/* =============================================================
   drone.domains — serious B2B counter-drone portfolio
   Palette: deep navy / charcoal + warm signal amber accent
   Typography: IBM Plex Sans (body+display) + IBM Plex Mono (tags)
   ============================================================= */

:root {
  /* Type scale */
  --text-xs: clamp(0.75rem, 0.7rem + 0.25vw, 0.875rem);
  --text-sm: clamp(0.875rem, 0.8rem + 0.35vw, 1rem);
  --text-base: clamp(1rem, 0.95rem + 0.25vw, 1.125rem);
  --text-lg: clamp(1.125rem, 1rem + 0.75vw, 1.5rem);
  --text-xl: clamp(1.5rem, 1.2rem + 1.25vw, 2.25rem);
  --text-2xl: clamp(2rem, 1.2rem + 2.5vw, 3.5rem);
  --text-3xl: clamp(2.5rem, 1rem + 4vw, 5rem);

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  --space-32: 8rem;

  /* Color — defense / counter-UAS dark palette */
  --color-bg: #0a121d;          /* near-black navy */
  --color-surface: #0f1a28;     /* card surface */
  --color-surface-2: #14223338;
  --color-surface-elevated: #16243a;
  --color-divider: #1f2e44;
  --color-border: #25364f;

  --color-text: #e8edf4;
  --color-text-muted: #97a4b8;
  --color-text-faint: #5b6a82;
  --color-text-inverse: #0a121d;

  /* Accent — signal amber (radar / aviation marker) */
  --color-primary: #e4b859;
  --color-primary-hover: #f0c873;
  --color-primary-active: #c89c3e;
  --color-primary-soft: #e4b85920;

  /* Secondary muted blue (info, hyperlinks in body) */
  --color-link: #7aa6d6;
  --color-link-hover: #a3c2e3;

  /* Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 6px 18px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 24px 48px rgba(0, 0, 0, 0.45);

  /* Transitions */
  --transition: 180ms cubic-bezier(0.16, 1, 0.3, 1);

  /* Widths */
  --content-narrow: 640px;
  --content-default: 1080px;
  --content-wide: 1240px;

  /* Fonts */
  --font-body: "IBM Plex Sans", "Inter", "Helvetica Neue", sans-serif;
  --font-display: "IBM Plex Sans", "Inter", "Helvetica Neue", sans-serif;
  --font-mono: "IBM Plex Mono", "JetBrains Mono", ui-monospace, monospace;
}

/* =========== Base reset =========== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  scroll-behavior: smooth;
  scroll-padding-top: var(--space-16);
}

body {
  min-height: 100dvh;
  line-height: 1.6;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-text);
  background-color: var(--color-bg);
  background-image:
    radial-gradient(circle at 12% 18%, rgba(228, 184, 89, 0.04), transparent 40%),
    radial-gradient(circle at 88% 78%, rgba(122, 166, 214, 0.04), transparent 45%);
}

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

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

h1, h2, h3, h4 {
  text-wrap: balance;
  line-height: 1.15;
  font-weight: 600;
  letter-spacing: -0.01em;
}
p {
  text-wrap: pretty;
  max-width: 68ch;
}

::selection {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}

:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

button {
  cursor: pointer;
  background: none;
  border: none;
  font: inherit;
  color: inherit;
}

ul[role="list"] {
  list-style: none;
}

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

/* =========== Layout primitives =========== */
.container {
  width: 100%;
  max-width: var(--content-wide);
  margin-inline: auto;
  padding-inline: clamp(var(--space-4), 4vw, var(--space-12));
}

.section {
  padding-block: clamp(var(--space-16), 9vw, var(--space-32));
  border-top: 1px solid var(--color-divider);
}

.section__header {
  max-width: 760px;
  margin-bottom: clamp(var(--space-10), 5vw, var(--space-16));
}

.section__lede {
  margin-top: var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-base);
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}

/* =========== Header =========== */
.header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 18, 29, 0.85);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-divider);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-weight: 500;
  font-size: var(--text-sm);
  letter-spacing: 0.02em;
}
.logo:hover {
  color: var(--color-primary);
}
.logo__mark {
  color: var(--color-primary);
}
.logo__text {
  font-family: var(--font-mono);
}
.logo__dot {
  color: var(--color-primary);
}

.nav {
  display: flex;
  gap: clamp(var(--space-4), 2.5vw, var(--space-8));
}
.nav a {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
}
.nav a:hover {
  color: var(--color-text);
}

/* =========== Hero =========== */
.hero {
  position: relative;
  isolation: isolate;
  padding-block: clamp(var(--space-20), 10vw, var(--space-32));
  overflow: hidden;
  border-bottom: 1px solid var(--color-divider);
}

.hero__bg {
  position: absolute;
  inset: 0;
  background-image: url("assets/hero.png");
  background-size: cover;
  background-position: center right;
  opacity: 0.55;
  z-index: -2;
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background:
    linear-gradient(90deg, rgba(10, 18, 29, 0.96) 0%, rgba(10, 18, 29, 0.82) 45%, rgba(10, 18, 29, 0.55) 80%, rgba(10, 18, 29, 0.4) 100%),
    linear-gradient(180deg, rgba(10, 18, 29, 0.4) 0%, rgba(10, 18, 29, 0.7) 100%);
  z-index: -1;
}

.hero__inner {
  max-width: 920px;
  position: relative;
}

.hero__title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.08;
  margin-bottom: var(--space-6);
  max-width: 22ch;
}

.hero__lede {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 60ch;
  margin-bottom: var(--space-10);
  line-height: 1.65;
}

.hero__cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-bottom: var(--space-16);
}

.hero__stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: var(--space-8);
  padding-top: var(--space-8);
  border-top: 1px solid var(--color-divider);
  max-width: 720px;
}
.hero__stats > div {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.hero__stats dt {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}
.hero__stats dd {
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-text);
  font-family: var(--font-mono);
}

/* =========== Buttons =========== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-sm);
  font-weight: 500;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  border-radius: var(--radius-md);
  transition: all var(--transition);
  border: 1px solid transparent;
  min-height: 44px;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
}
.btn--primary:hover {
  background: var(--color-primary-hover);
  color: var(--color-text-inverse);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

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

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

/* =========== About =========== */
.about__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(var(--space-8), 4vw, var(--space-16));
}
@media (min-width: 880px) {
  .about__grid {
    grid-template-columns: 1fr 1.4fr;
  }
}

.about__heading h2 {
  font-size: var(--text-xl);
  letter-spacing: -0.015em;
  max-width: 18ch;
}

.about__body p {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  line-height: 1.7;
}
.about__body p + p {
  margin-top: var(--space-5);
}

/* =========== Portfolio =========== */
.portfolio header h2 {
  font-size: var(--text-xl);
  letter-spacing: -0.015em;
}

.domain-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-6);
}

.domain-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition);
  position: relative;
}
.domain-card:hover {
  border-color: var(--color-primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.domain-card--premium {
  background: linear-gradient(160deg, var(--color-surface-elevated), var(--color-surface));
  border-color: var(--color-primary-soft);
}
.domain-card--premium::before {
  content: "";
  position: absolute;
  top: 0;
  left: var(--space-6);
  right: var(--space-6);
  height: 2px;
  background: var(--color-primary);
  border-radius: 0 0 2px 2px;
}

.domain-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.domain-card__tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 2px 8px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}
.domain-card--premium .domain-card__tag {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.domain-card__price {
  font-family: var(--font-mono);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text);
}

.domain-card__name {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: 500;
  letter-spacing: -0.005em;
  color: var(--color-text);
  word-break: break-word;
}

.domain-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.55;
  flex-grow: 1;
}

.domain-card__cta {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-primary);
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-divider);
  align-self: stretch;
}
.domain-card__cta:hover {
  color: var(--color-primary-hover);
}

.portfolio__footnote {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 1px solid var(--color-divider);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* =========== Process =========== */
.process__steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-8);
  list-style: none;
  counter-reset: step;
}
.process__steps li {
  padding: var(--space-6);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
}
.process__num {
  display: block;
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  color: var(--color-primary);
  margin-bottom: var(--space-4);
}
.process__steps h3 {
  font-size: var(--text-lg);
  font-weight: 600;
  margin-bottom: var(--space-3);
  color: var(--color-text);
}
.process__steps p {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* =========== Contact =========== */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(var(--space-10), 5vw, var(--space-16));
  align-items: start;
}
@media (min-width: 900px) {
  .contact__grid {
    grid-template-columns: 1fr 1.1fr;
  }
}

.contact__heading h2 {
  font-size: var(--text-xl);
  letter-spacing: -0.015em;
  max-width: 16ch;
}

.contact__lede {
  margin-top: var(--space-4);
  color: var(--color-text-muted);
  font-size: var(--text-base);
}

.contact__list {
  margin-top: var(--space-8);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.contact__list li {
  display: grid;
  grid-template-columns: 130px 1fr;
  gap: var(--space-4);
  padding-top: var(--space-3);
  border-top: 1px solid var(--color-divider);
  font-size: var(--text-sm);
}
.contact__list li:first-child {
  border-top-color: var(--color-border);
}
.contact__label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  align-self: center;
}

.contact__cta {
  margin-top: var(--space-8);
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  font-size: var(--text-sm);
}

.contact__panel {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: clamp(var(--space-6), 3vw, var(--space-10));
}
.contact__panel-title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: var(--space-6);
}
.contact__panel .contact__list {
  margin-top: 0;
}

/* =========== Footer =========== */
.footer {
  padding-block: var(--space-12);
  border-top: 1px solid var(--color-divider);
  background: var(--color-surface);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.footer__inner {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-8);
}
@media (min-width: 720px) {
  .footer__inner {
    grid-template-columns: 1fr 1.2fr;
    align-items: end;
  }
  .footer__meta {
    text-align: right;
  }
}
.footer__brand p {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  max-width: 36ch;
}
.footer__copy {
  margin-top: var(--space-2);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  font-family: var(--font-mono);
}

/* =========== Mobile refinements =========== */
@media (max-width: 600px) {
  .nav {
    gap: var(--space-4);
  }
  .nav a:nth-child(2) {
    display: none; /* hide About link on small screens to keep header tidy */
  }
  .hero {
    padding-block: var(--space-16);
  }
  .domain-card {
    padding: var(--space-5);
  }
  .contact__list li {
    grid-template-columns: 1fr;
    gap: var(--space-1);
  }
}