/* =========================================
   SixLetterWords – Main Stylesheet
   Font: Poppins | Design: Clean & Modern
   ========================================= */

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --primary-light: #dbeafe;
  --accent: #f59e0b;
  --accent-light: #fef3c7;
  --bg: #f8fafc;
  --bg-white: #ffffff;
  --surface: #ffffff;
  --border: #e2e8f0;
  --text: #0f172a;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  --hero-bg: #1e3a8a;
  --hero-text: #ffffff;
  --success: #10b981;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow-sm: 0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow: 0 4px 16px rgba(0,0,0,.08), 0 2px 6px rgba(0,0,0,.05);
  --shadow-lg: 0 20px 48px rgba(0,0,0,.12), 0 8px 20px rgba(0,0,0,.06);
  --font: 'Poppins', sans-serif;
  --transition: 0.22s ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

/* ---- Layout ---- */
.container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ---- Header ---- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--bg-white);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: 24px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
  flex-shrink: 0;
}

.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  background: var(--primary);
  color: #fff;
  border-radius: 10px;
  font-size: 1.2rem;
  font-weight: 900;
  letter-spacing: -1px;
}

.logo-text { color: var(--text); }

.main-nav ul {
  list-style: none;
  display: flex;
  gap: 4px;
}

.main-nav a {
  display: block;
  padding: 8px 16px;
  text-decoration: none;
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
  border-radius: 8px;
  transition: background var(--transition), color var(--transition);
}

.main-nav a:hover,
.main-nav a.active {
  background: var(--primary-light);
  color: var(--primary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: var(--transition);
}

/* ---- Hero ---- */
.hero {
  background: var(--hero-bg);
  background-image: radial-gradient(ellipse at 20% 50%, #1d4ed8 0%, #1e3a8a 60%, #0f1f5e 100%);
  position: relative;
  padding: 72px 0 80px;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 80% 20%, rgba(96,165,250,0.15) 0%, transparent 50%),
                    radial-gradient(circle at 10% 80%, rgba(245,158,11,0.1) 0%, transparent 40%);
}

.hero-inner {
  position: relative;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  color: #bfdbfe;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 20px;
}

.hero-title {
  font-size: clamp(2rem, 5vw, 3.4rem);
  font-weight: 800;
  color: #ffffff;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 18px;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: #bfdbfe;
  max-width: 620px;
  margin: 0 auto;
  font-weight: 400;
  line-height: 1.7;
}

.hero-wave {
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  line-height: 0;
}
.hero-wave svg { width: 100%; height: 50px; }

/* ---- Tool Section ---- */
.tool-section {
  padding: 56px 0 64px;
}

.tool-card {
  background: var(--surface);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  padding: 40px;
  margin-bottom: 48px;
}

.tool-header {
  text-align: center;
  margin-bottom: 32px;
}

.tool-header h2 {
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.tool-header p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.tool-header em {
  color: var(--primary);
  font-style: normal;
  font-weight: 600;
}

/* Input Area */
.input-area { max-width: 680px; margin: 0 auto; }

.input-group {
  display: flex;
  gap: 12px;
  margin-bottom: 14px;
}

.input-group input {
  flex: 1;
  padding: 16px 20px;
  font-family: var(--font);
  font-size: 1.1rem;
  font-weight: 500;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg);
  color: var(--text);
  outline: none;
  letter-spacing: 0.05em;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.input-group input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(37,99,235,0.1);
  background: #fff;
}

.input-group input::placeholder { color: var(--text-light); font-weight: 400; }

.btn-find {
  padding: 16px 28px;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 4px 14px rgba(37,99,235,0.35);
}

.btn-find:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(37,99,235,0.45);
}

.btn-find:active { transform: translateY(0); }

.input-options {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.option-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-weight: 500;
}

.option-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--primary);
  cursor: pointer;
}

.btn-clear {
  background: none;
  border: none;
  color: var(--text-light);
  font-family: var(--font);
  font-size: 0.88rem;
  cursor: pointer;
  padding: 4px 10px;
  border-radius: 6px;
  transition: color var(--transition), background var(--transition);
}
.btn-clear:hover { color: #ef4444; background: #fee2e2; }

/* Results */
.results-area {
  margin-top: 32px;
  border-top: 1px solid var(--border);
  padding-top: 28px;
  min-height: 120px;
}

.results-placeholder {
  text-align: center;
  color: var(--text-light);
  padding: 20px;
}

.placeholder-icon { font-size: 2.5rem; margin-bottom: 12px; }

.results-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 20px;
  flex-wrap: wrap;
  gap: 8px;
}

.results-count {
  font-weight: 700;
  font-size: 1rem;
  color: var(--text);
}

.results-count span { color: var(--primary); }

.results-sort {
  display: flex;
  gap: 6px;
}

.sort-btn {
  padding: 5px 12px;
  font-family: var(--font);
  font-size: 0.8rem;
  font-weight: 600;
  border: 1px solid var(--border);
  background: var(--bg);
  border-radius: 6px;
  cursor: pointer;
  color: var(--text-muted);
  transition: all var(--transition);
}

.sort-btn.active,
.sort-btn:hover {
  background: var(--primary);
  color: #fff;
  border-color: var(--primary);
}

.word-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
}

.word-chip {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px 14px;
  background: var(--primary-light);
  color: var(--primary-dark);
  border-radius: 10px;
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  border: 1px solid rgba(37,99,235,0.15);
  transition: all var(--transition);
  cursor: default;
  animation: popIn 0.2s ease both;
}

.word-chip:hover {
  background: var(--primary);
  color: #fff;
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(37,99,235,0.3);
}

@keyframes popIn {
  from { opacity: 0; transform: scale(0.85); }
  to   { opacity: 1; transform: scale(1); }
}

.no-results {
  text-align: center;
  padding: 32px;
  color: var(--text-muted);
}

.no-results strong { display: block; font-size: 1.1rem; margin-bottom: 8px; color: var(--text); }

/* Info Grid */
.info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.info-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition), transform var(--transition);
}

.info-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-3px);
}

.info-icon { font-size: 2rem; margin-bottom: 12px; }

.info-card h3 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--text);
}

.info-card p {
  color: var(--text-muted);
  font-size: 0.92rem;
  line-height: 1.65;
}

/* About Section */
.about-section {
  background: var(--surface);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 72px 0;
}

.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.about-text h2 {
  font-size: 1.8rem;
  font-weight: 800;
  margin-bottom: 18px;
  line-height: 1.3;
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 16px;
  line-height: 1.75;
  font-size: 0.97rem;
}

.about-text strong { color: var(--primary); font-weight: 600; }
.about-text em { color: var(--text); font-style: normal; font-weight: 600; }

.btn-secondary {
  display: inline-block;
  margin-top: 8px;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: gap var(--transition);
}

.btn-secondary:hover { text-decoration: underline; }

.about-stats {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.stat-box {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px 28px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.stat-box:hover {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37,99,235,0.08);
}

.stat-number {
  font-size: 2rem;
  font-weight: 900;
  color: var(--primary);
  line-height: 1;
}

.stat-label {
  font-size: 0.88rem;
  color: var(--text-muted);
  font-weight: 500;
}

/* Blog Preview Section */
.blog-preview-section {
  padding: 72px 0;
}

.section-head {
  text-align: center;
  margin-bottom: 40px;
}

.section-head h2 {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 8px;
}

.section-head p {
  color: var(--text-muted);
  font-size: 1rem;
}

.blog-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 36px;
}

.blog-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: box-shadow var(--transition), transform var(--transition);
}

.blog-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.blog-card-tag {
  display: inline-block;
  background: var(--accent-light);
  color: #92400e;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 50px;
  width: fit-content;
}

.blog-card h3 {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
}

.blog-card h3 a {
  text-decoration: none;
  color: var(--text);
  transition: color var(--transition);
}

.blog-card h3 a:hover { color: var(--primary); }

.blog-card p {
  color: var(--text-muted);
  font-size: 0.88rem;
  line-height: 1.65;
  flex: 1;
}

.read-more {
  color: var(--primary);
  font-weight: 600;
  font-size: 0.88rem;
  text-decoration: none;
  align-self: flex-start;
  transition: gap var(--transition);
}

.read-more:hover { text-decoration: underline; }

.blog-cta { text-align: center; }

.btn-primary {
  display: inline-block;
  background: var(--primary);
  color: #fff;
  padding: 14px 32px;
  border-radius: var(--radius);
  font-family: var(--font);
  font-weight: 600;
  font-size: 0.97rem;
  text-decoration: none;
  box-shadow: 0 4px 14px rgba(37,99,235,0.3);
  transition: background var(--transition), transform var(--transition), box-shadow var(--transition);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37,99,235,0.4);
}

/* Footer */
.site-footer {
  background: #0f172a;
  color: #94a3b8;
  padding: 56px 0 0;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-logo .logo { color: #fff; margin-bottom: 12px; display: flex; }
.footer-logo .logo-text { color: #e2e8f0; }
.footer-logo p { font-size: 0.88rem; line-height: 1.6; max-width: 280px; }

.footer-links {
  display: flex;
  gap: 48px;
  justify-content: flex-end;
}

.footer-col h4 {
  color: #e2e8f0;
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: 16px;
}

.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }

.footer-col a {
  color: #64748b;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color var(--transition);
}

.footer-col a:hover { color: #93c5fd; }

.footer-bottom {
  text-align: center;
  padding: 20px 24px;
  font-size: 0.82rem;
  color: #475569;
}

/* Blog Layout */
.blog-hero {
  background: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 100%);
  padding: 56px 0;
  text-align: center;
}

.blog-hero h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
}

.blog-hero p { color: #bfdbfe; font-size: 1rem; }

.blog-index-section { padding: 56px 0; }

.blog-index-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}

.blog-index-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  gap: 12px;
  transition: box-shadow var(--transition), transform var(--transition);
}

.blog-index-card:hover {
  box-shadow: var(--shadow);
  transform: translateY(-4px);
}

.blog-index-card h2 { font-size: 1.15rem; font-weight: 700; line-height: 1.4; }
.blog-index-card h2 a { text-decoration: none; color: var(--text); transition: color var(--transition); }
.blog-index-card h2 a:hover { color: var(--primary); }
.blog-index-card p { color: var(--text-muted); font-size: 0.9rem; line-height: 1.65; flex: 1; }

.blog-cta-box {
  background: var(--primary-light);
  border: 1px solid rgba(37,99,235,0.2);
  border-radius: var(--radius-lg);
  padding: 36px 40px;
  text-align: center;
  margin-top: 56px;
}

.blog-cta-box h3 { font-size: 1.3rem; font-weight: 700; margin-bottom: 10px; }
.blog-cta-box p { color: var(--text-muted); margin-bottom: 20px; font-size: 0.95rem; }

/* Blog Post Page */
.post-hero {
  background: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 100%);
  padding: 56px 0 64px;
}

.post-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  font-size: 0.85rem;
}

.post-breadcrumb a { color: #93c5fd; text-decoration: none; }
.post-breadcrumb a:hover { text-decoration: underline; }
.post-breadcrumb span { color: #bfdbfe; }
.post-breadcrumb .sep { color: #4b6cb7; }

.post-hero-tag {
  display: inline-block;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.2);
  color: #bfdbfe;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 5px 14px;
  border-radius: 50px;
  margin-bottom: 16px;
}

.post-hero h1 {
  font-size: clamp(1.7rem, 4vw, 2.6rem);
  font-weight: 800;
  color: #fff;
  line-height: 1.2;
  max-width: 760px;
  letter-spacing: -0.02em;
}

.post-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.post-meta span {
  color: #93c5fd;
  font-size: 0.88rem;
  font-weight: 500;
}

.post-layout {
  padding: 56px 0 72px;
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 48px;
  align-items: start;
}

.post-content {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 48px;
  box-shadow: var(--shadow-sm);
}

.post-content h2 {
  font-size: 1.45rem;
  font-weight: 700;
  margin: 36px 0 14px;
  color: var(--text);
  line-height: 1.3;
}

.post-content h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 28px 0 10px;
  color: var(--text);
}

.post-content p {
  color: var(--text-muted);
  line-height: 1.8;
  margin-bottom: 18px;
  font-size: 0.97rem;
}

.post-content ul, .post-content ol {
  color: var(--text-muted);
  margin: 0 0 20px 20px;
  font-size: 0.97rem;
  line-height: 1.8;
}

.post-content li { margin-bottom: 6px; }

.post-content strong { color: var(--text); font-weight: 600; }

.post-content .placeholder-block {
  background: var(--bg);
  border: 2px dashed var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  margin: 24px 0;
  color: var(--text-light);
  font-size: 0.9rem;
  font-style: italic;
  text-align: center;
}

.post-content .cta-inline {
  background: var(--primary-light);
  border: 1px solid rgba(37,99,235,0.2);
  border-radius: var(--radius);
  padding: 24px;
  margin: 28px 0;
  text-align: center;
}

.post-content .cta-inline p {
  font-weight: 600;
  color: var(--text);
  margin-bottom: 12px;
}

/* Sidebar */
.post-sidebar { display: flex; flex-direction: column; gap: 24px; }

.sidebar-widget {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
}

.sidebar-widget h3 {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 16px;
  padding-bottom: 12px;
  border-bottom: 1px solid var(--border);
}

.sidebar-tool-cta {
  background: var(--primary);
  color: #fff;
  border: none;
}

.sidebar-tool-cta h3 { color: rgba(255,255,255,0.7); border-bottom-color: rgba(255,255,255,0.15); }
.sidebar-tool-cta p { color: rgba(255,255,255,0.85); font-size: 0.9rem; margin-bottom: 16px; }

.btn-white {
  display: block;
  text-align: center;
  background: #fff;
  color: var(--primary);
  padding: 12px 20px;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  transition: transform var(--transition), box-shadow var(--transition);
  box-shadow: 0 2px 8px rgba(0,0,0,0.15);
}

.btn-white:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 16px rgba(0,0,0,0.2);
}

.related-post-list { list-style: none; display: flex; flex-direction: column; gap: 12px; }

.related-post-list li a {
  color: var(--text);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  line-height: 1.4;
  transition: color var(--transition);
  display: block;
  padding: 8px 10px;
  border-radius: 8px;
}

.related-post-list li a:hover {
  color: var(--primary);
  background: var(--primary-light);
}

/* Responsive */
@media (max-width: 1024px) {
  .post-layout { grid-template-columns: 1fr; }
  .post-sidebar { order: -1; display: grid; grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .info-grid { grid-template-columns: 1fr; }
  .about-inner { grid-template-columns: 1fr; gap: 36px; }
  .blog-cards { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; gap: 32px; }
  .footer-links { justify-content: flex-start; }
  .input-group { flex-direction: column; }
  .btn-find { width: 100%; }
  .tool-card { padding: 28px 20px; }
  .post-content { padding: 28px 20px; }
  .post-sidebar { grid-template-columns: 1fr; }

  .main-nav {
    display: none;
    position: absolute;
    top: 68px;
    left: 0; right: 0;
    background: var(--bg-white);
    border-top: 1px solid var(--border);
    box-shadow: var(--shadow);
    padding: 12px;
  }
  .main-nav.open { display: block; }
  .main-nav ul { flex-direction: column; }
  .nav-toggle { display: flex; }
}

@media (max-width: 480px) {
  .word-grid { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); }
  .blog-index-grid { grid-template-columns: 1fr; }
}