/* ============================================================
   COMPONENTS
   ============================================================ */

/* ============================================================
   NAVBAR
   ============================================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--section-x);
  z-index: 1000;
  transition: background var(--transition), border-color var(--transition);
  background: transparent;
  border-bottom: 1px solid transparent;
}

.navbar.scrolled {
  background: rgba(250, 250, 250, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom-color: var(--border);
}

[data-theme="dark"] .navbar.scrolled {
  background: rgba(9, 9, 11, 0.85);
}

.nav-logo {
  display: flex;
  align-items: center;
}

.nav-logo img {
  display: block;
  width: 36px;
  height: 36px;
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ---- Language Switch ---- */
.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.lang-btn {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.125rem 0.25rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition);
}

.lang-btn:hover {
  color: var(--text-primary);
}

.lang-btn:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.lang-btn.active,
.lang-btn[aria-pressed="true"] {
  color: var(--accent);
  font-weight: 600;
}

.lang-sep {
  color: var(--text-tertiary);
  font-size: 0.8125rem;
  user-select: none;
}

.theme-toggle {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  color: var(--text-secondary);
  transition: all var(--transition);
  font-size: 0.875rem;
}

.theme-toggle:hover {
  background: var(--bg-subtle);
  color: var(--text-primary);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
}

.hamburger span {
  display: block;
  width: 18px;
  height: 1.5px;
  background: var(--text-primary);
  border-radius: 1px;
  transition: all var(--transition);
}

.hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(4px, 4px);
}

.hamburger.open span:nth-child(2) {
  opacity: 0;
}

.hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(4px, -4px);
}

/* Mobile Nav */
.mobile-nav {
  display: none;
  position: fixed;
  top: var(--nav-h);
  left: 0;
  right: 0;
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
  padding: 1rem var(--section-x);
  z-index: 999;
  flex-direction: column;
  gap: 0;
}

.mobile-nav.open {
  display: flex;
}

.mobile-nav a {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-subtle);
  transition: color var(--transition);
}

.mobile-nav a:last-child {
  border-bottom: none;
}

.mobile-nav a:hover {
  color: var(--text-primary);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-h);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 4rem;
  align-items: center;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--section-x);
  width: 100%;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  color: var(--text-tertiary);
  margin-bottom: 1.25rem;
}

.hero-eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
}

.hero-name {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 5.5vw, 3.75rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.05;
  color: var(--text-primary);
  margin-bottom: 1.25rem;
}

.hero-headline {
  font-size: 1.0625rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  min-height: 1.6em;
}

#typed-text {
  color: var(--text-primary);
}

.cursor {
  display: inline-block;
  width: 1.5px;
  height: 1em;
  background: var(--text-tertiary);
  margin-left: 1px;
  vertical-align: middle;
  animation: blink 1s step-end infinite;
}

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

.hero-desc {
  font-size: 0.9375rem;
  color: var(--text-secondary);
  max-width: 480px;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  gap: 2rem;
  margin-bottom: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

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

.stat-num {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.2;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-tertiary);
  margin-top: 0.125rem;
}

.hero-btns {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

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

.avatar-container {
  position: relative;
  width: 280px;
  height: 280px;
  border-radius: 20px;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

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

.avatar-status {
  position: absolute;
  bottom: 12px;
  right: 12px;
  display: flex;
  align-items: center;
  gap: 0.375rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 0.375rem 0.75rem;
  font-size: 0.6875rem;
  font-weight: 600;
  color: var(--text-secondary);
  box-shadow: var(--shadow-sm);
}

.avatar-status::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
}

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border-radius: var(--radius);
  font-size: 0.8125rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: all var(--transition);
  white-space: nowrap;
}

.btn svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
}

.btn-primary {
  background: var(--text-primary);
  color: var(--text-inverse);
}

.btn-primary:hover {
  background: var(--text-secondary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

[data-theme="dark"] .btn-primary {
  background: #fff;
  color: #000;
}

[data-theme="dark"] .btn-primary:hover {
  background: #e4e4e7;
}

.btn-ghost {
  background: transparent;
  color: var(--text-secondary);
  border: 1px solid var(--border);
}

.btn-ghost:hover {
  background: var(--bg-subtle);
  color: var(--text-primary);
  border-color: var(--text-tertiary);
}

/* ============================================================
   ABOUT
   ============================================================ */
.about-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: start;
}

.about-text p {
  color: var(--text-secondary);
  line-height: 1.75;
  margin-bottom: 1rem;
}

.about-text strong {
  color: var(--text-primary);
  font-weight: 600;
}

.expertise-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.expertise-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.expertise-item:hover {
  border-color: var(--text-tertiary);
}

.expertise-icon {
  width: 32px;
  height: 32px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}

.expertise-icon svg {
  width: 20px;
  height: 20px;
}

.expertise-title {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.125rem;
}

.expertise-desc {
  font-size: 0.75rem;
  color: var(--text-tertiary);
  line-height: 1.5;
}

.about-details {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--border-subtle);
}

.detail-row:last-child {
  border-bottom: none;
}

.detail-label {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-tertiary);
}

.detail-value {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-primary);
  text-align: right;
}

.detail-value a {
  color: var(--accent);
}

.detail-value a:hover {
  text-decoration: underline;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--success);
}

.status-badge::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--success);
}

.about-actions {
  margin-top: 1.25rem;
}

/* ============================================================
   SKILLS
   ============================================================ */
.skills-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.skill-item {
  background: var(--bg-surface);
  padding: 1.25rem;
  transition: background var(--transition);
}

.skill-item:hover {
  background: var(--bg-subtle);
}

.skill-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.skill-name {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
}

.skill-level {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--text-tertiary);
}

.skill-bar {
  height: 3px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
}

.skill-bar-fill {
  height: 100%;
  background: var(--text-primary);
  border-radius: 2px;
  width: 0;
  transition: width 1s var(--ease);
}

.skill-category {
  font-size: 0.6875rem;
  color: var(--text-tertiary);
  margin-top: 0.5rem;
}

/* ============================================================
   EXPERIENCE
   ============================================================ */
.experience-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.experience-item {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 2rem;
  padding: 2rem 0;
  border-bottom: 1px solid var(--border);
  opacity: 0;
  transform: translateY(12px);
  transition: all 0.5s var(--ease);
}

.experience-item.visible {
  opacity: 1;
  transform: translateY(0);
}

.experience-item:first-child {
  border-top: 1px solid var(--border);
}

.experience-period {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-tertiary);
  padding-top: 0.125rem;
}

.experience-content h3 {
  font-family: var(--font-heading);
  font-size: 1.0625rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.125rem;
}

.experience-company {
  font-size: 0.875rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.experience-list ul {
  list-style: none;
}

.experience-list li {
  position: relative;
  padding-left: 1rem;
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 0.375rem;
}

.experience-list li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--text-tertiary);
}

/* ============================================================
   CERTIFICATIONS
   ============================================================ */
.certs-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
}

.cert-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem 1.25rem;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: all var(--transition);
}

.cert-item:hover {
  border-color: var(--text-tertiary);
}

.cert-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}

.cert-icon svg {
  width: 20px;
  height: 20px;
}

.cert-info {
  flex: 1;
  min-width: 0;
}

.cert-title {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.125rem;
}

.cert-meta {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.cert-badge {
  flex-shrink: 0;
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-tertiary);
  background: var(--bg-subtle);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}

/* ============================================================
   PORTFOLIO
   ============================================================ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

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

.project-card:hover {
  border-color: var(--text-tertiary);
  box-shadow: var(--shadow-sm);
}

.project-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 0.75rem;
}

.project-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
}

.project-icon svg {
  width: 20px;
  height: 20px;
}

.project-category {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-tertiary);
}

.project-title {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
}

.project-desc {
  font-size: 0.8125rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-bottom: 1rem;
  flex: 1;
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
  margin-bottom: 1rem;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--text-tertiary);
  background: var(--bg-subtle);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}

.project-result {
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-subtle);
}

/* ============================================================
   CONTACT
   ============================================================ */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: start;
}

.contact-intro {
  color: var(--text-secondary);
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.contact-channels {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.contact-channel {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  transition: all var(--transition);
}

.contact-channel:hover {
  background: var(--bg-subtle);
}

.channel-icon {
  width: 36px;
  height: 36px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-tertiary);
}

.channel-icon svg {
  width: 18px;
  height: 18px;
}

.channel-info {
  flex: 1;
}

.channel-label {
  font-size: 0.6875rem;
  font-weight: 500;
  color: var(--text-tertiary);
  margin-bottom: 0.0625rem;
}

.channel-value {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-primary);
}

.channel-value a {
  color: var(--text-primary);
}

.channel-value a:hover {
  color: var(--accent);
}

/* Contact Form */
.contact-form {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
}

.form-group {
  margin-bottom: 1rem;
}

.form-label {
  display: block;
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 0.375rem;
}

.form-input,
.form-textarea {
  width: 100%;
  background: var(--bg-page);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.625rem 0.875rem;
  font-size: 0.875rem;
  color: var(--text-primary);
  transition: border-color var(--transition);
  outline: none;
  resize: vertical;
}

.form-input::placeholder,
.form-textarea::placeholder {
  color: var(--text-tertiary);
}

.form-input:focus,
.form-textarea:focus {
  border-color: var(--text-primary);
}

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

.form-error {
  font-size: 0.6875rem;
  color: var(--error);
  margin-top: 0.25rem;
  display: none;
}

.form-error.visible {
  display: block;
}

.form-textarea {
  min-height: 100px;
}

.submit-btn {
  width: 100%;
  padding: 0.625rem;
  background: var(--text-primary);
  color: var(--text-inverse);
  border: none;
  border-radius: var(--radius);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  margin-top: 0.25rem;
}

.submit-btn:hover {
  background: var(--text-secondary);
  transform: translateY(-1px);
}

[data-theme="dark"] .submit-btn {
  background: #fff;
  color: #000;
}

[data-theme="dark"] .submit-btn:hover {
  background: #e4e4e7;
}

.submit-btn.success {
  background: var(--success);
  color: #fff;
}

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

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--section-x);
}

.footer-copy {
  font-size: 0.75rem;
  color: var(--text-tertiary);
}

.footer-links {
  display: flex;
  gap: 1rem;
}

.footer-links a {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius);
  color: var(--text-tertiary);
  transition: all var(--transition);
}

.footer-links a:hover {
  color: var(--text-primary);
  background: var(--bg-subtle);
}

.footer-links a svg {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
}