/* IdeaSec — folha de estilos principal */

:root {
  --bg: #0b0f14;
  --bg-alt: #10161d;
  --surface: #141b24;
  --surface-2: #1a2330;
  --border: #243142;
  --text: #d7e0ea;
  --text-muted: #8b9bb0;
  --accent: #3ddc97;
  --accent-2: #4cc9f0;
  --accent-ink: #062016;
  --danger: #ff5d73;
  --warn: #ffb547;
  --medium: #ffd166;
  --low: #4cc9f0;
  --none: #8b9bb0;
  --radius: 10px;
  --radius-sm: 6px;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --mono: ui-monospace, "JetBrains Mono", "Fira Code", "Cascadia Code", Menlo, Consolas, monospace;
  --sans: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --max: 1160px;
  color-scheme: dark;
}

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

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  overflow-x: hidden;
}

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

a {
  color: var(--accent-2);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

code,
kbd,
pre,
.mono {
  font-family: var(--mono);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.container {
  width: 100%;
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 16px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 8px;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  z-index: 100;
}

.skip-link:focus {
  left: 8px;
}

/* ---------- Header / navegação ---------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 15, 20, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  gap: 16px;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--text);
  font-family: var(--mono);
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: 0.02em;
}

.brand:hover {
  text-decoration: none;
}

.brand svg {
  width: 28px;
  height: 28px;
}

.brand-name span {
  color: var(--accent);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  display: block;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  font-size: 0.95rem;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--text);
  background: var(--surface);
  text-decoration: none;
}

.nav-links a[aria-current="page"] {
  color: var(--accent);
}

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 6px 10px;
  font-family: var(--mono);
  cursor: pointer;
}

@media (max-width: 760px) {
  .nav-toggle {
    display: inline-block;
  }

  .nav-links {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--bg-alt);
    border-bottom: 1px solid var(--border);
    padding: 8px 16px 16px;
    display: none;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 12px;
  }
}

/* ---------- Botões ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  transition: border-color 0.15s, background 0.15s, transform 0.15s;
}

.btn:hover {
  border-color: var(--accent);
  text-decoration: none;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

.btn-primary:hover {
  background: #5ef0b0;
}

.btn-sm {
  padding: 6px 12px;
  font-size: 0.875rem;
}

/* ---------- Hero ---------- */

.hero {
  position: relative;
  padding: 88px 0 72px;
  overflow: hidden;
  border-bottom: 1px solid var(--border);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(61, 220, 151, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(61, 220, 151, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at 30% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse at 30% 40%, #000 30%, transparent 75%);
  pointer-events: none;
}

.hero-grid {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 48px;
  align-items: center;
}

@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
  }
}

.eyebrow {
  display: inline-block;
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--accent);
  border: 1px solid rgba(61, 220, 151, 0.35);
  background: rgba(61, 220, 151, 0.08);
  padding: 4px 10px;
  border-radius: 999px;
  margin-bottom: 18px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3.2rem);
  line-height: 1.15;
  margin: 0 0 18px;
  letter-spacing: -0.02em;
}

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

.hero p.lead {
  font-size: 1.125rem;
  color: var(--text-muted);
  margin: 0 0 28px;
  max-width: 560px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* Terminal decorativo */

.terminal {
  background: #070a0e;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  font-family: var(--mono);
  font-size: 0.875rem;
  min-width: 0;
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.terminal-bar i {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: #3a4656;
}

.terminal-bar i:nth-child(1) {
  background: #ff5f57;
}

.terminal-bar i:nth-child(2) {
  background: #febc2e;
}

.terminal-bar i:nth-child(3) {
  background: #28c840;
}

.terminal-bar span {
  margin-left: 8px;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.terminal-body {
  padding: 16px 18px;
  min-height: 260px;
  white-space: pre-wrap;
  word-break: break-word;
  color: #b7c4d4;
}

.terminal-body .prompt {
  color: var(--accent);
}

.terminal-body .ok {
  color: var(--accent);
}

.terminal-body .info {
  color: var(--accent-2);
}

.terminal-body .warn {
  color: var(--warn);
}

.cursor {
  display: inline-block;
  width: 8px;
  height: 1em;
  background: var(--accent);
  vertical-align: text-bottom;
  animation: blink 1s steps(1) infinite;
}

@keyframes blink {
  50% {
    opacity: 0;
  }
}

/* ---------- Seções ---------- */

.section {
  padding: 80px 0;
  border-bottom: 1px solid var(--border);
}

.section.alt {
  background: var(--bg-alt);
}

.section-head {
  max-width: 720px;
  margin-bottom: 40px;
}

.section-head .tag {
  font-family: var(--mono);
  color: var(--accent);
  font-size: 0.85rem;
}

.section-head h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  margin: 6px 0 12px;
  letter-spacing: -0.01em;
}

.section-head p {
  color: var(--text-muted);
  margin: 0;
}

.page-head {
  padding: 56px 0 32px;
  border-bottom: 1px solid var(--border);
}

.page-head h1 {
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin: 0 0 10px;
}

.page-head p {
  color: var(--text-muted);
  margin: 0;
  max-width: 720px;
}

/* ---------- Cards ---------- */

.grid {
  display: grid;
  gap: 20px;
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 420px), 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 280px), 1fr));
}

.grid-4 {
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 240px), 1fr));
}

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: border-color 0.2s, transform 0.2s;
  min-width: 0;
}

.card:hover {
  border-color: rgba(61, 220, 151, 0.5);
}

.card .icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: grid;
  place-items: center;
  background: rgba(61, 220, 151, 0.1);
  color: var(--accent);
  margin-bottom: 16px;
}

.card .icon svg {
  width: 24px;
  height: 24px;
}

.card h3 {
  margin: 0 0 8px;
  font-size: 1.15rem;
}

.card p {
  margin: 0 0 12px;
  color: var(--text-muted);
}

.card ul {
  margin: 0;
  padding-left: 18px;
  color: var(--text-muted);
  font-size: 0.925rem;
}

.card ul li {
  margin-bottom: 4px;
}

.card a.more {
  font-family: var(--mono);
  font-size: 0.9rem;
}

/* ---------- Metodologia (timeline) ---------- */

.steps {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  counter-reset: step;
}

@media (max-width: 860px) {
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 520px) {
  .steps {
    grid-template-columns: 1fr;
  }
}

.steps li {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  counter-increment: step;
}

.steps li::before {
  content: "0" counter(step);
  display: block;
  font-family: var(--mono);
  color: var(--accent);
  font-size: 0.85rem;
  margin-bottom: 8px;
}

.steps h3 {
  margin: 0 0 6px;
  font-size: 1.05rem;
}

.steps p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.925rem;
}

/* ---------- Estatísticas / destaques ---------- */

.stats {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 16px;
}

.stat {
  border-left: 3px solid var(--accent);
  padding: 8px 16px;
}

.stat strong {
  display: block;
  font-family: var(--mono);
  font-size: 1.4rem;
  color: var(--text);
}

.stat span {
  color: var(--text-muted);
  font-size: 0.925rem;
}

/* ---------- Formulários ---------- */

label {
  display: block;
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

input[type="text"],
input[type="email"],
input[type="search"],
select,
textarea {
  width: 100%;
  background: #0a0e13;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text);
  padding: 10px 12px;
  font: inherit;
  font-size: 0.95rem;
}

textarea {
  font-family: var(--mono);
  font-size: 0.875rem;
  resize: vertical;
  min-height: 140px;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(61, 220, 151, 0.15);
}

.field {
  margin-bottom: 16px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

@media (max-width: 600px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

.hint {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ---------- Abas ---------- */

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 32px 0 24px;
  border-bottom: 1px solid var(--border);
}

.tab {
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  color: var(--text-muted);
  padding: 10px 14px;
  font: inherit;
  font-weight: 600;
  cursor: pointer;
  margin-bottom: -1px;
}

.tab:hover {
  color: var(--text);
}

.tab[aria-selected="true"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.tab-panel[hidden] {
  display: none;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 48px;
}

.panel h2 {
  margin-top: 0;
  font-size: 1.3rem;
}

.panel > p.desc {
  color: var(--text-muted);
  margin-top: -4px;
}

/* ---------- CVSS ---------- */

.cvss-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: 20px;
}

.metric legend {
  font-weight: 600;
  margin-bottom: 8px;
  font-size: 0.95rem;
  padding: 0;
}

.metric {
  border: none;
  margin: 0;
  padding: 0;
  min-width: 0;
}

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

.seg input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.seg label {
  margin: 0;
  padding: 6px 10px;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: #0a0e13;
  color: var(--text-muted);
  cursor: pointer;
  font-size: 0.85rem;
  user-select: none;
}

.seg input:checked + label {
  border-color: var(--accent);
  background: rgba(61, 220, 151, 0.12);
  color: var(--accent);
}

.seg input:focus-visible + label {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.cvss-result {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 20px;
  margin-top: 28px;
  padding: 20px;
  border-radius: var(--radius);
  background: #0a0e13;
  border: 1px solid var(--border);
}

.score {
  font-family: var(--mono);
  font-size: 2.6rem;
  font-weight: 700;
  line-height: 1;
}

.sev {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.sev-none {
  background: rgba(139, 155, 176, 0.15);
  color: var(--none);
}

.sev-low {
  background: rgba(76, 201, 240, 0.15);
  color: var(--low);
}

.sev-medium {
  background: rgba(255, 209, 102, 0.15);
  color: var(--medium);
}

.sev-high {
  background: rgba(255, 181, 71, 0.18);
  color: var(--warn);
}

.sev-critical {
  background: rgba(255, 93, 115, 0.18);
  color: var(--danger);
}

.vector {
  flex: 1 1 280px;
  min-width: 0;
}

.vector code {
  display: block;
  padding: 10px 12px;
  background: var(--surface);
  border-radius: var(--radius-sm);
  word-break: break-all;
  font-size: 0.875rem;
}

.sub-scores {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 6px;
}

/* ---------- Encoder ---------- */

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin: 12px 0;
}

.toolbar select {
  width: auto;
  min-width: 180px;
}

.toolbar input[type="text"] {
  flex: 1 1 280px;
  width: auto;
  min-width: 0;
}

.out {
  background: #0a0e13;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px;
  font-family: var(--mono);
  font-size: 0.875rem;
  white-space: pre-wrap;
  word-break: break-all;
  min-height: 60px;
  margin: 0;
}

.error {
  color: var(--danger);
  font-size: 0.875rem;
  margin-top: 8px;
}

/* ---------- Analisador de headers ---------- */

.header-report {
  list-style: none;
  margin: 20px 0 0;
  padding: 0;
  display: grid;
  gap: 10px;
}

.header-report li {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 12px;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  background: #0a0e13;
  border: 1px solid var(--border);
  border-left-width: 3px;
}

.header-report li.pass {
  border-left-color: var(--accent);
}

.header-report li.warn {
  border-left-color: var(--warn);
}

.header-report li.fail {
  border-left-color: var(--danger);
}

.header-report .badge {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
  align-self: start;
  margin-top: 2px;
}

.pass .badge {
  background: rgba(61, 220, 151, 0.15);
  color: var(--accent);
}

.warn .badge {
  background: rgba(255, 181, 71, 0.15);
  color: var(--warn);
}

.fail .badge {
  background: rgba(255, 93, 115, 0.15);
  color: var(--danger);
}

.header-report strong {
  font-family: var(--mono);
  font-size: 0.9rem;
  word-break: break-word;
}

.header-report p {
  grid-column: 2;
  margin: 0;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.grade {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  margin-top: 16px;
}

.grade .score {
  font-size: 2rem;
}

/* ---------- Checklist ---------- */

.progress-wrap {
  position: sticky;
  top: 64px;
  z-index: 10;
  background: var(--bg);
  padding: 16px 0;
  border-bottom: 1px solid var(--border);
}

.progress-info {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 10px;
}

.progress-info .mono {
  color: var(--accent);
}

.progress {
  height: 8px;
  background: var(--surface-2);
  border-radius: 999px;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--accent), var(--accent-2));
  transition: width 0.3s;
}

.check-group {
  margin: 28px 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.check-group > summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  padding: 16px 20px;
  cursor: pointer;
  list-style: none;
  font-weight: 600;
}

.check-group > summary::-webkit-details-marker {
  display: none;
}

.check-group > summary::before {
  content: "▸";
  color: var(--accent);
  margin-right: 8px;
  transition: transform 0.2s;
  display: inline-block;
}

.check-group[open] > summary::before {
  transform: rotate(90deg);
}

.check-group > summary .title {
  flex: 1;
}

.check-group > summary .count {
  font-family: var(--mono);
  font-size: 0.85rem;
  color: var(--text-muted);
}

.check-items {
  list-style: none;
  margin: 0;
  padding: 0 20px 12px;
}

.check-items li {
  border-top: 1px solid var(--border);
  padding: 12px 0;
}

.check-items label {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 4px 12px;
  margin: 0;
  color: var(--text);
  font-size: 0.95rem;
  cursor: pointer;
}

.check-items input[type="checkbox"] {
  width: 18px;
  height: 18px;
  margin-top: 3px;
  accent-color: var(--accent);
}

.check-items .ref {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--accent-2);
  margin-right: 6px;
}

.check-items .desc {
  grid-column: 2;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.check-items input:checked ~ .text {
  color: var(--text-muted);
  text-decoration: line-through;
}

/* ---------- Contato ---------- */

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 40px;
}

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

.contact-list {
  list-style: none;
  padding: 0;
  margin: 24px 0 0;
}

.contact-list li {
  display: flex;
  gap: 12px;
  margin-bottom: 14px;
  color: var(--text-muted);
}

.contact-list li strong {
  color: var(--text);
  display: block;
}

.notice {
  font-size: 0.85rem;
  color: var(--text-muted);
  border-left: 3px solid var(--warn);
  padding: 8px 12px;
  background: rgba(255, 181, 71, 0.06);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
}

/* ---------- Footer ---------- */

.site-footer {
  padding: 40px 0;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 24px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-links a {
  color: var(--text-muted);
}

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

/* ---------- Utilitários ---------- */

.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 600;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  z-index: 200;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.js .reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s, transform 0.6s;
}

.js .reveal.visible {
  opacity: 1;
  transform: none;
}

.not-found {
  min-height: 60vh;
  display: grid;
  place-items: center;
  text-align: center;
  padding: 64px 0;
}

.not-found .code {
  font-family: var(--mono);
  font-size: clamp(4rem, 15vw, 8rem);
  color: var(--accent);
  line-height: 1;
}

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

  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }

  .js .reveal {
    opacity: 1;
    transform: none;
  }
}