/* ============================================================
   Sumzip — Design System
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@400;500;600;700&family=Inter:wght@400;500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* Color */
  --bg: #07080f;
  --bg-surface: #0d0f1a;
  --bg-elevated: #131524;
  --border: #1e2036;
  --border-soft: #16182a;

  --accent: #7c5cfc;
  --accent-dim: #5b3fd6;
  --accent-soft: rgba(124, 92, 252, 0.12);

  --alert: #ff6b5e;
  --alert-soft: rgba(255, 107, 94, 0.12);
  --caution: #f2b134;
  --caution-soft: rgba(242, 177, 52, 0.1);
  --safe: #34d399;
  --safe-soft: rgba(52, 211, 153, 0.1);

  --text: #e9e9f2;
  --text-muted: #9797ab;
  --text-faint: #5f5f74;

  /* Type */
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Layout */
  --max-width: 1120px;
  --radius: 10px;
  --radius-sm: 6px;
}

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

html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  background-image:
    radial-gradient(ellipse 900px 500px at 15% -10%, rgba(124, 92, 252, 0.09), transparent),
    radial-gradient(ellipse 700px 400px at 100% 10%, rgba(124, 92, 252, 0.05), transparent);
  background-repeat: no-repeat;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  letter-spacing: -0.01em;
  line-height: 1.15;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* ---------- Focus states ---------- */
a:focus-visible, button:focus-visible, input:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- Eyebrow / tag ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}

.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  padding: 4px 10px;
  border-radius: 100px;
  border: 1px solid var(--border);
  color: var(--text-muted);
  white-space: nowrap;
}

.tag--upi { color: var(--accent); border-color: rgba(124,92,252,0.35); background: var(--accent-soft); }
.tag--phishing { color: var(--alert); border-color: rgba(255,107,94,0.35); background: var(--alert-soft); }
.tag--social { color: var(--caution); border-color: rgba(242,177,52,0.35); background: var(--caution-soft); }
.tag--identity { color: var(--safe); border-color: rgba(52,211,153,0.35); background: var(--safe-soft); }
.tag--basics { color: #8ab4f8; border-color: rgba(138,180,248,0.35); background: rgba(138,180,248,0.1); }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(7, 8, 15, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-soft);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 24px;
}

.logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-mark {
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}

.nav-links {
  display: flex;
  gap: 32px;
  list-style: none;
  font-size: 14px;
  font-weight: 500;
}

.nav-links a {
  color: var(--text-muted);
  transition: color 0.15s ease;
  position: relative;
}
.nav-links a:hover, .nav-links a.active { color: var(--text); }
.nav-links a.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 0;
  width: 100%;
  height: 2px;
  background: var(--accent);
  border-radius: 2px;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  cursor: pointer;
}

@media (max-width: 760px) {
  .nav-links {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    background: var(--bg-surface);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }
  .nav-links.open { max-height: 400px; }
  .nav-links li { border-top: 1px solid var(--border-soft); width: 100%; }
  .nav-links a { display: block; padding: 16px 24px; }
  .nav-toggle { display: block; }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14px;
  padding: 12px 22px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-primary {
  background: var(--accent);
  color: #08050f;
}
.btn-primary:hover { background: #8f72ff; transform: translateY(-1px); }

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

/* ---------- Hero ---------- */
.hero {
  padding: 88px 0 72px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
}

.hero h1 {
  font-size: clamp(2.1rem, 4.2vw, 3.4rem);
  margin: 18px 0 20px;
}

.hero h1 .accent-word { color: var(--accent); }

.hero p.lede {
  font-size: 17px;
  color: var(--text-muted);
  max-width: 46ch;
  margin-bottom: 32px;
}

.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  gap: 32px;
  margin-top: 44px;
  padding-top: 28px;
  border-top: 1px solid var(--border-soft);
}

.hero-stat .num {
  font-family: var(--font-display);
  font-size: 26px;
  font-weight: 700;
  color: var(--text);
}
.hero-stat .label {
  font-size: 12px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ---------- Message Inspector (signature element) ---------- */
.inspector {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 30px 80px -30px rgba(0,0,0,0.6);
}

.inspector-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 16px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.inspector-header .dot-status {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: var(--alert);
}
.inspector-header .dot-status::before {
  content: '';
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--alert);
}

.inspector-bubble {
  background: var(--bg-elevated);
  border-radius: var(--radius);
  padding: 16px 18px;
  font-size: 14.5px;
  line-height: 1.55;
  position: relative;
  border: 1px solid var(--border-soft);
  min-height: 118px;
}

.inspector-bubble .flag {
  position: relative;
  border-bottom: 2px solid var(--alert);
  color: #ffb8b0;
  transition: opacity 0.4s ease;
}

.scan-line {
  position: absolute;
  left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  animation: scan 3.2s ease-in-out infinite;
}

@keyframes scan {
  0% { top: 0%; opacity: 0; }
  8% { opacity: 1; }
  50% { top: 100%; opacity: 1; }
  58% { opacity: 0; }
  100% { top: 100%; opacity: 0; }
}

.inspector-findings {
  margin-top: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.finding {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 12.5px;
  color: var(--text-muted);
  opacity: 0;
  transform: translateY(4px);
  animation: reveal 0.4s ease forwards;
}
.finding .icon { color: var(--alert); flex-shrink: 0; margin-top: 1px; }

@keyframes reveal {
  to { opacity: 1; transform: translateY(0); }
}

/* ---------- Section headers ---------- */
.section {
  padding: 72px 0;
}
.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}
.section-head h2 {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  margin-top: 10px;
}
.section-head .desc {
  color: var(--text-muted);
  font-size: 14.5px;
  max-width: 40ch;
}

/* ---------- Article cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
@media (max-width: 900px) { .card-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 620px) { .card-grid { grid-template-columns: 1fr; } }

.article-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.article-card:hover {
  border-color: rgba(124,92,252,0.4);
  transform: translateY(-3px);
}

.article-card .tags { display: flex; gap: 8px; flex-wrap: wrap; }

.article-card h3 {
  font-size: 18px;
  line-height: 1.35;
}

.article-card p {
  color: var(--text-muted);
  font-size: 14px;
  flex-grow: 1;
}

.article-card .meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-faint);
  padding-top: 12px;
  border-top: 1px solid var(--border-soft);
}

.article-card .read-more {
  color: var(--accent);
  font-weight: 600;
  font-size: 13px;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

/* ---------- Filter bar (blog page) ---------- */
.filter-bar {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 36px;
}
.filter-btn {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 8px 14px;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: all 0.15s ease;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}
.filter-btn:hover { border-color: var(--accent); color: var(--text); }
.filter-btn.active { background: var(--accent); border-color: var(--accent); color: #08050f; }

/* ---------- Why / trust section ---------- */
.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}
@media (max-width: 800px) { .why-grid { grid-template-columns: 1fr; } }

.why-card {
  padding: 26px;
  border: 1px solid var(--border-soft);
  border-radius: var(--radius);
}
.why-card .icon-wrap {
  width: 40px; height: 40px;
  border-radius: 9px;
  background: var(--accent-soft);
  display: flex; align-items: center; justify-content: center;
  color: var(--accent);
  margin-bottom: 16px;
}
.why-card h3 { font-size: 16px; margin-bottom: 8px; }
.why-card p { color: var(--text-muted); font-size: 14px; }

/* ---------- Newsletter / CTA band ---------- */
.cta-band {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 48px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.cta-band::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at 50% 0%, rgba(124,92,252,0.15), transparent 60%);
}
.cta-band > * { position: relative; }
.cta-band h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); margin-bottom: 10px; }
.cta-band p { color: var(--text-muted); margin-bottom: 26px; max-width: 50ch; margin-left: auto; margin-right: auto; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--border-soft);
  padding: 48px 0 32px;
  margin-top: 40px;
}
.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
}
@media (max-width: 700px) { .footer-grid { grid-template-columns: 1fr 1fr; } }

.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  margin-bottom: 14px;
}
.footer-col ul { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.footer-col a { color: var(--text-muted); font-size: 14px; transition: color 0.15s ease; }
.footer-col a:hover { color: var(--accent); }
.footer-col p { color: var(--text-muted); font-size: 14px; max-width: 32ch; }

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--border-soft);
  font-size: 13px;
  color: var(--text-faint);
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- Article page ---------- */
.article-header {
  padding: 56px 0 32px;
  border-bottom: 1px solid var(--border-soft);
}
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
  margin-bottom: 20px;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); }

.article-header h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin: 16px 0 18px;
  max-width: 20ch;
}
.article-header .dek {
  color: var(--text-muted);
  font-size: 17px;
  max-width: 60ch;
  margin-bottom: 24px;
}
.article-meta-row {
  display: flex;
  gap: 20px;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-faint);
  flex-wrap: wrap;
}

.article-body {
  max-width: 720px;
  margin: 0 auto;
  padding: 48px 24px 0;
}
.article-body h2 {
  font-size: 1.5rem;
  margin: 44px 0 16px;
}
.article-body h3 {
  font-size: 1.15rem;
  margin: 32px 0 12px;
}
.article-body p {
  margin-bottom: 18px;
  color: #d4d4e0;
  font-size: 16px;
}
.article-body ul, .article-body ol {
  margin: 0 0 20px 22px;
  color: #d4d4e0;
}
.article-body li { margin-bottom: 8px; }
.article-body strong { color: var(--text); }

.callout {
  border-radius: var(--radius);
  padding: 20px 22px;
  margin: 28px 0;
  border: 1px solid var(--border);
  font-size: 14.5px;
}
.callout .callout-label {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
  margin-bottom: 8px;
  display: block;
}
.callout--alert { background: var(--alert-soft); border-color: rgba(255,107,94,0.35); }
.callout--alert .callout-label { color: var(--alert); }
.callout--safe { background: var(--safe-soft); border-color: rgba(52,211,153,0.35); }
.callout--safe .callout-label { color: var(--safe); }
.callout--caution { background: var(--caution-soft); border-color: rgba(242,177,52,0.35); }
.callout--caution .callout-label { color: var(--caution); }

.callout p, .callout ul { color: var(--text); font-size: 14.5px; margin-bottom: 0; }
.callout ul { margin-top: 8px; }

.editable-block {
  border: 1px dashed rgba(124,92,252,0.5);
  background: var(--accent-soft);
  border-radius: var(--radius);
  padding: 20px 22px;
  margin: 28px 0;
  font-size: 14px;
  color: var(--text-muted);
}
.editable-block .editable-label {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 8px;
  display: block;
}

.example-msg {
  font-family: var(--font-mono);
  font-size: 13.5px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-soft);
  border-radius: var(--radius-sm);
  padding: 14px 16px;
  margin: 16px 0;
  color: #c9c9d8;
  white-space: pre-wrap;
}

.article-footer {
  max-width: 720px;
  margin: 56px auto 0;
  padding: 32px 24px 0;
  border-top: 1px solid var(--border-soft);
}

/* ---------- Blog index list rows (alt layout) ---------- */
.post-list { display: flex; flex-direction: column; }
.post-row {
  display: grid;
  grid-template-columns: 110px 1fr auto;
  gap: 20px;
  align-items: center;
  padding: 22px 0;
  border-bottom: 1px solid var(--border-soft);
  transition: opacity 0.2s ease;
}
.post-row:hover .post-title { color: var(--accent); }
.post-row .post-date {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-faint);
}
.post-title { font-size: 17px; font-weight: 600; margin-bottom: 6px; transition: color 0.15s ease; }
.post-excerpt { font-size: 13.5px; color: var(--text-muted); }
@media (max-width: 620px) {
  .post-row { grid-template-columns: 1fr; gap: 8px; }
}

/* ---------- Page hero (interior pages) ---------- */
.page-hero {
  padding: 64px 0 40px;
  border-bottom: 1px solid var(--border-soft);
}
.page-hero h1 { font-size: clamp(1.9rem, 4vw, 2.8rem); margin: 16px 0; }
.page-hero p { color: var(--text-muted); font-size: 16px; max-width: 60ch; }

/* ---------- misc ---------- */
.center { text-align: center; }
.mt-large { margin-top: 64px; }