/* ============================================================
   Your Salesforce Guide — shared.css
   Design: Dark editorial / Architect's Workbench
   ============================================================ */


/* ── Variables ── */
:root {
  --bg:          #080C14;
  --bg-card:     #0F1623;
  --bg-elevated: #16202E;
  --bg-glass:    rgba(15,22,35,0.85);
  --border:      rgba(56, 97, 161, 0.2);
  --border-bright: rgba(56, 97, 161, 0.5);

  --text:        #E8EEF8;
  --text-muted:  #7A90B0;
  --text-dim:    #3F5070;

  --accent:      #38BDF8;
  --accent-dim:  rgba(56,189,248,0.12);
  --accent-glow: 0 0 24px rgba(56,189,248,0.25);

  --warm:        #F59E0B;
  --warm-dim:    rgba(245,158,11,0.12);
  --green:       #10B981;
  --red:         #EF4444;
  --purple:      #A78BFA;
  --on-accent:  #030711;

  --gradient-hero: linear-gradient(135deg, #0D1626 0%, #0A1628 40%, #0D0F1A 100%);
  --gradient-card: linear-gradient(160deg, #141E2E 0%, #0F1623 100%);
  --gradient-text: linear-gradient(135deg, #38BDF8 0%, #818CF8 100%);

  --font-head:  'Sora', system-ui, sans-serif;
  --font-body:  'Lora', Georgia, serif;
  --font-mono:  'JetBrains Mono', monospace;
  --font-ui:    'Sora', system-ui, sans-serif;

  --radius-sm:  6px;
  --radius:     12px;
  --radius-lg:  20px;
  --radius-xl:  28px;

  --shadow:      0 4px 20px rgba(0,0,0,0.4);
  --shadow-lg:   0 12px 48px rgba(0,0,0,0.5);
  --shadow-card: 0 2px 12px rgba(0,0,0,0.3), 0 0 0 1px rgba(56,97,161,0.15);

  --transition: 200ms cubic-bezier(0.4,0,0.2,1);
  --nav-h: 68px;
}

/* ── Theme variants ────────────────────────────────────────── */
/* :root above is the default (Dark editorial) theme.            */
/* The data-theme attribute on <html> selects an alternate set. */

[data-theme="light"] {
  --bg:          #F8FAFC;
  --bg-card:     #FFFFFF;
  --bg-elevated: #F1F5F9;
  --bg-glass:    rgba(255,255,255,0.85);
  --border:      rgba(56, 97, 161, 0.18);
  --border-bright: rgba(56, 97, 161, 0.45);

  --text:        #0F172A;
  --text-muted:  #475569;
  --text-dim:    #94A3B8;

  --accent:      #0284C7;
  --accent-dim:  rgba(2,132,199,0.10);
  --accent-glow: 0 0 24px rgba(2,132,199,0.18);

  --warm:        #D97706;
  --warm-dim:    rgba(217,119,6,0.10);
  --green:       #059669;
  --red:         #DC2626;
  --purple:      #7C3AED;
  --on-accent:   #FFFFFF;

  --gradient-hero: linear-gradient(135deg, #F1F5F9 0%, #E0F2FE 40%, #F8FAFC 100%);
  --gradient-card: linear-gradient(160deg, #FFFFFF 0%, #F8FAFC 100%);
  --gradient-text: linear-gradient(135deg, #0284C7 0%, #6366F1 100%);

  --shadow:      0 4px 20px rgba(15,23,42,0.08);
  --shadow-lg:   0 12px 48px rgba(15,23,42,0.12);
  --shadow-card: 0 2px 12px rgba(15,23,42,0.06), 0 0 0 1px rgba(56,97,161,0.10);
}

[data-theme="modern"] {
  --bg:          #FAFAFA;
  --bg-card:     #FFFFFF;
  --bg-elevated: #F4F4F5;
  --bg-glass:    rgba(255,255,255,0.92);
  --border:      rgba(0,0,0,0.08);
  --border-bright: rgba(0,0,0,0.22);

  --text:        #09090B;
  --text-muted:  #52525B;
  --text-dim:    #A1A1AA;

  --accent:      #18181B;
  --accent-dim:  rgba(24,24,27,0.06);
  --accent-glow: 0 0 24px rgba(24,24,27,0.10);

  --warm:        #44403C;
  --warm-dim:    rgba(68,64,60,0.08);
  --green:       #27272A;
  --red:         #18181B;
  --purple:      #3F3F46;
  --on-accent:   #FAFAFA;

  --gradient-hero: linear-gradient(135deg, #FAFAFA 0%, #F4F4F5 50%, #FAFAFA 100%);
  --gradient-card: linear-gradient(160deg, #FFFFFF 0%, #FAFAFA 100%);
  --gradient-text: linear-gradient(135deg, #09090B 0%, #52525B 100%);

  --shadow:      0 4px 20px rgba(0,0,0,0.05);
  --shadow-lg:   0 12px 48px rgba(0,0,0,0.10);
  --shadow-card: 0 1px 6px rgba(0,0,0,0.04), 0 0 0 1px rgba(0,0,0,0.06);
}

[data-theme="colourful"] {
  --bg:          #FFF7FB;
  --bg-card:     #FFFFFF;
  --bg-elevated: #FDF2F8;
  --bg-glass:    rgba(255,247,251,0.88);
  --border:      rgba(236,72,153,0.22);
  --border-bright: rgba(236,72,153,0.50);

  --text:        #1E1B4B;
  --text-muted:  #6D28D9;
  --text-dim:    #A78BFA;

  --accent:      #EC4899;
  --accent-dim:  rgba(236,72,153,0.12);
  --accent-glow: 0 0 28px rgba(236,72,153,0.35);

  --warm:        #F59E0B;
  --warm-dim:    rgba(245,158,11,0.14);
  --green:       #10B981;
  --red:         #EF4444;
  --purple:      #8B5CF6;
  --on-accent:   #FFFFFF;

  --gradient-hero: linear-gradient(135deg, #FCE7F3 0%, #DBEAFE 40%, #FEF3C7 100%);
  --gradient-card: linear-gradient(160deg, #FFFFFF 0%, #FDF4FF 100%);
  --gradient-text: linear-gradient(135deg, #EC4899 0%, #8B5CF6 50%, #06B6D4 100%);

  --shadow:      0 4px 20px rgba(236,72,153,0.12);
  --shadow-lg:   0 12px 48px rgba(236,72,153,0.20);
  --shadow-card: 0 2px 12px rgba(236,72,153,0.10), 0 0 0 1px rgba(236,72,153,0.12);
}

/* Smooth theme transitions */
html { transition: background-color var(--transition); }
body { transition: background var(--transition), color var(--transition); }
.nav, .blog-card, .btn, .tag { transition: background var(--transition), color var(--transition), border-color var(--transition), box-shadow var(--transition); }

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

img { display: block; max-width: 100%; height: auto; }
a  { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }

/* ── Navigation ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  padding: 0 clamp(20px, 5vw, 64px);
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  gap: 32px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 1rem;
  letter-spacing: -0.02em;
  color: var(--text);
  flex-shrink: 0;
}

.nav-brand img {
  width: 32px;
  height: 32px;
  border-radius: 6px;
  object-fit: cover;
}

.nav-brand .brand-name { display: flex; flex-direction: column; line-height: 1.1; }
.nav-brand .brand-top  { font-size: 0.65rem; font-weight: 500; color: var(--accent); letter-spacing: 0.12em; text-transform: uppercase; }
.nav-brand .brand-main { font-size: 0.95rem; color: var(--text); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-left: auto;
}

.nav-link {
  font-family: var(--font-ui);
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  padding: 6px 14px;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  letter-spacing: 0.01em;
}

.nav-link:hover  { color: var(--text); background: var(--accent-dim); }
.nav-link.active { color: var(--accent); background: var(--accent-dim); }

.nav-link.nav-cta {
  background: var(--accent);
  color: var(--on-accent);
  font-weight: 600;
  margin-left: 8px;
}
.nav-link.nav-cta:hover { background: var(--accent); color: var(--on-accent); filter: brightness(1.12); box-shadow: var(--accent-glow); }

.nav-link.nav-learn {
  background: var(--warm-dim);
  color: var(--warm);
  border: 1px solid rgba(245,158,11,0.25);
}
.nav-link.nav-learn:hover { background: var(--warm); color: var(--on-accent); }

/* ── Theme toggle (single button that cycles through themes) ── */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  padding: 0;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: 999px;
  margin-left: 6px;
  margin-right: 4px;
  color: var(--text-muted);
  cursor: pointer;
  flex-shrink: 0;
  transition: color var(--transition), background var(--transition), border-color var(--transition), transform var(--transition);
}

.theme-toggle:hover  { color: var(--text); background: var(--accent-dim); border-color: var(--border-bright); }
.theme-toggle:active { transform: scale(0.92); }
.theme-toggle:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
.theme-toggle svg { width: 16px; height: 16px; display: block; }

/* Show only the icon that matches the current theme */
.theme-toggle .theme-icon { display: none; }
[data-theme="dark"]      .theme-toggle .theme-icon[data-theme-icon="dark"],
[data-theme="light"]     .theme-toggle .theme-icon[data-theme-icon="light"],
[data-theme="modern"]    .theme-toggle .theme-icon[data-theme-icon="modern"],
[data-theme="colourful"] .theme-toggle .theme-icon[data-theme-icon="colourful"] {
  display: block;
}

/* ── Page Layout ── */
.page-wrapper {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 64px);
}

/* ── Section Headers ── */
.section-label {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 10px;
}

.section-title {
  font-family: var(--font-head);
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.15;
  color: var(--text);
}

.section-sub {
  font-size: 1rem;
  color: var(--text-muted);
  margin-top: 10px;
  max-width: 52ch;
}

/* ── Blog Cards ── */
.blog-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

.blog-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg), var(--accent-glow);
  border-color: var(--border-bright);
}

.blog-card-img {
  width: 100%;
  aspect-ratio: 1/1;
  object-fit: cover;
  background: var(--bg-elevated);
}

.blog-card-img-placeholder {
  width: 100%;
  aspect-ratio: 1/1;
  background: var(--gradient-card);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-dim);
  font-size: 2.4rem;
}

.blog-card-body {
  padding: 20px 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.tag {
  font-family: var(--font-ui);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 3px 9px;
  border-radius: 100px;
  border: 1px solid;
}

.tag-agentforce { color: var(--accent);  border-color: rgba(56,189,248,0.3);  background: var(--accent-dim);  }
.tag-architecture { color: var(--purple); border-color: rgba(167,139,250,0.3); background: rgba(167,139,250,0.1); }
.tag-data-cloud { color: var(--green);  border-color: rgba(16,185,129,0.3);  background: rgba(16,185,129,0.1); }
.tag-certification { color: var(--warm); border-color: rgba(245,158,11,0.3);  background: var(--warm-dim); }
.tag-releases { color: #FB923C; border-color: rgba(251,146,60,0.3); background: rgba(251,146,60,0.1); }
.tag-testing  { color: var(--green); border-color: rgba(16,185,129,0.3); background: rgba(16,185,129,0.1); }
.tag-ai-risk  { color: var(--red); border-color: rgba(239,68,68,0.3); background: rgba(239,68,68,0.1); }
.tag-integration { color: var(--purple); border-color: rgba(167,139,250,0.3); background: rgba(167,139,250,0.1); }
.tag-default  { color: var(--text-muted); border-color: var(--border); background: var(--bg-elevated); }

.blog-card-date {
  font-family: var(--font-ui);
  font-size: 0.72rem;
  color: var(--text-dim);
  margin-left: auto;
}

.blog-card-title {
  font-family: var(--font-head);
  font-size: 1.05rem;
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -0.02em;
  color: var(--text);
  transition: color var(--transition);
}

.blog-card:hover .blog-card-title { color: var(--accent); }

.blog-card-excerpt {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card-footer {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--border);
  font-family: var(--font-ui);
  font-size: 0.75rem;
  color: var(--text-dim);
}

.blog-card-footer .read-time::before { content: '⏱ '; }
.blog-card-arrow {
  margin-left: auto;
  color: var(--accent);
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity var(--transition), transform var(--transition);
}
.blog-card:hover .blog-card-arrow { opacity: 1; transform: translateX(0); }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-ui);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 10px 22px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  letter-spacing: 0.01em;
}

.btn-primary {
  background: var(--accent);
  color: var(--on-accent);
  border-color: var(--accent);
}
.btn-primary:hover { filter: brightness(1.12); box-shadow: var(--accent-glow); }

.btn-outline {
  background: transparent;
  color: var(--text);
  border-color: var(--border-bright);
}
.btn-outline:hover { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); }

.btn-ghost {
  background: transparent;
  color: var(--text-muted);
  border-color: transparent;
}
.btn-ghost:hover { color: var(--text); background: var(--bg-elevated); }

/* ── Footer ── */
.footer {
  margin-top: 100px;
  border-top: 1px solid var(--border);
  padding: 48px clamp(20px, 5vw, 64px);
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 24px;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-head);
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text);
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--text-dim);
  margin-top: 4px;
}

.footer-links {
  display: flex;
  gap: 20px;
  font-family: var(--font-ui);
  font-size: 0.8rem;
  color: var(--text-muted);
}

.footer-links a:hover { color: var(--accent); }

/* ── Noise texture overlay ── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

/* ── Utilities ── */
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0,0,0,0); }
.text-accent  { color: var(--accent); }
.text-muted   { color: var(--text-muted); }
.text-warm    { color: var(--warm); }
.font-head    { font-family: var(--font-head); }
.font-mono    { font-family: var(--font-mono); }
.w-full       { width: 100%; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--bg-elevated); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--border-bright); }

/* ── Responsive nav ── */
@media (max-width: 768px) {
  .nav { padding: 0 14px; gap: 12px; }
  .nav-links { gap: 6px; min-width: 0; }
  .nav-links .nav-link:not(.nav-cta):not(.nav-learn) { display: none; }
  .nav-links .nav-cta, .nav-links .nav-learn { display: flex; }
  .nav-brand { gap: 8px; font-size: 0.9rem; min-width: 0; }
  .nav-brand img { width: 28px; height: 28px; }
  .nav-brand .brand-top  { font-size: 0.58rem; }
  .nav-brand .brand-main { font-size: 0.85rem; }
  .nav-link.nav-learn { font-size: 0.74rem; padding: 5px 10px; white-space: nowrap; }
  .theme-toggle { width: 32px; height: 32px; margin-left: 2px; margin-right: 2px; }
  .theme-toggle svg { width: 15px; height: 15px; }
  .footer { grid-template-columns: 1fr; text-align: center; }
  .footer-links { justify-content: center; }
}

@media (max-width: 420px) {
  .nav { padding: 0 10px; gap: 8px; }
  .nav-brand .brand-name { display: none; }
  .nav-link.nav-learn { font-size: 0.7rem; padding: 5px 8px; }
}

/* ── QuizzyTouch partner launch (homepage CTA) ────────────────────────── */
.quiz-launch-form {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-top: 12px;
  animation: quiz-launch-slide-in 200ms cubic-bezier(0.4, 0, 0.2, 1);
}
@keyframes quiz-launch-slide-in {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}
.quiz-launch-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.quiz-launch-email {
  flex: 1 1 280px;
  min-width: 0;
  padding: 12px 16px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius-sm);
  color: var(--text);
  font-family: var(--font-mono);
  font-size: 0.95rem;
  transition: border-color var(--transition);
}
.quiz-launch-email:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.quiz-launch-email:disabled { opacity: 0.6; }
.quiz-launch-msg {
  font-family: var(--font-ui);
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
}
.quiz-launch-msg[data-kind="err"]  { color: var(--red); }
.quiz-launch-msg[data-kind="info"] { color: var(--accent); }
.quiz-launch-help {
  font-family: var(--font-ui);
  font-size: 0.78rem;
  color: var(--text-dim);
  line-height: 1.5;
  margin: 4px 0 0;
  max-width: 56ch;
}
