/*
 * ============================================================
 * AskHVAC.ca - shared.css
 * Global stylesheet for all pages and tools
 * Version: 2.0.0 - Full rebuild
 * ============================================================
 */

/* ============================================================
   1. CSS CUSTOM PROPERTIES
   ============================================================ */
:root {
  /* Colors */
  --clr-primary:        #0057A8;
  --clr-primary-dark:   #003E7E;
  --clr-primary-light:  #E8F0FA;
  --clr-accent:         #FF6B00;
  --clr-accent-dark:    #E05A00;
  --clr-accent-light:   #FFF0E6;

  --clr-bg:             #F4F7FB;
  --clr-surface:        #FFFFFF;
  --clr-surface-alt:    #EEF3FA;
  --clr-border:         #D0DCE8;

  --clr-text:           #1A2636;
  --clr-text-muted:     #5A7191;
  --clr-text-light:     #8BA3BF;

  --clr-success:        #1A8A4A;
  --clr-success-bg:     #E8F7EE;
  --clr-error:          #C0392B;
  --clr-error-bg:       #FDECEA;
  --clr-warning:        #B07400;
  --clr-warning-bg:     #FFF8E1;

  /* Typography */
  --font-display:  'Rajdhani', 'Arial', sans-serif;
  --font-body:     'DM Sans', 'Segoe UI', sans-serif;

  --text-xs:    0.75rem;
  --text-sm:    0.875rem;
  --text-base:  1rem;
  --text-md:    1.0625rem;
  --text-lg:    1.125rem;
  --text-xl:    1.25rem;
  --text-2xl:   1.5rem;
  --text-3xl:   1.875rem;

  --fw-normal:  400;
  --fw-medium:  500;
  --fw-semi:    600;
  --fw-bold:    700;

  /* Spacing */
  --sp-1:  0.25rem;
  --sp-2:  0.5rem;
  --sp-3:  0.75rem;
  --sp-4:  1rem;
  --sp-5:  1.25rem;
  --sp-6:  1.5rem;
  --sp-8:  2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-20: 5rem;

  /* Radius */
  --radius-sm:   4px;
  --radius-md:   8px;
  --radius-lg:   12px;
  --radius-xl:   16px;
  --radius-2xl:  20px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,0.08);
  --shadow-md:  0 4px 12px rgba(0,0,0,0.10);
  --shadow-lg:  0 8px 24px rgba(0,0,0,0.12);
  --shadow-xl:  0 16px 48px rgba(0,0,0,0.15);

  /* Transitions */
  --ease-fast:   0.15s ease;
  --ease-normal: 0.25s ease;
}

/* ============================================================
   2. RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; }

html {
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--clr-text);
  background: var(--clr-bg);
  line-height: 1.6;
  overflow-x: hidden;
  max-width: 100vw;
}

img, video, iframe { max-width: 100%; height: auto; }
a { color: var(--clr-primary); }
a:hover { color: var(--clr-primary-dark); }

/* ============================================================
   3. TYPOGRAPHY
   ============================================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: var(--fw-bold);
  color: var(--clr-text);
  line-height: 1.25;
  margin-top: 0;
  word-break: break-word;
}
h1 { font-size: clamp(1.5rem, 4vw, 2.25rem); margin-bottom: var(--sp-4); }
h2 { font-size: clamp(1.25rem, 3vw, 1.75rem); margin-bottom: var(--sp-4); }
h3 { font-size: clamp(1.05rem, 2.5vw, 1.25rem); margin-bottom: var(--sp-3); }

p { margin-top: 0; margin-bottom: var(--sp-4); }

/* ============================================================
   4. LAYOUT
   ============================================================ */
.container {
  width: 100%;
  max-width: min(1200px, 100%);
  margin-inline: auto;
  padding-inline: var(--sp-6);
}

.page-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: var(--sp-8);
  padding-block: var(--sp-8);
  min-width: 0;
}

.page-content { min-width: 0; overflow: hidden; }
.page-sidebar { min-width: 0; }

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--sp-4);
  background: var(--clr-primary);
  color: #fff;
  padding: var(--sp-2) var(--sp-4);
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: var(--fw-semi);
  z-index: 9999;
}
.skip-link:focus { top: var(--sp-4); }

/* ============================================================
   5. HEADER & NAVIGATION
   ============================================================ */
.site-header {
  background: var(--clr-primary-dark);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
  width: 100%;
  overflow: visible;
}

.header-inner {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
  padding-block: var(--sp-3);
  flex-wrap: nowrap;
}

.site-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  text-decoration: none;
  flex-shrink: 0;
}
.site-logo__icon {
  width: 36px; height: 36px;
  background: var(--clr-accent);
  border-radius: var(--radius-md);
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: var(--fw-bold);
  color: #fff;
  flex-shrink: 0;
}
.site-logo__text {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--fw-bold);
  color: #fff;
  white-space: nowrap;
}
.site-logo__text span { color: var(--clr-accent); }

.site-nav {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-wrap: nowrap;
  overflow: visible;
  flex: 1;
  min-width: 0;
}

.site-nav__link {
  color: rgba(255,255,255,0.80);
  text-decoration: none;
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  white-space: nowrap;
  transition: all var(--ease-fast);
  flex-shrink: 0;
}
.site-nav__link:hover,
.site-nav__link.active {
  background: rgba(255,255,255,0.15);
  color: #fff;
}

/* More dropdown */
.nav-more {
  position: relative;
  flex-shrink: 0;
}
.nav-more__btn {
  color: rgba(255,255,255,0.80);
  background: none;
  border: 1px solid rgba(255,255,255,0.25);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  white-space: nowrap;
  cursor: pointer;
  font-family: var(--font-body);
  transition: all var(--ease-fast);
  display: flex;
  align-items: center;
  gap: var(--sp-1);
}
.nav-more__btn:hover { background: rgba(255,255,255,0.15); color: #fff; }
.nav-more.is-open .nav-more__btn { background: rgba(255,255,255,0.15); color: #fff; }
.nav-more__dropdown {
  display: none;
  position: absolute;
  top: calc(100% + var(--sp-2));
  left: 0;
  background: #1A2636;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-lg);
  padding: var(--sp-2);
  min-width: 220px;
  box-shadow: var(--shadow-xl);
  z-index: 200;
}
.nav-more.is-open .nav-more__dropdown { display: block; }
.nav-more__dropdown a {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-2) var(--sp-3);
  color: rgba(255,255,255,0.75);
  text-decoration: none;
  font-size: var(--text-sm);
  border-radius: var(--radius-md);
  transition: all var(--ease-fast);
  white-space: nowrap;
}
.nav-more__dropdown a:hover { background: rgba(255,255,255,0.10); color: #fff; }
.nav-more__dropdown a.active { color: var(--clr-accent); }
[data-theme="dark"] .nav-more__dropdown { background: #0F1622; border-color: #2A3A52; }

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin-left: auto;
  flex-shrink: 0;
}

.header-search {
  display: flex;
  align-items: center;
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.20);
  border-radius: var(--radius-full);
  padding: var(--sp-1) var(--sp-3);
  gap: var(--sp-2);
}
.header-search__icon { color: rgba(255,255,255,0.60); font-size: var(--text-sm); }
.header-search__input {
  background: transparent;
  border: none;
  outline: none;
  color: #fff;
  font-size: var(--text-sm);
  width: 160px;
  font-family: var(--font-body);
}
.header-search__input::placeholder { color: rgba(255,255,255,0.50); }

.lang-select {
  background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.20);
  border-radius: var(--radius-md);
  color: #fff;
  padding: var(--sp-1) var(--sp-2);
  font-size: var(--text-xs);
  cursor: pointer;
}

.dark-mode-toggle {
  background: rgba(255,255,255,0.10);
  border: 1px solid rgba(255,255,255,0.20);
  border-radius: var(--radius-md);
  color: #fff;
  padding: var(--sp-1) var(--sp-2);
  cursor: pointer;
  font-size: var(--text-base);
  transition: background var(--ease-fast);
}
.dark-mode-toggle:hover { background: rgba(255,255,255,0.20); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--sp-2);
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
}

/* ============================================================
   6. BREADCRUMBS
   ============================================================ */
.breadcrumb {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--sp-1);
  list-style: none;
  margin: 0;
  padding: var(--sp-3) 0;
  font-size: var(--text-sm);
  color: var(--clr-text-muted);
}
.breadcrumb__item { display: flex; align-items: center; }
.breadcrumb__link {
  color: var(--clr-text-muted);
  text-decoration: none;
  transition: color var(--ease-fast);
}
.breadcrumb__link:hover { color: var(--clr-primary); }
.breadcrumb__sep { color: var(--clr-border); margin-inline: var(--sp-1); }

/* ============================================================
   7. HOMEPAGE HERO
   ============================================================ */
.hero {
  background: linear-gradient(135deg, var(--clr-primary-dark) 0%, var(--clr-primary) 60%, #1a73c8 100%);
  padding-block: var(--sp-16) var(--sp-12);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 48px;
  background: var(--clr-bg);
  clip-path: ellipse(55% 100% at 50% 100%);
}
.hero__inner { position: relative; z-index: 1; }

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  padding: var(--sp-2) var(--sp-5);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: var(--fw-semi);
  color: rgba(255,255,255,0.92);
  margin-bottom: var(--sp-5);
}

.hero__title {
  color: #fff;
  margin-bottom: var(--sp-5);
  text-shadow: 0 2px 12px rgba(0,0,0,0.2);
  font-size: clamp(1.5rem, 5vw, 3rem);
  word-break: break-word;
  overflow-wrap: break-word;
}
.hero__title span { color: #FFB067; }

.hero__desc {
  font-size: var(--text-lg);
  color: rgba(255,255,255,0.82);
  margin-bottom: var(--sp-8);
  max-width: min(62ch, 100%);
  margin-inline: auto;
  word-break: break-word;
  overflow-wrap: break-word;
}

.hero__search {
  display: flex;
  max-width: min(600px, 100%);
  width: 100%;
  margin-inline: auto;
  background: #fff;
  border-radius: var(--radius-full);
  padding: var(--sp-1);
  box-shadow: var(--shadow-xl);
  box-sizing: border-box;
}
.hero__search-input {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  padding: var(--sp-3) var(--sp-5);
  font-size: var(--text-base);
  color: var(--clr-text);
  outline: none;
  font-family: var(--font-body);
}
.hero__search-input::placeholder { color: var(--clr-text-light); }
.hero__search-btn {
  background: var(--clr-accent);
  color: #fff;
  border: none;
  border-radius: var(--radius-full);
  padding: var(--sp-3) var(--sp-6);
  font-size: var(--text-base);
  font-weight: var(--fw-semi);
  cursor: pointer;
  transition: background var(--ease-fast), transform var(--ease-fast);
  white-space: nowrap;
  flex-shrink: 0;
  font-family: var(--font-body);
}
.hero__search-btn:hover { background: var(--clr-accent-dark); transform: scale(1.02); }

.hero__stats {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--sp-6);
  margin-top: var(--sp-10);
}
.hero__stat { text-align: center; }
.hero__stat-num {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  font-weight: 900;
  color: #fff;
  line-height: 1;
  display: block;
  text-shadow: 0 2px 8px rgba(0,0,0,0.25);
}
.hero__stat-lbl {
  font-size: var(--text-sm);
  font-weight: 700;
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  display: block;
  margin-top: var(--sp-1);
}

/* ============================================================
   8. CATEGORY CARDS
   ============================================================ */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(280px, 100%), 1fr));
  gap: var(--sp-4);
}

.cat-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: var(--sp-6);
  text-decoration: none;
  display: block;
  transition: transform var(--ease-fast), box-shadow var(--ease-fast), border-color var(--ease-fast);
  min-width: 0;
}
.cat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  border-color: var(--clr-primary);
}
.cat-card__icon {
  font-size: 2rem;
  margin-bottom: var(--sp-3);
  display: block;
}
.cat-card__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--fw-bold);
  color: var(--clr-primary);
  margin-bottom: var(--sp-2);
  word-break: break-word;
}
.cat-card__count {
  font-size: var(--text-xs);
  color: var(--clr-accent);
  font-weight: var(--fw-semi);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--sp-3);
}
.cat-card__desc {
  font-size: var(--text-sm);
  color: var(--clr-text-muted);
  line-height: 1.55;
  margin: 0;
  word-break: break-word;
}

/* Category hero */
.cat-hero {
  background: linear-gradient(135deg, var(--clr-primary-dark) 0%, var(--clr-primary) 55%, #1a73c8 100%);
  padding-block: var(--sp-10) var(--sp-8);
  color: #fff;
  position: relative;
  overflow: hidden;
}
.cat-hero::after {
  content: '';
  position: absolute;
  bottom: -2px; left: 0; right: 0;
  height: 44px;
  background: var(--clr-bg);
  clip-path: ellipse(55% 100% at 50% 100%);
}
.cat-hero__inner { position: relative; z-index: 1; }
.cat-hero__badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  background: rgba(255,255,255,0.15);
  border: 1px solid rgba(255,255,255,0.25);
  padding: var(--sp-1) var(--sp-4);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--fw-semi);
  color: rgba(255,255,255,0.92);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: var(--sp-4);
}
.cat-hero h1 { color: #fff; font-size: clamp(1.5rem, 5vw, 3rem); word-break: break-word; }
.cat-hero__desc {
  color: rgba(255,255,255,0.85);
  font-size: var(--text-lg);
  max-width: min(60ch, 100%);
  margin-bottom: var(--sp-6);
  word-break: break-word;
  overflow-wrap: break-word;
}
.cat-hero__stats {
  display: flex;
  gap: var(--sp-4);
  flex-wrap: wrap;
}
.cat-stat { display: flex; flex-direction: column; }
.cat-stat__num {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 4vw, 2rem);
  font-weight: var(--fw-bold);
  color: #fff;
  line-height: 1;
}
.cat-stat__lbl {
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.65);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-top: 2px;
}

/* ============================================================
   9. TOOL PAGE LAYOUT
   ============================================================ */
.tool-card-body {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: var(--sp-8);
  margin-bottom: var(--sp-6);
  min-width: 0;
  overflow: hidden;
}

.tool-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
  text-decoration: none;
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  transition: transform var(--ease-fast), box-shadow var(--ease-fast), border-color var(--ease-fast);
  min-width: 0;
}
.tool-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--clr-primary);
}
.tool-card__icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}
.tool-card__title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: var(--fw-semi);
  color: var(--clr-primary);
  margin-bottom: var(--sp-1);
  word-break: break-word;
}
.tool-card__desc {
  font-size: var(--text-xs);
  color: var(--clr-text-muted);
  margin: 0;
  line-height: 1.5;
  word-break: break-word;
}

/* ============================================================
   10. FORM CONTROLS
   ============================================================ */
.form-grid   { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(220px, 100%), 1fr)); gap: var(--sp-5); }
.form-grid--2 { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(220px, 100%), 1fr)); gap: var(--sp-5); }
.form-grid--3 { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(200px, 100%), 1fr)); gap: var(--sp-5); }
.form-group { display: flex; flex-direction: column; gap: var(--sp-2); min-width: 0; }

.form-label {
  font-size: var(--text-sm);
  font-weight: var(--fw-medium);
  color: var(--clr-text);
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  flex-wrap: wrap;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: var(--sp-3) var(--sp-4);
  border: 1.5px solid var(--clr-border);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-family: var(--font-body);
  color: var(--clr-text);
  background: var(--clr-surface);
  transition: border-color var(--ease-fast), box-shadow var(--ease-fast);
  max-width: 100%;
  box-sizing: border-box;
}
.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--clr-primary);
  box-shadow: 0 0 0 3px rgba(0,87,168,0.12);
}
.form-input.is-error,
.form-select.is-error { border-color: var(--clr-error); }

.form-hint {
  font-size: var(--text-xs);
  color: var(--clr-text-muted);
  margin-top: var(--sp-1);
}

.input-group {
  display: flex;
  align-items: stretch;
  min-width: 0;
  flex-wrap: nowrap;
}
.input-group .form-input {
  flex: 1;
  min-width: 0;
  border-right: none;
  border-radius: var(--radius-md) 0 0 var(--radius-md);
}
.input-addon {
  background: var(--clr-surface-alt);
  border: 1.5px solid var(--clr-border);
  border-left: none;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: var(--sp-3) var(--sp-4);
  font-size: var(--text-sm);
  color: var(--clr-text-muted);
  white-space: nowrap;
  flex-shrink: 0;
  display: flex;
  align-items: center;
}

.required { color: var(--clr-error); }

/* ============================================================
   11. BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-6);
  border-radius: var(--radius-md);
  font-size: var(--text-base);
  font-weight: var(--fw-semi);
  font-family: var(--font-body);
  cursor: pointer;
  border: 2px solid transparent;
  transition: all var(--ease-fast);
  text-decoration: none;
  white-space: nowrap;
}
.btn-primary {
  background: var(--clr-primary);
  color: #fff;
  border-color: var(--clr-primary);
}
.btn-primary:hover { background: var(--clr-primary-dark); border-color: var(--clr-primary-dark); color: #fff; }

.btn-secondary {
  background: var(--clr-surface);
  color: var(--clr-primary);
  border-color: var(--clr-border);
}
.btn-secondary:hover { border-color: var(--clr-primary); background: var(--clr-primary-light); }

.btn-ghost {
  background: transparent;
  color: var(--clr-text-muted);
  border-color: var(--clr-border);
}
.btn-ghost:hover { border-color: var(--clr-primary); color: var(--clr-primary); background: var(--clr-primary-light); }

.btn-lg { padding: var(--sp-4) var(--sp-8); font-size: var(--text-md); border-radius: var(--radius-lg); }
.btn-sm { padding: var(--sp-2) var(--sp-4); font-size: var(--text-sm); }

.w-full { width: 100%; }

.btn-action-bar {
  display: flex;
  gap: var(--sp-3);
  flex-wrap: wrap;
  align-items: center;
}

/* ============================================================
   12. RESULTS PANEL
   ============================================================ */
.results-panel {
  background: var(--clr-surface);
  border: 2px solid var(--clr-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  margin-bottom: var(--sp-6);
  display: none;
  min-width: 0;
}
.results-panel.is-visible { display: block; }

.results-header {
  background: var(--clr-primary);
  padding: var(--sp-4) var(--sp-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  flex-wrap: wrap;
}
.results-header__title {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--fw-bold);
  color: #fff;
}

.results-body { padding: var(--sp-6); min-width: 0; overflow: hidden; }

.results-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(160px, 100%), 1fr));
  gap: var(--sp-4);
  margin-bottom: var(--sp-6);
}
.result-metric {
  background: var(--clr-surface-alt);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  padding: var(--sp-4);
  text-align: center;
  min-width: 0;
}
.result-metric.highlight {
  background: var(--clr-primary-light);
  border-color: var(--clr-primary);
}
.result-metric__label {
  font-size: var(--text-xs);
  color: var(--clr-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: var(--sp-2);
  word-break: break-word;
}
.result-metric__value {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--fw-bold);
  color: var(--clr-primary);
  line-height: 1;
  word-break: break-all;
}
.result-metric.highlight .result-metric__value { color: var(--clr-primary-dark); }
.result-metric__unit {
  font-size: var(--text-xs);
  color: var(--clr-text-muted);
  margin-top: var(--sp-1);
}

/* Result table */
.result-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--text-sm);
  min-width: 0;
}
.result-table th {
  background: var(--clr-primary);
  color: #fff;
  padding: var(--sp-3) var(--sp-4);
  text-align: left;
  font-size: var(--text-xs);
  font-weight: var(--fw-semi);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  word-break: break-word;
}
.result-table td {
  padding: var(--sp-3) var(--sp-4);
  border-bottom: 1px solid var(--clr-border);
  color: var(--clr-text);
  word-break: break-word;
  overflow-wrap: break-word;
}
.result-table tr:nth-child(even) td { background: var(--clr-surface-alt); }
.result-table .value-cell { font-weight: var(--fw-semi); color: var(--clr-primary); }

/* ============================================================
   13. CHARTS
   ============================================================ */
.chart-container {
  position: relative;
  margin-bottom: var(--sp-5);
  overflow: hidden;
  max-width: 100%;
  width: 100%;
  max-height: 420px;
}
.chart-canvas {
  max-width: 100% !important;
  width: 100% !important;
  max-height: 420px !important;
  height: auto !important;
}
@media (max-width: 768px) {
  .chart-container { max-height: 280px; }
  .chart-canvas { max-height: 280px !important; }
}
@media (max-width: 480px) {
  .chart-container { max-height: 220px; }
  .chart-canvas { max-height: 220px !important; }
}
.chart-title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: var(--fw-semi);
  color: var(--clr-text);
  margin-bottom: var(--sp-3);
}

/* ============================================================
   14. EXPORT BAR
   ============================================================ */
.export-bar {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-4) var(--sp-6);
  background: var(--clr-surface-alt);
  border-top: 1px solid var(--clr-border);
  flex-wrap: wrap;
}
.export-bar__label {
  font-size: var(--text-xs);
  color: var(--clr-text-muted);
  font-weight: var(--fw-semi);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.export-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  background: var(--clr-surface);
  color: var(--clr-text-muted);
  font-size: var(--text-xs);
  font-weight: var(--fw-semi);
  cursor: pointer;
  transition: all var(--ease-fast);
  font-family: var(--font-body);
}
.export-btn:hover { border-color: var(--clr-primary); color: var(--clr-primary); background: var(--clr-primary-light); }

/* ============================================================
   15. TOOLTIPS & INFO ICONS
   ============================================================ */
.info-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 16px; height: 16px;
  border-radius: 50%;
  background: var(--clr-border);
  color: var(--clr-text-muted);
  font-size: 10px;
  font-weight: var(--fw-bold);
  cursor: help;
  font-style: normal;
  flex-shrink: 0;
}
.info-icon:hover { background: var(--clr-primary); color: #fff; }

/* ============================================================
   16. AD ZONES
   ============================================================ */
.ad-header-banner { background: var(--clr-surface); border-bottom: 1px solid var(--clr-border); min-height: 0; }
.ad-zone {
  background: var(--clr-surface-alt);
  border: 1px dashed var(--clr-border);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xs);
  color: var(--clr-text-light);
  min-height: 10px;
}
.ad-leaderboard { min-height: 50px; }
.ad-inline { min-height: 60px; margin-block: var(--sp-4); }
.ad-sidebar { min-height: 250px; }
.ad-midroll { min-height: 90px; margin-block: var(--sp-6); }

/* ============================================================
   17. FAQ & DOC SECTIONS
   ============================================================ */
.doc-section {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: var(--sp-8);
  margin-bottom: var(--sp-6);
}
.doc-section h2 { color: var(--clr-primary); border-bottom: 2px solid var(--clr-primary-light); padding-bottom: var(--sp-3); }
.doc-section h3 { color: var(--clr-text); }
.doc-section p { color: var(--clr-text); line-height: 1.7; }
.doc-section a { color: var(--clr-primary); text-decoration: underline; }
.doc-section ul, .doc-section ol { padding-left: var(--sp-6); }
.doc-section li { margin-bottom: var(--sp-2); color: var(--clr-text); }

.faq-list { display: flex; flex-direction: column; gap: var(--sp-3); }
.faq-item {
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}
.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  padding: var(--sp-4) var(--sp-5);
  background: var(--clr-surface);
  border: none;
  font-size: var(--text-base);
  font-weight: var(--fw-semi);
  color: var(--clr-text);
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
  transition: background var(--ease-fast);
}
.faq-question:hover { background: var(--clr-surface-alt); color: var(--clr-primary); }
.faq-icon { color: var(--clr-primary); font-size: var(--text-xl); flex-shrink: 0; }
.faq-answer {
  display: none;
  padding: var(--sp-5);
  background: var(--clr-surface-alt);
  border-top: 1px solid var(--clr-border);
  font-size: var(--text-sm);
  color: var(--clr-text-muted);
  line-height: 1.65;
}
.faq-item.open .faq-answer,
.faq-item.is-open .faq-answer { display: block; }
.faq-item.open .faq-icon,
.faq-item.is-open .faq-icon { transform: rotate(45deg); }

/* ============================================================
   18. ALERTS
   ============================================================ */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-3);
  padding: var(--sp-4);
  border-radius: var(--radius-lg);
  border: 1px solid;
  margin-bottom: var(--sp-4);
  font-size: var(--text-sm);
}
.alert-icon { font-size: var(--text-lg); flex-shrink: 0; }
.alert-info { background: var(--clr-primary-light); border-color: rgba(0,87,168,0.25); color: var(--clr-text); }
.alert-success { background: var(--clr-success-bg); border-color: var(--clr-success); color: var(--clr-text); }
.alert-error { background: var(--clr-error-bg); border-color: var(--clr-error); color: var(--clr-text); }
.alert-warning { background: var(--clr-warning-bg); border-color: var(--clr-warning); color: var(--clr-text); }

/* ============================================================
   19. SIDEBAR
   ============================================================ */
.sidebar-card {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-xl);
  padding: var(--sp-5);
  margin-bottom: var(--sp-4);
}
.sidebar-card__title {
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: var(--fw-bold);
  color: var(--clr-primary);
  margin-bottom: var(--sp-4);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.sidebar-links { display: flex; flex-direction: column; gap: var(--sp-1); }
.sidebar-link {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius-md);
  color: var(--clr-text-muted);
  text-decoration: none;
  font-size: var(--text-sm);
  transition: all var(--ease-fast);
}
.sidebar-link:hover, .sidebar-link.active {
  background: var(--clr-primary-light);
  color: var(--clr-primary);
}

/* ============================================================
   20. FOOTER
   ============================================================ */
.site-footer {
  background: #1A2636;
  color: rgba(255,255,255,0.75);
  margin-top: var(--sp-16);
  padding-block: var(--sp-12) var(--sp-8);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--sp-8);
  margin-bottom: var(--sp-8);
}
.footer-brand__logo {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: var(--fw-bold);
  color: #fff;
  margin-bottom: var(--sp-3);
}
.footer-brand__logo span { color: var(--clr-accent); }
.footer-brand__desc {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.55);
  line-height: 1.6;
  margin: 0;
}
.footer-col__title {
  font-family: var(--font-display);
  font-size: var(--text-sm);
  font-weight: var(--fw-bold);
  color: #fff;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  margin-bottom: var(--sp-4);
}
.footer-links { display: flex; flex-direction: column; gap: var(--sp-2); }
.footer-link {
  font-size: var(--text-sm);
  color: rgba(255,255,255,0.55);
  text-decoration: none;
  transition: color var(--ease-fast);
}
.footer-link:hover { color: #fff; }
.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding-top: var(--sp-6);
  border-top: 1px solid rgba(255,255,255,0.10);
  font-size: var(--text-xs);
  color: rgba(255,255,255,0.40);
  flex-wrap: wrap;
}
.footer-bottom a { color: rgba(255,255,255,0.55); text-decoration: none; }
.footer-bottom a:hover { color: #fff; }

/* ============================================================
   21. DARK MODE
   ============================================================ */
[data-theme="dark"] {
  --clr-bg:           #0F1622;
  --clr-surface:      #1A2333;
  --clr-surface-alt:  #1E2A3E;
  --clr-border:       #2A3A52;
  --clr-text:         #E2EAF4;
  --clr-text-muted:   #8BA3BF;
  --clr-text-light:   #5A7191;
  --clr-primary-light: #1E2A3E;
}
[data-theme="dark"] .site-header { background: #0A1020; }
[data-theme="dark"] .cat-card,
[data-theme="dark"] .tool-card-body,
[data-theme="dark"] .tool-card,
[data-theme="dark"] .results-panel,
[data-theme="dark"] .doc-section,
[data-theme="dark"] .sidebar-card { background: #1A2333; border-color: #2A3A52; }
[data-theme="dark"] .result-metric { background: #1E2A3E; border-color: #2A3A52; }
[data-theme="dark"] .faq-question { background: #1A2333; color: var(--clr-text); }
[data-theme="dark"] .faq-answer { background: #1E2A3E; }
[data-theme="dark"] .result-table td { border-color: #2A3A52; }
[data-theme="dark"] .result-table tr:nth-child(even) td { background: #1E2A3E; }
[data-theme="dark"] .export-bar { background: #1E2A3E; border-color: #2A3A52; }
[data-theme="dark"] .export-btn { background: #1A2333; border-color: #2A3A52; color: #8BA3BF; }
[data-theme="dark"] .form-input,
[data-theme="dark"] .form-select,
[data-theme="dark"] .form-textarea {
  background: #0F1622;
  border-color: #2A3A52;
  color: var(--clr-text);
}
[data-theme="dark"] .input-addon { background: #1E2A3E; border-color: #2A3A52; color: #8BA3BF; }
[data-theme="dark"] .hero::after,
[data-theme="dark"] .cat-hero::after { background: #0F1622; }
[data-theme="dark"] .site-footer { background: #070D16; }
[data-theme="dark"] .hero__search { background: #1A2333; }
[data-theme="dark"] .hero__search-input { color: var(--clr-text); }

/* ============================================================
   22. RESPONSIVE - TABLET (max 1024px)
   ============================================================ */
@media (max-width: 1024px) {
  .page-layout {
    grid-template-columns: 1fr 260px;
    gap: var(--sp-6);
  }
  .footer-grid { grid-template-columns: 1fr 1fr; gap: var(--sp-6); }
  .header-search { display: none; }
}

/* ============================================================
   23. RESPONSIVE - MOBILE (max 768px)
   ============================================================ */
@media (max-width: 768px) {
  html, body { overflow-x: hidden; }

  .container { padding-inline: var(--sp-4); }

  /* Header */
  .site-nav { display: none; }
  .site-nav.is-open {
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: var(--clr-primary-dark);
    padding: var(--sp-8) var(--sp-6);
    z-index: 200;
    overflow-y: auto;
    gap: var(--sp-2);
  }
  .nav-toggle { display: flex; }
  .header-search { display: none; }
  .lang-select { max-width: 100px; font-size: 11px; }

  /* Layout */
  .page-layout {
    grid-template-columns: 1fr;
    padding-block: var(--sp-5);
    gap: var(--sp-5);
  }
  .page-sidebar { order: 2; }

  /* Hero */
  .hero { padding-block: var(--sp-10) var(--sp-8); }
  .hero__stats { gap: var(--sp-4); }
  .hero__search { flex-direction: column; border-radius: var(--radius-xl); padding: var(--sp-3); }
  .hero__search-btn { width: 100%; border-radius: var(--radius-lg); margin-top: var(--sp-2); }
  .hero__search-input { padding: var(--sp-3); }

  /* Category hero */
  .cat-hero__stats { flex-direction: column; gap: var(--sp-3); }

  /* Grids */
  .categories-grid { grid-template-columns: 1fr; }
  .form-grid,
  .form-grid--2,
  .form-grid--3 { grid-template-columns: 1fr; }
  .results-metrics { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; gap: var(--sp-5); }

  /* Buttons */
  .btn-action-bar { flex-direction: column; }
  .btn-action-bar .btn { width: 100%; justify-content: center; }
  .export-bar { flex-wrap: wrap; justify-content: center; }

  /* Tool card body */
  .tool-card-body { padding: var(--sp-5); }
  .results-body { padding: var(--sp-4); }

  /* Tables scroll */
  .result-table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; }

  /* Footer */
  .footer-bottom { flex-direction: column; text-align: center; }

  /* Input groups */
  .input-group { flex-wrap: wrap; }
  .input-group .form-input { border-radius: var(--radius-md); border-right: 1.5px solid var(--clr-border); width: 100%; }
  .input-addon { border-radius: var(--radius-md); border-left: 1.5px solid var(--clr-border); margin-top: var(--sp-1); }
}

/* ============================================================
   24. RESPONSIVE - SMALL (max 480px)
   ============================================================ */
@media (max-width: 480px) {
  .results-metrics { grid-template-columns: 1fr; }
  .hero__stats { flex-direction: column; align-items: center; gap: var(--sp-4); }
  .cat-card { padding: var(--sp-4); }
  .result-metric__value { font-size: var(--text-xl); }
  .export-btn { font-size: 10px; padding: var(--sp-1) var(--sp-2); }
}

/* ============================================================
   25. PRINT
   ============================================================ */
@media print {
  .site-header, .site-footer, .ad-zone,
  .page-sidebar, .export-bar, .btn-action-bar { display: none !important; }
  .page-layout { display: block; }
  .results-panel { display: block !important; border: 1px solid #ccc; }
  body { background: #fff; color: #000; }
}

/* ============================================================
   26. ACCESSIBILITY
   ============================================================ */
:focus-visible {
  outline: 3px solid var(--clr-primary);
  outline-offset: 2px;
}
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
}