/* =========================================================================
   SISTO Security — Design System (inquiries@sistosecurity.com)
   Darkmode first & lightmode supported via ([data-theme="light"]).
   ========================================================================= */
/**/
:root {
  /* Brand palette */
  --charcoal: #1a1a1a;
  --off-white: #f5f3f0;
  --steel-blue: #4a6fa5;
  --burnt-orange: #c85c2d;
  --sage-green: #7d9d7d;

  /* Semantic tokens — dark theme */
  --bg-primary: #1a1a1a;
  --bg-secondary: #222222;
  --bg-elevated: #2a2a2a;
  --bg-card: #232323;

  --text-primary: #f5f3f0;
  --text-secondary: #b9b6b0;
  --text-muted: #8a8780;

  --accent-primary: #5a82bd;
  --accent-primary-strong: #4a6fa5;
  --accent-secondary: #d96e3f;   /* burnt orange */
  --accent-success: #7d9d7d;     /* sage green */

  --border: #353535;
  --border-strong: #454545;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.45);

  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --radius: 10px;
  --radius-lg: 16px;
  --maxw: 1140px;
  --header-h: 72px;
}

[data-theme="light"] {
  --bg-primary: #f5f3f0;
  --bg-secondary: #ece9e3;
  --bg-elevated: #ffffff;
  --bg-card: #ffffff;

  --text-primary: #1a1a1a;
  --text-secondary: #44423d;
  --text-muted: #6c6960;

  --accent-primary: #4a6fa5;
  --accent-primary-strong: #3d5d8c;
  --accent-secondary: #c85c2d;
  --accent-success: #5f7f5f;

  --border: #d9d4cc;
  --border-strong: #c5bfb4;

  --shadow-sm: 0 1px 2px rgba(26, 26, 26, 0.08);
  --shadow-md: 0 8px 24px rgba(26, 26, 26, 0.10);
  --shadow-lg: 0 20px 50px rgba(26, 26, 26, 0.14);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.3s ease, color 0.3s ease;
}

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

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--accent-secondary);
}

h1,
h2,
h3,
h4 {
  line-height: 1.2;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-primary);
}

/* ----------------------------- Utilities ------------------------------- */
.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: 1.5rem;
}

.section {
  padding-block: 5rem;
}

.section--tight {
  padding-block: 3.5rem;
}

.section__head {
  max-width: 760px;
  margin-bottom: 3rem;
}

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-primary);
  margin-bottom: 1rem;
}

.section__title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  text-wrap: balance;
}

.section__subtitle {
  margin-top: 1rem;
  color: var(--text-secondary);
  font-size: 1.075rem;
  max-width: 60ch;
}

.text-accent {
  color: var(--accent-secondary);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ------------------------------ Buttons -------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius);
  font-size: 0.975rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background-color 0.2s ease,
    box-shadow 0.2s ease, border-color 0.2s ease, color 0.2s ease;
  white-space: nowrap;
}

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

.btn--primary {
  background: linear-gradient(135deg, var(--accent-primary), var(--accent-primary-strong));
  color: #ffffff;
  box-shadow: var(--shadow-md);
}

.btn--primary:hover {
  color: #ffffff;
  box-shadow: var(--shadow-lg);
}

.btn--accent {
  background: linear-gradient(135deg, var(--accent-secondary), #b04e25);
  color: #ffffff;
  box-shadow: var(--shadow-md);
}

.btn--accent:hover {
  color: #ffffff;
}

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

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

.btn--block {
  width: 100%;
}

.btn--lg {
  padding: 1.05rem 2rem;
  font-size: 1.05rem;
}

/* ------------------------------- Header -------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: var(--header-h);
  background: color-mix(in srgb, var(--bg-primary) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav {
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: 0.04em;
  color: var(--text-primary);
}

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

.brand__mark {
  width: 44px;
  height: 44px;
  border-radius: 8px;
  object-fit: contain;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  list-style: none;
}

.nav__link {
  display: inline-block;
  padding: 0.5rem 0.9rem;
  border-radius: 8px;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 0.95rem;
}

.nav__link:hover,
.nav__link.is-active {
  color: var(--text-primary);
  background: var(--bg-elevated);
}

.nav__actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  cursor: pointer;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.theme-toggle:hover {
  color: var(--text-primary);
  border-color: var(--accent-primary);
}

.theme-toggle .icon-sun {
  display: none;
}

[data-theme="light"] .theme-toggle .icon-sun {
  display: block;
}

[data-theme="light"] .theme-toggle .icon-moon {
  display: none;
}

.nav__cta {
  display: inline-flex;
}

/* Mobile menu button */
.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  cursor: pointer;
}

.nav__toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin-inline: auto;
  background: var(--text-primary);
  transition: transform 0.25s ease, opacity 0.2s ease;
}

.nav__toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.nav__toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav__toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* -------------------------------- Hero --------------------------------- */
.hero {
  position: relative;
  overflow: hidden;
  padding-block: clamp(4rem, 9vw, 7.5rem);
  background:
    radial-gradient(900px 500px at 75% -10%, color-mix(in srgb, var(--accent-primary) 22%, transparent), transparent 60%),
    radial-gradient(700px 400px at 5% 110%, color-mix(in srgb, var(--accent-secondary) 14%, transparent), transparent 55%),
    var(--bg-primary);
}

.hero__inner {
  max-width: 820px;
}

.hero__title {
  font-size: clamp(2.5rem, 7vw, 4.5rem);
  line-height: 1.05;
  text-wrap: balance;
}

.hero__subtitle {
  margin-top: 1.5rem;
  font-size: clamp(1.1rem, 2.2vw, 1.35rem);
  color: var(--text-secondary);
  max-width: 60ch;
}

.hero__actions {
  margin-top: 2.25rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.hero__note {
  margin-top: 1.5rem;
  font-size: 0.95rem;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.hero__note .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-success);
}

/* ------------------------------- Cards --------------------------------- */
.grid {
  display: grid;
  gap: 1.5rem;
}

.grid--3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid--2 {
  grid-template-columns: repeat(2, 1fr);
}

.grid--4 {
  grid-template-columns: repeat(4, 1fr);
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, border-color 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
  transform: translateY(-4px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-md);
}

.card__icon {
  width: 48px;
  height: 48px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 10px;
  background: color-mix(in srgb, var(--accent-primary) 16%, transparent);
  color: var(--accent-primary);
  margin-bottom: 1.25rem;
}

.card__title {
  font-size: 1.25rem;
  margin-bottom: 0.75rem;
}

.card__text {
  color: var(--text-secondary);
  font-size: 0.975rem;
}

.card__list {
  list-style: none;
  margin: 1.1rem 0 0;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
}

.card__list li {
  position: relative;
  padding-left: 1.5rem;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.card__list li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 0.55em;
  width: 7px;
  height: 7px;
  border-radius: 2px;
  background: var(--accent-success);
}

.card__cta {
  margin-top: auto;
  padding-top: 1.5rem;
}

/* ---------------------------- Reality strip ---------------------------- */
.reality {
  background: var(--bg-secondary);
  border-block: 1px solid var(--border);
}

.reality__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3rem;
  align-items: center;
}

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

.stat {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.stat__num {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-secondary);
  letter-spacing: -0.03em;
}

.stat__label {
  margin-top: 0.35rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* ------------------------------ Tables --------------------------------- */
.compare {
  width: 100%;
  border-collapse: collapse;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.compare th,
.compare td {
  text-align: left;
  padding: 1.1rem 1.4rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
  font-size: 0.975rem;
}

.compare thead th {
  background: var(--bg-elevated);
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
}

.compare thead th:last-child {
  color: var(--accent-success);
}

.compare tbody tr:last-child td {
  border-bottom: none;
}

.compare td:first-child {
  color: var(--text-secondary);
}

.compare td:last-child {
  color: var(--text-primary);
  font-weight: 500;
}

/* --------------------------- Feature rows ------------------------------ */
.featrow {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.feat {
  display: flex;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.feat__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 9px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--accent-secondary) 16%, transparent);
  color: var(--accent-secondary);
}

.feat__title {
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}

.feat__text {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ------------------------------ Steps ---------------------------------- */
.steps {
  counter-reset: step;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.step {
  position: relative;
  padding: 1.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
}

.step__num {
  counter-increment: step;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-primary);
  letter-spacing: 0.08em;
}

.step__num::before {
  content: "0" counter(step);
}

.step__title {
  font-size: 1.1rem;
  margin: 0.75rem 0 0.5rem;
}

.step__text {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

/* ------------------------------- Pills --------------------------------- */
.pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.pill {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 500;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

/* ------------------------------- CTA ----------------------------------- */
.cta {
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-lg);
  padding: clamp(2.5rem, 5vw, 4rem);
  background:
    radial-gradient(700px 300px at 80% -20%, color-mix(in srgb, var(--accent-primary) 30%, transparent), transparent 60%),
    linear-gradient(135deg, var(--bg-elevated), var(--bg-secondary));
  border: 1px solid var(--border-strong);
  text-align: center;
}

.cta__title {
  font-size: clamp(1.75rem, 4vw, 2.75rem);
  text-wrap: balance;
}

.cta__text {
  margin: 1rem auto 0;
  max-width: 52ch;
  color: var(--text-secondary);
  font-size: 1.075rem;
}

.cta__actions {
  margin-top: 2rem;
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ------------------------------ Forms ---------------------------------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.1fr;
  gap: 3rem;
  align-items: start;
}

.form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.field label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-secondary);
}

.field input,
.field textarea {
  width: 100%;
  padding: 0.8rem 1rem;
  border-radius: var(--radius);
  background: var(--bg-primary);
  border: 1px solid var(--border-strong);
  color: var(--text-primary);
  font-family: inherit;
  font-size: 0.975rem;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.field input:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--accent-primary);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--accent-primary) 25%, transparent);
}

.field textarea {
  resize: vertical;
  min-height: 130px;
}

.form__note {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Flash messages */
.flash {
  padding: 0.9rem 1.1rem;
  border-radius: var(--radius);
  font-size: 0.95rem;
  border: 1px solid transparent;
}

.flash--success {
  background: color-mix(in srgb, var(--accent-success) 18%, transparent);
  border-color: var(--accent-success);
  color: var(--text-primary);
}

.flash--error {
  background: color-mix(in srgb, var(--accent-secondary) 18%, transparent);
  border-color: var(--accent-secondary);
  color: var(--text-primary);
}

/* Contact aside */
.contact-info {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.info-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.info-item__icon {
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  border-radius: 9px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: color-mix(in srgb, var(--accent-primary) 16%, transparent);
  color: var(--accent-primary);
}

.info-item__label {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.info-item__value {
  font-weight: 600;
  color: var(--text-primary);
}

/* --------------------------- Page header ------------------------------- */
.page-hero {
  padding-block: clamp(3.5rem, 7vw, 5.5rem);
  background:
    radial-gradient(800px 400px at 80% -30%, color-mix(in srgb, var(--accent-primary) 18%, transparent), transparent 60%),
    var(--bg-secondary);
  border-bottom: 1px solid var(--border);
}

.page-hero__title {
  font-size: clamp(2rem, 5vw, 3.25rem);
  text-wrap: balance;
}

.page-hero__text {
  margin-top: 1rem;
  max-width: 60ch;
  color: var(--text-secondary);
  font-size: 1.1rem;
}

/* ------------------------------ Prose ---------------------------------- */
.prose p {
  color: var(--text-secondary);
  margin-bottom: 1.1rem;
  max-width: 68ch;
}

.prose h3 {
  font-size: 1.4rem;
  margin: 2rem 0 0.75rem;
}

/* ------------------------------ Footer --------------------------------- */
.site-footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  padding-block: 3.5rem 2rem;
  margin-top: 2rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1.3fr;
  gap: 2.5rem;
}

.footer__tagline {
  margin-top: 1rem;
  color: var(--text-secondary);
  max-width: 38ch;
}

.footer__col h4 {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.footer__list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer__list a,
.footer__list span {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.footer__bottom {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* ----------------------------- Responsive ------------------------------ */
@media (max-width: 920px) {
  .reality__grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .grid--3,
  .grid--4,
  .steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .nav__links {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    padding: 0.75rem 1.5rem 1.25rem;
    transform: translateY(-120%);
    opacity: 0;
    pointer-events: none;
    transition: transform 0.3s ease, opacity 0.25s ease;
  }

  .nav__links.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav__link {
    padding: 0.85rem 0.5rem;
    border-bottom: 1px solid var(--border);
  }

  .nav__cta {
    display: none;
  }

  .nav__toggle {
    display: flex;
  }

  .grid--3,
  .grid--4,
  .grid--2,
  .steps,
  .featrow,
  .stat-grid,
  .footer-grid {
    grid-template-columns: 1fr;
  }

  .section {
    padding-block: 3.5rem;
  }

  .compare th,
  .compare td {
    padding: 0.85rem 1rem;
    font-size: 0.9rem;
  }
}

@media (max-width: 560px) {
  .hero__actions,
  .cta__actions {
    flex-direction: column;
    align-items: stretch;
  }

  .hero__actions .btn,
  .cta__actions .btn {
    width: 100%;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto !important;
    transition: none !important;
  }
}