/* ===== ISRRA Solutions — styles ===== */
:root {
  --bg: #0b0f14;
  --bg-alt: #0f141b;
  --card: #121922;
  --border: #1e2834;
  --text: #e8edf2;
  --text-dim: #93a1b3;
  --accent: #ff4d3d;
  --accent-2: #ff8a3d;
  --green: #3ddc84;
  --amber: #ffc53d;
  --red: #ff4d3d;
  --radius: 14px;
  --max: 1140px;
  --font-display: "Space Grotesk", system-ui, sans-serif;
  --font-body: "Inter", system-ui, sans-serif;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

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

a { color: inherit; text-decoration: none; }
ul { list-style: none; }

::selection { background: var(--accent); color: #fff; }

/* ===== Nav ===== */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  background: rgba(11, 15, 20, 0.75);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, background 0.3s;
}
.nav.scrolled { border-bottom-color: var(--border); background: rgba(11, 15, 20, 0.92); }
.nav__inner { display: flex; align-items: center; justify-content: space-between; height: 78px; }

.brand { display: flex; align-items: center; gap: 12px; font-family: var(--font-display); font-weight: 700; font-size: 1.3rem; letter-spacing: 0.02em; }
.brand__logo { width: 42px; height: 42px; flex: none; filter: drop-shadow(0 0 12px rgba(255,77,61,0.35)); }
.brand--badge .brand__logo { width: auto; height: 40px; filter: none; }
.brand em { font-style: normal; color: var(--text-dim); font-weight: 500; margin-left: 6px; }

.nav__links { display: flex; align-items: center; gap: 30px; font-size: 0.95rem; font-weight: 500; }
.nav__links a:not(.btn) { color: var(--text-dim); transition: color 0.2s; }
.nav__links a:not(.btn):hover { color: var(--text); }

.nav__toggle { display: none; background: none; border: 0; cursor: pointer; padding: 8px; }
.nav__toggle span { display: block; width: 22px; height: 2px; background: var(--text); margin: 5px 0; transition: 0.3s; border-radius: 2px; }

@media (max-width: 820px) {
  .nav__toggle { display: block; }
  .nav__links {
    position: fixed;
    top: 68px;
    right: 0;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    background: var(--bg-alt);
    border-left: 1px solid var(--border);
    border-bottom: 1px solid var(--border);
    padding: 24px 28px;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    width: 260px;
  }
  .nav__links.open { transform: translateX(0); }
  .nav__links a { width: 100%; padding: 8px 0; }
}

/* ===== Buttons ===== */
.btn {
  display: inline-block;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 13px 26px;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s, color 0.2s;
}
.btn--sm { padding: 9px 18px; font-size: 0.88rem; }
.btn--primary { background: linear-gradient(135deg, var(--accent), var(--accent-2)); color: #fff; box-shadow: 0 6px 24px rgba(255, 77, 61, 0.25); }
.btn--primary:hover { transform: translateY(-2px); box-shadow: 0 10px 30px rgba(255, 77, 61, 0.35); }
.btn--ghost { border-color: var(--border); color: var(--text); background: rgba(255,255,255,0.02); }
.btn--ghost:hover { border-color: var(--text-dim); transform: translateY(-2px); }

/* ===== Hero ===== */
.hero { position: relative; padding: 160px 0 70px; overflow: hidden; }
.hero__bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(600px 320px at 85% 0%, rgba(255, 77, 61, 0.12), transparent 65%),
    radial-gradient(500px 300px at 10% 20%, rgba(255, 138, 61, 0.06), transparent 60%),
    radial-gradient(2px 2px at 20% 30%, rgba(255,255,255,0.06) 50%, transparent 50%),
    radial-gradient(2px 2px at 70% 60%, rgba(255,255,255,0.05) 50%, transparent 50%),
    radial-gradient(2px 2px at 90% 20%, rgba(255,255,255,0.05) 50%, transparent 50%),
    radial-gradient(2px 2px at 40% 80%, rgba(255,255,255,0.04) 50%, transparent 50%);
  background-size: auto, auto, 120px 120px, 140px 140px, 160px 160px, 130px 130px;
  pointer-events: none;
}
.hero__inner { position: relative; display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 60px; align-items: center; }

.eyebrow {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  border: 1px solid rgba(255, 77, 61, 0.3);
  background: rgba(255, 77, 61, 0.07);
  padding: 6px 14px;
  border-radius: 100px;
  margin-bottom: 22px;
}

h1 {
  font-family: var(--font-display);
  font-size: clamp(2.9rem, 6.5vw, 4.8rem);
  line-height: 1.12;
  letter-spacing: -0.02em;
  margin-bottom: 22px;
}
.grad {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

.hero__sub { color: var(--text-dim); font-size: 1.08rem; max-width: 540px; margin-bottom: 34px; }
.hero__cta { display: flex; gap: 16px; flex-wrap: wrap; }
.hero__ship { font-family: var(--font-mono); font-size: 13px; letter-spacing: 0.02em; color: var(--text-dim); margin-bottom: 26px; }

/* Terminal */
.hero__terminal { position: relative; }
.terminal {
  background: #0d131b;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 30px 80px rgba(0,0,0,0.5);
  overflow: hidden;
  transform: rotate(1.5deg);
}
.terminal__bar { display: flex; align-items: center; gap: 7px; padding: 12px 16px; border-bottom: 1px solid var(--border); background: #0f161f; }
.terminal__bar span { width: 11px; height: 11px; border-radius: 50%; display: inline-block; }
.terminal__bar span:nth-child(1) { background: #ff5f57; }
.terminal__bar span:nth-child(2) { background: #febc2e; }
.terminal__bar span:nth-child(3) { background: #28c840; }
.terminal__bar em { margin-left: 10px; font-style: normal; font-size: 0.78rem; color: var(--text-dim); font-family: var(--font-body); }
.terminal__body { padding: 20px 22px; font-family: ui-monospace, "Cascadia Code", Menlo, monospace; font-size: 0.86rem; line-height: 1.9; }
.terminal__body p { white-space: pre-wrap; word-break: break-word; }
.t-green { color: var(--green); }
.t-red { color: var(--red); }
.t-amber { color: var(--amber); }
.dim { color: #5c6b7c; }
.cursor { animation: blink 1.1s step-end infinite; color: var(--text); }
@keyframes blink { 50% { opacity: 0; } }

/* Hero stats */
.hero__stats {
  position: relative;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 70px;
  padding-top: 34px;
  border-top: 1px solid var(--border);
}
.stat strong { display: block; font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; color: var(--text); }
.stat span { color: var(--text-dim); font-size: 0.88rem; }

@media (max-width: 900px) {
  .hero { padding: 130px 0 50px; }
  .hero__inner { grid-template-columns: 1fr; gap: 48px; }
  .hero__stats { grid-template-columns: repeat(2, 1fr); }
}

/* ===== Sections ===== */
.section { padding: 96px 0; }
.section--alt { background: var(--bg-alt); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.section__head { max-width: 640px; margin-bottom: 54px; }
.section__head h2 { font-family: var(--font-display); font-size: clamp(1.7rem, 3.4vw, 2.5rem); letter-spacing: -0.02em; margin-bottom: 14px; }
.section__head p:not(.eyebrow) { color: var(--text-dim); }
.section__note { margin-top: 30px; color: var(--text-dim); font-size: 0.9rem; }

/* ===== About ===== */
.about__grid { max-width: 780px; display: grid; gap: 16px; }
.about__lead { font-size: 1.25rem; line-height: 1.55; color: var(--text); }
.about__lead strong { color: var(--accent); }
.about__body { font-size: 1rem; line-height: 1.6; color: var(--text-dim); }

/* ===== Grid & cards ===== */
.grid { display: grid; gap: 24px; }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
@media (max-width: 1100px) { .grid--4 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 900px) { .grid--3 { grid-template-columns: 1fr; } }
@media (max-width: 700px) { .grid--2 { grid-template-columns: 1fr; } .grid--4 { grid-template-columns: 1fr; } }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 30px 28px;
  transition: transform 0.25s, border-color 0.25s, box-shadow 0.25s;
}
.card:hover { transform: translateY(-4px); border-color: rgba(255, 77, 61, 0.4); box-shadow: 0 16px 40px rgba(0,0,0,0.35); }
.card__icon { font-size: 1.6rem; color: var(--accent); margin-bottom: 16px; }
.card h3 { font-family: var(--font-display); font-size: 1.2rem; margin-bottom: 10px; }
.card p { color: var(--text-dim); font-size: 0.94rem; margin-bottom: 14px; }
.card__list { color: var(--text); font-size: 0.9rem; display: grid; gap: 6px; }
.card__list li::before { content: "— "; color: var(--accent); }

.card--work { display: flex; flex-direction: column; }
.tag {
  align-self: flex-start;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-2);
  border: 1px solid rgba(255, 138, 61, 0.35);
  background: rgba(255, 138, 61, 0.08);
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 18px;
}

/* ===== Steps ===== */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 24px; }
.step { border-left: 2px solid var(--border); padding: 6px 0 6px 22px; transition: border-color 0.25s; }
.step:hover { border-color: var(--accent); }
.step__num { font-family: var(--font-display); font-weight: 700; font-size: 2rem; color: rgba(255, 77, 61, 0.35); display: block; margin-bottom: 10px; }
.step h3 { font-family: var(--font-display); font-size: 1.1rem; margin-bottom: 8px; }
.step p { color: var(--text-dim); font-size: 0.92rem; }
@media (max-width: 900px) { .steps { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 560px) { .steps { grid-template-columns: 1fr; } }

/* ===== Why ===== */
.why { background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 26px 26px; }
.why h3 { font-family: var(--font-display); font-size: 1.05rem; margin-bottom: 8px; }
.why p { color: var(--text-dim); font-size: 0.93rem; }

/* ===== Contact ===== */
.contact__grid { display: grid; grid-template-columns: 1fr 1fr; gap: 60px; align-items: start; }
.contact__copy h2 { font-family: var(--font-display); font-size: clamp(1.7rem, 3.4vw, 2.5rem); letter-spacing: -0.02em; margin-bottom: 14px; }
.contact__copy > p { color: var(--text-dim); margin-bottom: 28px; }
.contact__links { display: grid; gap: 14px; }
.contact__links a { color: var(--text); font-weight: 500; transition: color 0.2s; }
.contact__links a:hover { color: var(--accent); }

.form { display: grid; gap: 18px; background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); padding: 30px; }
.form label { display: grid; gap: 8px; font-size: 0.88rem; font-weight: 500; color: var(--text-dim); }
.form input, .form select, .form textarea {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 10px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 12px 14px;
  outline: none;
  transition: border-color 0.2s;
  width: 100%;
}
.form input:focus, .form select:focus, .form textarea:focus { border-color: var(--accent); }
.form textarea { resize: vertical; }
.form__note { font-size: 0.9rem; color: var(--green); min-height: 1.2em; }

/* Form success panel */
.form-success {
  display: grid;
  gap: 6px;
  justify-items: center;
  text-align: center;
  background: var(--card);
  border: 1px solid rgba(20, 167, 108, 0.45);
  border-radius: var(--radius);
  padding: 44px 30px;
}
.form-success[hidden] { display: none; }
.form-success__icon {
  width: 64px;
  height: 64px;
  margin-bottom: 14px;
  border-radius: 50%;
  background: rgba(20, 167, 108, 0.15);
  color: var(--green);
  font-size: 30px;
  font-weight: 700;
  line-height: 64px;
}
.form-success h3 { margin: 0 0 6px; font-size: 1.35rem; }
.form-success p { margin: 0; color: var(--text-dim); }
.form-success .form-success__sub { color: var(--green); font-weight: 500; }
@media (max-width: 820px) { .contact__grid { grid-template-columns: 1fr; gap: 40px; } }

/* ===== Footer ===== */
.footer { border-top: 1px solid var(--border); padding: 40px 0; }
.footer__inner { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; color: var(--text-dim); font-size: 0.88rem; }
.footer .brand { color: var(--text); font-size: 1rem; }
.footer .brand__logo { width: 34px; height: 34px; filter: none; }
.footer .brand--badge .brand__logo { width: auto; height: 32px; }
.footer__copy { font-size: 0.82rem; width: 100%; text-align: center; margin-top: 10px; color: #5c6b7c; }

/* ===== Reveal animation ===== */
.reveal { opacity: 0; transform: translateY(24px); transition: opacity 0.7s ease, transform 0.7s ease; }
.reveal.visible { opacity: 1; transform: none; }
.reveal--delay { transition-delay: 0.1s; }
.reveal--delay-2 { transition-delay: 0.2s; }
.reveal--delay-3 { transition-delay: 0.3s; }
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  html { scroll-behavior: auto; }
}

/* ===== Sub-page styles (Batch B, SEO service pages) ===== */
.nav__links a.is-active { color: var(--text); }
.page-hero { padding: 168px 0 26px; }
.page-hero h1 { font-size: clamp(2.3rem, 4.8vw, 3.6rem); max-width: 920px; margin-bottom: 20px; }
.page-hero .lead { color: var(--text-dim); font-size: 1.12rem; max-width: 700px; margin-bottom: 30px; }
.page-cta { display: flex; gap: 16px; flex-wrap: wrap; }
.cta-band { text-align: center; background: var(--bg-alt); border-top: 1px solid var(--border); }
.cta-band h2 { font-family: var(--font-display); font-size: clamp(1.7rem, 3.4vw, 2.5rem); letter-spacing: -0.02em; margin-bottom: 12px; }
.cta-band p { color: var(--text-dim); margin-bottom: 26px; }
.cta-band .page-cta { justify-content: center; }
.footer__nav { display: flex; flex-wrap: wrap; gap: 4px 22px; width: 100%; font-size: 0.9rem; margin-top: 6px; }
.footer__nav a { color: var(--text-dim); transition: color 0.2s; }
.footer__nav a:hover { color: var(--text); }
.card__cta { display: inline-block; margin-top: 14px; color: var(--accent); font-weight: 600; font-size: 0.92rem; }
.card__cta:hover { color: var(--accent-2); }

/* ===== Service imagery (approved Aug/Sep 2026) ===== */
.card__media { margin: -30px -28px 20px; border-radius: var(--radius) var(--radius) 0 0; overflow: hidden; }
.card__media img { display: block; width: 100%; height: auto; }
.page-hero__grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.page-hero__media { margin: 0; border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; box-shadow: 0 24px 60px rgba(0, 0, 0, 0.45); }
.page-hero__media img { display: block; width: 100%; height: auto; }
@media (max-width: 900px) {
  .page-hero__grid { grid-template-columns: 1fr; gap: 34px; }
}