/* =========================================================
   ISHWOR POUDEL — PORTFOLIO STYLESHEET
   Design tokens, layout, components, responsive rules.
   ========================================================= */

/* -------------------- DESIGN TOKENS -------------------- */
:root {
  /* Color */
  --bg: #0B0F17;
  --bg-alt: #0E1420;
  --surface: #121826;
  --surface-hover: #161E2E;
  --border: #232B3A;
  --border-light: #2C3648;

  --text-primary: #E7ECF3;
  --text-secondary: #9AA5B1;
  --text-muted: #66707E;

  --accent: #4FD1C5;       /* teal */
  --accent-dim: #3AA89E;
  --accent-2: #F2C14E;     /* warm amber */
  --accent-2-dim: #C79A2E;

  --danger: #F2686C;
  --success: #63D48A;

  /* Type */
  --font-display: 'Space Grotesk', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Courier New', monospace;

  /* Layout */
  --max-width: 1180px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --nav-height: 76px;

  --shadow-glow: 0 0 40px rgba(79, 209, 197, 0.15);
  --transition: 0.25s ease;
}

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

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  background: var(--bg);
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }

a { color: inherit; text-decoration: none; }

ul { list-style: none; }

button { font-family: inherit; cursor: pointer; border: none; background: none; color: inherit; }

input, textarea { font-family: inherit; font-size: 1rem; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* -------------------- TYPOGRAPHY -------------------- */
h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--accent);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  margin-bottom: 16px;
  max-width: 640px;
}

.section-subtitle {
  color: var(--text-secondary);
  max-width: 560px;
  margin-bottom: 48px;
  font-size: 1.02rem;
}

/* -------------------- BUTTONS -------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 13px 26px;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  transition: transform var(--transition), background var(--transition), border-color var(--transition), color var(--transition);
  white-space: nowrap;
}

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

.btn-primary {
  background: var(--accent);
  color: #08110F;
}
.btn-primary:hover { background: #6EE0D5; }

.btn-outline {
  border: 1px solid var(--border-light);
  color: var(--text-primary);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }

.btn-ghost {
  color: var(--text-secondary);
}
.btn-ghost:hover { color: var(--accent-2); }

.btn-small {
  padding: 9px 18px;
  font-size: 0.85rem;
}

.btn-full { width: 100%; justify-content: center; }

/* -------------------- NAVBAR -------------------- */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  background: rgba(11, 15, 23, 0.7);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), background var(--transition);
}

.navbar.scrolled {
  border-bottom-color: var(--border);
  background: rgba(11, 15, 23, 0.92);
}

.nav-container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: 1.15rem;
  color: var(--text-primary);
}
.logo-bracket { color: var(--text-muted); }
.logo-accent { color: var(--accent); }

.nav-links {
  display: flex;
  gap: 36px;
}

.nav-link {
  position: relative;
  font-size: 0.93rem;
  color: var(--text-secondary);
  padding: 6px 0;
  transition: color var(--transition);
}

.nav-link::after {
  content: "";
  position: absolute;
  left: 0; bottom: -4px;
  width: 0;
  height: 2px;
  background: var(--accent);
  transition: width var(--transition);
}

.nav-link:hover { color: var(--text-primary); }
.nav-link.active { color: var(--accent); }
.nav-link.active::after { width: 100%; }

.nav-actions {
  display: flex;
  align-items: center;
  gap: 18px;
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
}
.hamburger span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}
.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); }

/* -------------------- HERO -------------------- */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding-top: var(--nav-height);
  overflow: hidden;
}

#particleCanvas {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, rgba(255,255,255,0.03) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(255,255,255,0.03) 1px, transparent 1px);
  background-size: 48px 48px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 30%, black 40%, transparent 90%);
  z-index: 0;
}

.hero-glow {
  position: absolute;
  border-radius: 50%;
  filter: blur(90px);
  z-index: 0;
  opacity: 0.35;
}
.hero-glow-1 {
  width: 420px; height: 420px;
  background: var(--accent);
  top: -100px; right: 5%;
}
.hero-glow-2 {
  width: 320px; height: 320px;
  background: var(--accent-2);
  bottom: -80px; left: 0%;
  opacity: 0.18;
}

.hero-container {
  position: relative;
  z-index: 1;
  max-width: var(--max-width);
  margin: 0 auto;
  width: 100%;
  padding: 60px 24px;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 60px;
  align-items: center;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--text-secondary);
  border: 1px solid var(--border-light);
  padding: 6px 14px;
  border-radius: 999px;
  margin-bottom: 28px;
}

.status-dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 0 3px rgba(99, 212, 138, 0.2);
  flex-shrink: 0;
  display: inline-block;
}

.hero-name {
  font-size: clamp(2.6rem, 6vw, 4.2rem);
  margin-bottom: 10px;
}

.hero-headline {
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: clamp(1.1rem, 2.4vw, 1.5rem);
  color: var(--accent);
  min-height: 1.6em;
  margin-bottom: 22px;
}

.cursor {
  color: var(--accent-2);
  animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.hero-text {
  color: var(--text-secondary);
  font-size: 1.05rem;
  max-width: 520px;
  margin-bottom: 34px;
}

.hero-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 40px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
}

.hero-meta-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.88rem;
  color: var(--text-muted);
}
.hero-meta-item i { color: var(--accent-dim); }

/* Hero visual: code window + profile badge */
.hero-visual {
  position: relative;
}

.code-window {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-glow), 0 20px 60px rgba(0,0,0,0.4);
}

.code-window-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 16px;
  background: var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot-red { background: #F2686C; }
.dot-yellow { background: #F2C14E; }
.dot-green { background: #63D48A; }

.code-window-title {
  margin-left: 10px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.code-window-body {
  padding: 22px;
  font-family: var(--font-mono);
  font-size: 0.85rem;
  line-height: 1.75;
  overflow-x: auto;
  color: var(--text-secondary);
}

.c-kw { color: #F2686C; }
.c-cls { color: var(--accent-2); }
.c-fn { color: var(--accent); }
.c-var { color: var(--text-primary); }
.c-str { color: var(--accent); }

.profile-badge {
  position: absolute;
  bottom: -30px;
  right: -20px;
  z-index: 2;
}

.profile-img-wrap {
  width: 96px; height: 96px;
  border-radius: 50%;
  border: 3px solid var(--bg);
  outline: 2px solid var(--accent);
  overflow: hidden;
  position: relative;
  background: var(--surface);
}

.profile-img { width: 100%; height: 100%; object-fit: cover; }

.profile-img-placeholder {
  position: absolute;
  inset: 0;
  display: none;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: var(--text-muted);
  background: var(--surface);
}

.img-fallback .profile-img { display: none; }
.img-fallback .profile-img-placeholder { display: flex; }

.scroll-indicator {
  position: absolute;
  bottom: 28px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  z-index: 1;
  animation: bob 2.4s ease-in-out infinite;
}
@keyframes bob {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 8px); }
}

/* -------------------- SECTIONS -------------------- */
.section { padding: 110px 0; }
.section-alt { background: var(--bg-alt); }

/* -------------------- ABOUT -------------------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 56px;
  align-items: start;
}

.about-text p { color: var(--text-secondary); margin-bottom: 18px; max-width: 68ch; }

.learning-box {
  margin-top: 28px;
  padding: 24px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.learning-box h3 {
  font-size: 1rem;
  margin-bottom: 14px;
  color: var(--accent-2);
  display: flex;
  align-items: center;
  gap: 8px;
}

.learning-list li {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-secondary);
  padding: 6px 0;
  font-size: 0.94rem;
}
.learning-list i { color: var(--accent); font-size: 0.5rem; }

.info-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.info-card-header {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 22px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--border);
}

.info-card-avatar {
  width: 52px; height: 52px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  display: flex; align-items: center; justify-content: center;
  color: #08110F;
  font-size: 1.3rem;
  flex-shrink: 0;
}

.info-card-header h3 { font-size: 1.1rem; }
.info-card-header p { color: var(--text-secondary); font-size: 0.85rem; margin-top: 2px; }

.info-row {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  padding: 11px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}
.info-row:last-child { border-bottom: none; }
.info-row dt { color: var(--text-muted); }
.info-row dd { color: var(--text-primary); text-align: right; display: flex; align-items: center; gap: 6px; }

/* -------------------- SKILLS -------------------- */
.skills-filter {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 40px;
}

.filter-btn {
  padding: 9px 18px;
  border: 1px solid var(--border-light);
  border-radius: 999px;
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.filter-btn:hover { color: var(--text-primary); border-color: var(--accent-dim); }
.filter-btn.active { background: var(--accent); color: #08110F; border-color: var(--accent); }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.skill-head-icon-only { display: none; }

.skill-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 22px;
  transition: transform var(--transition), border-color var(--transition);
}
.skill-card:hover { transform: translateY(-4px); border-color: var(--accent-dim); }

.skill-card.hidden { display: none; }

.skill-head {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}
.skill-head i { font-size: 1.3rem; color: var(--accent); }
.skill-head h3 { font-size: 1rem; }

.skill-card p {
  color: var(--text-secondary);
  font-size: 0.87rem;
  margin-bottom: 16px;
  min-height: 40px;
}

.skill-level {
  height: 5px;
  background: var(--border);
  border-radius: 999px;
  overflow: hidden;
  margin-bottom: 14px;
}

.skill-level-fill {
  display: block;
  height: 100%;
  width: 0%;
  background: linear-gradient(90deg, var(--accent-dim), var(--accent));
  border-radius: 999px;
  transition: width 1.1s ease;
}

.skill-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 4px 10px;
  border-radius: 4px;
  background: rgba(242, 193, 78, 0.1);
  color: var(--accent-2);
}

/* -------------------- PROJECTS -------------------- */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 26px;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), border-color var(--transition);
}
.project-card:hover { transform: translateY(-5px); border-color: var(--accent-dim); }

.project-image {
  position: relative;
  height: 160px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.6rem;
  color: var(--accent);
  background:
    radial-gradient(circle at 30% 20%, rgba(79,209,197,0.15), transparent 60%),
    var(--bg-alt);
  border-bottom: 1px solid var(--border);
}

.project-image-placeholder { color: var(--text-muted); font-size: 1.8rem; }

.project-status {
  position: absolute;
  top: 14px; right: 14px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--border-light);
}
.status-live { color: var(--success); border-color: rgba(99,212,138,0.3); background: rgba(99,212,138,0.08); }
.status-progress { color: var(--accent-2); border-color: rgba(242,193,78,0.3); background: rgba(242,193,78,0.08); }
.status-concept { color: var(--text-secondary); }
.status-experimental { color: var(--accent); border-color: rgba(79,209,197,0.3); background: rgba(79,209,197,0.08); }

.project-body { padding: 24px; }
.project-body h3 { font-size: 1.1rem; margin-bottom: 10px; }
.project-body > p { color: var(--text-secondary); font-size: 0.9rem; margin-bottom: 18px; min-height: 60px; }

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}
.project-tech span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 4px 10px;
  border-radius: 4px;
  background: var(--bg-alt);
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.project-links {
  display: flex;
  gap: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.btn-link {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-primary);
  transition: color var(--transition);
}
.btn-link:hover { color: var(--accent); }
.btn-link.disabled { color: var(--text-muted); pointer-events: none; }

/* -------------------- TIMELINE (Education) -------------------- */
.timeline {
  position: relative;
  max-width: 720px;
  padding-left: 32px;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 6px; top: 6px; bottom: 6px;
  width: 2px;
  background: var(--border-light);
}

.timeline-item {
  position: relative;
  padding-bottom: 44px;
}
.timeline-item:last-child { padding-bottom: 0; }

.timeline-marker {
  position: absolute;
  left: -32px;
  top: 4px;
  width: 14px; height: 14px;
  border-radius: 50%;
  background: var(--text-muted);
  border: 3px solid var(--bg-alt);
}
.timeline-marker-active {
  background: var(--accent);
  box-shadow: 0 0 0 4px rgba(79, 209, 197, 0.18);
}
.timeline-marker-future {
  background: transparent;
  border: 2px solid var(--accent-2);
}

.timeline-date {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-2);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.timeline-content h3 { font-size: 1.15rem; margin: 6px 0 8px; }
.timeline-content p { color: var(--text-secondary); font-size: 0.93rem; max-width: 58ch; }

/* -------------------- GOALS -------------------- */
.goals-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  margin-bottom: 64px;
}

.goals-col {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 30px;
}

.goals-col h3 {
  font-size: 1.1rem;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--text-primary);
}
.goals-col h3 i { color: var(--accent); }

.goals-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--border);
  color: var(--text-secondary);
  font-size: 0.94rem;
}
.goals-list li:last-child { border-bottom: none; }
.goals-list i { color: var(--accent-2); margin-top: 3px; font-size: 0.8rem; }

.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  border-top: 1px solid var(--border);
  padding-top: 48px;
}

.stat-item { text-align: center; }

.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  color: var(--accent);
  margin-bottom: 6px;
}

.stat-label {
  font-size: 0.82rem;
  color: var(--text-muted);
}

/* -------------------- CONTACT -------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 50px;
}

.contact-info { display: flex; flex-direction: column; gap: 14px; }

.contact-item {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 16px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  transition: border-color var(--transition), transform var(--transition);
}
.contact-item:hover { border-color: var(--accent-dim); transform: translateX(4px); }
.contact-item-static:hover { transform: none; border-color: var(--border); }

.contact-icon {
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--bg-alt);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent);
  flex-shrink: 0;
}

.contact-item span { font-size: 0.75rem; color: var(--text-muted); display: block; }
.contact-item p { font-size: 0.94rem; color: var(--text-primary); margin-top: 2px; word-break: break-word; }

.contact-form {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.form-group { margin-bottom: 20px; }

.form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 8px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 14px;
  background: var(--bg-alt);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  transition: border-color var(--transition);
  resize: vertical;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  outline: none;
}

.form-group.error input,
.form-group.error textarea {
  border-color: var(--danger);
}

.form-error {
  display: block;
  font-size: 0.78rem;
  color: var(--danger);
  margin-top: 6px;
  min-height: 1em;
}

.form-note {
  margin-top: 16px;
  font-size: 0.88rem;
  text-align: center;
  color: var(--success);
  min-height: 1.2em;
}
.form-note.error-note { color: var(--danger); }

/* -------------------- FOOTER -------------------- */
.footer {
  border-top: 1px solid var(--border);
  background: var(--bg-alt);
  padding: 50px 0 0;
}

.footer-container {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 24px;
  padding-bottom: 36px;
}

.footer-brand p {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 10px;
  max-width: 320px;
}

.footer-social { display: flex; gap: 14px; }

.footer-social a {
  width: 40px; height: 40px;
  border-radius: 50%;
  border: 1px solid var(--border-light);
  display: flex; align-items: center; justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition);
}
.footer-social a:hover { color: var(--accent); border-color: var(--accent); transform: translateY(-3px); }

.footer-bottom {
  border-top: 1px solid var(--border);
  padding: 20px 24px;
  text-align: center;
}
.footer-bottom p { font-size: 0.82rem; color: var(--text-muted); }

/* -------------------- BACK TO TOP -------------------- */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 46px; height: 46px;
  border-radius: 50%;
  background: var(--accent);
  color: #08110F;
  display: flex; align-items: center; justify-content: center;
  font-size: 1rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--transition);
  z-index: 900;
  box-shadow: 0 8px 24px rgba(0,0,0,0.35);
}
.back-to-top.visible { opacity: 1; visibility: visible; transform: translateY(0); }
.back-to-top:hover { background: #6EE0D5; }

/* -------------------- SCROLL REVEAL -------------------- */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.in-view {
  opacity: 1;
  transform: translateY(0);
}

/* -------------------- RESPONSIVE -------------------- */
@media (max-width: 980px) {
  .hero-container { grid-template-columns: 1fr; }
  .hero-visual { max-width: 460px; margin: 0 auto; }
  .about-grid { grid-template-columns: 1fr; }
  .contact-grid { grid-template-columns: 1fr; }
  .goals-columns { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: repeat(2, 1fr); row-gap: 32px; }
}

@media (max-width: 860px) {
  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0; right: 0;
    flex-direction: column;
    gap: 0;
    background: rgba(11, 15, 23, 0.98);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid var(--border);
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.35s ease;
  }
  .nav-links.open { max-height: 480px; }
  .nav-links li { width: 100%; }
  .nav-link { display: block; padding: 16px 24px; }
  .nav-link::after { display: none; }
  .nav-actions .btn-outline { display: none; }
  .hamburger { display: flex; }
}

@media (max-width: 640px) {
  .section { padding: 76px 0; }
  .hero-container { padding: 40px 20px 90px; }
  .hero-buttons { flex-direction: column; align-items: stretch; }
  .hero-meta { flex-direction: column; gap: 10px; }
  .profile-badge { right: 0; }
  .skills-grid { grid-template-columns: 1fr 1fr; }
  .projects-grid { grid-template-columns: 1fr; }
  .stats-bar { grid-template-columns: 1fr 1fr; }
  .footer-container { flex-direction: column; }
}

@media (max-width: 420px) {
  .skills-grid { grid-template-columns: 1fr; }
  .code-window-body { font-size: 0.72rem; }
}