/* ==========================================================================
   E-MAGAZINE BÁO KINH TẾ: VÒNG TRÒN KHÉP KÍN HTX SÁNG NHUNG
   Thiết kế cao cấp, tối giản, giàu tính dữ liệu (Data Journalism)
   100% Responsive cho mọi thiết bị di động & màn hình chuẩn báo chí
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Merriweather:ital,wght@0,300;0,400;0,700;0,900;1,300;1,400;1,700&family=Plus+Jakarta+Sans:ital,wght@0,400;0,500;0,600;0,700;0,800;1,400;1,500;1,600&family=Space+Grotesk:wght@600;700;800&display=swap');

:root {
  /* Bảng màu chuẩn báo chí kinh tế xanh */
  --bg-primary: #fbfbfa;
  --bg-surface: #ffffff;
  --bg-card: #f4f6f4;
  --bg-accent-soft: #edf5f0;
  --bg-gold-soft: #fcf6eb;

  --color-primary: #0d5236;
  --color-primary-dark: #072e1e;
  --color-primary-light: #166534;
  --color-emerald: #10b981;
  
  --color-earth: #9a6519;
  --color-earth-light: #d97706;
  --color-earth-dark: #78350f;

  --text-main: #111827;
  --text-body: #28332e;
  --text-muted: #52635c;
  --text-light: #7c8e87;

  --border-subtle: #e2e8e2;
  --border-strong: #c8d6cc;
  --border-accent: #a7f3d0;

  /* Typography Scale */
  --font-serif: 'Merriweather', 'Times New Roman', Georgia, serif;
  --font-sans: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'Space Grotesk', ui-monospace, monospace;

  --font-size-base: 18.5px;
  --line-height-base: 1.8;
  
  --max-text-width: 740px;
  --max-content-width: 1160px;
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 2px 8px rgba(13, 82, 54, 0.04);
  --shadow-md: 0 8px 24px rgba(13, 82, 54, 0.07);
  --shadow-lg: 0 16px 36px rgba(13, 82, 54, 0.1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  background-color: var(--bg-primary);
  color: var(--text-main);
  text-rendering: optimizeLegibility;
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--text-body);
  background-color: var(--bg-primary);
  overflow-x: hidden;
  position: relative;
  width: 100%;
  padding-bottom: env(safe-area-inset-bottom);
}

/* Thanh tiến trình đọc tinh tế */
#reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  height: 3.5px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-emerald), var(--color-earth-light));
  width: 0%;
  z-index: 1000;
  transition: width 0.1s linear;
}

/* Layout container */
.container {
  width: 100%;
  max-width: var(--max-content-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(16px, 4vw, 24px);
  padding-right: clamp(16px, 4vw, 24px);
}

.article-container {
  max-width: var(--max-text-width);
  margin-left: auto;
  margin-right: auto;
}

/* ==========================================================================
   1. TITLE / MỞ ĐẦU (Tối giản, Sang trọng, Typography)
   ========================================================================== */
.header-emagazine {
  padding-top: clamp(32px, 6vw, 60px);
  padding-bottom: clamp(28px, 5vw, 48px);
  border-bottom: 1px solid var(--border-subtle);
  background: radial-gradient(circle at 50% 0%, rgba(21, 128, 61, 0.05) 0%, transparent 70%);
  position: relative;
}

.kicker-wrapper {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: clamp(16px, 3.5vw, 24px);
  flex-wrap: wrap;
}

.kicker-tag {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: clamp(11.5px, 2.7vw, 13px);
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-primary);
  background-color: var(--bg-accent-soft);
  padding: 6px 14px;
  border-radius: 6px;
  border: 1px solid var(--border-accent);
  line-height: 1.45;
  max-width: 100%;
}

.main-title {
  font-family: var(--font-serif);
  font-size: clamp(1.85rem, 5.2vw, 3.4rem);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-primary-dark);
  letter-spacing: -0.02em;
  margin-bottom: clamp(18px, 3.5vw, 28px);
  word-break: break-word;
}

.desktop-br {
  display: inline;
}

/* ==========================================================================
   NỘI DUNG VĂN BẢN (Text Styling)
   ========================================================================== */
.article-body {
  padding-top: clamp(28px, 5vw, 48px);
  padding-bottom: clamp(48px, 8vw, 80px);
}

.text-paragraph {
  font-size: clamp(17px, 1.15vw, 19px);
  line-height: var(--line-height-base);
  color: var(--text-body);
  margin-bottom: clamp(20px, 3.5vw, 26px);
  text-align: justify;
  word-break: normal;
}

/* Đoạn mở đầu nổi bật (Lead Paragraph) */
.lead-paragraph {
  font-size: clamp(1.1rem, 2.6vw, 1.28rem);
  line-height: 1.76;
  color: var(--color-primary-dark);
  font-weight: 500;
  margin-bottom: clamp(24px, 4vw, 32px);
  padding: 16px 20px;
  background: rgba(13, 82, 54, 0.03);
  border-left: 4px solid var(--color-primary);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}

/* Section Headings */
.section-heading-wrapper {
  margin-top: clamp(42px, 7vw, 64px);
  margin-bottom: clamp(20px, 4vw, 30px);
  position: relative;
}

.section-tag {
  font-size: clamp(11.5px, 2.5vw, 13px);
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-earth-dark);
  margin-bottom: 8px;
  display: block;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 4vw, 2.3rem);
  font-weight: 700;
  line-height: 1.28;
  color: var(--color-primary-dark);
  letter-spacing: -0.01em;
  padding-bottom: 14px;
  border-bottom: 2px solid var(--border-subtle);
  position: relative;
  word-break: break-word;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 72px;
  height: 2px;
  background-color: var(--color-primary);
}

.quote-highlight {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-left: 4px solid var(--color-earth-light);
  padding: clamp(18px, 4vw, 24px) clamp(16px, 4vw, 28px);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: clamp(28px, 5vw, 38px) 0;
  box-shadow: var(--shadow-sm);
}

.quote-highlight p {
  font-size: clamp(1.05rem, 2.4vw, 1.16rem);
  line-height: 1.72;
  color: var(--text-main);
  font-style: italic;
  font-weight: 500;
  margin: 0;
}

/* ==========================================================================
   ẢNH MINH HỌA CHUYÊN NGHIỆP
   ========================================================================== */
.editorial-figure {
  margin: clamp(32px, 6vw, 48px) 0;
  width: 100%;
}

.figure-wrapper {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  background-color: #000;
  position: relative;
  border: 1px solid var(--border-subtle);
}

.figure-image {
  width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.figure-wrapper:hover .figure-image {
  transform: scale(1.015);
}

/* ==========================================================================
   INFOGRAPHIC 01: HỆ SINH THÁI SẢN XUẤT TRÊN 20 HA
   ========================================================================== */
.infographic-block {
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: clamp(14px, 3vw, 22px);
  padding: clamp(22px, 4vw, 38px) clamp(14px, 3.5vw, 32px);
  margin: clamp(36px, 6vw, 54px) 0;
  box-shadow: var(--shadow-md);
  position: relative;
  overflow: hidden;
}

.infographic-block::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 5px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-emerald), var(--color-earth));
}

.info-header {
  text-align: center;
  margin-bottom: clamp(20px, 4vw, 32px);
}

.info-title {
  font-family: var(--font-sans);
  font-size: clamp(1.25rem, 3.6vw, 1.85rem);
  font-weight: 800;
  color: var(--color-primary-dark);
  text-transform: uppercase;
  letter-spacing: 0.01em;
  line-height: 1.35;
}

/* 1. Bản đồ phân bổ diện tích 20 ha */
.land-allocation-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: clamp(10px, 2vw, 16px);
  margin-bottom: clamp(20px, 3.5vw, 32px);
}

.land-card {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: clamp(14px, 2.5vw, 20px) clamp(10px, 2vw, 16px);
  text-align: center;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.land-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  background-color: #ffffff;
}

.land-icon-box {
  width: clamp(38px, 6.5vw, 48px);
  height: clamp(38px, 6.5vw, 48px);
  margin: 0 auto clamp(6px, 1.5vw, 12px);
  border-radius: 10px;
  background-color: var(--bg-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-subtle);
  flex-shrink: 0;
}

.land-icon-box svg {
  width: clamp(20px, 4vw, 26px);
  height: clamp(20px, 4vw, 26px);
}

.land-stat-val {
  font-family: var(--font-sans);
  font-size: clamp(20px, 4vw, 26px);
  font-weight: 800;
  color: var(--color-primary-dark);
  line-height: 1.15;
  margin-bottom: 4px;
}

.land-stat-label {
  font-size: clamp(13.5px, 2.8vw, 17px);
  font-weight: 600;
  color: var(--text-main);
  line-height: 1.35;
}

/* 2. Tổng quy mô 20ha banner */
.land-total-banner {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-dark));
  color: #ffffff;
  border-radius: var(--radius-md);
  padding: clamp(14px, 3vw, 18px) clamp(16px, 3.5vw, 24px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-bottom: clamp(20px, 3.5vw, 32px);
  box-shadow: var(--shadow-sm);
  flex-wrap: wrap;
}

.total-title-group {
  display: flex;
  align-items: center;
  gap: clamp(10px, 2.5vw, 14px);
  flex: 1 1 auto;
}

.total-title-group svg {
  width: clamp(24px, 4.5vw, 32px);
  height: clamp(24px, 4.5vw, 32px);
  color: #86efac;
  flex-shrink: 0;
}

.total-text-main {
  font-size: clamp(15.5px, 3vw, 19.5px);
  font-weight: 700;
  line-height: 1.35;
}

.total-val-badge {
  font-size: clamp(19px, 4vw, 26px);
  font-weight: 800;
  background: rgba(255, 255, 255, 0.2);
  padding: 6px clamp(12px, 2.5vw, 18px);
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.35);
  white-space: nowrap;
  flex-shrink: 0;
}

/* 3. Grid chỉ số sản xuất chăn nuôi */
.kpi-section-title {
  font-size: clamp(16px, 3.2vw, 19px);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 10px;
}

.kpi-section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background-color: var(--border-subtle);
}

.kpi-metric-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(14px, 2.5vw, 20px);
  margin-bottom: 24px;
}

.metric-card-group {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: clamp(16px, 3vw, 22px) clamp(14px, 2.5vw, 20px);
  box-shadow: var(--shadow-sm);
}

.metric-card-group.pork {
  border-left: 4px solid var(--color-primary);
}

.metric-card-group.poultry {
  border-left: 4px solid var(--color-earth);
}

.metric-card-group.feed {
  border-left: 4px solid #0284c7;
}

.metric-card-group.quality {
  border-left: 4px solid #7c3aed;
}

.metric-group-header {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: clamp(16px, 3.2vw, 18.5px);
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 14px;
  padding-bottom: 10px;
  border-bottom: 1px solid var(--border-subtle);
}

.metric-group-header svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.metric-subgrid {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.metric-subitem {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  padding: 5px 0;
  border-bottom: 1px dashed var(--border-subtle);
}

.metric-subitem:last-child {
  border-bottom: none;
}

.metric-sub-label {
  font-size: clamp(14px, 2.8vw, 17px);
  color: var(--text-body);
  font-weight: 500;
  line-height: 1.4;
  flex: 1 1 auto;
}

.metric-sub-num {
  font-family: var(--font-sans);
  font-size: clamp(16px, 3.6vw, 20px);
  font-weight: 800;
  color: var(--color-primary-dark);
  text-align: right;
  white-space: nowrap;
  flex-shrink: 0;
}

/* ==========================================================================
   INFOGRAPHIC 02: VÒNG TRÒN KINH TẾ TUẦN HOÀN SÁNG NHUNG
   ========================================================================== */
.circular-core-box {
  background: linear-gradient(135deg, var(--bg-accent-soft), var(--bg-gold-soft));
  border: 2px dashed var(--color-primary);
  border-radius: var(--radius-md);
  padding: clamp(16px, 3vw, 22px) clamp(14px, 3vw, 24px);
  text-align: center;
  margin: clamp(18px, 3.5vw, 24px) 0;
}

.circular-core-title {
  font-size: clamp(15px, 3vw, 19px);
  font-weight: 800;
  color: var(--color-primary-dark);
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.circular-core-flow {
  display: flex;
  align-items: center;
  justify-content: center;
  flex-wrap: wrap;
  gap: 8px 10px;
}

.flow-pill {
  display: inline-flex;
  align-items: center;
  padding: 6px 14px;
  background: var(--bg-surface);
  border: 1px solid var(--border-strong);
  border-radius: 20px;
  font-size: clamp(13.5px, 2.8vw, 16px);
  font-weight: 700;
  color: var(--color-primary-dark);
  box-shadow: var(--shadow-sm);
}

.flow-pill.highlight {
  background: var(--color-primary);
  color: #ffffff;
  border-color: var(--color-primary-dark);
}

.flow-arrow {
  color: var(--color-emerald);
  font-weight: 800;
  font-size: clamp(16px, 3.5vw, 19px);
}

.circular-diagram-container {
  background: radial-gradient(circle at center, #ffffff 40%, var(--bg-card) 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: clamp(18px, 3.5vw, 32px) clamp(14px, 3vw, 24px);
  margin-bottom: clamp(24px, 4vw, 32px);
}

.cycle-steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(12px, 2.5vw, 16px);
}

.cycle-node-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: clamp(16px, 3vw, 20px) clamp(14px, 2.5vw, 18px);
  position: relative;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.cycle-node-card:hover {
  transform: translateY(-3px);
  border-color: var(--color-primary);
  box-shadow: var(--shadow-md);
}

.cycle-node-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.node-number {
  width: clamp(28px, 5.5vw, 32px);
  height: clamp(28px, 5.5vw, 32px);
  background-color: var(--color-primary);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: clamp(14px, 3vw, 16px);
  font-weight: 800;
  flex-shrink: 0;
  box-shadow: 0 2px 6px rgba(13, 82, 54, 0.25);
}

.node-title {
  font-size: clamp(15.5px, 3.2vw, 18.5px);
  font-weight: 700;
  color: var(--color-primary-dark);
  line-height: 1.3;
}

.node-desc {
  font-size: clamp(14px, 2.8vw, 16.5px);
  color: var(--text-body);
  line-height: 1.5;
}

/* Grid KPI Kinh tế tuần hoàn */
.circular-kpi-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(10px, 2.5vw, 16px);
}

.circular-kpi-item {
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: clamp(14px, 2.5vw, 20px) clamp(10px, 2vw, 16px);
  text-align: center;
  transition: all 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.circular-kpi-item:hover {
  background: #ffffff;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.kpi-big-number {
  font-family: var(--font-sans);
  font-size: clamp(18px, 4vw, 25px);
  font-weight: 800;
  color: var(--color-primary-dark);
  margin-bottom: 4px;
  line-height: 1.2;
  word-break: break-word;
}

.kpi-big-number.earth {
  color: var(--color-earth-dark);
}

.kpi-desc-label {
  font-size: clamp(13px, 2.8vw, 16px);
  font-weight: 600;
  color: var(--text-body);
  line-height: 1.35;
}

/* ==========================================================================
   NÚT QUAY LẠI ĐẦU TRANG (Back To Top Floating Button)
   ========================================================================== */
.back-to-top-btn {
  position: fixed;
  bottom: clamp(20px, 5vw, 32px);
  right: clamp(16px, 4vw, 28px);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background-color: var(--color-primary);
  color: #ffffff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(13, 82, 54, 0.3);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all 0.3s cubic-bezier(0.16, 1, 0.3, 1);
  z-index: 990;
}

.back-to-top-btn.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top-btn:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(13, 82, 54, 0.4);
}

.back-to-top-btn:active {
  transform: scale(0.92);
}

.back-to-top-btn svg {
  width: 22px;
  height: 22px;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.magazine-footer {
  margin-top: clamp(48px, 8vw, 80px);
  padding-top: clamp(28px, 5vw, 40px);
  padding-bottom: clamp(40px, 6vw, 60px);
  border-top: 2px solid var(--border-subtle);
  background-color: var(--bg-surface);
  text-align: center;
}

.footer-credits {
  font-size: clamp(14px, 2.8vw, 16px);
  color: var(--text-muted);
  line-height: 1.7;
}

.footer-brand {
  font-family: var(--font-serif);
  font-size: clamp(18px, 3.5vw, 22px);
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 6px;
}

/* ==========================================================================
   RESPONSIVE DESIGN BREAKPOINTS (Granular & Bulletproof)
   ========================================================================== */
@media (max-width: 992px) {
  .land-allocation-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .cycle-steps-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .circular-kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .desktop-br {
    display: none;
  }

  .text-paragraph {
    text-align: left;
  }

  .kpi-metric-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .cycle-steps-grid {
    grid-template-columns: 1fr;
    gap: 14px;
    position: relative;
  }

  .circular-kpi-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

  .land-total-banner {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }

  .total-title-group {
    justify-content: center;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding-left: 14px;
    padding-right: 14px;
  }

  .infographic-block {
    padding: 18px 12px;
    margin: 28px 0;
    border-radius: 14px;
  }

  .land-allocation-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .land-card {
    padding: 12px 8px;
  }

  .land-icon-box {
    width: 36px;
    height: 36px;
    margin-bottom: 6px;
  }

  .land-icon-box svg {
    width: 19px;
    height: 19px;
  }

  .metric-card-group {
    padding: 14px 12px;
  }

  .metric-subitem {
    gap: 6px;
  }

  .circular-diagram-container {
    padding: 16px 10px;
    border-radius: 14px;
  }

  .circular-kpi-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 8px;
  }

  .circular-kpi-item {
    padding: 12px 8px;
  }

  .circular-core-flow {
    gap: 6px;
    justify-content: center;
  }

  .flow-pill {
    padding: 5px 11px;
    font-size: 13px;
  }

  .flow-arrow {
    font-size: 15px;
  }

  .editorial-figure {
    margin: 24px 0;
  }

  .lead-paragraph {
    padding: 12px 14px;
  }
}

@media (max-width: 340px) {
  .land-allocation-grid {
    grid-template-columns: 1fr;
  }

  .circular-kpi-grid {
    grid-template-columns: 1fr;
  }
}