:root {
  --font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', 'PingFang SC',
    'Microsoft YaHei', sans-serif;
  --color-bg: #f8fafc;
  --color-bg-alt: #ffffff;
  --color-surface: #ffffff;
  --color-text: #0f172a;
  --color-text-secondary: #475569;
  --color-accent: #2563eb;
  --color-accent-hover: #1d4ed8;
  --color-accent-light: rgba(37, 99, 235, 0.1);
  --color-border: #e2e8f0;
  --color-nav-bg: rgba(248, 250, 252, 0.8);
  --shadow-card: 0 2px 8px rgba(15, 23, 42, 0.06),
    0 8px 24px rgba(15, 23, 42, 0.08);
  --shadow-card-hover: 0 8px 16px rgba(15, 23, 42, 0.1),
    0 16px 40px rgba(15, 23, 42, 0.12);
  --shadow-glow: 0 0 40px rgba(37, 99, 235, 0.15);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --transition-theme: background-color 0.3s ease, color 0.3s ease,
    border-color 0.3s ease;
}

:root[data-theme='dark'] {
  --color-bg: #0b0f1a;
  --color-bg-alt: #111827;
  --color-surface: #1e293b;
  --color-text: #f8fafc;
  --color-text-secondary: #94a3b8;
  --color-accent: #60a5fa;
  --color-accent-hover: #93c5fd;
  --color-accent-light: rgba(96, 165, 250, 0.15);
  --color-border: #1e293b;
  --color-nav-bg: rgba(11, 15, 26, 0.85);
  --shadow-card: 0 2px 8px rgba(0, 0, 0, 0.4),
    0 8px 24px rgba(0, 0, 0, 0.3);
  --shadow-card-hover: 0 8px 16px rgba(0, 0, 0, 0.5),
    0 16px 40px rgba(0, 0, 0, 0.4);
  --shadow-glow: 0 0 60px rgba(129, 140, 248, 0.2);
}

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

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  background-color: var(--color-bg);
  color: var(--color-text);
  transition: var(--transition-theme);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}

/* ---------- Navbar ---------- */

.navbar {
  display: none;
  position: sticky;
  top: 0;
  z-index: 50;
  background-color: var(--color-nav-bg);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition-theme);
  box-shadow: 0 1px 0 rgba(0, 0, 0, 0.05);
}

.navbar__inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
  height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar__brand {
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  text-decoration: none;
  letter-spacing: -0.02em;
}

.navbar__links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.navbar__link {
  color: var(--color-text-secondary);
  text-decoration: none;
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

.navbar__link:hover {
  color: var(--color-accent);
}

.navbar__actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.navbar__theme-btn,
.navbar__burger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  transition: all 0.25s ease;
}

.navbar__theme-btn:hover,
.navbar__burger:hover {
  color: var(--color-accent);
  border-color: var(--color-accent);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.15);
}

.navbar__theme-btn .icon-moon {
  display: inline;
}

.navbar__theme-btn .icon-sun {
  display: none;
}

:root[data-theme='dark'] .navbar__theme-btn .icon-moon {
  display: none;
}

:root[data-theme='dark'] .navbar__theme-btn .icon-sun {
  display: inline;
}

.navbar__burger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  border: none;
}

.navbar__burger span {
  display: block;
  width: 18px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: var(--transition-theme);
}

.navbar__mobile {
  display: none;
  list-style: none;
  padding: 8px 20px 16px;
  border-top: 1px solid var(--color-border);
  background-color: var(--color-nav-bg);
}

.navbar__mobile-link {
  display: block;
  padding: 12px 0;
  color: var(--color-text);
  text-decoration: none;
  border-bottom: 1px solid var(--color-border);
}

.navbar__mobile-link:last-child {
  border-bottom: none;
}

/* ---------- Hero ---------- */

.hero {
  padding: 48px 20px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-accent-light) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
}

.hero__inner {
  max-width: 720px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero__avatar {
  width: 160px;
  height: 160px;
  border-radius: 50%;
  object-fit: cover;
  border: 4px solid var(--color-accent);
  box-shadow: var(--shadow-glow), var(--shadow-card-hover);
  margin-bottom: 16px;
  animation: hero-enter 0.8s ease-out both;
}

.hero__name {
  font-size: 2.75rem;
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 8px;
  background: linear-gradient(135deg, var(--color-text) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: hero-enter 0.8s ease-out 0.1s both;
}

.hero__tagline {
  margin-top: 0;
  font-size: 1.15rem;
  color: var(--color-accent);
  font-weight: 600;
  animation: hero-enter 0.8s ease-out 0.2s both;
}

.hero__bio {
  margin-top: 10px;
  font-size: 1rem;
  color: var(--color-text-secondary);
  line-height: 1.6;
  max-width: 560px;
  margin-left: auto;
  margin-right: auto;
  animation: hero-enter 0.8s ease-out 0.3s both;
}

.hero__cta {
  margin-top: 40px;
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  animation: hero-enter 0.8s ease-out 0.4s both;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 32px;
  border-radius: var(--radius-md);
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  cursor: pointer;
  border: none;
  gap: 8px;
}

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

.btn--primary {
  background: linear-gradient(135deg, var(--color-accent) 0%, var(--color-accent-hover) 100%);
  color: #ffffff;
  box-shadow: 0 4px 16px rgba(37, 99, 235, 0.3);
}

.btn--primary:hover {
  box-shadow: 0 8px 24px rgba(37, 99, 235, 0.4);
  transform: translateY(-3px);
}

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

.btn--ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background-color: var(--color-accent-light);
}

/* ---------- Sections ---------- */

.section {
  padding: 96px 20px;
}

.section:nth-of-type(even) {
  background: linear-gradient(180deg, var(--color-bg) 0%, var(--color-bg-alt) 100%);
}

.section__inner {
  max-width: 1080px;
  margin: 0 auto;
}

.section__title {
  font-size: 2rem;
  font-weight: 800;
  text-align: center;
  margin-bottom: 48px;
  position: relative;
  letter-spacing: -0.02em;
}

.section__title::after {
  content: '';
  display: block;
  width: 64px;
  height: 4px;
  border-radius: 2px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-hover));
  margin: 16px auto 0;
}

/* ---------- Skills ---------- */

.skills {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.skill-group {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: var(--transition-theme), transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-card);
}

.skill-group:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-accent);
}

.skill-group__title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 24px;
  color: var(--color-accent);
  display: flex;
  align-items: center;
  gap: 8px;
}

.skill-group__title::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-accent);
}

.skill-group__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.skill-group__label {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  margin-bottom: 6px;
}

.skill-group__level {
  color: var(--color-text-secondary);
  font-size: 0.85rem;
}

.skill-group__bar {
  height: 10px;
  border-radius: 5px;
  background-color: var(--color-border);
  overflow: hidden;
}

.skill-group__fill {
  display: block;
  height: 100%;
  border-radius: 5px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-hover));
  transition: width 0.9s cubic-bezier(0.22, 1, 0.36, 1);
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

/* ---------- Projects ---------- */

.projects {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.project-card {
  display: flex;
  flex-direction: column;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition-theme), transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: var(--shadow-card);
}

.project-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-card-hover), var(--shadow-glow);
  border-color: var(--color-accent);
}

.project-card__body {
  padding: 28px;
  flex: 1;
}

.project-card__title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.01em;
}

.project-card__desc {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  margin-bottom: 20px;
  line-height: 1.6;
}

.project-card__tech {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.project-card__tech-tag {
  font-size: 0.75rem;
  padding: 5px 12px;
  border-radius: 999px;
  background: var(--color-accent-light);
  border: 1px solid rgba(37, 99, 235, 0.2);
  color: var(--color-accent);
  font-weight: 500;
}

.project-card__footer {
  padding: 16px 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: flex-end;
}

.project-card__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-accent);
  font-size: 0.9rem;
  font-weight: 600;
  text-decoration: none;
  transition: gap 0.2s ease;
}

.project-card__btn {
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.project-card__btn:hover {
  gap: 10px;
}

.project-card__link:hover {
  gap: 10px;
}

/* ---------- Contact ---------- */

.contact {
  max-width: 720px;
  margin: 0 auto;
  text-align: center;
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.contact__intro {
  color: var(--color-text-secondary);
  margin-bottom: 32px;
}

.contact__links {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.contact__card {
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 24px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  text-decoration: none;
  transition: var(--transition-theme), transform 0.3s cubic-bezier(0.4, 0, 0.2, 1),
    box-shadow 0.3s cubic-bezier(0.4, 0, 0.2, 1), border-color 0.3s ease;
  box-shadow: var(--shadow-card);
}

.contact__card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-card-hover), var(--shadow-glow);
  border-color: var(--color-accent);
}

.contact__card-label {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.contact__card-value {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--color-text);
  word-break: break-all;
}

/* ---------- Footer ---------- */

.footer {
  border-top: 1px solid var(--color-border);
  background-color: var(--color-bg-alt);
  transition: var(--transition-theme);
}

.footer__inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 24px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}

.footer__text {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.footer__links {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer__link {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
  text-decoration: none;
}

.footer__link:hover {
  color: var(--color-accent);
  text-decoration: underline;
}

.footer__back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.85rem;
  color: var(--color-accent);
  text-decoration: none;
}

.footer__back:hover {
  text-decoration: underline;
}

/* ---------- Blog ---------- */

.blog {
  min-height: 60vh;
}

.blog__list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
  max-width: 880px;
  margin: 0 auto;
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

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

.blog-card {
  display: block;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  text-decoration: none;
  color: inherit;
  transition: var(--transition-theme), transform 0.25s ease,
    box-shadow 0.25s ease, border-color 0.25s ease;
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
  border-color: var(--color-accent);
}

.blog-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 12px;
}

.blog-card__date {
  font-size: 0.85rem;
  color: var(--color-text-secondary);
}

.blog-card__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.blog-card__tag {
  font-size: 0.75rem;
  padding: 3px 10px;
  border-radius: 999px;
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
}

.blog-card__title {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--color-text);
  transition: color 0.2s ease;
}

.blog-card:hover .blog-card__title {
  color: var(--color-accent);
}

.blog-card__excerpt {
  font-size: 0.92rem;
  color: var(--color-text-secondary);
  margin-bottom: 16px;
}

.blog-card__read-more {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-accent);
  font-size: 0.9rem;
  font-weight: 600;
  transition: gap 0.2s ease;
}

.blog-card:hover .blog-card__read-more {
  gap: 10px;
}

/* ---------- Blog Post ---------- */

.blog-post__back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  text-decoration: none;
  margin-bottom: 24px;
  transition: color 0.2s ease;
}

.blog-post__back:hover {
  color: var(--color-accent);
}

.blog-post__header {
  max-width: 720px;
  margin: 0 auto 32px;
  text-align: center;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.blog-post__header--visible {
  opacity: 1;
  transform: translateY(0);
}

.blog-post__title {
  font-size: 2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.blog-post__meta {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  flex-wrap: wrap;
}

.blog-post__meta time {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
}

.blog-post__content {
  max-width: 720px;
  margin: 0 auto;
  font-size: 1.02rem;
  color: var(--color-text);
}

.blog-post__content h2,
.blog-post__content h3,
.blog-post__content h4 {
  margin-top: 40px;
  margin-bottom: 16px;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.blog-post__content h2 {
  font-size: 1.5rem;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.blog-post__content h3 {
  font-size: 1.25rem;
}

.blog-post__content h4 {
  font-size: 1.1rem;
}

.blog-post__content p {
  margin-bottom: 20px;
  line-height: 1.8;
}

.blog-post__content ul,
.blog-post__content ol {
  margin: 0 0 20px 24px;
  line-height: 1.8;
}

.blog-post__content li {
  margin-bottom: 6px;
}

.blog-post__content blockquote {
  border-left: 4px solid var(--color-accent);
  padding: 12px 20px;
  margin: 0 0 20px;
  background-color: var(--color-surface);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  color: var(--color-text-secondary);
}

.blog-post__content pre {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  overflow-x: auto;
  margin: 0 0 20px;
  font-size: 0.9rem;
  line-height: 1.6;
}

.blog-post__content code {
  font-family: 'JetBrains Mono', 'Fira Code', ui-monospace, monospace;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 2px 6px;
  font-size: 0.9em;
}

.blog-post__content pre code {
  background-color: transparent;
  border: none;
  padding: 0;
  font-size: 0.9rem;
}

.blog-post__not-found {
  max-width: 520px;
  margin: 0 auto;
  text-align: center;
}

.blog-post__not-found p {
  color: var(--color-text-secondary);
  margin-bottom: 24px;
}

/* ---------- Modal ---------- */

.modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.modal__backdrop {
  position: absolute;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.55);
  animation: modal-fade-in 0.2s ease both;
}

.modal__panel {
  position: relative;
  width: 100%;
  max-width: 560px;
  max-height: 80vh;
  overflow-y: auto;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  box-shadow: var(--shadow-card-hover);
  animation: modal-panel-in 0.25s cubic-bezier(0.22, 1, 0.36, 1) both;
  transition: var(--transition-theme);
}

.modal__close {
  position: absolute;
  top: 16px;
  right: 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: var(--color-bg);
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: var(--transition-theme), color 0.2s ease;
}

.modal__close:hover {
  color: var(--color-accent);
}

.modal__title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 12px;
  padding-right: 40px;
}

.modal__desc {
  color: var(--color-text-secondary);
  margin-bottom: 20px;
  line-height: 1.7;
}

.modal__highlights {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-bottom: 24px;
}

.modal__highlights li {
  position: relative;
  padding-left: 24px;
  font-size: 0.95rem;
  line-height: 1.6;
}

.modal__highlights li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 9px;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-accent);
}

.modal__footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border);
}

.modal__link {
  font-size: 0.9rem;
  padding: 10px 22px;
}

@keyframes modal-fade-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes modal-panel-in {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ---------- Animations ---------- */

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

/* ---------- Responsive ---------- */

@media (max-width: 900px) {
  .skills,
  .projects {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .navbar__links {
    display: none;
  }

  .navbar__burger {
    display: flex;
  }

  .navbar__mobile {
    display: block;
  }

  .hero {
    padding: 40px 20px 32px;
  }

  .hero__name {
    font-size: 2.25rem;
  }

  .hero__avatar {
    width: 140px;
    height: 140px;
  }

  .section {
    padding: 64px 20px;
  }

  .section__title {
    font-size: 1.75rem;
  }

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

  .blog-post__title {
    font-size: 1.5rem;
  }
}

@media (max-width: 560px) {
  .skills,
  .projects,
  .contact__links {
    grid-template-columns: 1fr;
  }

  .hero {
    padding: 32px 16px 24px;
  }

  .hero__name {
    font-size: 1.75rem;
  }

  .hero__avatar {
    width: 140px;
    height: 140px;
  }

  .section {
    padding: 48px 16px;
  }

  .section__title {
    font-size: 1.5rem;
  }

  .btn {
    padding: 12px 24px;
    font-size: 0.9rem;
  }

  .hero__cta {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    text-align: center;
  }
}

/* ---------- Settings Modal ---------- */

.settings-modal {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
}

.settings-modal__backdrop {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
}

.settings-modal__panel {
  position: relative;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card-hover);
  max-width: 440px;
  width: 100%;
  max-height: 90vh;
  overflow: auto;
  animation: modal-panel-in 0.25s ease;
}

.settings-modal__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 20px 24px;
  border-bottom: 1px solid var(--color-border);
}

.settings-modal__title {
  font-size: 1.25rem;
  font-weight: 700;
}

.settings-modal__close {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background: var(--color-bg);
  color: var(--color-text);
  cursor: pointer;
  transition: all 0.2s ease;
}

.settings-modal__close:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

.settings-modal__content {
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.setting-group {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.setting-group__label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--color-text);
}

.setting-group__hint {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
}

.color-picker-group {
  display: flex;
  align-items: center;
  gap: 12px;
}

.color-picker {
  width: 48px;
  height: 48px;
  padding: 2px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  background: var(--color-bg);
}

.color-picker::-webkit-color-swatch-wrapper {
  padding: 2px;
}

.color-picker::-webkit-color-swatch {
  border: none;
  border-radius: 4px;
}

.color-picker__preview {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.color-picker__hex {
  font-family: monospace;
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  padding: 8px 12px;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.preset-colors {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.preset-btn {
  width: 40px;
  height: 40px;
  border: 2px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: transform 0.2s ease, border-color 0.2s ease;
}

.preset-btn:hover {
  transform: scale(1.1);
  border-color: var(--color-text);
}

.btn--block {
  width: 100%;
}

@keyframes modal-panel-in {
  from {
    opacity: 0;
    transform: translateY(16px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* ---------- Dual Panel (Clock + History) ---------- */

.dual-panel {
  padding: 0 20px 40px;
  max-width: 1080px;
  margin: 0 auto;
}

.dual-panel__inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.panel-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.panel-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.panel-card__header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border);
  font-weight: 600;
  color: var(--color-accent);
}

.panel-card__header svg {
  flex-shrink: 0;
}

.panel-card__body {
  padding: 24px 20px;
}

/* Clock */
.clock-display {
  text-align: center;
}

.clock-time {
  display: block;
  font-size: 2.5rem;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.02em;
  color: var(--color-text);
  line-height: 1.2;
}

.clock-date {
  display: block;
  margin-top: 8px;
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

/* History */
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 200px;
  overflow-y: auto;
}

  display: flex;
  gap: 12px;
  padding: 12px;
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-accent);
}

  flex-shrink: 0;
  font-weight: 700;
  color: var(--color-accent);
  font-size: 0.9rem;
  min-width: 60px;
}

  font-size: 0.88rem;
  color: var(--color-text);
  line-height: 1.5;
}

  text-align: center;
  color: var(--color-text-secondary);
  font-size: 0.9rem;
  padding: 20px 0;
}

/* ---------- Clock Section ---------- */

.clock-section {
  max-width: 480px;
  margin: 0 auto 16px;
}

/* ---------- Bottom Navigation ---------- */

.bottom-nav {
  display: flex;
  flex-direction: row;
  justify-content: center;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  max-width: 100%;
  margin: 0;
}

.bottom-nav__item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  transition: all 0.2s ease;
  border: 1px solid transparent;
  background: none;
  font-family: inherit;
  cursor: pointer;
}

.bottom-nav__item:hover {
  color: var(--color-accent);
  background: var(--color-accent-light);
  border-color: rgba(99, 102, 241, 0.2);
}

.bottom-nav__item svg {
  width: 20px;
  height: 20px;
}

.bottom-nav__item .icon-moon {
  display: inline;
}

.bottom-nav__item .icon-sun {
  display: none;
}

:root[data-theme='dark'] .bottom-nav__item .icon-moon {
  display: none;
}

:root[data-theme='dark'] .bottom-nav__item .icon-sun {
  display: inline;
}

.bottom-nav__item span {
  display: none;
}

/* ---------- Responsive ---------- */

@media (max-width: 768px) {
  .clock-time {
    font-size: 2rem;
  }

  .bottom-nav {
    padding: 12px 16px;
    gap: 10px;
  }
}

@media (max-width: 560px) {
  .bottom-nav__item {
    width: 40px;
    height: 40px;
  }

  .bottom-nav__item svg {
    width: 18px;
    height: 18px;
  }
}