/*
Theme Name: KIIC Theme
Theme URI: https://www.kiic.jp
Author: KIIC
Author URI: https://www.kiic.jp
Description: NPO法人 関西情報化維新協議会 公式サイトテーマ
Version: 1.0.0
License: GNU General Public License v2 or later
Text Domain: kiic
*/

/* ===========================
   CSS Variables
   =========================== */
:root {
  --color-primary: #1a4d8f;
  --color-primary-dark: #0f3266;
  --color-primary-light: #2e6fc2;
  --color-accent: #e8511a;
  --color-accent-light: #f26d38;
  --color-text: #2c2c2c;
  --color-text-light: #555555;
  --color-text-muted: #888888;
  --color-bg: #ffffff;
  --color-bg-gray: #f5f6f8;
  --color-bg-dark: #1a2a40;
  --color-border: #dde3ec;
  --color-border-light: #eef1f6;
  --font-main: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Meiryo', sans-serif;
  --font-heading: 'Noto Serif JP', 'Hiragino Mincho ProN', serif;
  --font-size-base: 15px;
  --line-height-base: 1.8;
  --max-width: 1100px;
  --header-height: 80px;
  --radius: 4px;
  --shadow: 0 2px 12px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 24px rgba(0,0,0,0.12);
  --transition: 0.25s ease;
}

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

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-main);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: var(--line-height-base);
  -webkit-font-smoothing: antialiased;
}

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

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

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

ul, ol {
  list-style: none;
}

/* ===========================
   Layout
   =========================== */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

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

.site-content {
  flex: 1;
  padding: 48px 0 64px;
}

/* Two-column layout */
.content-area {
  display: grid;
  grid-template-columns: 1fr 280px;
  gap: 48px;
  align-items: start;
}

/* ===========================
   Header
   =========================== */
.site-header {
  background: var(--color-bg);
  border-bottom: 3px solid var(--color-primary);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}

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

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

.site-branding .logo-mark {
  width: 48px;
  height: 48px;
  background: var(--color-primary);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 900;
  font-size: 20px;
  letter-spacing: -1px;
  font-family: var(--font-heading);
  flex-shrink: 0;
}

.site-title {
  font-size: 0.85rem;
  line-height: 1.4;
  font-family: var(--font-heading);
}

.site-title a {
  color: var(--color-text);
  font-weight: 700;
}

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

.site-title .subtitle {
  font-size: 0.7rem;
  color: var(--color-text-muted);
  font-weight: 400;
  display: block;
}

/* Navigation */
.main-navigation ul {
  display: flex;
  align-items: center;
  gap: 4px;
}

.main-navigation li {
  position: relative;
}

.main-navigation a {
  display: block;
  padding: 8px 14px;
  color: var(--color-text);
  font-size: 0.82rem;
  font-weight: 500;
  border-radius: var(--radius);
  transition: all var(--transition);
  white-space: nowrap;
}

.main-navigation a:hover,
.main-navigation .current-menu-item > a {
  color: var(--color-primary);
  background: rgba(26, 77, 143, 0.06);
}

/* Dropdown */
.main-navigation .sub-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-top: 2px solid var(--color-primary);
  min-width: 200px;
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-4px);
  transition: all var(--transition);
  z-index: 200;
  flex-direction: column;
  gap: 0;
}

.main-navigation li:hover > .sub-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.main-navigation .sub-menu a {
  padding: 10px 16px;
  border-radius: 0;
  font-size: 0.8rem;
  border-bottom: 1px solid var(--color-border-light);
}

.main-navigation .sub-menu a:hover {
  background: var(--color-bg-gray);
  padding-left: 20px;
}

/* ===========================
   Hero / Page Header
   =========================== */
.hero-section {
  background: linear-gradient(135deg, var(--color-primary-dark) 0%, var(--color-primary) 60%, var(--color-primary-light) 100%);
  color: white;
  padding: 72px 0 64px;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 60%;
  height: 200%;
  background: rgba(255,255,255,0.03);
  transform: rotate(-15deg);
}

.hero-section::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--color-accent), var(--color-accent-light), transparent);
}

.hero-content {
  position: relative;
  z-index: 1;
}

.hero-label {
  display: inline-block;
  background: rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.9);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  padding: 4px 12px;
  border-radius: 20px;
  margin-bottom: 16px;
  border: 1px solid rgba(255,255,255,0.2);
}

.hero-title {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 16px;
}

.hero-description {
  font-size: 0.95rem;
  line-height: 1.9;
  opacity: 0.88;
  max-width: 680px;
}

/* Page header (内部ページ用) */
.page-header {
  background: var(--color-bg-gray);
  border-bottom: 1px solid var(--color-border);
  padding: 28px 0 24px;
}

.page-header-title {
  font-family: var(--font-heading);
  font-size: 1.6rem;
  color: var(--color-primary);
  font-weight: 700;
}

.page-header-title::before {
  content: '';
  display: inline-block;
  width: 4px;
  height: 1.4em;
  background: var(--color-accent);
  margin-right: 12px;
  vertical-align: middle;
}

/* ===========================
   News / Post List
   =========================== */
.news-list {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.news-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--color-border-light);
  transition: background var(--transition);
}

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

.news-item:hover {
  background: var(--color-bg-gray);
}

.news-date {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  white-space: nowrap;
  padding-top: 2px;
  min-width: 90px;
  font-family: 'Georgia', serif;
}

.news-category {
  display: inline-block;
  padding: 2px 10px;
  font-size: 0.68rem;
  font-weight: 600;
  border-radius: 2px;
  white-space: nowrap;
  letter-spacing: 0.02em;
}

.cat-seminar { background: #e8f0fb; color: #1a4d8f; }
.cat-event   { background: #fde8e0; color: #c0390e; }
.cat-news    { background: #e8f6ee; color: #1a7a42; }
.cat-report  { background: #f5e8fb; color: #7a1a8f; }

.news-title-link {
  font-size: 0.88rem;
  color: var(--color-text);
  line-height: 1.6;
}

.news-title-link:hover {
  color: var(--color-primary);
  text-decoration: underline;
}

/* Post card grid */
.post-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.post-card {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: all var(--transition);
}

.post-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
  border-color: var(--color-primary-light);
}

.post-card-body {
  padding: 20px;
}

.post-card-date {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-bottom: 8px;
}

.post-card-title {
  font-size: 0.92rem;
  font-weight: 600;
  line-height: 1.5;
  margin-bottom: 10px;
}

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

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

.post-card-excerpt {
  font-size: 0.82rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ===========================
   Section Headers
   =========================== */
.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--color-primary);
}

.section-title {
  font-family: var(--font-heading);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-primary);
}

.section-title::before {
  content: '■';
  font-size: 0.8em;
  margin-right: 8px;
  color: var(--color-accent);
}

.section-more-link {
  font-size: 0.78rem;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 4px;
}

.section-more-link::after {
  content: '›';
  font-size: 1.2em;
}

.section-more-link:hover {
  color: var(--color-accent);
}

/* ===========================
   Sidebar
   =========================== */
.sidebar {
  position: sticky;
  top: calc(var(--header-height) + 24px);
}

.widget {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: 24px;
}

.widget-title {
  background: var(--color-primary);
  color: white;
  font-size: 0.82rem;
  font-weight: 700;
  padding: 10px 16px;
  letter-spacing: 0.04em;
}

.widget-content {
  padding: 16px;
}

.widget-menu li {
  border-bottom: 1px solid var(--color-border-light);
}

.widget-menu li:last-child {
  border-bottom: none;
}

.widget-menu a {
  display: block;
  padding: 9px 12px 9px 0;
  font-size: 0.82rem;
  color: var(--color-text);
  transition: all var(--transition);
}

.widget-menu a::before {
  content: '▶';
  font-size: 0.6em;
  color: var(--color-accent);
  margin-right: 6px;
}

.widget-menu a:hover {
  color: var(--color-primary);
  padding-left: 4px;
}

/* Recent posts widget */
.widget-posts li {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border-light);
  font-size: 0.8rem;
}

.widget-posts li:last-child {
  border-bottom: none;
}

.widget-posts a {
  color: var(--color-text);
  line-height: 1.5;
}

.widget-posts .post-date {
  font-size: 0.72rem;
  color: var(--color-text-muted);
  display: block;
  margin-top: 3px;
}

/* ===========================
   Single Post / Page Content
   =========================== */
.entry-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--color-border);
}

.entry-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}

.entry-date {
  font-size: 0.8rem;
  color: var(--color-text-muted);
}

.entry-title {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  line-height: 1.45;
  color: var(--color-text);
}

.entry-content {
  font-size: 0.92rem;
  line-height: 1.9;
}

.entry-content h2 {
  font-family: var(--font-heading);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--color-primary);
  margin: 2em 0 0.8em;
  padding-left: 12px;
  border-left: 4px solid var(--color-primary);
}

.entry-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin: 1.6em 0 0.6em;
}

.entry-content p {
  margin-bottom: 1.4em;
}

.entry-content ul, .entry-content ol {
  margin: 1em 0 1.4em 1.5em;
  list-style: disc;
}

.entry-content ol {
  list-style: decimal;
}

.entry-content li {
  margin-bottom: 0.4em;
}

.entry-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5em 0;
  font-size: 0.88rem;
}

.entry-content th {
  background: var(--color-primary);
  color: white;
  padding: 10px 14px;
  text-align: left;
  font-weight: 600;
}

.entry-content td {
  padding: 9px 14px;
  border-bottom: 1px solid var(--color-border);
}

.entry-content tr:nth-child(even) td {
  background: var(--color-bg-gray);
}

/* ===========================
   Breadcrumb
   =========================== */
.breadcrumb {
  padding: 10px 0;
  font-size: 0.78rem;
  color: var(--color-text-muted);
}

.breadcrumb ol {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: wrap;
}

.breadcrumb li + li::before {
  content: '›';
  color: var(--color-border);
}

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

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

/* ===========================
   Pagination
   =========================== */
.pagination {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 6px;
  margin-top: 40px;
  padding-top: 32px;
  border-top: 1px solid var(--color-border);
}

.pagination a,
.pagination span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.82rem;
  color: var(--color-text);
  transition: all var(--transition);
}

.pagination a:hover,
.pagination .current {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

/* ===========================
   Footer
   =========================== */
.site-footer {
  background: var(--color-bg-dark);
  color: rgba(255,255,255,0.8);
  padding-top: 56px;
}

.footer-widgets {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.1);
}

.footer-widget-title {
  font-size: 0.82rem;
  font-weight: 700;
  color: white;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 1px solid rgba(255,255,255,0.15);
  letter-spacing: 0.05em;
}

.footer-about .org-name {
  font-family: var(--font-heading);
  font-size: 1rem;
  color: white;
  font-weight: 700;
  margin-bottom: 10px;
}

.footer-about p {
  font-size: 0.8rem;
  line-height: 1.8;
  color: rgba(255,255,255,0.65);
}

.footer-nav ul {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.footer-nav a {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.7);
  padding: 4px 0;
  display: block;
}

.footer-nav a:hover {
  color: white;
}

.footer-nav a::before {
  content: '– ';
  color: rgba(255,255,255,0.3);
}

.footer-bottom {
  background: rgba(0,0,0,0.2);
  padding: 16px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  color: rgba(255,255,255,0.45);
}

.footer-bottom a {
  color: rgba(255,255,255,0.5);
}

/* ===========================
   Buttons
   =========================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 24px;
  border-radius: var(--radius);
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  border: none;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(26,77,143,0.3);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: white;
}

/* ===========================
   Forms
   =========================== */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--color-text);
}

.form-label .required {
  color: var(--color-accent);
  margin-left: 4px;
  font-size: 0.75rem;
}

.form-control {
  width: 100%;
  padding: 10px 14px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.88rem;
  font-family: var(--font-main);
  color: var(--color-text);
  background: var(--color-bg);
  transition: border-color var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(26,77,143,0.12);
}

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

/* ===========================
   Notices
   =========================== */
.notice {
  padding: 14px 18px;
  border-radius: var(--radius);
  font-size: 0.85rem;
  margin-bottom: 20px;
  border-left: 4px solid;
}

.notice-info    { background: #e8f0fb; border-color: var(--color-primary); color: #1a3a70; }
.notice-success { background: #e8f6ee; border-color: #1a7a42; color: #145933; }
.notice-warning { background: #fef8e1; border-color: #c89f00; color: #7a5d00; }
.notice-error   { background: #fdeae8; border-color: var(--color-accent); color: #8f1a0f; }

/* ===========================
   Utilities
   =========================== */
.text-center { text-align: center; }
.text-right  { text-align: right; }
.mt-4  { margin-top: 16px; }
.mt-8  { margin-top: 32px; }
.mb-4  { margin-bottom: 16px; }
.mb-8  { margin-bottom: 32px; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap;
}

/* ===========================
   Responsive
   =========================== */
@media (max-width: 960px) {
  .content-area {
    grid-template-columns: 1fr;
  }
  .sidebar {
    position: static;
  }
  .footer-widgets {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 64px;
    --font-size-base: 14px;
  }
  .hero-title {
    font-size: 1.6rem;
  }
  .main-navigation {
    display: none; /* モバイルメニューはJSで制御 */
  }
  .hamburger {
    display: flex;
  }
  .footer-widgets {
    grid-template-columns: 1fr;
    gap: 32px;
  }
  .footer-bottom {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}

/* ===========================
   Mobile Menu
   =========================== */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: all 0.3s;
}

.mobile-menu {
  display: none;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  padding: 12px 0;
}

.mobile-menu.active {
  display: block;
}

.mobile-menu a {
  display: block;
  padding: 12px 24px;
  font-size: 0.9rem;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border-light);
}

.mobile-menu a:hover {
  background: var(--color-bg-gray);
  color: var(--color-primary);
}