/* ===================================================
   HIMANI GAIRE - PORTFOLIO WEBSITE
   System theme auto-detection + manual toggle
   =================================================== */

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

/* ---------- CSS VARIABLES (LIGHT THEME — Baby Pink 🌸) ---------- */
:root {
  /* Colors */
  --bg-primary: #fff5f7;
  --bg-secondary: #ffffff;
  --bg-card: #ffffff;
  --bg-card-hover: #fef0f3;
  --text-primary: #2d1f2f;
  --text-secondary: #6b5570;
  --text-muted: #a893ad;
  --accent: #e8729a;
  --accent-light: #fde8ef;
  --accent-dark: #d4568a;
  --border: #f3d5de;
  --shadow: rgba(232, 114, 154, 0.06);
  --shadow-lg: rgba(232, 114, 154, 0.12);
  --nav-bg: rgba(255, 245, 247, 0.88);
  --tag-bg: #fde8ef;
  --tag-text: #d4568a;
  --code-bg: #fef0f3;
  --accent-shadow: rgba(232, 114, 154, 0.3);
  --accent-shadow-lg: rgba(232, 114, 154, 0.4);

  /* Typography */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-code: 'Fira Code', monospace;

  /* Spacing */
  --section-padding: 5rem 0;
  --container-max: 1100px;
  --radius: 12px;
  --radius-sm: 8px;

  /* Transitions */
  --transition: 0.3s ease;
}

/* ---------- DARK THEME ---------- */
[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-card: #1e293b;
  --bg-card-hover: #334155;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #64748b;
  --accent: #2dd4bf;
  --accent-light: #042f2e;
  --accent-dark: #5eead4;
  --border: #334155;
  --shadow: rgba(0, 0, 0, 0.2);
  --shadow-lg: rgba(0, 0, 0, 0.4);
  --nav-bg: rgba(15, 23, 42, 0.9);
  --tag-bg: #042f2e;
  --tag-text: #2dd4bf;
  --code-bg: #1e293b;
  --accent-shadow: rgba(45, 212, 191, 0.3);
  --accent-shadow-lg: rgba(45, 212, 191, 0.4);
}

/* Auto system theme detection */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-card: #1e293b;
    --bg-card-hover: #334155;
    --text-primary: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --accent: #2dd4bf;
    --accent-light: #042f2e;
    --accent-dark: #5eead4;
    --border: #334155;
    --shadow: rgba(0, 0, 0, 0.2);
    --shadow-lg: rgba(0, 0, 0, 0.4);
    --nav-bg: rgba(15, 23, 42, 0.9);
    --tag-bg: #042f2e;
    --tag-text: #2dd4bf;
    --code-bg: #1e293b;
    --accent-shadow: rgba(45, 212, 191, 0.3);
    --accent-shadow-lg: rgba(45, 212, 191, 0.4);
  }
}

/* ---------- BASE ---------- */
html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: var(--font-main);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  transition: background-color var(--transition), color var(--transition);
  overflow-x: hidden;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--accent-dark);
}

img {
  max-width: 100%;
  height: auto;
}

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---------- NAVBAR ---------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: background var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
  box-shadow: 0 2px 20px var(--shadow);
}

.nav-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.nav-logo {
  font-family: var(--font-code);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 0.25rem;
}

.nav-links a {
  color: var(--text-secondary);
  font-size: 0.88rem;
  font-weight: 500;
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--accent);
  background: var(--accent-light);
}

/* Theme Toggle */
.theme-toggle {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--text-secondary);
  transition: all var(--transition);
  margin-left: 0.5rem;
}

.theme-toggle:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: rotate(15deg);
}

.icon-moon { display: none; }

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

/* Auto system dark: hide/show icons */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .icon-sun { display: none; }
  :root:not([data-theme="light"]) .icon-moon { display: block; }
}

@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) .icon-sun { display: block; }
  :root:not([data-theme="dark"]) .icon-moon { display: none; }
}

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition);
}

/* ---------- HERO ---------- */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 6rem 1.5rem 3rem;
  position: relative;
}

.hero-content {
  max-width: var(--container-max);
  width: 100%;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3rem;
  align-items: center;
}

.hero-greeting {
  font-size: 1rem;
  color: var(--accent);
  font-weight: 500;
  font-family: var(--font-code);
  margin-bottom: 0.5rem;
}

.hero-name {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 0.75rem;
  letter-spacing: -1px;
}

.hero-tagline {
  font-size: 1.15rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 1rem;
  font-family: var(--font-code);
  font-size: 0.95rem;
}

/* Typing cursor effect */
.typing-effect::after {
  content: '|';
  animation: blink 1s step-end infinite;
  color: var(--accent);
  font-weight: 300;
}

@keyframes blink {
  50% { opacity: 0; }
}

.hero-description {
  color: var(--text-secondary);
  font-size: 1rem;
  max-width: 520px;
  margin-bottom: 1.75rem;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.75rem;
  flex-wrap: wrap;
}

.hero-socials {
  display: flex;
  gap: 1rem;
}

.hero-socials a {
  color: var(--text-muted);
  transition: all var(--transition);
  padding: 0.4rem;
  border-radius: var(--radius-sm);
}

.hero-socials a:hover {
  color: var(--accent);
  transform: translateY(-2px);
}

/* Avatar */
.hero-avatar {
  display: flex;
  justify-content: center;
  align-items: center;
}

.avatar-wrapper {
  text-align: center;
}

.cat-avatar {
  width: 220px;
  height: 220px;
  filter: drop-shadow(0 4px 20px var(--shadow));
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

.avatar-caption {
  color: var(--text-muted);
  font-size: 0.8rem;
  margin-top: 0.75rem;
  font-style: italic;
}

/* Scroll Indicator */
.scroll-indicator {
  position: absolute;
  bottom: 2rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: 0.75rem;
  animation: fadeInUp 1s ease 1s both;
}

.scroll-arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid var(--text-muted);
  border-bottom: 2px solid var(--text-muted);
  transform: rotate(45deg);
  animation: scrollBounce 2s infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: rotate(45deg) translate(0, 0); }
  50% { transform: rotate(45deg) translate(5px, 5px); }
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 1.5rem;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font-main);
  text-decoration: none;
}

.btn-primary {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.btn-primary:hover {
  background: var(--accent-dark);
  border-color: var(--accent-dark);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 15px var(--accent-shadow);
}

.btn-outline {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}

.btn-outline:hover {
  background: var(--accent);
  color: #fff;
  transform: translateY(-2px);
}

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

/* ---------- SECTIONS ---------- */
.section {
  padding: var(--section-padding);
}

.section-alt {
  background: var(--bg-secondary);
}

.section-title {
  font-size: 1.8rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 0.5rem;
  position: relative;
  padding-bottom: 1rem;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 50px;
  height: 3px;
  background: var(--accent);
  border-radius: 2px;
}

.section-subtitle {
  text-align: center;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 1rem auto 2.5rem;
  font-size: 0.95rem;
}

/* ---------- ABOUT ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 3rem;
  margin-top: 2.5rem;
}

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 1rem;
  font-size: 0.95rem;
}

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

.about-details {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.detail-card {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  padding: 1rem 1.25rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: all var(--transition);
}

.detail-card:hover {
  border-color: var(--accent);
  transform: translateX(4px);
}

.detail-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.detail-card h4 {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.15rem;
}

.detail-card p {
  font-size: 0.83rem;
  color: var(--text-secondary);
  margin: 0;
}

.text-muted {
  color: var(--text-muted) !important;
  font-size: 0.78rem !important;
}

/* ---------- SKILLS ---------- */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2.5rem;
}

.skill-category {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all var(--transition);
}

.skill-category:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 20px var(--shadow);
  transform: translateY(-2px);
}

.skill-category h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

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

.skill-tag {
  background: var(--tag-bg);
  color: var(--tag-text);
  padding: 0.3rem 0.75rem;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 500;
  transition: all var(--transition);
}

.skill-tag:hover {
  background: var(--accent);
  color: #fff;
  transform: scale(1.05);
}

/* ---------- EXPERIENCE / TIMELINE ---------- */
.timeline {
  position: relative;
  margin-top: 2.5rem;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  padding-bottom: 2.5rem;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-dot {
  position: absolute;
  left: -2rem;
  top: 0.4rem;
  width: 14px;
  height: 14px;
  background: var(--accent);
  border-radius: 50%;
  border: 3px solid var(--bg-primary);
  transform: translateX(-50%);
  z-index: 1;
}

.timeline-content {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all var(--transition);
}

.timeline-content:hover {
  border-color: var(--accent);
  box-shadow: 0 4px 20px var(--shadow);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}

.timeline-header h3 {
  font-size: 1.1rem;
  font-weight: 700;
}

.timeline-date {
  font-size: 0.8rem;
  font-family: var(--font-code);
  color: var(--accent);
  font-weight: 500;
  background: var(--tag-bg);
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
}

.timeline-company {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.timeline-content ul {
  list-style: none;
  padding: 0;
}

.timeline-content li {
  position: relative;
  padding-left: 1.25rem;
  margin-bottom: 0.5rem;
  font-size: 0.88rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.timeline-content li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

/* ---------- PROJECTS ---------- */
.project-filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 2rem 0;
}

.filter-btn {
  padding: 0.4rem 1rem;
  font-size: 0.82rem;
  font-weight: 600;
  border: 1.5px solid var(--border);
  background: var(--bg-card);
  color: var(--text-secondary);
  border-radius: 20px;
  cursor: pointer;
  font-family: var(--font-main);
  transition: all var(--transition);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
}

.project-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all 0.4s ease;
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 30px var(--shadow-lg);
}

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

.project-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.project-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.project-card p {
  color: var(--text-secondary);
  font-size: 0.85rem;
  line-height: 1.6;
  flex-grow: 1;
  margin-bottom: 0.75rem;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}

.project-tags span {
  background: var(--tag-bg);
  color: var(--tag-text);
  padding: 0.15rem 0.55rem;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 600;
}

.project-link {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
  transition: all var(--transition);
}

.project-link:hover {
  color: var(--accent-dark);
  transform: translateX(4px);
  display: inline-block;
}

.project-links-row {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

/* ---------- CERTIFICATES ---------- */
.certificates-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.cert-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: all var(--transition);
  position: relative;
  overflow: hidden;
}

.cert-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 6px 25px var(--shadow-lg);
}

.cert-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.4s ease;
}

.cert-card:hover::before {
  transform: scaleX(1);
}

.cert-badge {
  display: inline-block;
  padding: 0.2rem 0.6rem;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  margin-bottom: 0.75rem;
}

.cert-badge.cisco {
  background: #049fd910;
  color: #049fd9;
}

.cert-badge.thm {
  background: #88cc1410;
  color: #88cc14;
}

.cert-badge.eccouncil {
  background: #e74c3c10;
  color: #e74c3c;
}

.cert-badge.ibm {
  background: #0f62fe10;
  color: #0f62fe;
}

.cert-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.cert-card p {
  color: var(--text-muted);
  font-size: 0.82rem;
}

.in-progress-badge {
  display: inline-block;
  background: #f59e0b20;
  color: #f59e0b;
  font-size: 0.68rem;
  font-weight: 700;
  padding: 0.1rem 0.5rem;
  border-radius: 4px;
  margin-left: 0.25rem;
}

/* ---------- CONTACT ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 3rem;
  margin-top: 2.5rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.contact-icon {
  font-size: 1.4rem;
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 0.1rem;
}

.contact-item a,
.contact-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin: 0;
}

.contact-item a:hover {
  color: var(--accent);
}

/* Form */
.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.form-group label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.form-group input,
.form-group textarea {
  padding: 0.7rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.88rem;
  font-family: var(--font-main);
  background: var(--bg-primary);
  color: var(--text-primary);
  transition: all var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-light);
}

.form-group textarea {
  resize: vertical;
  min-height: 120px;
}

/* ---------- FOOTER ---------- */
.footer {
  padding: 2rem 0;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-content p {
  color: var(--text-secondary);
  font-size: 0.85rem;
  font-family: var(--font-code);
}

.footer-note {
  color: var(--text-muted) !important;
  font-size: 0.75rem !important;
  margin-top: 0.25rem;
}

/* ---------- SCROLL TO TOP BUTTON ---------- */
.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.4s ease;
  box-shadow: 0 4px 15px var(--accent-shadow);
  z-index: 999;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.scroll-top:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 6px 25px var(--accent-shadow-lg);
}

/* Cute bounce animation */
.scroll-top.visible {
  animation: popIn 0.4s ease;
}

@keyframes popIn {
  0% { transform: scale(0) translateY(20px); }
  70% { transform: scale(1.1) translateY(-3px); }
  100% { transform: scale(1) translateY(0); }
}

/* ---------- ANIMATIONS (Scroll Reveal) ---------- */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 900px) {
  .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-description {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-buttons {
    justify-content: center;
  }

  .hero-socials {
    justify-content: center;
  }

  .hero-avatar {
    order: -1;
  }

  .cat-avatar {
    width: 160px;
    height: 160px;
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .timeline-header {
    flex-direction: column;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--nav-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    flex-direction: column;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border);
    gap: 0;
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
  }

  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .nav-links a {
    padding: 0.6rem 0.75rem;
    display: block;
    width: 100%;
  }

  .theme-toggle {
    margin: 0.5rem 0;
  }

  .section {
    padding: 3.5rem 0;
  }

  .section-title {
    font-size: 1.5rem;
  }

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

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

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

@media (max-width: 480px) {
  .hero-name {
    font-size: 2rem;
  }

  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }

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

  .scroll-top {
    bottom: 1.25rem;
    right: 1.25rem;
    width: 40px;
    height: 40px;
  }
}