgba(15,23,42,0.95);
  --border: rgba(255,255,255,0.07);
  --border-strong: rgba(37,99,235,0.25);
  --shadow: rgba(0,0,0,0.45);

  --hero-a1: rgba(37,99,235,0.15);
  --hero-a2: rgba(124,58,237,0.12);
  --hero-a3: rgba(16,185,129,0.08);

  --grid-line: rgba(37,99,235,0.05);

  --nav-bg: rgba(10, 10, 15, 0.92);

  --profile-bg: linear-gradient(135deg, #1e1b4b, #0f172a);
  --floating-bg: rgba(15,23,42,0.95);

  --scrollbar-track: #0a0a0f;
}

body {
  font-family: 'Inter', 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  overflow-x: hidden;
  line-height: 1.6;
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--scrollbar-track); }
::-webkit-scrollbar-thumb { background: var(--scrollbar-thumb); border-radius: 3px; }

/* ========================
   NAVBAR
======================== */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  padding: 0 0;
  transition: all 0.3s ease;
}

.navbar.scrolled {
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-strong);
  box-shadow: 0 4px 30px var(--shadow);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1.1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  font-size: 1.6rem;
  font-weight: 800;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.5px;
  text-decoration: none;
  cursor: pointer;
}

.nav-links {
  display: flex;
  gap: 2.0rem;
  list-style: none;
  align-items: center;
}

.nav-links a {
  color: var(--muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.3px;
  transition: color 0.3s ease;
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--gradient);
  transition: width 0.3s ease;
  border-radius: 2px;
}

.nav-links a:hover { color: var(--text); }
.nav-links a:hover::after, .nav-links a.active::after { width: 100%; }
.nav-links a.active { color: var(--text); }

.nav-cta {
  background: var(--gradient);
  color: white !important;
  padding: 0.5rem 1.2rem;
  border-radius: 8px;
  font-weight: 600 !important;
}
.nav-cta::after { display: none !important; }
.nav-cta:hover { opacity: 0.92; transform: translateY(-1px); }

/* Theme toggle */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  padding: 0.45rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  cursor: pointer;
  font-weight: 600;
  transition: transform 0.15s ease, border-color 0.25s ease, background 0.25s ease;
}
.theme-toggle:hover {
  transform: translateY(-1px);
  border-color: var(--border-strong);
  background: var(--gradient-soft);
}
.theme-toggle:active { transform: translateY(0); }
.theme-toggle-icon { font-size: 1rem; }
.theme-toggle-text { font-size: 0.85rem; color: var(--muted); }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}
.hamburger span {
  display: block;
  width: 25px; height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.3s ease;
}
.hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.hamburger.open span:nth-child(2) { opacity: 0; }
.hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile Menu */
.mobile-menu {
  display: none;
  position: fixed;
  top: 64px; left: 0; right: 0;
  background: var(--nav-bg);
  backdrop-filter: blur(20px);
  padding: 1.4rem 2rem 2rem;
  border-bottom: 1px solid var(--border-strong);
  flex-direction: column;
  gap: 1.2rem;
  z-index: 999;
}
.mobile-menu.open { display: flex; }

.mobile-menu-top {
  display: flex;
  justify-content: flex-end;
  padding-bottom: 0.2rem;
}

.mobile-menu a {
  color: var(--muted);
  text-decoration: none;
  font-size: 1.05rem;
  font-weight: 600;
  padding: 0.55rem 0;
  border-bottom: 1px solid rgba(15,23,42,0.08);
  transition: color 0.3s;
}
html[data-theme="dark"] .mobile-menu a {
  border-bottom: 1px solid rgba(255,255,255,0.06);
}
.mobile-menu a:hover { color: var(--text); }

.mobile-hire {
  color: var(--accent) !important;
  border-bottom: none !important;
}

/* ========================
   HERO SECTION
======================== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 100px 2rem 60px;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse at 20% 50%, var(--hero-a1) 0%, transparent 60%),
    radial-gradient(ellipse at 80% 20%, var(--hero-a2) 0%, transparent 50%),
    radial-gradient(ellipse at 60% 80%, var(--hero-a3) 0%, transparent 50%);
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 60px 60px;
  opacity: 0.55;
}

.hero-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4rem;
  width: 100%;
  position: relative;
  z-index: 1;
}

.hero-text { flex: 1; max-width: 620px; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(37,99,235,0.10);
  border: 1px solid rgba(37,99,235,0.22);
  color: var(--accent);
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 1.8rem;
  animation: fadeInUp 0.6s ease both;
}

.hero-badge .dot {
  width: 8px; height: 8px;
  background: var(--accent-3);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.55; transform: scale(1.3); }
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: 1rem;
  animation: fadeInUp 0.6s ease 0.1s both;
  letter-spacing: -1px;
}

.hero-title .name {
  background: linear-gradient(135deg, #2563eb, #7c3aed, #10b981);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2vw, 1.4rem);
  color: var(--muted);
  margin-bottom: 1.5rem;
  animation: fadeInUp 0.6s ease 0.2s both;
  font-family: 'Fira Code', monospace;
}

.hero-subtitle .typed-cursor {
  color: var(--accent);
  animation: blink 0.7s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.hero-description {
  font-size: 1.05rem;
  color: var(--muted-2);
  line-height: 1.8;
  margin-bottom: 2.5rem;
  animation: fadeInUp 0.6s ease 0.3s both;
  max-width: 520px;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  animation: fadeInUp 0.6s ease 0.4s both;
}

.btn-primary {
  background: var(--gradient);
  color: white;
  padding: 0.85rem 2rem;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  border: none;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  box-shadow: 0 10px 30px rgba(37,99,235,0.20);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 40px rgba(37,99,235,0.30);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  padding: 0.85rem 2rem;
  border-radius: 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 0.95rem;
  transition: all 0.3s ease;
  border: 1px solid var(--border);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.btn-secondary:hover {
  border-color: var(--border-strong);
  color: var(--accent);
  background: rgba(37,99,235,0.06);
  transform: translateY(-2px);
}

/* Hero Visual */
.hero-visual {
  flex-shrink: 0;
  animation: fadeInRight 0.8s ease 0.2s both;
}

.profile-ring {
  width: 320px;
  height: 320px;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.profile-ring::before {
  content: '';
  position: absolute;
  inset: -3px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2563eb, #7c3aed, #10b981, #2563eb);
  animation: spin 4s linear infinite;
  z-index: 0;
}

@keyframes spin { to { transform: rotate(360deg); } }

.profile-inner {
  width: 310px;
  height: 310px;
  background: var(--profile-bg);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
  font-size: 8rem;
  border: 4px solid var(--bg);
  box-shadow: 0 20px 60px var(--shadow);
}

.floating-badge {
  position: absolute;
  background: var(--floating-bg);
  border: 1px solid var(--border-strong);
  border-radius: 10px;
  padding: 0.5rem 0.8rem;
  font-size: 0.8rem;
  color: var(--muted);
  backdrop-filter: blur(10px);
  white-space: nowrap;
  z-index: 2;
  box-shadow: 0 12px 30px var(--shadow);
}

.floating-badge strong { color: var(--text); font-weight: 700; }

.badge-1 { top: 10px; right: -20px; animation: floatBadge 3s ease-in-out infinite; }
.badge-2 { bottom: 30px; left: -30px; animation: floatBadge 3s ease-in-out 1s infinite; }
.badge-3 { top: 50%; right: -40px; animation: floatBadge 3s ease-in-out 0.5s infinite; }

@keyframes floatBadge {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

/* Scroll indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--muted-2);
  font-size: 0.8rem;
  animation: fadeIn 1s ease 1.5s both;
  z-index: 1;
}
.scroll-arrow {
  width: 20px; height: 20px;
  border-right: 2px solid var(--muted-2);
  border-bottom: 2px solid var(--muted-2);
  transform: rotate(45deg);
  animation: scrollBounce 1.5s ease-in-out infinite;
}
@keyframes scrollBounce {
  0%, 100% { transform: rotate(45deg) translateY(0); }
  50% { transform: rotate(45deg) translateY(5px); }
}

/* ========================
   ABOUT SECTION
======================== */
.about {
  padding: 100px 2rem;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-tag {
  display: inline-block;
  background: rgba(37,99,235,0.10);
  border: 1px solid rgba(37,99,235,0.18);
  color: var(--accent);
  padding: 0.3rem 1rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 1rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 900;
  color: var(--text);
  letter-spacing: -0.5px;
}

.section-title span {
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.about-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.about-text-block p {
  color: var(--muted-2);
  font-size: 1.05rem;
  line-height: 1.9;
  margin-bottom: 1.5rem;
}

.about-text-block p strong { color: var(--text); }

.stats-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1.2rem;
  text-align: center;
  transition: border-color 0.3s, transform 0.3s ease, box-shadow 0.3s ease;
  backdrop-filter: blur(14px);
}
.stat-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: 0 14px 40px var(--shadow);
}

.stat-number {
  font-size: 2rem;
  font-weight: 900;
  background: linear-gradient(135deg, #2563eb, #7c3aed);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--muted-2);
  text-transform: uppercase;
  letter-spacing: 0.8px;
  margin-top: 0.3rem;
}

/* Skills */
.skills-block h3 {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text);
  margin-bottom: 1.5rem;
}

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

.skill-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem 1.2rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  transition: all 0.3s ease;
  cursor: default;
  backdrop-filter: blur(14px);
}

.skill-item:hover {
  border-color: var(--border-strong);
  background: rgba(37,99,235,0.06);
  transform: translateY(-2px);
}

.skill-icon { font-size: 1.4rem; }

.skill-info { flex: 1; }

.skill-name {
  font-size: 0.88rem;
  font-weight: 800;
  color: var(--text);
  display: block;
}
.skill-level {
  font-size: 0.73rem;
  color: var(--muted-2);
  margin-top: 2px;
}

/* ========================
   PROJECTS SECTION
======================== */
.projects {
  padding: 100px 2rem;
  background: rgba(2,6,23,0.02);
}
html[data-theme="dark"] .projects {
  background: rgba(255,255,255,0.01);
}

.projects-container { max-width: 1200px; margin: 0 auto; }

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
  gap: 2rem;
}

.project-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  overflow: hidden;
  transition: all 0.35s ease;
  position: relative;
  backdrop-filter: blur(14px);
}

.project-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-6px);
  box-shadow: 0 22px 70px var(--shadow), 0 0 0 1px rgba(37,99,235,0.12);
}

.project-image-wrapper {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.project-image-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.project-card:hover .project-image-wrapper img {
  transform: scale(1.05);
}

.project-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to bottom, transparent 0%, rgba(2,6,23,0.65) 100%);
  display: flex;
  align-items: flex-end;
  padding: 1rem;
  opacity: 0;
  transition: opacity 0.3s ease;
}
html[data-theme="dark"] .project-overlay {
  background: linear-gradient(to bottom, transparent 0%, rgba(10,10,15,0.90) 100%);
}

.project-card:hover .project-overlay {
  opacity: 1;
}

.overlay-links {
  display: flex;
  gap: 0.8rem;
}

.overlay-btn {
  padding: 0.5rem 1rem;
  border-radius: 8px;
  font-size: 0.82rem;
  font-weight: 800;
  text-decoration: none;
  transition: all 0.2s;
}

.overlay-btn.live {
  background: var(--gradient);
  color: white;
}
.overlay-btn.github {
  background: rgba(255,255,255,0.22);
  color: white;
  backdrop-filter: blur(10px);
}

.overlay-btn:hover { transform: translateY(-2px); opacity: 0.92; }

.project-body { padding: 1.5rem; }

.project-body h3 {
  font-size: 1.15rem;
  font-weight: 900;
  color: var(--text);
  margin-bottom: 0.7rem;
}

.project-body p {
  color: var(--muted-2);
  font-size: 0.9rem;
  line-height: 1.7;
  margin-bottom: 1.2rem;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.2rem;
}

.tech-tag {
  background: rgba(37,99,235,0.10);
  border: 1px solid rgba(37,99,235,0.18);
  color: var(--accent);
  padding: 0.25rem 0.7rem;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
}

.project-links-row {
  display: flex;
  gap: 1rem;
  border-top: 1px solid rgba(15,23,42,0.08);
  padding-top: 1rem;
}
html[data-theme="dark"] .project-links-row {
  border-top: 1px solid rgba(255,255,255,0.06);
}

.project-link {
  color: var(--accent);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  transition: color 0.2s;
}
.project-link:hover { color: var(--accent-2); }

/* ========================
   CONTACT SECTION
======================== */
.contact {
  padding: 100px 2rem;
}

.contact-container {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5rem;
  align-items: start;
}

.contact-info h3 {
  font-size: 1.6rem;
  font-weight: 900;
  color: var(--text);
  margin-bottom: 0.8rem;
}

.contact-info > p {
  color: var(--muted-2);
  font-size: 1rem;
  line-height: 1.8;
  margin-bottom: 2.5rem;
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-method {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.2rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 12px;
  transition: border-color 0.3s, transform 0.3s ease, box-shadow 0.3s ease;
  text-decoration: none;
  color: inherit;
  backdrop-filter: blur(14px);
}
.contact-method:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
  box-shadow: 0 14px 40px var(--shadow);
}

.contact-method-icon {
  width: 42px; height: 42px;
  background: rgba(37,99,235,0.10);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-method-text strong {
  display: block;
  font-size: 0.85rem;
  font-weight: 900;
  color: var(--text);
  margin-bottom: 2px;
}
.contact-method-text span {
  font-size: 0.82rem;
  color: var(--muted-2);
}

/* Contact Form */
.contact-form-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 2.5rem;
  backdrop-filter: blur(14px);
  box-shadow: 0 18px 60px var(--shadow);
}

.contact-form-card h3 {
  font-size: 1.3rem;
  font-weight: 900;
  color: var(--text);
  margin-bottom: 2rem;
}

.form-group { margin-bottom: 1.3rem; }

.form-group label {
  display: block;
  font-size: 0.83rem;
  font-weight: 900;
  color: var(--muted-2);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  background: rgba(255,255,255,0.70);
  border: 1px solid rgba(15,23,42,0.14);
  border-radius: 10px;
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color 0.3s, background 0.3s;
  outline: none;
}
html[data-theme="dark"] .form-group input,
html[data-theme="dark"] .form-group textarea {
  background: rgba(255,255,255,0.04);
  border: 1px solid rgba(255,255,255,0.10);
  color: var(--text);
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  background: rgba(37,99,235,0.06);
}

.form-group input::placeholder,
.form-group textarea::placeholder { color: rgba(71,85,105,0.85); }
html[data-theme="dark"] .form-group input::placeholder,
html[data-theme="dark"] .form-group textarea::placeholder { color: #475569; }

.form-group textarea { resize: vertical; min-height: 130px; }

.form-submit-btn {
  width: 100%;
  background: var(--gradient);
  color: white;
  border: none;
  padding: 0.95rem;
  border-radius: 10px;
  font-size: 1rem;
  font-weight: 900;
  cursor: pointer;
  transition: all 0.3s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  box-shadow: 0 12px 35px rgba(37,99,235,0.22);
}
.form-submit-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 16px 45px rgba(37,99,235,0.30);
}
.form-submit-btn:disabled { opacity: 0.65; cursor: not-allowed; transform: none; }

/* Toast notification */
.toast {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  background: var(--card-solid);
  border: 1px solid var(--border-strong);
  border-radius: 12px;
  padding: 1rem 1.5rem;
  color: var(--text);
  font-weight: 700;
  font-size: 0.9rem;
  z-index: 9999;
  display: flex;
  align-items: center;
  gap: 0.8rem;
  box-shadow: 0 24px 80px var(--shadow);
  animation: slideInRight 0.4s ease;
  max-width: 320px;
}
.toast.success { border-color: rgba(16,185,129,0.40); }
.toast.error { border-color: rgba(239,68,68,0.40); }

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(50px); }
  to { opacity: 1; transform: translateX(0); }
}

/* ========================
   FOOTER
======================== */
.footer {
  background: rgba(2,6,23,0.03);
  border-top: 1px solid var(--border);
  padding: 2rem;
  text-align: center;
}
html[data-theme="dark"] .footer {
  background: rgba(0,0,0,0.35);
}

.footer-content { max-width: 1200px; margin: 0 auto; }

.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-logo {
  font-size: 1.4rem;
  font-weight: 900;
  background: var(--gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  color: var(--muted-2);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 700;
  transition: color 0.3s;
}
.footer-links a:hover { color: var(--muted); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 1.5rem;
  color: var(--muted-2);
  font-size: 0.85rem;
  font-weight: 600;
}

.footer-bottom a { color: var(--accent); text-decoration: none; font-weight: 800; }
.footer-accent { color: var(--accent); font-weight: 900; }

/* ========================
   BACK TO TOP
======================== */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  left: 2rem;
  width: 44px;
  height: 44px;
  background: var(--gradient);
  border: none;
  border-radius: 50%;
  color: white;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 14px 40px rgba(37,99,235,0.28);
  z-index: 999;
  transition: transform 0.2s, box-shadow 0.2s;
}
.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 55px rgba(37,99,235,0.34);
}

/* ========================
   ANIMATIONS
======================== */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeInRight {
  from { opacity: 0; transform: translateX(30px); }
  to { opacity: 1; transform: translateX(0); }
}
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ========================
   RESPONSIVE
======================== */
@media (max-width: 1024px) {
  .about-grid { gap: 3rem; }
  .contact-container { gap: 3rem; }
}

@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: flex; }

  .hero { padding: 80px 1.5rem 60px; }
  .hero-container {
    flex-direction: column-reverse;
    text-align: center;
    gap: 2.5rem;
  }
  .hero-text { max-width: 100%; }
  .hero-buttons { justify-content: center; }
  .profile-ring, .profile-inner { width: 220px; height: 220px; }
  .profile-inner { font-size: 5rem; }
  .floating-badge { display: none; }

  .about-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .stats-row { grid-template-columns: repeat(3, 1fr); }

  .projects-grid { grid-template-columns: 1fr; }

  .contact-container { grid-template-columns: 1fr; gap: 2.5rem; }

  .footer-top { flex-direction: column; align-items: center; text-align: center; }
  .footer-links { flex-wrap: wrap; justify-content: center; gap: 1rem; }

  .skills-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .stats-row { grid-template-columns: 1fr; }
  .hero-title { font-size: 2.2rem; }
}