/*
Theme Name: FODMAP
Theme URI: https://example.com/fodmap
Description: A minimalist WordPress theme for FODMAP educational website.
Author: Trae
Author URI: https://example.com
Version: 2.0.0
License: GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Tags: minimalist, clean, blog, health, fodmap, responsive
Text Domain: fodmap
*/

:root {
  --color-primary: #4a8c5e;
  --color-primary-light: #e8f5eb;
  --color-primary-dark: #3a724a;
  
  --color-info: #5bc0de;
  --color-info-bg: #d9edf7;
  --color-warning: #f0ad4e;
  --color-warning-bg: #fcf8e3;
  --color-success: #5cb85c;
  --color-success-bg: #dff0d8;
  --color-danger: #d9534f;
  --color-danger-bg: #f2dede;
  
  --color-text-primary: #1a1a1a;
  --color-text-secondary: #444;
  --color-text-muted: #888;
  --color-border: #e0e0e0;
  --color-border-light: #f0f0f0;
  --color-bg: #fff;
  --color-bg-header: #fafbf9;
  --color-bg-card: #fff;
}

html.dark-theme body {
  --color-primary: #6bbf7f;
  --color-primary-light: #1a3a2a;
  --color-primary-dark: #8cd6a0;
  
  --color-info: #7dd3e8;
  --color-info-bg: #1a2f3a;
  --color-warning: #e8c67b;
  --color-warning-bg: #3a2f1a;
  --color-success: #7cc97c;
  --color-success-bg: #1a3a1a;
  --color-danger: #d47575;
  --color-danger-bg: #3a1a1a;
  
  --color-text-primary: #f5f5f5;
  --color-text-secondary: #ccc;
  --color-text-muted: #888;
  --color-border: #3a3a3a;
  --color-border-light: #2a2a2a;
  --color-bg: #1a1a1a;
  --color-bg-header: #242424;
  --color-bg-card: #2a2a2a;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  margin: 0;
  padding: 0;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--color-text-secondary);
  background-color: var(--color-bg);
}

h1, h2, h3, h4, h5, h6, p {
  margin: 0;
}

.screen-reader-text {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

a {
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-primary);
}

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

.container {
  max-width: 960px;
  margin: 0 auto;
  padding: 0 2rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border-light);
  background-color: var(--color-bg-header);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-branding {
  display: flex;
  align-items: center;
}

.site-title {
  font-size: 1.5rem;
  font-weight: 600;
  line-height: 1.5;
  letter-spacing: -0.02em;
}

.site-title a {
  color: var(--color-text-primary);
}

.site-title a:hover {
  color: var(--color-primary);
}

.site-description {
  display: none;
}

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

.custom-logo {
  height: auto;
  max-height: 40px;
  width: auto;
  max-width: 160px;
}

.main-navigation {
  flex: 1;
  margin-left: 2rem;
}

.main-navigation ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 1.5rem;
}

.main-navigation li {
  display: inline-block;
}

.main-navigation a {
  font-size: 0.9375rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  padding-bottom: 0.25rem;
  border-bottom: 2px solid transparent;
  transition: all 0.2s ease;
}

.main-navigation a:hover,
.main-navigation a.current-menu-item {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

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

.search-toggle,
.theme-toggle {
  background: none;
  border: none;
  padding: 0.5rem;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color 0.2s ease;
}

.search-toggle:hover,
.theme-toggle:hover {
  color: var(--color-primary);
}

.theme-icon-dark {
  display: none;
}

.dark-theme .theme-icon-light {
  display: none;
}

.dark-theme .theme-icon-dark {
  display: block;
}

.search-modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1000;
  display: none;
  align-items: center;
  justify-content: center;
}

.search-modal.active {
  display: flex;
}

.search-modal-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.8);
}

.search-modal-content {
  position: relative;
  width: 100%;
  max-width: 600px;
  padding: 2rem;
  background-color: var(--color-bg);
  border-radius: 8px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
}

.search-modal-close {
  position: absolute;
  top: 1rem;
  right: 1rem;
  background: none;
  border: none;
  padding: 0.5rem;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color 0.2s ease;
}

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

.search-modal .search-form {
  margin: 0;
}

.search-modal .search-field {
  width: 100%;
  padding: 1rem 1.5rem;
  font-size: 1.125rem;
  border: 2px solid var(--color-border);
  border-radius: 6px;
  background-color: var(--color-bg-card);
  color: var(--color-text-primary);
  outline: none;
  transition: border-color 0.2s ease;
}

.search-modal .search-field:focus {
  border-color: var(--color-primary);
}

.search-modal .search-field::placeholder {
  color: var(--color-text-muted);
}

.search-modal .search-submit {
  display: none;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  padding: 0.5rem;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color 0.2s ease;
}

.menu-toggle:hover {
  color: var(--color-primary);
}

.menu-close {
  display: none;
}

.verification-modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.6);
  z-index: 9999;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(4px);
}

.verification-modal-overlay.active {
  display: flex;
}

.verification-modal {
  background-color: var(--color-bg-card);
  border-radius: 12px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
  max-width: 360px;
  width: 90%;
  position: relative;
  transform: scale(0.9);
  opacity: 0;
  transition: all 0.3s ease;
}

.verification-modal-overlay.active .verification-modal {
  transform: scale(1);
  opacity: 1;
}

.verification-modal-close {
  position: absolute;
  top: 12px;
  right: 12px;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: transparent;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  border-radius: 50%;
  transition: all 0.2s ease;
}

.verification-modal-close:hover {
  background-color: var(--color-bg);
  color: var(--color-text-secondary);
}

.verification-modal-content {
  padding: 2rem;
}

.arrow-verification {
  display: none;
}

.verification-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.verification-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-secondary);
}

.verification-progress {
  font-size: 0.875rem;
  color: var(--color-primary);
  font-weight: 600;
}

.verification-grid {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.arrow-btn {
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-bg);
  border: 2px solid var(--color-border);
  border-radius: 8px;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
}

.arrow-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: var(--color-primary-light);
}

.arrow-btn:active {
  transform: scale(0.95);
}

.arrow-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.arrow-btn.verification-done {
  border-color: var(--color-success);
  color: var(--color-success);
  background-color: var(--color-success-bg);
}

.arrow-btn.next-arrow {
  border-color: var(--color-primary);
  color: var(--color-primary);
  background-color: var(--color-primary-light);
  box-shadow: 0 0 15px rgba(62, 188, 127, 0.4);
  animation: pulse-arrow 1.5s infinite;
}

@keyframes pulse-arrow {
  0%, 100% {
    box-shadow: 0 0 15px rgba(62, 188, 127, 0.4);
  }
  50% {
    box-shadow: 0 0 25px rgba(62, 188, 127, 0.7);
  }
}

.verification-status {
  margin-top: 1rem;
  text-align: center;
  font-size: 0.875rem;
}

.verification-success {
  color: var(--color-success);
}

.verification-error {
  color: var(--color-danger);
}

.verification-info {
  color: var(--color-info);
}

.login .verification-modal-overlay {
  background-color: rgba(0, 0, 0, 0.7);
}

.login .verification-modal {
  background-color: #fff;
  border: 1px solid #ddd;
}

.login .verification-modal-content {
  padding: 1.5rem;
}

.login .verification-title {
  font-size: 0.8125rem;
  color: #333;
}

.login .arrow-btn {
  width: 45px;
  height: 45px;
}

.content-area {
  padding: 1rem 0;
}

.site-main {
  margin-bottom: 6rem;
}

.post-title {
  font-size: 1.6rem;
  font-weight: 400;
  line-height: 1.4;
  letter-spacing: -0.02em;
}

.post-title a {
  color: var(--color-text-primary);
}

.post-title a:hover {
  color: var(--color-primary);
}

.post-meta {
  margin-top: 1rem;
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.post-meta a {
  color: var(--color-text-muted);
}

.post-meta a:hover {
  color: var(--color-primary);
}

.post-meta .edit-link a {
  color: #d9534f;
}

.post-footer {
  margin: 0 0 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.post-footer a {
  color: var(--color-text-muted);
}

.post-footer a:hover {
  color: var(--color-primary);
}

.post-content {
  font-size: 1.0625rem;
  line-height: 1.85;
  margin-top: 0.5rem;
  color: var(--color-text-secondary);
}

.post-content p {
  margin: 0 0 0.75rem;
  text-indent: 2em;
}

.post-content h1,
.post-content h2,
.post-content h3,
.post-content h4,
.post-content h5,
.post-content h6 {
  margin: 2.5rem 0 1.25rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--color-text-primary);
}

.post-content h1 { font-size: 2rem; }
.post-content h2 { font-size: 1.625rem; }
.post-content h3 { font-size: 1.375rem; }
.post-content h4 { font-size: 1.25rem; }
.post-content h5 { font-size: 1.125rem; }
.post-content h6 { font-size: 1rem; }

.post-content ul,
.post-content ol {
  margin: 0 0 1.75rem 1.75rem;
  padding: 0 1.75rem;
}

.post-content li {
  margin-bottom: 0.625rem;
}

.post-content blockquote {
  margin: 2rem 0;
  padding: 1.5rem 2rem;
  background-color: var(--color-primary-light);
  border-left: 4px solid var(--color-primary);
  font-style: italic;
  color: var(--color-text-secondary);
  font-size: 1.125rem;
  line-height: 1.7;
}

.post-content code {
  font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
  font-size: 0.875rem;
  background-color: #f5f5f5;
  padding: 0.125rem 0.375rem;
  border-radius: 2px;
  color: #555;
}

.post-content pre {
  margin: 2rem 0;
  padding: 1.25rem;
  background-color: #f5f5f5;
  border-radius: 4px;
  overflow-x: auto;
  font-family: 'SF Mono', 'Monaco', 'Inconsolata', 'Roboto Mono', monospace;
  font-size: 0.875rem;
  line-height: 1.6;
}

.post-content pre code {
  padding: 0;
  background-color: transparent;
}

.post-content img {
  margin: 2rem 0;
  border-radius: 6px;
}

.post-thumbnail {
  margin: 2rem 0;
  border-radius: 6px;
  max-width: 100%;
  height: auto;
}

.post-thumbnail-link {
  display: block;
}

.post-navigation {
  margin-top: 0rem;
  padding: 0.5rem;
  background-color: var(--color-bg-card);
}

.nav-links {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
}

.nav-previous,
.nav-next {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  max-width: 50%;
}

.nav-next {
  text-align: right;
  align-items: flex-end;
}

.nav-label {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
}

.nav-title {
  font-size: 0.9375rem;
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-text-secondary);
}

.nav-previous a,
.nav-next a {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  color: var(--color-text-secondary);
  transition: color 0.2s ease;
}

.nav-previous a:hover,
.nav-next a:hover {
  color: var(--color-primary);
}

.nav-previous a:hover .nav-label,
.nav-next a:hover .nav-label {
  color: var(--color-primary);
}

.comments-area {
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border-light);
}

.comments-title {
  margin: 0 0 2.5rem;
  font-size: 1.5rem;
  font-weight: 400;
}

.comment-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.comment {
  margin-bottom: 1.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--color-border-light);
}

.comment-author {
  font-size: 0.875rem;
  font-weight: 600;
}

.comment-author img {
  float: left;
  margin-right: 0.5rem;
  border-radius: 50%;
}

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

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

.comment-metadata {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.comment-metadata a {
  color: var(--color-text-muted);
}

.reply-link {
  font-size: 0.75rem;
}

.comment-content {
  margin-top: 0.75rem;
  font-size: 0.9375rem;
  line-height: 1.6;
}

.comment-content p {
  margin: 0 0 0.75rem;
}

.comment-form {
  margin-top: 2rem;
}

.comment-form label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.comment-form-cookies-consent {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.comment-form-cookies-consent input {
  width: auto;
  margin-bottom: 0;
  flex-shrink: 0;
}

.comment-form .comment-form-cookies-consent label {
  display: inline-block !important;
  margin-bottom: 0 !important;
  font-weight: normal !important;
  text-transform: none !important;
  letter-spacing: normal !important;
  font-size: 0.875rem !important;
  line-height: 1.5 !important;
}

.comment-form input,
.comment-form textarea {
  width: 100%;
  padding: 0.875rem;
  margin-bottom: 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-size: 0.9375rem;
  transition: border-color 0.2s ease;
}

.comment-form input:focus,
.comment-form textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.comment-form textarea {
  resize: vertical;
  min-height: 140px;
}

.comment-form .submit {
  padding: 0.875rem 2.5rem;
  background-color: var(--color-primary);
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  cursor: pointer;
  transition: background-color 0.2s ease;
}

.comment-form .submit:hover {
  background-color: var(--color-primary-dark);
}

.search-form {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.5rem;
}

.search-field {
  flex: 1;
  padding: 0.75rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-size: 0.9375rem;
  transition: border-color 0.2s ease;
}

.search-field:focus {
  outline: none;
  border-color: var(--color-primary);
}

.search-submit {
  padding: 0.75rem 1rem;
  background-color: transparent;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}

.search-submit:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.search-icon {
  display: block;
}

.site-footer {
  padding: 4rem 0;
  text-align: center;
  border-top: 1px solid var(--color-border-light);
  background-color: var(--color-bg-header);
}

.site-info {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.site-info p {
  margin: 0;
}

.site-info a {
  color: var(--color-text-muted);
}

.site-info a:hover {
  color: var(--color-primary);
}

.page-title {
  margin: 0 0 3rem;
  font-size: 2rem;
  font-weight: 400;
  text-align: center;
}

.archive-title,
.search-title {
  margin: 0 0 3rem;
  font-size: 1.75rem;
  font-weight: 400;
}

.search-query {
  font-style: italic;
}

.error-404 .page-title {
  font-size: 3rem;
  font-weight: 300;
}

.error-404 .page-content {
  text-align: center;
}

.sticky {
  padding: 2rem;
  background-color: var(--color-primary-light);
  border-radius: 6px;
  border-left: 4px solid var(--color-primary);
}



@media (max-width: 768px) {
  .container {
    padding: 0 1.25rem;
  }

  .site-header {
    padding: 0.75rem 0;
  }

  .site-title {
    font-size: 1.125rem;
  }

  .main-navigation {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background-color: var(--color-bg-header);
    border-bottom: 1px solid var(--color-border-light);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 90;
    margin-left: 0;
  }

  .main-navigation.active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

  .main-navigation ul {
    flex-direction: column;
    padding: 1rem;
    gap: 0;
  }

  .main-navigation li {
    margin-bottom: 0.5rem;
  }

  .main-navigation a {
    display: block;
    padding: 0.75rem 0;
    border-bottom: none;
    font-size: 0.875rem;
    text-transform: none;
    letter-spacing: normal;
  }

  .menu-toggle {
    display: block;
  }

  .header-actions {
    gap: 0.25rem;
  }

  .content-area {
    padding: 2.5rem 0;
  }

  .post-title {
    font-size: 1.625rem;
  }

  .post-content {
    font-size: 1rem;
  }

  .post-content blockquote {
    padding: 1rem;
    font-size: 1rem;
  }

  .post-navigation {
    padding: 1rem;
  }

  .nav-links {
    flex-direction: column;
    gap: 1rem;
  }

  .nav-next {
    text-align: left;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .site-title {
    font-size: 1.75rem;
  }

  .main-navigation ul {
    flex-wrap: wrap;
    gap: 1rem;
  }

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

  .post-content h1,
  .post-content h2,
  .post-content h3 {
    font-size: 1.25rem;
  }
}