/*
Theme Name: AIxSAP
Theme URI: https://aixsap.com
Author: AIxSAP
Author URI: https://aixsap.com
Description: SAP ABAP & AI Insights — Kodeco tarzı modern, temiz, profesyonel WordPress blog teması.
Version: 4.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 7.4
License: GNU General Public License v2 or later
License URI: http://www.gnu.org/licenses/gpl-2.0.html
Text Domain: aixsap
Tags: blog, technology, custom-menu, custom-logo, featured-images
*/

:root {
  --bg: #ffffff;
  --bg-hero: linear-gradient(135deg, #f0f7ff 0%, #f8fafe 50%, #eef8f3 100%);
  --bg-footer: #fafafa;
  --text: #111111;
  --text-light: #666666;
  --text-muted: #888888;
  --text-faint: #999999;
  --text-ghost: #bbbbbb;
  --text-whisper: #cccccc;
  --border: #f0f0f0;
  --border-hero: #e8eef4;
  --border-input: #e0e4ea;
  --blue: #0070F2;
  --blue-dark: #005ecf;
  --blue-bg: #EBF3FE;
  --green: #00875A;
  --green-bg: #E6F5EF;
  --orange: #E36F00;
  --orange-bg: #FFF0E0;
  --purple: #7B61FF;
  --purple-bg: #F0ECFF;
  --font: 'Plus Jakarta Sans', sans-serif;
  --mono: 'DM Mono', monospace;
  --max-w: 1200px;
  --radius: 12px;
  --radius-sm: 10px;
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body { font-family: var(--font); background: var(--bg); color: var(--text); line-height: 1.6; }
a { text-decoration: none; color: inherit; transition: color 0.2s; }
img { max-width: 100%; height: auto; display: block; }
::selection { background: rgba(0,112,242,0.12); }
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: #fff; }
::-webkit-scrollbar-thumb { background: #e0e0e0; border-radius: 3px; }

@keyframes fadeInUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }

.container { max-width: var(--max-w); margin: 0 auto; padding: 0 32px; }

/* ══════ NAVBAR ══════ */
.site-header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: #fff; border-bottom: 1px solid var(--border);
  transition: box-shadow 0.3s;
}
.site-header.scrolled { box-shadow: 0 1px 12px rgba(0,0,0,0.06); }
.site-header .container { height: 64px; display: flex; align-items: center; justify-content: space-between; }

.site-logo { display: flex; align-items: center; gap: 10px; }
.site-logo__icon {
  width: 36px; height: 36px; border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--blue), var(--green));
  display: flex; align-items: center; justify-content: center;
  font-family: var(--mono); font-weight: 700; font-size: 13px; color: #fff;
}
.site-logo__text { font-weight: 800; font-size: 20px; color: var(--text); letter-spacing: -0.5px; }
.site-logo__text span { color: var(--blue); }

.main-nav { display: flex; align-items: center; gap: 32px; }
.main-nav a { color: var(--text-muted); font-size: 14px; font-weight: 500; }
.main-nav a:hover { color: var(--blue); }
.main-nav .current-menu-item > a, .main-nav .current_page_item > a { color: var(--text); font-weight: 600; }

.nav-right { display: flex; align-items: center; gap: 20px; }
.nav-divider { width: 1px; height: 24px; background: #eee; }

.btn-primary {
  display: inline-flex; align-items: center; gap: 6px;
  background: var(--blue); border: none; border-radius: var(--radius-sm);
  padding: 10px 22px; color: #fff; font-family: var(--font);
  font-size: 13.5px; font-weight: 600; cursor: pointer;
  box-shadow: 0 2px 8px rgba(0,112,242,0.2); transition: all 0.2s;
}
.btn-primary:hover { background: var(--blue-dark); transform: translateY(-1px); color: #fff; }

.btn-outline {
  display: inline-flex; align-items: center;
  background: #fff; border: 1px solid var(--border-input); border-radius: var(--radius-sm);
  padding: 10px 22px; color: #555; font-family: var(--font);
  font-size: 14px; font-weight: 500; cursor: pointer; transition: all 0.2s;
}
.btn-outline:hover { border-color: var(--blue); color: var(--blue); }

.menu-toggle { display: none; background: none; border: none; cursor: pointer; padding: 8px; }
.menu-toggle span { display: block; width: 22px; height: 2px; background: var(--text); margin: 5px 0; border-radius: 1px; }

/* ══════ HERO ══════ */
.hero {
  background: var(--bg-hero); border-bottom: 1px solid var(--border-hero);
  padding: 100px 0 56px;
  animation: fadeInUp 0.6s cubic-bezier(0.16,1,0.3,1);
}
.hero .container { display: flex; align-items: center; justify-content: space-between; gap: 48px; }
.hero__content { max-width: 560px; }

.hero__badge {
  display: inline-flex; align-items: center; gap: 8px;
  background: #fff; border: 1px solid #e0e8f0; border-radius: 100px;
  padding: 6px 16px 6px 10px; margin-bottom: 24px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}
.hero__badge-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); }
.hero__badge-text { font-family: var(--mono); font-size: 12px; color: var(--blue); font-weight: 500; }

.hero__title { font-size: 42px; font-weight: 800; line-height: 1.15; color: var(--text); margin: 0 0 16px; letter-spacing: -1px; }
.hero__title span { color: var(--blue); }
.hero__desc { font-size: 16px; line-height: 1.7; color: var(--text-light); margin: 0 0 28px; }
.hero__actions { display: flex; gap: 12px; flex-wrap: wrap; }

.hero__illustration {
  width: 440px; height: 300px; border-radius: 16px; overflow: hidden; flex-shrink: 0;
  background: #fff; border: 1px solid var(--border-hero);
  box-shadow: 0 4px 24px rgba(0,0,0,0.04);
}

/* ══════ SECTION HEADER ══════ */
.section-header { display: flex; align-items: center; justify-content: space-between; margin-bottom: 28px; flex-wrap: wrap; gap: 16px; }
.section-header h2 { font-size: 24px; font-weight: 800; color: var(--text); letter-spacing: -0.3px; }
.section-header p { font-size: 14px; color: var(--text-faint); margin-top: 4px; }

/* ══════ CATEGORY FILTER ══════ */
.cat-filter { display: flex; gap: 8px; flex-wrap: wrap; }
.cat-pill {
  display: inline-block; background: #fff; border: 1px solid var(--border-input);
  border-radius: 100px; padding: 8px 18px; color: var(--text-light);
  font-size: 13px; font-weight: 500; cursor: pointer; transition: all 0.2s;
}
.cat-pill:hover { border-color: var(--blue); color: var(--blue); }
.cat-pill.active { background: var(--text); border-color: transparent; color: #fff; }
.cat-pill.active--blue { background: var(--blue); }
.cat-pill.active--green { background: var(--green); }
.cat-pill.active--orange { background: var(--orange); }
.cat-pill.active--purple { background: var(--purple); }

/* ══════ ARTICLE CARDS ══════ */
.article-card {
  display: grid; grid-template-columns: 280px 1fr; gap: 28px;
  padding: 24px 0; border-bottom: 1px solid var(--border);
  animation: fadeInUp 0.45s cubic-bezier(0.16,1,0.3,1) both;
}
.article-card:nth-child(1) { animation-delay: 0.05s; }
.article-card:nth-child(2) { animation-delay: 0.1s; }
.article-card:nth-child(3) { animation-delay: 0.15s; }
.article-card:nth-child(4) { animation-delay: 0.2s; }
.article-card:nth-child(5) { animation-delay: 0.25s; }
.article-card:nth-child(6) { animation-delay: 0.3s; }

.article-card:hover .article-card__thumb { transform: scale(0.98); box-shadow: 0 4px 16px rgba(0,0,0,0.08); }
.article-card:hover .article-card__title a { color: var(--blue); }

.article-card__thumb {
  border-radius: var(--radius); overflow: hidden; aspect-ratio: 16/10.5;
  transition: all 0.35s cubic-bezier(0.16,1,0.3,1);
  box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}
.article-card__thumb img { width: 100%; height: 100%; object-fit: cover; }
.article-card__thumb--blue { background: var(--blue-bg); }
.article-card__thumb--green { background: var(--green-bg); }
.article-card__thumb--orange { background: var(--orange-bg); }
.article-card__thumb--purple { background: var(--purple-bg); }

.article-card__content { display: flex; flex-direction: column; justify-content: center; padding-top: 4px; }

.article-card__meta { display: flex; align-items: center; gap: 10px; margin-bottom: 10px; flex-wrap: wrap; }
.article-card__badge {
  font-size: 11.5px; font-weight: 600; padding: 4px 10px; border-radius: 6px; letter-spacing: 0.2px;
}
.article-card__badge--blue { background: var(--blue-bg); color: var(--blue); }
.article-card__badge--green { background: var(--green-bg); color: var(--green); }
.article-card__badge--orange { background: var(--orange-bg); color: var(--orange); }
.article-card__badge--purple { background: var(--purple-bg); color: var(--purple); }

.article-card__sep { color: #ccc; font-size: 10px; }
.article-card__type { font-size: 12px; color: var(--text-faint); font-weight: 500; }

.article-card__title { font-size: 19px; font-weight: 700; line-height: 1.4; margin: 0 0 8px; letter-spacing: -0.2px; }
.article-card__title a { color: var(--text); transition: color 0.2s; }

.article-card__excerpt {
  font-size: 14px; line-height: 1.65; color: var(--text-muted); margin: 0 0 12px;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden;
}

.article-card__date { font-family: var(--mono); font-size: 12px; color: var(--text-ghost); }

/* Load more */
.load-more { text-align: center; padding: 36px 0 60px; }
.load-more a, .load-more button { font-family: var(--font); }

/* ══════ FOOTER ══════ */
.site-footer { background: var(--bg-footer); border-top: 1px solid #eee; }
.footer__grid { display: flex; justify-content: space-between; gap: 48px; flex-wrap: wrap; padding: 48px 0 0; }
.footer__brand { max-width: 300px; }
.footer__brand p { font-size: 13px; color: var(--text-faint); line-height: 1.65; margin-top: 12px; }
.footer__cols { display: flex; gap: 56px; }
.footer__col h4 { font-size: 12px; font-weight: 700; color: #444; margin: 0 0 16px; text-transform: uppercase; letter-spacing: 1px; }
.footer__col a { display: block; font-size: 13px; color: var(--text-faint); margin-bottom: 10px; }
.footer__col a:hover { color: var(--blue); }
.footer__bottom {
  margin-top: 36px; padding: 20px 0; border-top: 1px solid #eee;
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 8px;
}
.footer__copy, .footer__wp { font-family: var(--mono); font-size: 11px; }
.footer__copy { color: var(--text-whisper); }
.footer__wp { color: #ddd; }

/* ══════ PAGINATION ══════ */
.pagination { display: flex; gap: 6px; justify-content: center; padding: 24px 0 56px; }
.pagination a, .pagination span {
  display: inline-flex; align-items: center; justify-content: center;
  min-width: 38px; height: 38px; padding: 0 12px; border-radius: 8px;
  font-family: var(--mono); font-size: 12px;
  border: 1px solid var(--border); color: var(--text-light); transition: all 0.2s;
}
.pagination a:hover { border-color: var(--blue); color: var(--blue); }
.pagination .current { background: var(--blue); border-color: var(--blue); color: #fff; }

/* ══════ SINGLE POST ══════ */
.single-header { padding: 100px 0 24px; }
.single-header h1 { font-size: clamp(28px, 4vw, 38px); font-weight: 800; color: var(--text); line-height: 1.3; letter-spacing: -0.5px; max-width: 720px; margin-bottom: 16px; }
.single-meta { display: flex; gap: 10px; flex-wrap: wrap; font-size: 13px; color: var(--text-faint); margin-bottom: 32px; }

.single-content { max-width: 720px; padding-bottom: 80px; }
.single-content h2 { font-size: 26px; font-weight: 800; color: var(--text); margin: 48px 0 16px; letter-spacing: -0.3px; }
.single-content h3 { font-size: 21px; font-weight: 700; color: var(--text); margin: 36px 0 12px; }
.single-content p { font-size: 16.5px; line-height: 1.85; color: #444; margin-bottom: 22px; }
.single-content a { color: var(--blue); text-decoration: underline; text-underline-offset: 3px; }
.single-content a:hover { color: var(--blue-dark); }
.single-content pre {
  background: #f6f8fa; border: 1px solid var(--border); border-radius: var(--radius);
  padding: 20px 24px; overflow-x: auto; margin: 28px 0;
  font-family: var(--mono); font-size: 13.5px; line-height: 1.8; color: #444;
}
.single-content code { font-family: var(--mono); font-size: 0.88em; background: var(--blue-bg); padding: 2px 6px; border-radius: 4px; color: var(--blue); }
.single-content pre code { background: none; padding: 0; color: inherit; }
.single-content ul, .single-content ol { margin: 0 0 22px 24px; color: #444; }
.single-content li { margin-bottom: 8px; font-size: 16.5px; line-height: 1.8; }
.single-content blockquote { border-left: 3px solid var(--blue); padding: 16px 24px; margin: 28px 0; background: rgba(0,112,242,0.03); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.single-content blockquote p { color: #555; font-style: italic; }
.single-content img { border-radius: var(--radius); margin: 28px 0; }

.post-tags { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 40px; padding-top: 24px; border-top: 1px solid var(--border); }
.post-tags a { background: var(--blue-bg); border-radius: 6px; padding: 4px 12px; font-family: var(--mono); font-size: 12px; color: var(--blue); font-weight: 500; transition: background 0.2s; }
.post-tags a:hover { background: rgba(0,112,242,0.12); }

.post-nav { display: flex; justify-content: space-between; gap: 20px; margin-top: 32px; padding-top: 24px; border-top: 1px solid var(--border); flex-wrap: wrap; }

/* ══════ PAGE ══════ */
.page-header { padding: 100px 0 24px; }
.page-header h1 { font-size: clamp(30px, 5vw, 42px); font-weight: 800; color: var(--text); letter-spacing: -0.5px; }
.page-content { max-width: 720px; padding-bottom: 80px; }
.page-content p { font-size: 16.5px; line-height: 1.85; color: #444; margin-bottom: 22px; }

/* ══════ 404 ══════ */
.error-404 { text-align: center; padding: 140px 0 80px; }
.error-404 h1 { font-size: 80px; font-weight: 800; color: var(--blue); margin-bottom: 12px; letter-spacing: -2px; }
.error-404 p { font-size: 16px; color: var(--text-faint); margin-bottom: 32px; }

/* ══════ COMMENTS ══════ */
.comments-area { max-width: 720px; padding: 40px 0 80px; border-top: 1px solid var(--border); }
.comments-title { font-size: 22px; font-weight: 800; color: var(--text); margin-bottom: 24px; }
.comment-form input, .comment-form textarea {
  width: 100%; padding: 12px 16px; border-radius: var(--radius-sm);
  background: #fff; border: 1px solid var(--border-input);
  color: var(--text); font-family: var(--font); font-size: 14px; outline: none; margin-bottom: 12px;
}
.comment-form input:focus, .comment-form textarea:focus { border-color: var(--blue); box-shadow: 0 0 0 3px rgba(0,112,242,0.08); }
.comment-form textarea { min-height: 120px; resize: vertical; }
.comment-form .submit { background: var(--blue); border: none; border-radius: var(--radius-sm); padding: 12px 28px; color: #fff; font-size: 14px; font-weight: 600; cursor: pointer; }
.comment-form .submit:hover { background: var(--blue-dark); }

/* ══════ RESPONSIVE ══════ */
@media (max-width: 900px) {
  .hero .container { flex-direction: column; text-align: center; }
  .hero__content { max-width: 100%; }
  .hero__actions { justify-content: center; }
  .hero__illustration { width: 100%; max-width: 440px; height: 220px; }
  .article-card { grid-template-columns: 1fr; gap: 16px; }
  .article-card__thumb { aspect-ratio: 16/9; }
}
@media (max-width: 768px) {
  .main-nav, .nav-divider { display: none; }
  .main-nav.active { display: flex; flex-direction: column; position: fixed; inset: 0; background: rgba(255,255,255,0.98); backdrop-filter: blur(20px); justify-content: center; align-items: center; gap: 24px; z-index: 200; }
  .main-nav.active a { font-size: 20px; color: var(--text); }
  .menu-toggle { display: block; z-index: 300; }
  .footer__grid { flex-direction: column; }
  .footer__cols { flex-direction: column; gap: 32px; }
  .section-header { flex-direction: column; align-items: flex-start; }
}