/* ==========================================================================
   Project-feed Monochrome Brutalist Design System
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,100..800;1,100..800&display=swap');

:root {
  --bg-color: #ffffff;
  --text-color: #000000;
  --border-color: #000000;
  --hover-bg: #000000;
  --hover-text: #ffffff;
  --tag-bg: #f0f0f0;
  --tag-text: #000000;
  --card-bg: #ffffff;
  --accent-color: #777777;
  --font-family: 'JetBrains Mono', 'Cascadia Mono', monospace;
  --max-width: 1100px;
}

[data-theme="dark"] {
  --bg-color: #0d0d0d;
  --text-color: #ffffff;
  --border-color: #ffffff;
  --hover-bg: #ffffff;
  --hover-text: #0d0d0d;
  --tag-bg: #1c1c1c;
  --tag-text: #ffffff;
  --card-bg: #0d0d0d;
  --accent-color: #aaaaaa;
}

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

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  font-family: var(--font-family);
  line-height: 1.6;
  padding: 0;
  margin: 0;
  transition: background-color 0.2s ease, color 0.2s ease;
}

/* ==========================================================================
   Layout Structures
   ========================================================================== */

header {
  border-bottom: 3px solid var(--border-color);
  padding: 20px;
  position: sticky;
  top: 0;
  background-color: var(--bg-color);
  z-index: 100;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.header-container {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 15px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: var(--text-color);
}

.logo-icon {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-size: 20px;
  font-weight: 800;
  letter-spacing: -0.5px;
}

.logo-subtitle {
  font-size: 11px;
  color: var(--accent-color);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.nav-actions nav {
  display: flex;
  gap: 10px;
}

.nav-link, .theme-toggle, .user-menu-btn {
  color: var(--text-color);
  background-color: transparent;
  text-decoration: none;
  font-family: var(--font-family);
  font-weight: 700;
  font-size: 13px;
  padding: 0 12px;
  height: 36px;
  border: 2px solid var(--border-color);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  transition: all 0.15s ease;
  position: relative;
}

.nav-link:hover, .theme-toggle:hover, .user-menu-btn:hover {
  background-color: var(--hover-bg);
  color: var(--hover-text);
}

.nav-link.active, .theme-toggle.active {
  background-color: var(--border-color);
  color: var(--bg-color);
}

/* Dropdown */
.dropdown {
  position: relative;
  display: inline-block;
}

.dropdown-menu {
  display: none;
  position: absolute;
  top: calc(100% + 5px);
  right: 0;
  background-color: var(--bg-color);
  border: 2px solid var(--border-color);
  min-width: 150px;
  z-index: 1000;
  flex-direction: column;
}

/* 마우스가 버튼에서 메뉴로 넘어갈 때 틈새(gap)에서 hover가 풀리지 않도록 투명한 다리를 놓습니다. */
.dropdown-menu::before {
  content: "";
  position: absolute;
  top: -10px;
  left: 0;
  width: 100%;
  height: 10px;
  background: transparent;
}

.dropdown:hover .dropdown-menu {
  display: flex;
}

.dropdown-item {
  padding: 10px 15px;
  color: var(--text-color);
  text-decoration: none;
  font-size: 13px;
  font-weight: 700;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
  background: none;
  border-left: none;
  border-right: none;
  border-top: none;
  cursor: pointer;
  font-family: var(--font-family);
  width: 100%;
}

.dropdown-item:last-child {
  border-bottom: none;
}

.dropdown-item:hover {
  background-color: var(--hover-bg);
  color: var(--hover-text);
}

/* Container */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 30px 20px;
  min-height: calc(100vh - 180px);
}

/* ==========================================================================
   Split Layout (Sidebar & Main content)
   ========================================================================== */

.split-layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 30px;
}

@media (max-width: 800px) {
  .split-layout {
    grid-template-columns: 1fr;
  }
}

/* Sidebar Widgets */
.sidebar {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.widget {
  border: 2px solid var(--border-color);
  padding: 20px;
  background-color: var(--card-bg);
  transition: border-color 0.2s ease;
}

.widget-title {
  font-size: 14px;
  font-weight: 800;
  text-transform: uppercase;
  margin-bottom: 12px;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 6px;
}

/* Search bar */
.search-container {
  position: relative;
}

.search-input {
  width: 100%;
  padding: 10px 12px;
  font-family: var(--font-family);
  font-size: 14px;
  background-color: var(--bg-color);
  color: var(--text-color);
  border: 2px solid var(--border-color);
  outline: none;
  transition: all 0.15s ease;
}

.search-input:focus {
  background-color: var(--hover-bg);
  color: var(--hover-text);
}

.search-input:focus::placeholder {
  color: var(--accent-color);
}

/* Category Filter List */
.filter-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.filter-btn {
  text-align: left;
  background: none;
  border: 2px solid transparent;
  color: var(--text-color);
  padding: 8px 10px;
  font-family: var(--font-family);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.filter-btn:hover {
  background-color: var(--tag-bg);
  border-color: var(--border-color);
}

.filter-btn.active {
  border-color: var(--border-color);
  background-color: var(--hover-bg);
  color: var(--hover-text);
}

.filter-btn .count {
  font-size: 11px;
  border: 1px solid var(--border-color);
  padding: 1px 6px;
}

.filter-btn.active .count {
  border-color: var(--hover-text);
}

/* Category hierarchy */
.filter-btn-parent {
  font-weight: 800;
  font-size: 13px;
}

.filter-btn-child {
  padding-left: 22px;
  font-size: 12px;
  font-weight: 600;
  opacity: 0.8;
}

.filter-btn-child:hover {
  opacity: 1;
}

.filter-btn-child.active {
  opacity: 1;
}

/* Tag Cloud */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag-btn {
  background-color: var(--tag-bg);
  color: var(--tag-text);
  border: 1px solid var(--border-color);
  padding: 4px 8px;
  font-family: var(--font-family);
  font-size: 11px;
  cursor: pointer;
  transition: all 0.15s ease;
  text-decoration: none;
}

.tag-btn:hover {
  background-color: var(--hover-bg);
  color: var(--hover-text);
}

.tag-btn.active {
  background-color: var(--hover-bg);
  color: var(--hover-text);
  font-weight: 800;
}

/* ==========================================================================
   Project Feed / List
   ========================================================================== */

.feed-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 20px;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border-color);
  flex-wrap: wrap;
  gap: 10px;
}

.results-count {
  font-size: 13px;
  font-weight: 700;
}

.sort-select-wrapper {
  display: flex;
  align-items: center;
  gap: 8px;
}

.sort-label {
  font-size: 12px;
  font-weight: 700;
}

.sort-select {
  padding: 4px 8px;
  font-family: var(--font-family);
  font-size: 12px;
  background-color: var(--bg-color);
  color: var(--text-color);
  border: 2px solid var(--border-color);
  outline: none;
  cursor: pointer;
}

.sort-select:focus {
  background-color: var(--hover-bg);
  color: var(--hover-text);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 24px;
}

/* Project Card Component */
.project-card {
  border: 2px solid var(--border-color);
  background-color: var(--card-bg);
  transition: all 0.2s ease;
  position: relative;
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--text-color);
  overflow: hidden;
  height: 100%;
}

.project-card:hover {
  transform: translate(-4px, -4px);
  box-shadow: 4px 4px 0px var(--border-color);
}

.project-card-image-wrapper {
  height: 160px;
  width: 100%;
  border-bottom: 2px solid var(--border-color);
  overflow: hidden;
  position: relative;
  background-color: var(--tag-bg);
  display: flex;
  align-items: center;
  justify-content: center;
}

.project-card-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%);
  transition: filter 0.3s ease;
}

.project-card:hover .project-card-img {
  filter: grayscale(0%);
}

.project-card-placeholder {
  font-size: 28px;
  font-weight: 800;
  color: var(--border-color);
  opacity: 0.35;
  user-select: none;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
}

.project-card-body {
  padding: 16px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
  gap: 8px;
}

.project-card-title-row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 10px;
}

.project-card-title {
  font-size: 16px;
  font-weight: 800;
  margin-bottom: 0;
  color: var(--text-color);
  line-height: 1.3;
}

.project-card-category {
  font-size: 9px;
  font-weight: 800;
  border: 1px solid var(--border-color);
  padding: 1px 4px;
  text-transform: uppercase;
  white-space: nowrap;
}

.project-card-desc {
  font-size: 12px;
  color: var(--text-color);
  opacity: 0.85;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
  margin-bottom: 12px;
  line-height: 1.5;
}

.project-card-footer {
  border-top: 1px dashed var(--border-color);
  padding-top: 8px;
  margin-top: auto;
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 11px;
}

.project-card-meta-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 5px;
}

.project-card-author {
  font-weight: 700;
  color: var(--text-color);
  text-decoration: none;
}

.project-card-author:hover {
  text-decoration: underline;
}

.project-card-tags {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
  color: var(--accent-color);
  font-size: 10px;
}

.card-stats {
  display: flex;
  gap: 10px;
  font-size: 11px;
}

.stat-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

/* ==========================================================================
   Project Detail View
   ========================================================================== */

.back-btn-container {
  margin-bottom: 24px;
}

.btn {
  background-color: var(--bg-color);
  color: var(--text-color);
  border: 2px solid var(--border-color);
  padding: 8px 16px;
  font-family: var(--font-family);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.15s ease;
}

.btn:hover {
  background-color: var(--hover-bg);
  color: var(--hover-text);
}

.project-detail-layout {
  display: grid;
  grid-template-columns: 1fr 320px;
  gap: 30px;
}

@media (max-width: 850px) {
  .project-detail-layout {
    grid-template-columns: 1fr;
  }
}

.project-main {
  border: 2px solid var(--border-color);
  padding: 30px;
  background-color: var(--card-bg);
}

.project-detail-title {
  font-size: 32px;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 12px;
}

.project-detail-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  font-size: 12px;
  color: var(--accent-color);
  padding-bottom: 20px;
  border-bottom: 2px solid var(--border-color);
  margin-bottom: 24px;
}

.project-detail-meta a {
  color: var(--text-color);
  font-weight: 700;
  text-decoration: none;
}

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

/* Representative Image */
.project-banner-container {
  width: 100%;
  max-height: 320px;
  border: 2px solid var(--border-color);
  margin-bottom: 24px;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--tag-bg);
}

.project-banner {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%);
  transition: filter 0.3s ease;
}

.project-banner:hover {
  filter: grayscale(0%);
}

/* Markdown Content Rendering */
.project-content {
  font-size: 14px;
  line-height: 1.7;
}

.project-content h1,
.project-content h2,
.project-content h3 {
  font-weight: 800;
  margin-top: 24px;
  margin-bottom: 12px;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 6px;
  color: var(--text-color);
}

.project-content h1 { font-size: 22px; }
.project-content h2 { font-size: 18px; }
.project-content h3 { font-size: 15px; }

.project-content p {
  margin-bottom: 16px;
}

.project-content ul,
.project-content ol {
  margin-bottom: 16px;
  padding-left: 20px;
}

.project-content li {
  margin-bottom: 6px;
}

.project-content pre {
  border: 2px solid var(--border-color);
  padding: 15px;
  background-color: var(--tag-bg);
  overflow-x: auto;
  margin-bottom: 16px;
}

.project-content code {
  font-family: var(--font-family);
  font-size: 13px;
  background-color: var(--tag-bg);
  padding: 2px 5px;
  border: 1px solid var(--border-color);
}

.project-content pre code {
  background-color: transparent;
  padding: 0;
  border: none;
}

.project-content blockquote {
  border-left: 4px solid var(--border-color);
  padding-left: 15px;
  margin-left: 0;
  margin-bottom: 16px;
  font-style: italic;
}

/* Sidebar Info Card */
.project-sidebar {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.info-card {
  border: 2px solid var(--border-color);
  padding: 24px;
  background-color: var(--card-bg);
}

.info-card-title {
  font-size: 14px;
  font-weight: 800;
  margin-bottom: 15px;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 6px;
  text-transform: uppercase;
}

.info-grid {
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-size: 13px;
}

.info-row {
  display: flex;
  justify-content: space-between;
  border-bottom: 1px dashed var(--border-color);
  padding-bottom: 8px;
}

.info-label {
  color: var(--accent-color);
  font-weight: 700;
}

.info-value {
  font-weight: 800;
  text-align: right;
}

.action-buttons {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 15px;
}

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

/* Stats panel (Likes, Bookmarks, Comments placeholder) */
.interact-panel {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.interact-btn {
  flex: 1;
  background: none;
  border: 2px solid var(--border-color);
  color: var(--text-color);
  padding: 8px;
  font-family: var(--font-family);
  font-size: 12px;
  font-weight: 800;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all 0.15s ease;
}

.interact-btn:hover {
  background-color: var(--hover-bg);
  color: var(--hover-text);
}

/* ==========================================================================
   User Profile View
   ========================================================================== */

.profile-header-card {
  border: 2px solid var(--border-color);
  background-color: var(--card-bg);
  padding: 30px;
  margin-bottom: 30px;
  display: flex;
  gap: 25px;
  align-items: center;
  flex-wrap: wrap;
}

.profile-avatar {
  width: 90px;
  height: 90px;
  border: 2px solid var(--border-color);
  object-fit: cover;
  filter: grayscale(100%);
}

.profile-details {
  flex: 1;
  min-width: 250px;
}

.profile-name {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 4px;
}

.profile-username {
  font-size: 13px;
  color: var(--accent-color);
  margin-bottom: 12px;
}

.profile-bio {
  font-size: 14px;
}

.profile-meta {
  font-size: 12px;
  margin-top: 12px;
  color: var(--accent-color);
  border-top: 1px dashed var(--border-color);
  padding-top: 8px;
}

.profile-projects-title {
  font-size: 18px;
  font-weight: 800;
  margin-bottom: 15px;
  border-bottom: 2px solid var(--border-color);
  padding-bottom: 8px;
}

/* ==========================================================================
   Submit Guide / Helper
   ========================================================================== */

.submit-container {
  max-width: 800px;
  margin: 0 auto;
}

.submit-header {
  border-bottom: 3px solid var(--border-color);
  padding-bottom: 15px;
  margin-bottom: 25px;
}

.submit-title {
  font-size: 26px;
  font-weight: 800;
}

.submit-subtitle {
  font-size: 13px;
  color: var(--accent-color);
  margin-top: 4px;
}

.guide-box {
  border: 2px dashed var(--border-color);
  padding: 20px;
  background-color: var(--tag-bg);
  margin-bottom: 25px;
  font-size: 13px;
}

.guide-box h4 {
  font-weight: 800;
  margin-bottom: 10px;
}

.guide-box ol {
  padding-left: 20px;
}

.guide-box li {
  margin-bottom: 6px;
}

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

.form-label {
  display: block;
  font-size: 13px;
  font-weight: 800;
  margin-bottom: 6px;
  text-transform: uppercase;
}

.form-control {
  width: 100%;
  padding: 10px 12px;
  font-family: var(--font-family);
  font-size: 13px;
  background-color: var(--bg-color);
  color: var(--text-color);
  border: 2px solid var(--border-color);
  outline: none;
  transition: border-color 0.2s ease;
}

.form-control:focus {
  box-shadow: 2px 2px 0px var(--border-color);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 15px;
}

@media (max-width: 600px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

.submit-actions {
  display: flex;
  justify-content: flex-end;
  gap: 15px;
  margin-top: 30px;
}

/* Code Generator Output */
.generator-output {
  margin-top: 35px;
  border-top: 2px solid var(--border-color);
  padding-top: 25px;
}

.generator-output-title {
  font-size: 14px;
  font-weight: 800;
  margin-bottom: 10px;
  text-transform: uppercase;
}

.code-wrapper {
  position: relative;
}

.code-box {
  width: 100%;
  height: 250px;
  font-family: var(--font-family);
  font-size: 12px;
  background-color: var(--tag-bg);
  color: var(--text-color);
  border: 2px solid var(--border-color);
  padding: 15px;
  overflow: auto;
  white-space: pre;
  margin-bottom: 15px;
}

/* ==========================================================================
   Footer
   ========================================================================== */

footer {
  border-top: 3px solid var(--border-color);
  padding: 30px 20px;
  text-align: center;
  font-size: 12px;
  color: var(--accent-color);
  background-color: var(--bg-color);
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

footer a {
  color: var(--text-color);
  text-decoration: none;
  font-weight: 700;
}

footer a:hover {
  text-decoration: underline;
}

/* ==========================================================================
   Common Utilities
   ========================================================================== */

.text-center { text-align: center; }
.error-msg:not(:empty) {
  border: 2px solid var(--border-color);
  padding: 20px;
  background-color: var(--tag-bg);
  text-align: center;
  font-weight: 700;
  margin: 40px 0;
}

.loading {
  text-align: center;
  font-size: 14px;
  font-weight: 800;
  padding: 40px 0;
}

/* ==========================================================================
   Authentication & Profiles
   ========================================================================== */

.auth-container {
  max-width: 450px;
  margin: 40px auto;
}

.auth-card {
  border: 3px solid var(--border-color);
  padding: 30px;
  background-color: var(--card-bg);
  box-shadow: 6px 6px 0px var(--border-color);
}

.auth-header {
  border-bottom: 3px solid var(--border-color);
  padding-bottom: 12px;
  margin-bottom: 24px;
}

.auth-title {
  font-size: 22px;
  font-weight: 800;
  text-transform: uppercase;
}

.auth-footer {
  margin-top: 20px;
  text-align: center;
  font-size: 12px;
}

.auth-toggle-link {
  color: var(--text-color);
  font-weight: 800;
  text-decoration: underline;
  cursor: pointer;
  background: none;
  border: none;
  font-family: inherit;
}

.error-text {
  color: #d9534f;
  font-size: 11px;
  font-weight: 700;
  margin-top: 5px;
  display: block;
}

[data-theme="dark"] .error-text {
  color: #ff6b6b;
}

/* User Nav Dropdown / Status info in Header */
.user-menu-btn img {
  border: 1px solid var(--border-color);
  object-fit: cover;
  filter: grayscale(100%);
  border-radius: 50%;
}

.user-menu-btn:hover img {
  filter: grayscale(0%);
}

/* Admin Badge */
.admin-badge {
  display: inline-block;
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.08em;
  padding: 2px 6px;
  background-color: var(--text-color);
  color: var(--bg-color);
  border-radius: 2px;
  vertical-align: middle;
  line-height: 1.4;
  margin-left: 4px;
  text-transform: uppercase;
}

/* Verification Pending Info */
.verification-card {
  border: 3px dashed var(--border-color);
  padding: 30px;
  background-color: var(--tag-bg);
  text-align: center;
  max-width: 600px;
  margin: 40px auto;
}

.verification-card h3 {
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 15px;
}

.verification-card p {
  font-size: 13px;
  margin-bottom: 20px;
  line-height: 1.6;
}

/* Profile Edit Container */
.profile-edit-container {
  max-width: 600px;
  margin: 0 auto;
}