/* ============================================
   SmartHomeTriage.com — Main Stylesheet
   ============================================ */

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

:root {
  --clr-primary: #0f4c81;
  --clr-primary-light: #1a6bbf;
  --clr-accent: #00c896;
  --clr-accent-dark: #00a87c;
  --clr-dark: #0d1b2a;
  --clr-mid: #2c4a6e;
  --clr-text: #1a2332;
  --clr-muted: #5a6a7e;
  --clr-bg: #f5f7fa;
  --clr-white: #ffffff;
  --clr-border: #dde4ef;
  --clr-card-bg: #ffffff;
  --font-head: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 20px rgba(15,76,129,0.08);
  --shadow-hover: 0 8px 32px rgba(15,76,129,0.15);
  --transition: all 0.22s ease;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  color: var(--clr-text);
  background: var(--clr-bg);
  line-height: 1.6;
  font-size: 16px;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

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

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

/* ---- SITE HEADER ---- */
.site-header {
  background: var(--clr-white);
  border-bottom: 1px solid var(--clr-border);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 1px 12px rgba(15,76,129,0.06);
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  font-family: var(--font-head);
}

.logo-icon { font-size: 22px; }

.logo-text {
  font-size: 18px;
  font-weight: 600;
  color: var(--clr-dark);
  letter-spacing: -0.3px;
}

.logo-text strong {
  color: var(--clr-primary);
  font-weight: 800;
}

.main-nav {
  display: flex;
  gap: 4px;
}

.main-nav a {
  padding: 8px 16px;
  border-radius: 8px;
  color: var(--clr-muted);
  font-size: 15px;
  font-weight: 500;
}

.main-nav a:hover {
  background: var(--clr-bg);
  color: var(--clr-primary);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--clr-border);
  padding: 6px 12px;
  border-radius: 8px;
  cursor: pointer;
  font-size: 18px;
}

/* ---- HERO ---- */
.hero {
  background: linear-gradient(135deg, var(--clr-dark) 0%, var(--clr-mid) 50%, var(--clr-primary) 100%);
  color: white;
  padding: 80px 0 90px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(0,200,150,0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -5%;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(26,107,191,0.2) 0%, transparent 70%);
  pointer-events: none;
}

.hero .container { position: relative; z-index: 1; text-align: center; }

.hero-badge {
  display: inline-block;
  background: rgba(0,200,150,0.15);
  border: 1px solid rgba(0,200,150,0.4);
  color: var(--clr-accent);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.3px;
  margin-bottom: 24px;
}

.hero h1 {
  font-family: var(--font-head);
  font-size: clamp(32px, 5vw, 58px);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  color: white;
  margin-bottom: 20px;
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
}

.highlight {
  color: var(--clr-accent);
  position: relative;
}

.hero-sub {
  font-size: 18px;
  color: rgba(255,255,255,0.75);
  max-width: 620px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-cta {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.hero-stats {
  display: flex;
  gap: 48px;
  justify-content: center;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
}

.stat strong {
  font-family: var(--font-head);
  font-size: 28px;
  font-weight: 800;
  color: white;
}

.stat span {
  font-size: 13px;
  color: rgba(255,255,255,0.55);
  margin-top: 2px;
}

/* ---- BUTTONS ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 13px 28px;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  border: 2px solid transparent;
}

.btn-primary {
  background: var(--clr-accent);
  color: var(--clr-dark);
}

.btn-primary:hover {
  background: var(--clr-accent-dark);
  color: var(--clr-dark);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border-color: rgba(255,255,255,0.4);
  color: white;
}

.btn-outline:hover {
  background: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.7);
  color: white;
}

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

.btn-blue:hover {
  background: var(--clr-primary-light);
  color: white;
  transform: translateY(-1px);
}

/* ---- ADS ---- */
.ad-container {
  background: var(--clr-white);
  border-top: 1px solid var(--clr-border);
  border-bottom: 1px solid var(--clr-border);
  padding: 16px 0;
}

.ad-leaderboard { padding: 12px 0; }

.ad-center {
  display: flex;
  justify-content: center;
}

.ad-sidebar {
  position: sticky;
  top: 88px;
}

/* ---- TOOLS SECTION ---- */
.tools-section {
  padding: 80px 0;
}

.section-header {
  text-align: center;
  margin-bottom: 48px;
}

.section-header h2 {
  font-family: var(--font-head);
  font-size: clamp(26px, 3vw, 38px);
  font-weight: 800;
  color: var(--clr-dark);
  letter-spacing: -0.8px;
  margin-bottom: 12px;
}

.section-header p {
  color: var(--clr-muted);
  font-size: 17px;
}

.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 20px;
}

.tool-card {
  background: var(--clr-card-bg);
  border-radius: var(--radius-lg);
  border: 1.5px solid var(--clr-border);
  padding: 28px;
  display: flex;
  align-items: flex-start;
  gap: 20px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
  text-decoration: none;
  color: var(--clr-text);
}

.tool-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--card-accent, var(--clr-primary));
  opacity: 0;
  transition: var(--transition);
}

.tool-card:hover {
  border-color: var(--clr-primary);
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
  color: var(--clr-text);
}

.tool-card:hover::before { opacity: 1; }

.tool-card--wifi { --card-accent: #0f4c81; }
.tool-card--device { --card-accent: #6c3fc7; }
.tool-card--bulb { --card-accent: #f59e0b; }
.tool-card--thermo { --card-accent: #ef4444; }
.tool-card--camera { --card-accent: #3b82f6; }
.tool-card--auto { --card-accent: #10b981; }
.tool-card--compat { --card-accent: #8b5cf6; }
.tool-card--speed { --card-accent: #00c896; }
.tool-card--hub { --card-accent: #f97316; }

.tool-card__icon {
  font-size: 36px;
  flex-shrink: 0;
  width: 60px;
  height: 60px;
  background: var(--clr-bg);
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.tool-card__body { flex: 1; }

.tool-card__body h3 {
  font-family: var(--font-head);
  font-size: 18px;
  font-weight: 700;
  color: var(--clr-dark);
  margin-bottom: 8px;
}

.tool-card__body p {
  font-size: 14px;
  color: var(--clr-muted);
  line-height: 1.55;
  margin-bottom: 14px;
}

.tool-tags {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.tool-tags span {
  background: var(--clr-bg);
  color: var(--clr-muted);
  padding: 3px 10px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 500;
  border: 1px solid var(--clr-border);
}

.tool-card__arrow {
  color: var(--clr-muted);
  font-size: 20px;
  transition: var(--transition);
  flex-shrink: 0;
}

.tool-card:hover .tool-card__arrow {
  color: var(--clr-primary);
  transform: translateX(4px);
}

/* ---- HOW IT WORKS ---- */
.how-it-works {
  background: var(--clr-dark);
  padding: 80px 0;
  color: white;
}

.how-it-works .section-header h2 { color: white; }
.how-it-works .section-header p { color: rgba(255,255,255,0.6); }

.steps-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.step {
  text-align: center;
  padding: 32px 24px;
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.step:hover {
  border-color: var(--clr-accent);
  background: rgba(0,200,150,0.05);
}

.step-number {
  font-family: var(--font-head);
  font-size: 52px;
  font-weight: 800;
  color: var(--clr-accent);
  opacity: 0.3;
  line-height: 1;
  margin-bottom: 16px;
}

.step h3 {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  color: white;
  margin-bottom: 12px;
}

.step p { color: rgba(255,255,255,0.6); font-size: 15px; }

/* ---- FAQ ---- */
.faq-section {
  padding: 80px 0;
  background: var(--clr-white);
}

.faq-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.faq-item {
  background: var(--clr-bg);
  border-radius: var(--radius);
  padding: 28px;
  border: 1px solid var(--clr-border);
}

.faq-item h3 {
  font-family: var(--font-head);
  font-size: 17px;
  font-weight: 700;
  color: var(--clr-dark);
  margin-bottom: 10px;
  line-height: 1.35;
}

.faq-item p { font-size: 14px; color: var(--clr-muted); line-height: 1.65; }
.faq-item a { color: var(--clr-primary); font-weight: 500; }
.faq-item a:hover { color: var(--clr-accent-dark); }

/* ---- FOOTER ---- */
.site-footer {
  background: var(--clr-dark);
  color: rgba(255,255,255,0.7);
  padding: 64px 0 0;
}

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

.footer-brand .logo-text { color: white; }
.footer-brand .logo-text strong { color: var(--clr-accent); }
.footer-brand p { font-size: 14px; color: rgba(255,255,255,0.5); margin-top: 12px; line-height: 1.65; }

.footer-links h4 {
  font-family: var(--font-head);
  font-size: 14px;
  font-weight: 700;
  color: white;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 16px;
}

.footer-links ul { list-style: none; }
.footer-links ul li { margin-bottom: 10px; }
.footer-links ul a { color: rgba(255,255,255,0.5); font-size: 14px; }
.footer-links ul a:hover { color: var(--clr-accent); }

.footer-bottom {
  padding: 20px 0;
  text-align: center;
}

.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.35); }
.footer-bottom a { color: rgba(255,255,255,0.45); }
.footer-bottom a:hover { color: white; }

/* ---- TOOL PAGE LAYOUT ---- */
.tool-page {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
  padding: 48px 0 80px;
  align-items: start;
}

.tool-main {}

.tool-sidebar {}

.page-hero {
  background: linear-gradient(135deg, var(--clr-dark) 0%, var(--clr-primary) 100%);
  padding: 56px 0 60px;
  color: white;
}

.page-hero h1 {
  font-family: var(--font-head);
  font-size: clamp(28px, 4vw, 44px);
  font-weight: 800;
  color: white;
  margin-bottom: 12px;
  letter-spacing: -1px;
}

.page-hero p { font-size: 17px; color: rgba(255,255,255,0.7); max-width: 580px; }

.breadcrumb {
  font-size: 13px;
  color: rgba(255,255,255,0.5);
  margin-bottom: 16px;
}

.breadcrumb a { color: rgba(255,255,255,0.6); }
.breadcrumb a:hover { color: var(--clr-accent); }

/* ---- TOOL WIDGET ---- */
.tool-widget {
  background: white;
  border-radius: var(--radius-lg);
  border: 1.5px solid var(--clr-border);
  overflow: hidden;
  margin-bottom: 28px;
}

.tool-widget__header {
  background: var(--clr-bg);
  padding: 20px 28px;
  border-bottom: 1px solid var(--clr-border);
  display: flex;
  align-items: center;
  gap: 12px;
}

.tool-widget__header h2 {
  font-family: var(--font-head);
  font-size: 20px;
  font-weight: 700;
  color: var(--clr-dark);
}

.tool-widget__body { padding: 28px; }

/* ---- FORM ELEMENTS ---- */
.form-group {
  margin-bottom: 20px;
}

.form-label {
  display: block;
  font-size: 14px;
  font-weight: 600;
  color: var(--clr-dark);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--clr-border);
  border-radius: 10px;
  font-size: 15px;
  font-family: var(--font-body);
  color: var(--clr-text);
  background: white;
  transition: var(--transition);
  appearance: none;
}

.form-control:focus {
  outline: none;
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(15,76,129,0.1);
}

/* ---- RESULT CARDS ---- */
.result-card {
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 16px;
  border-left: 4px solid;
}

.result-card--success {
  background: #f0fdf4;
  border-color: #10b981;
  color: #065f46;
}

.result-card--warning {
  background: #fffbeb;
  border-color: #f59e0b;
  color: #78350f;
}

.result-card--error {
  background: #fef2f2;
  border-color: #ef4444;
  color: #7f1d1d;
}

.result-card--info {
  background: #eff6ff;
  border-color: #3b82f6;
  color: #1e3a5f;
}

.result-card h4 {
  font-family: var(--font-head);
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 8px;
}

.result-card p { font-size: 14px; line-height: 1.6; }

/* ---- CHECKLIST ---- */
.checklist { list-style: none; }
.checklist li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--clr-border);
  font-size: 15px;
}
.checklist li:last-child { border-bottom: none; }
.checklist li::before {
  content: '→';
  color: var(--clr-accent);
  font-weight: 700;
  flex-shrink: 0;
  margin-top: 1px;
}

/* ---- PROGRESS ---- */
.progress-bar {
  height: 6px;
  background: var(--clr-border);
  border-radius: 100px;
  overflow: hidden;
  margin-bottom: 4px;
}
.progress-fill {
  height: 100%;
  background: var(--clr-accent);
  border-radius: 100px;
  transition: width 0.5s ease;
}

/* ---- BLOG PAGE ---- */
.blog-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 24px;
  padding: 48px 0 80px;
}

.blog-card {
  background: white;
  border-radius: var(--radius-lg);
  border: 1.5px solid var(--clr-border);
  overflow: hidden;
  transition: var(--transition);
  text-decoration: none;
  color: var(--clr-text);
  display: flex;
  flex-direction: column;
}

.blog-card:hover { box-shadow: var(--shadow-hover); transform: translateY(-3px); color: var(--clr-text); }

.blog-card__thumb {
  height: 180px;
  background: linear-gradient(135deg, var(--clr-primary) 0%, var(--clr-accent-dark) 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 56px;
}

.blog-card__body { padding: 24px; flex: 1; display: flex; flex-direction: column; }
.blog-card__cat { font-size: 12px; font-weight: 600; color: var(--clr-primary); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 10px; }
.blog-card__body h3 { font-family: var(--font-head); font-size: 18px; font-weight: 700; color: var(--clr-dark); margin-bottom: 10px; line-height: 1.3; }
.blog-card__body p { font-size: 14px; color: var(--clr-muted); line-height: 1.6; flex: 1; }
.blog-card__footer { margin-top: 16px; padding-top: 16px; border-top: 1px solid var(--clr-border); font-size: 13px; color: var(--clr-muted); }

/* ---- RESPONSIVE ---- */
@media (max-width: 900px) {
  .steps-grid { grid-template-columns: 1fr; }
  .faq-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .tool-page { grid-template-columns: 1fr; }
  .tool-sidebar { order: -1; }
}

@media (max-width: 640px) {
  .main-nav { display: none; }
  .nav-toggle { display: block; }
  .main-nav.open { display: flex; flex-direction: column; position: fixed; top: 68px; left: 0; right: 0; background: white; padding: 16px 24px; border-bottom: 1px solid var(--clr-border); box-shadow: 0 8px 32px rgba(0,0,0,0.1); z-index: 99; }
  .tools-grid { grid-template-columns: 1fr; }
  .hero { padding: 56px 0 64px; }
  .hero-stats { gap: 24px; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-cta { flex-direction: column; align-items: center; }
}

/* ---- UTILITY ---- */
.text-center { text-align: center; }
.mt-2 { margin-top: 8px; }
.mt-4 { margin-top: 16px; }
.mt-6 { margin-top: 24px; }
.mb-2 { margin-bottom: 8px; }
.mb-4 { margin-bottom: 16px; }
.hidden { display: none; }
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 100px;
  font-size: 12px;
  font-weight: 600;
}
.badge-green { background: #d1fae5; color: #065f46; }
.badge-blue { background: #dbeafe; color: #1e3a8a; }
.badge-yellow { background: #fef3c7; color: #78350f; }
.badge-red { background: #fee2e2; color: #7f1d1d; }

/* ---- SOCIAL / YOUTUBE ---- */
.social-links { display: flex; gap: 12px; align-items: center; margin-top: 12px; }
.social-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
  border: 1.5px solid;
}
.social-link--yt {
  background: rgba(255,0,0,0.1);
  border-color: rgba(255,0,0,0.3);
  color: #ff4444;
}
.social-link--yt:hover {
  background: #ff0000;
  border-color: #ff0000;
  color: white;
  transform: translateY(-1px);
}
.yt-icon { width: 20px; height: 14px; fill: currentColor; }