/* ============================================================
   kafsmart — shared site stylesheet
   Unified identity with the live kafsmart.com (Amzaff design system):
   primary #ff5a1f (burnt orange), accent #0f766e (teal), 3 themes.
   Used by: index.html + all legal/sub pages.
   ============================================================ */

:root {
  /* color - Premium Editorial Palette */
  --color-bg: #ffffff;
  --color-surface: #f8fafc;
  --color-surface-warm: #fdfbf7;
  --color-text: #0f172a;
  --color-muted: #475569;
  --color-border: #e2e8f0;
  --color-primary: #ff5a1f;
  --color-primary-hover: #e04a10;
  --color-accent: #0f766e;
  --color-accent-hover: #115e59;
  --color-star: #fbbf24;
  --color-success: #0d9488;
  --color-danger: #e11d48;

  /* typography */
  --font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-lg: 1.125rem;
  --fs-xl: 1.375rem;
  --fs-2xl: 1.875rem;
  --fs-3xl: 2.5rem;

  /* spacing */
  --sp-1: 4px; --sp-2: 8px; --sp-3: 12px; --sp-4: 16px;
  --sp-5: 24px; --sp-6: 32px; --sp-8: 48px; --sp-10: 64px;

  /* misc */
  --radius: 16px;
  --radius-sm: 10px;
  --shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.05);
  --shadow: 0 4px 6px -1px rgba(15, 23, 42, 0.05), 0 10px 15px -3px rgba(15, 23, 42, 0.05);
  --shadow-lg: 0 20px 25px -5px rgba(15, 23, 42, 0.08), 0 10px 10px -5px rgba(15, 23, 42, 0.04);
  --maxw: 1040px;
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

html[data-theme="dark"] {
  --color-bg: #0f172a;
  --color-surface: #1e293b;
  --color-surface-warm: #182235;
  --color-text: #f8fafc;
  --color-muted: #94a3b8;
  --color-border: #334155;
  --color-primary: #ff5a1f;
  --color-primary-hover: #ff7847;
  --color-accent: #2dd4bf;
  --color-accent-hover: #5eead4;
  --color-star: #fbbf24;
  --color-success: #2dd4bf;
  --color-danger: #f43f5e;
}

html[data-theme="neutral"] {
  --color-bg: #fafaf9;
  --color-surface: #f5f5f4;
  --color-surface-warm: #f6f3eb;
  --color-text: #1c1917;
  --color-muted: #57534e;
  --color-border: #e7e5e4;
  --color-primary: #e04f16;
  --color-primary-hover: #c2410c;
  --color-accent: #0f766e;
  --color-accent-hover: #115e59;
  --color-star: #fbbf24;
  --color-success: #0d9488;
  --color-danger: #e11d48;
}

* { box-sizing: border-box; min-width: 0; }

html { scroll-behavior: smooth; }
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }

h1, h2, h3, h4, h5, h6 {
  overflow-wrap: anywhere;
  word-break: break-word;
  white-space: normal;
}

html, body { max-width: 100%; overflow-x: hidden; }

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  padding-bottom: 80px; /* space for mobile sticky CTA bar (homepage) */
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}
@media (min-width: 1024px) { body { padding-bottom: 0; } }

a { color: var(--color-accent); text-decoration: none; transition: var(--transition); }
a:hover { color: var(--color-accent-hover); text-decoration: underline; }

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

.container { max-width: var(--maxw); margin: 0 auto; padding: 0 var(--sp-4); width: 100%; }

/* ===== HEADER ===== */
.site-header {
  border-bottom: 1px solid var(--color-border);
  padding: var(--sp-2) 0;
  background: var(--color-bg);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
  background-color: color-mix(in srgb, var(--color-bg) 90%, transparent);
}
@supports (padding: max(0px)){ .site-header{ padding-top: max(var(--sp-2), env(safe-area-inset-top)); } }
.header-container { display: flex; justify-content: space-between; align-items: center; gap: var(--sp-4); }
.header__logo {
  font-size: var(--fs-lg); font-weight: 800; color: var(--color-text);
  text-decoration: none; display: flex; align-items: center; gap: 8px;
  letter-spacing: 0.5px;
}
.header__logo:hover { text-decoration: none; }
.header__logo .logo-mark { width: 30px; height: 30px; flex: none; }
.header__logo .star { color: var(--color-primary); font-size: 1.25rem; }
.header__right { display: flex; align-items: center; gap: var(--sp-3); }

/* Theme switch */
.theme-switch { display: flex; gap: 2px; border: 1px solid var(--color-border); border-radius: 999px; padding: 2px; background: var(--color-surface); }
.theme-btn { border: none; background: transparent; cursor: pointer; width: 26px; height: 26px; border-radius: 50%; font-size: 13px; display: flex; align-items: center; justify-content: center; color: var(--color-muted); transition: var(--transition); }
.theme-btn:hover { color: var(--color-text); }
.theme-btn.active { background: var(--color-primary); color: #fff; }

/* Disclosure link */
.header__disclosure-link { font-size: var(--fs-xs); color: var(--color-muted); text-decoration: none; font-weight: 500; }
.header__disclosure-link:hover { color: var(--color-accent); text-decoration: none; }

/* ===== TYPOGRAPHY HELPERS ===== */
.badge-tag {
  display: inline-block; font-size: 0.7rem; font-weight: 800; color: var(--color-primary);
  text-transform: uppercase; letter-spacing: 1.5px; margin-bottom: var(--sp-2);
  background-color: color-mix(in srgb, var(--color-primary) 8%, transparent); padding: 2px var(--sp-2); border-radius: 50px;
}

/* ===== BUTTONS ===== */
.cta {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--sp-2);
  background: var(--color-primary); color: #fff; font-weight: 700; font-size: var(--fs-base);
  padding: var(--sp-3) var(--sp-6); border-radius: 999px;
  box-shadow: 0 4px 12px rgba(255, 90, 31, 0.2);
  transition: var(--transition); border: none; cursor: pointer; letter-spacing: 0.2px;
  text-decoration: none;
}
.cta:hover { background: var(--color-primary-hover); color: #fff; text-decoration: none; transform: translateY(-1px); box-shadow: 0 6px 16px rgba(255, 90, 31, 0.3); }
.cta:active { transform: translateY(0); }
.cta--ghost { background: transparent; color: var(--color-text); border: 2px solid var(--color-border); box-shadow: none; }
.cta--ghost:hover { background: var(--color-surface); border-color: var(--color-primary); color: var(--color-text); box-shadow: none; transform: none; }
.cta--accent { background: var(--color-accent); box-shadow: 0 4px 12px rgba(15, 118, 110, 0.2); }
.cta--accent:hover { background: var(--color-accent-hover); box-shadow: 0 6px 16px rgba(15, 118, 110, 0.3); }

/* ===== HERO (homepage) ===== */
.hero-container { max-width: 960px; width: 100%; margin: 0 auto; padding: var(--sp-6) var(--sp-4); }
.home-grid { display: flex; flex-direction: column; gap: var(--sp-5); align-items: center; text-align: center; margin-bottom: var(--sp-6); }
@media (min-width: 768px) {
  .home-grid { display: grid; grid-template-columns: 1.3fr 0.7fr; gap: var(--sp-8); text-align: left; align-items: center; margin-bottom: var(--sp-8); }
}
.headline { font-size: var(--fs-2xl); font-weight: 900; letter-spacing: -0.03em; line-height: 1.1; color: var(--color-text); margin: 0 0 var(--sp-2); }
@media (min-width: 768px) { .headline { font-size: var(--fs-3xl); } }
.lead-paragraph { font-size: var(--fs-lg); color: var(--color-muted); line-height: 1.55; margin: 0 0 var(--sp-5); max-width: 580px; }
@media (max-width: 767px) { .lead-paragraph { margin-left: auto; margin-right: auto; } }
.hero-cta-row { display: flex; gap: var(--sp-3); flex-wrap: wrap; }
@media (max-width: 767px) { .hero-cta-row { justify-content: center; } }
.visual-wrapper { max-width: 240px; width: 100%; opacity: 0.95; }
@media (max-width: 767px) { .visual-wrapper { margin: 0 auto; } }

/* ===== PRINCIPLES GRID ===== */
.principles-grid { display: grid; grid-template-columns: 1fr; gap: var(--sp-3); text-align: left; }
@media (min-width: 768px) { .principles-grid { grid-template-columns: repeat(3, 1fr); gap: var(--sp-4); } }
.principle-card { background-color: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius-sm); padding: var(--sp-4); transition: var(--transition); }
.principle-card:hover { border-color: var(--color-primary); background-color: var(--color-bg); transform: translateY(-2px); box-shadow: var(--shadow-sm); }
.principle-title { font-size: 0.95rem; font-weight: 800; color: var(--color-text); margin: 0 0 2px; display: flex; align-items: center; gap: var(--sp-2); }
.principle-desc { font-size: var(--fs-sm); color: var(--color-muted); margin: 0; line-height: 1.5; }

/* ===== SECTION BLOCK ===== */
.section { padding: var(--sp-8) 0; border-top: 1px solid var(--color-border); }
.section--first { border-top: none; padding-top: var(--sp-8); }
.section-head { text-align: center; margin-bottom: var(--sp-6); }
.section-head .kicker { color: var(--color-accent); font-weight: 700; letter-spacing: 2px; text-transform: uppercase; font-size: var(--fs-xs); margin-bottom: var(--sp-2); display: inline-block; }
.section-head h2 { font-size: var(--fs-2xl); margin: 0 0 var(--sp-2); letter-spacing: -0.02em; }
.section-head p { color: var(--color-muted); max-width: 620px; margin: 0 auto; font-size: var(--fs-base); }

/* ===== CONTENT TYPES (3 things kafsmart publishes) ===== */
.types-grid { display: grid; grid-template-columns: 1fr; gap: var(--sp-4); }
@media (min-width: 900px) { .types-grid { grid-template-columns: repeat(3, 1fr); } }
.type-card { background: var(--color-bg); border: 1px solid var(--color-border); border-radius: var(--radius); padding: var(--sp-6); transition: var(--transition); position: relative; overflow: hidden; }
.type-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-lg); border-color: var(--color-accent); }
.type-card .tag { font-size: var(--fs-xs); font-weight: 800; letter-spacing: 1.5px; text-transform: uppercase; color: var(--color-primary); margin-bottom: var(--sp-3); }
.type-card .glyph { width: 56px; height: 56px; border-radius: 14px; background: var(--color-surface); display: flex; align-items: center; justify-content: center; font-size: 28px; margin-bottom: var(--sp-4); }
.type-card h3 { font-size: var(--fs-lg); margin: 0 0 var(--sp-2); }
.type-card p { font-size: var(--fs-sm); color: var(--color-muted); line-height: 1.6; margin: 0 0 var(--sp-3); }
.type-card .arrive { font-size: var(--fs-xs); color: var(--color-text); background: var(--color-surface); border-radius: var(--radius-sm); padding: var(--sp-2) var(--sp-3); line-height: 1.5; }
.type-card .arrive b { color: var(--color-accent); }

/* ===== COMPARISON ===== */
.compare-grid { display: grid; grid-template-columns: 1fr; gap: var(--sp-4); }
@media (min-width: 768px) { .compare-grid { grid-template-columns: 1fr 1fr; } }
.compare-col { border-radius: var(--radius); padding: var(--sp-5); border: 1px solid var(--color-border); }
.compare-col.bad { background: color-mix(in srgb, var(--color-danger) 4%, var(--color-bg)); }
.compare-col.good { background: color-mix(in srgb, var(--color-success) 5%, var(--color-bg)); }
.compare-col h3 { font-size: var(--fs-base); margin: 0 0 var(--sp-3); display: flex; align-items: center; gap: var(--sp-2); }
.compare-col.bad h3 { color: var(--color-danger); }
.compare-col.good h3 { color: var(--color-success); }
.compare-col ul { list-style: none; padding: 0; margin: 0; display: grid; gap: var(--sp-2); }
.compare-col li { font-size: var(--fs-sm); display: flex; gap: var(--sp-2); align-items: flex-start; line-height: 1.5; }
.compare-col li .ic { flex: none; font-weight: 800; }
.compare-col.bad li .ic { color: var(--color-danger); }
.compare-col.good li .ic { color: var(--color-success); }

/* ===== HOW IT WORKS ===== */
.steps-grid { display: grid; grid-template-columns: 1fr; gap: var(--sp-4); }
@media (min-width: 768px) { .steps-grid { grid-template-columns: repeat(3, 1fr); } }
.step-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: var(--sp-5); }
.step-card .num { width: 40px; height: 40px; border-radius: 12px; background: var(--color-primary); color: #fff; display: flex; align-items: center; justify-content: center; font-weight: 800; font-size: var(--fs-base); margin-bottom: var(--sp-3); }
.step-card h3 { font-size: var(--fs-base); margin: 0 0 var(--sp-2); }
.step-card p { font-size: var(--fs-sm); color: var(--color-muted); line-height: 1.6; margin: 0; }

/* ===== PROMISE ===== */
.promise-band { background: var(--color-surface-warm); border: 1px solid var(--color-border); border-radius: var(--radius); padding: var(--sp-8) var(--sp-6); text-align: center; margin: var(--sp-8) 0; }
.promise-band .kicker { color: var(--color-accent); font-weight: 700; letter-spacing: 2px; text-transform: uppercase; font-size: var(--fs-xs); margin-bottom: var(--sp-2); display: inline-block; }
.promise-band h2 { font-size: var(--fs-2xl); margin: 0 0 var(--sp-3); }
.promise-band p { max-width: 720px; margin: 0 auto; font-size: var(--fs-base); line-height: 1.8; color: var(--color-text); }

/* ===== FAQ ===== */
.faq-list { max-width: 760px; margin: 0 auto; display: flex; flex-direction: column; gap: var(--sp-3); }
.faq-item { border: 1px solid var(--color-border); border-radius: var(--radius-sm); overflow: hidden; background: var(--color-bg); }
.faq-q { width: 100%; text-align: left; background: none; border: none; padding: var(--sp-4) var(--sp-5); font-size: var(--fs-base); font-weight: 700; color: var(--color-text); cursor: pointer; display: flex; justify-content: space-between; align-items: center; gap: var(--sp-3); font-family: inherit; }
.faq-q .chev { flex: none; font-size: var(--fs-xl); color: var(--color-muted); transition: transform 0.2s; }
.faq-q[aria-expanded="true"] .chev { transform: rotate(45deg); color: var(--color-primary); }
.faq-a { max-height: 0; overflow: hidden; transition: max-height 0.25s ease; color: var(--color-muted); font-size: var(--fs-sm); line-height: 1.7; }
.faq-a > div { padding: 0 var(--sp-5) var(--sp-4); }

/* ===== NEWSLETTER ===== */
.newsletter-band { background: var(--color-surface-warm); border: 1px solid var(--color-border); border-radius: var(--radius); padding: var(--sp-8) var(--sp-6); text-align: center; margin: var(--sp-8) 0; }
.newsletter-band h2 { font-size: var(--fs-2xl); margin: 0 0 var(--sp-2); }
.newsletter-band > p { color: var(--color-muted); max-width: 560px; margin: 0 auto var(--sp-5); font-size: var(--fs-base); }
.news-form { display: flex; gap: var(--sp-2); max-width: 440px; margin: 0 auto; flex-wrap: wrap; }
.news-form input { flex: 1; min-width: 200px; padding: var(--sp-3) var(--sp-4); border-radius: 999px; border: 1px solid var(--color-border); font-size: var(--fs-sm); font-family: inherit; color: var(--color-text); background: var(--color-bg); }
.news-form input:focus { outline: none; border-color: var(--color-primary); }
.news-form .cta { flex: none; }
.news-note { font-size: var(--fs-xs); color: var(--color-muted); margin-top: var(--sp-3); }
.news-success { display: none; margin-top: var(--sp-4); padding: var(--sp-3) var(--sp-4); border-radius: var(--radius-sm); background: color-mix(in srgb, var(--color-success) 12%, var(--color-bg)); color: var(--color-success); font-size: var(--fs-sm); font-weight: 600; }
.news-success.show { display: block; animation: fade-up 0.3s ease; }
@keyframes fade-up { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }

/* ===== FOOTER ===== */
.site-footer {
  border-top: 1px solid var(--color-border); color: var(--color-muted); font-size: var(--fs-xs);
  text-align: center; padding: var(--sp-6) var(--sp-4) var(--sp-8); background: var(--color-surface);
  margin-top: auto;
}
.footer-logo { font-size: var(--fs-sm); font-weight: 800; text-transform: uppercase; color: var(--color-text); margin-bottom: var(--sp-3); letter-spacing: 0.5px; display: flex; align-items: center; gap: 8px; justify-content: center; }
.footer-logo .logo-mark { width: 26px; height: 26px; flex: none; }
.footer-logo .star { color: var(--color-primary); }
.footer-links { margin-bottom: var(--sp-2); display: flex; justify-content: center; gap: var(--sp-4); flex-wrap: wrap; }
.footer-links a { color: var(--color-muted); text-decoration: none; }
.footer-links a:hover { color: var(--color-accent); }
.disclosure { max-width: 680px; margin: var(--sp-3) auto 0; line-height: 1.6; padding: 0 var(--sp-4); font-size: 10px; }
.disclosure p { margin: 0 0 var(--sp-2); }
.disclosure p:last-child { margin-bottom: 0; }

/* ============================================================
   LEGAL / SUB-PAGES (about, contact, privacy, terms, disclosure)
   ============================================================ */
.page-hero {
  padding: var(--sp-8) 0 var(--sp-6);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}
.page-hero .container { text-align: center; }
.page-hero h1 { font-size: var(--fs-2xl); margin: 0 0 var(--sp-2); letter-spacing: -0.02em; }
.page-hero p { color: var(--color-muted); max-width: 640px; margin: 0 auto; font-size: var(--fs-base); }
.prose { max-width: 760px; margin: 0 auto; padding: var(--sp-8) var(--sp-4); }
.prose h2 { font-size: var(--fs-xl); margin: var(--sp-6) 0 var(--sp-3); }
.prose h2:first-child { margin-top: 0; }
.prose h3 { font-size: var(--fs-lg); margin: var(--sp-5) 0 var(--sp-2); }
.prose p { margin: 0 0 var(--sp-4); color: var(--color-text); }
.prose ul, .prose ol { margin: 0 0 var(--sp-4) var(--sp-4); padding-left: var(--sp-4); }
.prose li { margin-bottom: var(--sp-2); }
.prose strong { color: var(--color-text); }
.prose a { color: var(--color-accent); }
.prose .info-card {
  background: var(--color-surface-warm); border: 1px solid var(--color-border);
  border-radius: var(--radius); padding: var(--sp-5); margin: var(--sp-5) 0;
}
.prose .info-card h3 { margin-top: 0; }
.prose .last-updated { font-size: var(--fs-xs); color: var(--color-muted); margin-bottom: var(--sp-6); }

/* ===== CONTACT FORM ===== */
.contact-grid { display: grid; grid-template-columns: 1fr; gap: var(--sp-6); max-width: 900px; margin: 0 auto; padding: var(--sp-8) var(--sp-4); }
@media (min-width: 768px) { .contact-grid { grid-template-columns: 1fr 1.3fr; align-items: start; } }
.contact-info { display: flex; flex-direction: column; gap: var(--sp-4); }
.contact-info-card { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: var(--sp-4); }
.contact-info-card h3 { font-size: var(--fs-sm); margin: 0 0 var(--sp-1); color: var(--color-accent); text-transform: uppercase; letter-spacing: 0.5px; }
.contact-info-card p { margin: 0; font-size: var(--fs-sm); }
.contact-form { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: var(--sp-5); display: flex; flex-direction: column; gap: var(--sp-4); }
.form-row { display: flex; flex-direction: column; gap: var(--sp-1); }
.form-row label { font-size: var(--fs-sm); font-weight: 600; color: var(--color-text); }
.form-row input, .form-row textarea, .form-row select {
  padding: var(--sp-3); border-radius: var(--radius-sm); border: 1px solid var(--color-border);
  font-size: var(--fs-sm); font-family: inherit; color: var(--color-text); background: var(--color-bg);
  transition: var(--transition);
}
.form-row input:focus, .form-row textarea:focus, .form-row select:focus { outline: none; border-color: var(--color-primary); }
.form-row textarea { min-height: 130px; resize: vertical; }
.contact-success { display: none; padding: var(--sp-4); border-radius: var(--radius-sm); background: color-mix(in srgb, var(--color-success) 12%, var(--color-bg)); color: var(--color-success); font-size: var(--fs-sm); font-weight: 600; text-align: center; }
.contact-success.show { display: block; animation: fade-up 0.3s ease; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 600px) {
  .header__disclosure-link { display: none; }
  .hero-cta-row .cta, .news-form .cta { width: 100%; }
  .hero-cta-row { flex-direction: column; }
  .news-form { flex-direction: column; }
  .news-form input { width: 100%; }
}

@media (prefers-color-scheme: dark) {
  :root { color-scheme: dark; }
}