@import url('./design-system.css');

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}

main {
  flex: 1;
}

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

img {
  max-width: 100%;
}

/* ========== ANIMATIONS ========== */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(20px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* ========== NAV ========== */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  animation: fadeIn 0.6s ease;
}

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

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--color-text);
  transition: opacity 0.2s;
}

.nav-logo:hover {
  opacity: 0.6;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 400;
  color: var(--color-text-secondary);
  transition: color 0.2s;
  letter-spacing: 0.01em;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--color-border);
  border-radius: 50%;
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1rem;
  color: var(--color-text-secondary);
  transition: color 0.2s, border-color 0.2s;
}

.theme-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-text);
}

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

/* ========== BUTTONS ========== */
.btn {
  display: inline-block;
  padding: 12px 28px;
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  letter-spacing: 0.01em;
  border-radius: 6px;
  transition: all 0.25s ease;
  cursor: pointer;
}

.btn-primary {
  background-color: var(--color-accent);
  color: var(--color-bg);
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-1px);
}

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

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

/* ========== HERO ========== */
.hero {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-md) var(--spacing-lg);
  animation: fadeUp 0.8s ease;
}

.hero-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--spacing-lg);
}

.hero-text {
  flex: 1;
}

.hero-image {
  flex-shrink: 0;
}

.hero-avatar {
  width: 180px;
  height: 180px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-border-light);
  display: block;
}

.hero-label {
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 5vw, 3.2rem);
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.hero-sub {
  font-size: 1.1rem;
  line-height: 1.75;
  color: var(--color-text-secondary);
  max-width: 580px;
  margin-bottom: var(--spacing-sm);
}

.hero-currently {
  font-size: 0.95rem;
  font-style: italic;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
  opacity: 0.8;
}

.hero-ctas {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

/* ========== SECTION SHARED ========== */
.sp-section {
  border-top: 1px solid var(--color-border-light);
}

.sp-section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-md);
}

.sp-section-inner h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.2rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-xs);
}

.section-desc {
  font-size: 1rem;
  color: var(--color-text-secondary);
  max-width: 520px;
  margin-bottom: var(--spacing-lg);
}

/* ========== ABOUT ========== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
  border-top: 1px solid var(--color-border);
  padding-top: var(--spacing-lg);
  margin-top: var(--spacing-md);
}

.about-col h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 400;
  margin-bottom: var(--spacing-sm);
}

.about-col p {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  line-height: 1.75;
}

/* ========== PORTFOLIO GRID ========== */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
}

.project-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border-light);
  border-radius: 10px;
  overflow: hidden;
  cursor: pointer;
  transition: all 0.3s ease;
  animation: fadeUp 0.8s ease both;
}

.project-card:nth-child(1) { animation-delay: 0.1s; }
.project-card:nth-child(2) { animation-delay: 0.2s; }
.project-card:nth-child(3) { animation-delay: 0.3s; }

.project-card:hover {
  border-color: var(--color-border);
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.06);
  transform: translateY(-2px);
}

.project-screenshot {
  width: 100%;
  background: var(--color-tag-bg);
  border-bottom: 1px solid var(--color-border-light);
  overflow: hidden;
}

.project-screenshot img {
  width: 100%;
  height: 200px;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.logo-thumb {
  background: #EBEBEB;
}

.logo-thumb img {
  object-fit: cover;
  padding: 0;
}

.project-card:hover .project-screenshot img {
  transform: scale(1.02);
}

.project-content {
  padding: var(--spacing-md) var(--spacing-md) var(--spacing-md);
}

.project-content h2 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 400;
  margin-bottom: var(--spacing-xs);
  margin-top: var(--spacing-xs);
}

.project-content .project-desc {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-sm);
  line-height: 1.65;
}

.project-tags {
  display: flex;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
}

.tag {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 4px 12px;
  background: var(--color-tag-bg);
  border-radius: 100px;
  color: var(--color-text-secondary);
  letter-spacing: 0.02em;
}

.tag-live {
  background: #E6F4EA;
  color: #2D7A4F;
}

.tag-wip {
  background: #FEF3E2;
  color: #9A6000;
}

.tag-prototype {
  background: #E8F0FE;
  color: #1A56DB;
}

.project-metrics {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-sm) 0;
  margin-top: var(--spacing-sm);
  border-top: 1px solid var(--color-border-light);
}

.metric {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.metric-value {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--color-text);
  line-height: 1.2;
}

.card-hint {
  display: block;
  margin-top: var(--spacing-sm);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.2s ease, transform 0.2s ease;
}

.project-card:hover .card-hint {
  opacity: 1;
  transform: translateX(0);
}

.metric-label {
  font-size: 0.7rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-secondary);
}

/* ========== MODAL ========== */
.modal-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  z-index: 200;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-md);
}

.modal-overlay.is-open {
  display: flex;
  animation: fadeIn 0.2s ease;
}

.modal-content {
  background: var(--color-surface);
  border-radius: 12px;
  padding: var(--spacing-lg);
  max-width: 580px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  position: relative;
  animation: fadeUp 0.25s ease;
}

.modal-close {
  position: fixed;
  top: var(--spacing-md);
  right: var(--spacing-md);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 50%;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
  color: var(--color-text-secondary);
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  transition: color 0.2s, box-shadow 0.2s;
  z-index: 201;
}

.modal-close:hover {
  color: var(--color-text);
}

.modal-image-wrap {
  margin: calc(-1 * var(--spacing-lg)) calc(-1 * var(--spacing-lg)) var(--spacing-md);
  border-radius: 12px 12px 0 0;
  overflow: hidden;
  background: var(--color-tag-bg);
  border-bottom: 1px solid var(--color-border-light);
}

.modal-image-wrap img {
  width: 100%;
  max-height: 280px;
  object-fit: cover;
  display: block;
}

.modal-title {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 400;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-md);
  padding-right: var(--spacing-lg);
}

.modal-header {
  margin-bottom: var(--spacing-md);
}

.modal-header-logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.modal-header-logo .modal-title {
  margin-bottom: 0;
  flex-shrink: 0;
}

.modal-logo {
  height: 100px;
  width: auto;
  display: block;
}

.modal-title-text {
  font-family: var(--font-display);
  font-size: 1.6rem;
  white-space: nowrap;
}

.modal-header-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  align-items: flex-start;
}

.modal-header-desc {
  font-size: 0.9rem;
  line-height: 1.65;
  color: var(--color-text-secondary);
}

.modal-stack {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-top: 4px;
}

.tag-stack {
  background: var(--color-border-light);
  color: var(--color-text-secondary);
  font-size: 0.7rem;
  white-space: nowrap;
}

.modal-section {
  margin-bottom: var(--spacing-md);
}

.modal-section h4 {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-text-secondary);
  margin-bottom: 6px;
}

.modal-section p {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--color-text);
}

.modal-links {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
  border-top: 1px solid var(--color-border-light);
  padding-top: var(--spacing-md);
}

.modal-links-primary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--spacing-sm);
}

.modal-link {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  padding-bottom: 2px;
  transition: border-color 0.2s;
}

.modal-link:hover {
  border-color: var(--color-text);
}

.modal-link-live {
  background-color: var(--color-accent);
  color: var(--color-bg);
  padding: 8px 20px;
  border-radius: 6px;
  border: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: background-color 0.2s, transform 0.2s;
}

.modal-link-live:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-1px);
}

.modal-link-github {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

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

.blog-card {
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid var(--color-border-light);
  transition: padding-left 0.2s ease;
}

.blog-card:first-child {
  border-top: 1px solid var(--color-border-light);
}

.blog-card:hover {
  padding-left: var(--spacing-sm);
}

.blog-card a {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.blog-card-left {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
  width: 120px;
}

.blog-thumb {
  width: 120px;
  height: 80px;
  border-radius: 6px;
  overflow: hidden;
  background: var(--color-tag-bg);
}

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

.blog-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.blog-tags .tag {
  font-size: 0.65rem;
  padding: 2px 8px;
  white-space: nowrap;
}

.blog-card-body {
  flex: 1;
  min-width: 0;
}

.blog-meta {
  display: flex;
  gap: 6px;
  align-items: center;
  flex-wrap: wrap;
  margin-bottom: 6px;
}

.blog-date {
  font-size: 0.8rem;
  color: var(--color-text-secondary);
  font-weight: 300;
}

.blog-card h2 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 400;
  margin-bottom: 6px;
  line-height: 1.4;
}

.blog-card .blog-excerpt {
  font-size: 0.875rem;
  color: var(--color-text-secondary);
  line-height: 1.65;
}

.read-more {
  display: inline-block;
  margin-top: var(--spacing-xs);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--color-text);
  letter-spacing: 0.02em;
}

.blog-loading {
  font-size: 0.9rem;
  color: var(--color-text-secondary);
  padding: var(--spacing-md) 0;
}

.blog-loading a {
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}

/* ========== CONTACT ========== */
.contact-intro {
  font-size: 1.05rem;
  color: var(--color-text-secondary);
  max-width: 480px;
  margin-bottom: var(--spacing-md);
  line-height: 1.7;
  margin-top: var(--spacing-sm);
}

.contact-row {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.contact-link {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
  padding: 10px 0 2px;
  display: inline-block;
  transition: border-color 0.2s;
}

.contact-link:hover {
  border-color: var(--color-text);
}

.contact-dot {
  color: var(--color-border);
  user-select: none;
}

/* ========== FOOTER ========== */
footer {
  border-top: 1px solid var(--color-border-light);
  margin-top: auto;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--color-text-secondary);
}

.footer-links {
  display: flex;
  gap: var(--spacing-md);
}

.footer-links a {
  color: var(--color-text-secondary);
  font-size: 0.8rem;
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--color-text);
}

/* ========== RESPONSIVE ========== */
@media (max-width: 640px) {
  .nav-links {
    gap: var(--spacing-xs);
  }

  .nav-links a {
    font-size: 0.8rem;
  }

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

  .project-screenshot img {
    height: 160px;
  }

  .project-metrics {
    gap: var(--spacing-md);
  }

  .about-grid {
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
  }

  .hero {
    padding-top: var(--spacing-lg);
  }

  .hero-inner {
    flex-direction: column-reverse;
    text-align: center;
  }

  .hero-avatar {
    width: 120px;
    height: 120px;
  }

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

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

  .blog-thumb {
    width: 100px;
    height: 68px;
  }

  .contact-row {
    flex-wrap: wrap;
    gap: var(--spacing-xs);
  }

  .footer-inner {
    flex-direction: column;
    gap: var(--spacing-xs);
  }

  .modal-content {
    padding: var(--spacing-md);
    border-radius: 8px;
  }

  .modal-links-primary {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }

  .modal-header-logo {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--spacing-sm);
  }

  .modal-header-info {
    align-items: flex-start;
    width: 100%;
  }

  .modal-stack {
    display: flex;
    flex-wrap: wrap;
  }

  .modal-image-wrap {
    margin: calc(-1 * var(--spacing-md)) calc(-1 * var(--spacing-md)) var(--spacing-md);
  }
}

@media (max-width: 375px) {
  .nav-links a {
    font-size: 0.75rem;
  }

  .nav-links {
    gap: 6px;
  }
}

/* ========== DARK MODE ========== */
[data-theme="dark"] {
  --color-bg:             #1A1A1A;
  --color-surface:        #242424;
  --color-text:           #E8E6E1;
  --color-text-secondary: #9A9A9A;
  --color-accent:         #E8E6E1;
  --color-accent-hover:   #FFFFFF;
  --color-border:         #333333;
  --color-border-light:   #2A2A2A;
  --color-tag-bg:         #2E2E2E;
  --color-highlight:      #333333;
}

[data-theme="dark"] .tag-live {
  background: #1A3D2A;
  color: #6FCF97;
}

[data-theme="dark"] .tag-wip {
  background: #3D2E0A;
  color: #E0A830;
}

[data-theme="dark"] .tag-prototype {
  background: #1A2744;
  color: #6FA3F7;
}

[data-theme="dark"] .logo-thumb {
  background: #FFFFFF;
}

[data-theme="dark"] .logo-thumb img {
  filter: none;
}

[data-theme="dark"] .modal-logo {
  filter: invert(1) brightness(2);
}

[data-theme="dark"] .tag-stack {
  background: #3A3A3A;
  color: #D0D0D0;
  border: 1px solid #4A4A4A;
}

[data-theme="dark"] .modal-overlay {
  background: rgba(0, 0, 0, 0.65);
}

[data-theme="dark"] .modal-content {
  scrollbar-color: #4A4A4A #2A2A2A;
  scrollbar-width: thin;
}

[data-theme="dark"] .modal-content::-webkit-scrollbar {
  width: 6px;
}

[data-theme="dark"] .modal-content::-webkit-scrollbar-track {
  background: #2A2A2A;
  border-radius: 3px;
}

[data-theme="dark"] .modal-content::-webkit-scrollbar-thumb {
  background: #4A4A4A;
  border-radius: 3px;
}

[data-theme="dark"] .modal-close {
  background: var(--color-surface);
  border-color: var(--color-border);
}