/*
Theme Name: Giu Lua Nghe
Theme URI: https://giuluanghe.vn
Author: Vũ Ngọc Pi
Description: Giao diện "Ba ngọn lửa" cho blog Giữ Lửa Nghề — chuyện nghề cơ khí, trường Cơ Điện và quê hương Thái Nguyên.
Version: 1.5
License: GNU General Public License v2 or later
Text Domain: giuluanghe
*/

:root{
  --giay:#F7F5EE; --muc:#26231E; --muc-nhat:#5C564C;
  --che:#2E5339; --non-che:#E3EAD8; --than-hong:#E4572E;
  --thep:#55606E; --dong:#A9752B; --vien:#DED9CC; --trang:#FFFFFF;
}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth;color-scheme:only light;background:var(--giay)}
body{background:var(--giay)!important;color:var(--muc);font-family:'Be Vietnam Pro',system-ui,sans-serif;line-height:1.65;-webkit-font-smoothing:antialiased}
img{max-width:100%;height:auto}
a{color:var(--che)}
.khung{max-width:1080px;margin:0 auto;padding:0 24px}

/* ===== Vạch than hồng đo tiến độ đọc ===== */
#tiendo{position:fixed;top:0;left:0;height:3px;width:0%;z-index:100;background:linear-gradient(90deg,var(--than-hong),#FFB088);box-shadow:0 0 8px rgba(228,87,46,.6)}

/* ===== Header ===== */
.site-header{position:sticky;top:0;z-index:50;background:rgba(247,245,238,.92);backdrop-filter:blur(8px);border-bottom:1px solid var(--vien)}
.nav-bar{display:flex;align-items:center;justify-content:space-between;min-height:68px;gap:16px;flex-wrap:wrap;padding:8px 0}
.logo{display:flex;align-items:center;gap:10px;text-decoration:none;color:var(--muc)}
.logo .chu{font-family:'Literata',serif;font-weight:800;font-size:1.3rem;letter-spacing:.01em;text-transform:uppercase}
.logo .lua{width:10px;height:10px;border-radius:50%;background:radial-gradient(circle at 35% 35%,#FFB088,var(--than-hong) 60%,#B23A16);box-shadow:0 0 10px 2px rgba(228,87,46,.55);animation:phapphoi 3.2s ease-in-out infinite}
@keyframes phapphoi{0%,100%{box-shadow:0 0 8px 2px rgba(228,87,46,.45);transform:scale(1)}50%{box-shadow:0 0 14px 4px rgba(228,87,46,.75);transform:scale(1.12)}}
.main-nav ul{display:flex;gap:22px;list-style:none;align-items:center;flex-wrap:wrap}
.main-nav a{text-decoration:none;color:var(--muc-nhat);font-size:.92rem;font-weight:500;padding:6px 2px;border-bottom:2px solid transparent;transition:color .2s,border-color .2s}
.main-nav a:hover,.main-nav .current-menu-item>a,.main-nav .current-cat>a{color:var(--che);border-bottom-color:var(--che)}

/* ===== Hero trang chủ ===== */
.hero{position:relative;overflow:hidden;padding:72px 0 60px}
.hero::before{content:"";position:absolute;right:-180px;top:-120px;width:560px;height:560px;background:radial-gradient(circle,rgba(228,87,46,.16) 0%,rgba(228,87,46,.06) 45%,transparent 70%);animation:hoitho 8s ease-in-out infinite;pointer-events:none}
@keyframes hoitho{0%,100%{opacity:.7;transform:scale(1)}50%{opacity:1;transform:scale(1.08)}}
.hero .nhan{display:inline-block;font-size:.8rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--che);margin-bottom:16px}
.hero h1{font-family:'Literata',serif;font-weight:800;font-size:clamp(2rem,4.6vw,3.2rem);line-height:1.18;max-width:18ch}
.hero h1 em{font-style:normal;color:var(--than-hong)}
.hero p.mota{margin-top:20px;max-width:58ch;color:var(--muc-nhat);font-size:1.05rem}
.loi-ngo{padding:6px 0 18px}
.loi-ngo p{max-width:68ch;font-size:1.05rem;line-height:1.9;color:var(--muc);margin:0 0 1.15em}
.duong-than{height:3px;border:none;background:linear-gradient(90deg,transparent,var(--than-hong) 18%,#FFB088 50%,var(--than-hong) 82%,transparent);opacity:.85;filter:drop-shadow(0 0 6px rgba(228,87,46,.5))}

/* ===== Ba ngọn lửa ===== */
.balua{padding:48px 0 8px}
.balua .luoi{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.ngonlua{background:var(--trang);border:1px solid var(--vien);border-radius:14px;padding:26px 24px;position:relative;overflow:hidden;transition:transform .18s,box-shadow .2s;display:block;text-decoration:none;color:var(--muc)}
.ngonlua:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(38,35,30,.08)}
.ngonlua::before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--che)}
.ngonlua.cat-thep::before{background:var(--thep)}
.ngonlua.cat-dong::before{background:var(--dong)}
.ngonlua .loailua{font-size:.76rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;margin-bottom:10px;display:block;color:var(--che)}
.ngonlua.cat-thep .loailua{color:var(--thep)}
.ngonlua.cat-dong .loailua{color:var(--dong)}
.ngonlua .ten{font-family:'Literata',serif;font-weight:700;font-size:1.16rem;margin-bottom:8px}
.ngonlua p{font-size:.92rem;color:var(--muc-nhat)}

/* ===== Tiêu đề mục ===== */
.tieude-muc{display:flex;align-items:center;gap:16px;margin:52px 0 26px}
.tieude-muc h2{font-family:'Literata',serif;font-weight:700;font-size:1.5rem;white-space:nowrap}
.tieude-muc .duong-than{flex:1}

/* ===== Lưới bài viết ===== */
.luoi-bai{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.the-bai{background:var(--trang);border:1px solid var(--vien);border-radius:14px;overflow:hidden;display:flex;flex-direction:column;transition:transform .18s,box-shadow .2s}
.the-bai:hover{transform:translateY(-3px);box-shadow:0 12px 28px rgba(38,35,30,.08)}
.the-bai .anh a{display:block;aspect-ratio:16/10;overflow:hidden;background:var(--non-che)}
.the-bai .anh img{width:100%;height:100%;object-fit:cover}
.the-bai .ruot{padding:20px 22px;display:flex;flex-direction:column;gap:9px;flex:1}
.the-bai .cm a{font-size:.74rem;font-weight:600;letter-spacing:.12em;text-transform:uppercase;text-decoration:none;color:var(--che)}
.the-bai.cat-thep .cm a{color:var(--thep)}
.the-bai.cat-dong .cm a{color:var(--dong)}
.the-bai h3{font-family:'Literata',serif;font-weight:700;font-size:1.07rem;line-height:1.35}
.the-bai h3 a{text-decoration:none;color:var(--muc)}
.the-bai h3 a:hover{color:var(--che)}
.the-bai .tomtat{font-size:.88rem;color:var(--muc-nhat);flex:1}
.the-bai .meta{font-size:.8rem;color:var(--muc-nhat)}

/* ===== Trang bài viết ===== */
.daubai{max-width:760px;margin:0 auto;padding:56px 24px 26px;text-align:center}
.daubai .chuyenmuc a{display:inline-block;font-size:.8rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--che);background:var(--non-che);padding:6px 14px;border-radius:999px;margin-bottom:20px;text-decoration:none}
.daubai h1{font-family:'Literata',serif;font-weight:800;font-size:clamp(1.9rem,4.4vw,2.9rem);line-height:1.2}
.daubai .meta{margin-top:22px;font-size:.87rem;color:var(--muc-nhat)}
.daubai .meta b{color:var(--muc);font-weight:600}
.daubai .duong-than{max-width:220px;margin:30px auto 0;animation:hoitho 8s ease-in-out infinite}
.anh-dai-dien{max-width:900px;margin:36px auto 0;padding:0 24px}
.anh-dai-dien img{width:100%;border-radius:18px}
.anh-dai-dien figcaption{margin-top:12px;text-align:center;font-size:.82rem;color:var(--muc-nhat)}

.than-bai{max-width:680px;margin:44px auto 0;padding:0 24px;font-family:'Literata',serif;font-size:1.13rem;line-height:1.85;color:#2E2A24}
.than-bai>p{margin-bottom:1.6em}
.than-bai>p:first-of-type::first-letter{font-weight:800;font-size:3.3em;line-height:.85;float:left;padding:6px 12px 0 0;color:var(--che)}
.than-bai h2{font-weight:700;font-size:1.42rem;margin:2.1em 0 .8em}
.than-bai h2::before{content:"";display:block;width:44px;height:3px;margin-bottom:14px;background:linear-gradient(90deg,var(--than-hong),#FFB088);border-radius:2px}
.than-bai h3{font-weight:700;font-size:1.2rem;margin:1.8em 0 .7em}
.than-bai blockquote{margin:2.1em 0;padding:6px 0 6px 26px;border-left:3px solid var(--than-hong);font-size:1.28rem;font-style:italic;line-height:1.6;color:var(--muc)}
.than-bai blockquote cite{display:block;margin-top:10px;font-family:'Be Vietnam Pro',sans-serif;font-style:normal;font-size:.85rem;color:var(--muc-nhat)}
.than-bai figure{margin:2.3em 0}
.than-bai figure img{border-radius:14px}
.than-bai figcaption{margin-top:10px;font-family:'Be Vietnam Pro',sans-serif;font-size:.82rem;color:var(--muc-nhat);text-align:center}
.than-bai ul,.than-bai ol{margin:0 0 1.6em 1.4em}
.than-bai a{color:var(--che)}

.ketbai{max-width:680px;margin:48px auto 0;padding:0 24px}
.the-va-chiase{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;padding-top:24px;border-top:1px solid var(--vien)}
.the-bai-viet{display:flex;gap:8px;flex-wrap:wrap}
.the-bai-viet a{text-decoration:none;font-size:.8rem;font-weight:500;color:var(--che);background:var(--non-che);padding:6px 13px;border-radius:999px}
.chiase{display:flex;gap:8px;align-items:center;font-size:.85rem;color:var(--muc-nhat);flex-wrap:wrap}
.chiase a{text-decoration:none;font-size:.82rem;font-weight:600;color:var(--che);border:1.5px solid var(--che);padding:6px 14px;border-radius:999px}
.chiase a:hover{background:var(--non-che)}

.tacgia{max-width:680px;margin:40px auto 0;padding:0 24px}
.tacgia .hop{display:grid;grid-template-columns:92px 1fr;gap:22px;align-items:center;background:var(--non-che);border-radius:16px;padding:24px 26px}
.tacgia .mat img{width:92px;height:92px;border-radius:50%;object-fit:cover}
.tacgia h3{font-family:'Literata',serif;font-weight:700;font-size:1.06rem;margin-bottom:6px}
.tacgia p{font-size:.9rem;color:#3E4A38}

.lienquan{max-width:1080px;margin:64px auto 0;padding:0 24px}

/* ===== Nhận bài mới ===== */
.thu{max-width:1080px;margin:64px auto 72px;padding:0 24px}
.thu .trong{text-align:center;padding:48px 24px;border:1.5px dashed var(--che);border-radius:20px;background:var(--trang)}
.thu h2{font-family:'Literata',serif;font-weight:800;font-size:1.5rem}
.thu p{color:var(--muc-nhat);margin:10px auto 22px;max-width:48ch}
.thu .khu-form input[type=email],.thu .khu-form input[type=text]{padding:12px 18px;border:1.5px solid var(--vien);border-radius:999px;min-width:260px;font-family:inherit;font-size:.95rem;background:var(--giay)}
.thu .khu-form input[type=submit],.thu .khu-form button{padding:12px 26px;border:none;border-radius:999px;background:var(--che);color:#fff;font-family:inherit;font-weight:600;font-size:.95rem;cursor:pointer}

/* ===== Trang tĩnh ===== */
.trang-tinh{max-width:760px;margin:0 auto;padding:56px 24px 40px}
.trang-tinh h1.tieude{font-family:'Literata',serif;font-weight:800;font-size:2.2rem;margin-bottom:26px}

/* ===== Archive ===== */
.dau-archive{padding:52px 0 6px}
.dau-archive .nhan{display:inline-block;font-size:.8rem;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:var(--che);margin-bottom:10px}
.dau-archive h1{font-family:'Literata',serif;font-weight:800;font-size:2rem}
.dau-archive p{margin-top:12px;color:var(--muc-nhat);max-width:70ch}

/* ===== Phân trang ===== */
.phan-trang{display:flex;gap:8px;justify-content:center;margin:48px 0;flex-wrap:wrap}
.phan-trang a,.phan-trang span{padding:8px 16px;border:1.5px solid var(--vien);border-radius:999px;text-decoration:none;color:var(--muc);font-size:.9rem;background:var(--trang)}
.phan-trang .current{background:var(--che);color:#fff;border-color:var(--che)}

/* ===== Footer ===== */
.site-footer{border-top:1px solid var(--vien);padding:32px 0 44px;background:#F1EEE4;margin-top:56px}
.chan{display:flex;justify-content:space-between;align-items:center;gap:20px;flex-wrap:wrap}
.chan .trai{display:flex;align-items:center;gap:10px;font-family:'Literata',serif;font-weight:700;text-transform:uppercase}
.chan .lua{width:8px;height:8px;border-radius:50%;background:radial-gradient(circle at 35% 35%,#FFB088,var(--than-hong) 60%,#B23A16);box-shadow:0 0 8px 2px rgba(228,87,46,.5)}
.chan .phai{font-size:.85rem;color:var(--muc-nhat);text-align:right}
.chan a{color:var(--che);text-decoration:none;font-weight:500}

/* ===== Mobile ===== */
@media (max-width:900px){
  .balua .luoi,.luoi-bai{grid-template-columns:1fr}
  .tacgia .hop{grid-template-columns:1fr;text-align:center;justify-items:center}
  .than-bai{font-size:1.07rem}
  .chan{flex-direction:column;text-align:center}
  .chan .phai{text-align:center}
}
@media (prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important}#tiendo{transition:none}}

/* ==== Form bản tin MailPoet: chỉnh theo tông giấy dó ==== */
.khu-form .mailpoet_form{padding:0;margin:0}
.khu-form .mailpoet_paragraph{margin:0 0 12px}
.khu-form input[type=email],.khu-form input[type=text]{width:100%;max-width:420px;padding:12px 16px;border:1.5px solid var(--vien,#BEB8AA);border-radius:10px;background:#fff;font-family:'Be Vietnam Pro',sans-serif;font-size:1rem;color:var(--muc)}
.khu-form input[type=email]:focus,.khu-form input[type=text]:focus{outline:none;border-color:var(--than-hong)}
.khu-form input[type=submit],.khu-form .mailpoet_submit{background:var(--than-hong);color:#fff;border:none;border-radius:10px;padding:12px 28px;font-family:'Be Vietnam Pro',sans-serif;font-weight:600;font-size:1rem;cursor:pointer;transition:opacity .2s}
.khu-form input[type=submit]:hover,.khu-form .mailpoet_submit:hover{opacity:.85}
.khu-form .mailpoet_validate_success{color:var(--che);font-weight:600}
.khu-form .mailpoet_validate_error{color:#B03A1E}

/* ==== Khung bản tin: lời mời dài ==== */
.thu p{max-width:62ch}
.thu p.loi-moi{margin:18px auto 20px;font-size:1.05rem;color:var(--muc)}
.thu p.ghi-chu{font-size:.85rem;color:var(--muc-nhat);margin:16px auto 0;max-width:52ch}