/* ============================================================
   DaaS-IoT design system — tokens, brand idioms & site utilities
   Distilled from the daas-iot.com brand (Sebyone Srl).
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:ital,wght@0,300;0,400;0,500;0,600;0,700;0,800;1,400&display=swap');

:root {
  /* ---- Brand palette ---- */
  --daas-night-blue: #0d1b4b;        /* primary dark surface (navbar, footer, hero) */
  --daas-night-blue-deep: #070f2c;   /* deeper gradient stop for tech cards */
  --daas-night-blue-border: #1a2a6c; /* subtle border on dark surfaces */
  --daas-accent-red: #cc1130;        /* brand accent / primary CTA */
  --daas-accent-red-hover: #e84060;  /* hover / lighter red for text on dark */
  --daas-accent-red-bright: #ff5c7a; /* brightest red hover */
  --daas-accent-blue: #1a56db;       /* secondary accent */
  --daas-accent-green: #35d07f;      /* success / live indicator */

  /* ---- Base ---- */
  --daas-bg: #ffffff;
  --daas-fg: #212529;
  --daas-fg-on-dark: rgba(255, 255, 255, 0.88);
  --daas-fg-on-dark-muted: rgba(255, 255, 255, 0.56);
  --daas-fg-on-dark-subtle: rgba(255, 255, 255, 0.42);
  --daas-border-on-dark: rgba(255, 255, 255, 0.06);

  /* ---- Typography ---- */
  --daas-font-sans: 'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --daas-font-weight-normal: 400;
  --daas-font-weight-medium: 500;
  --daas-font-weight-semibold: 600;
  --daas-font-weight-bold: 700;
  --daas-font-weight-black: 800;

  /* ---- Radii & elevation ---- */
  --daas-radius-sm: 6px;
  --daas-radius-md: 12px;
  --daas-radius-pill: 999px;
  --daas-shadow-card: 0 2px 16px rgba(0, 0, 0, 0.3);
  --daas-shadow-card-hover: 0 0 28px rgba(204, 17, 48, 0.16), 0 12px 40px rgba(0, 0, 0, 0.45);
  --daas-glow-red: 0 0 28px rgba(204, 17, 48, 0.45);
}

/* ---- Base reset ---- */
* { box-sizing: border-box; }
body { margin: 0; font-family: var(--daas-font-sans); -webkit-font-smoothing: antialiased; }
a { color: var(--daas-accent-red); text-decoration: none; }
a:hover { color: var(--daas-accent-red-hover); }
::selection { background: rgba(204, 17, 48, 0.22); }
code, pre { font-family: ui-monospace, 'SF Mono', Menlo, monospace; }
img { display: block; }

/* ============================================================
   Brand idioms
   ============================================================ */

.daas-card-tech {
  background: linear-gradient(150deg, rgba(13, 27, 75, 0.88), rgba(7, 15, 44, 0.94));
  border: 1px solid rgba(26, 86, 219, 0.14);
  border-radius: var(--daas-radius-md);
  color: var(--daas-fg-on-dark);
  padding: 1.5rem;
  box-shadow: var(--daas-shadow-card);
  transition: transform 0.28s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.28s ease, border-color 0.28s ease;
}
.daas-card-tech:hover {
  border-color: rgba(204, 17, 48, 0.5);
  box-shadow: var(--daas-shadow-card-hover);
  transform: translateY(-5px);
}

.daas-badge-tech {
  display: inline-block;
  background-color: rgba(204, 17, 48, 0.12);
  color: var(--daas-accent-red-hover);
  border: 1px solid rgba(204, 17, 48, 0.35);
  border-radius: var(--daas-radius-pill);
  font-weight: var(--daas-font-weight-semibold);
  letter-spacing: 0.06em;
  font-size: 0.72rem;
  text-transform: uppercase;
  padding: 0.25rem 0.7rem;
}
.daas-badge-live::before {
  content: '';
  display: inline-block;
  width: 6px; height: 6px;
  border-radius: 50%;
  background: var(--daas-accent-green);
  margin-right: 7px;
  vertical-align: middle;
  animation: daas-pulse-dot 1.8s ease-in-out infinite;
}
@keyframes daas-pulse-dot {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.72); }
}

.daas-section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.7rem;
  font-weight: var(--daas-font-weight-bold);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--daas-accent-red);
}
.daas-section-eyebrow::before {
  content: '';
  display: block;
  width: 22px; height: 2px;
  background: currentColor;
  border-radius: 2px;
  flex-shrink: 0;
}

.daas-gradient-heading {
  background: linear-gradient(125deg, #ffffff 10%, rgba(255, 255, 255, 0.68) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  font-weight: var(--daas-font-weight-black);
  letter-spacing: -0.025em;
}

.daas-glow-red {
  border: 1px solid rgba(204, 17, 48, 0.28);
  border-radius: var(--daas-radius-md);
  box-shadow: 0 0 52px rgba(204, 17, 48, 0.09), 0 24px 60px rgba(0, 0, 0, 0.5);
}

.daas-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--daas-font-sans);
  font-weight: var(--daas-font-weight-bold);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  border: none;
  border-radius: var(--daas-radius-pill);
  padding: 0.6rem 1.5rem;
  cursor: pointer;
  background: var(--daas-accent-red);
  color: #fff;
  transition: box-shadow 0.25s ease, transform 0.2s ease, background 0.2s ease;
}
.daas-btn:hover:not(:disabled) { box-shadow: var(--daas-glow-red); transform: translateY(-1px); }
.daas-btn:disabled { opacity: 0.5; cursor: not-allowed; }

.daas-btn-outline {
  background: rgba(204, 17, 48, 0.08);
  color: var(--daas-accent-red-hover);
  border: 1px solid rgba(204, 17, 48, 0.4);
}
.daas-btn-outline:hover:not(:disabled) { background: rgba(204, 17, 48, 0.16); border-color: rgba(204, 17, 48, 0.6); }

/* ============================================================
   Site utilities
   ============================================================ */

.nav-a { color: rgba(255,255,255,.62); font-size: .9rem; font-weight: 500; text-decoration: none; padding: 6px 2px; border-bottom: 2px solid transparent; transition: color .2s, border-color .2s; white-space: nowrap; }
.nav-a:hover { color: #fff; }
.nav-a.active { color: #fff; border-bottom-color: var(--daas-accent-red); }
.hovlift { transition: transform .28s cubic-bezier(.4,0,.2,1), box-shadow .28s ease, border-color .28s ease; }

/* ---- Section sub-nav (inside a microproject) ---- */
.sub-nav { border-bottom: 1px solid var(--daas-night-blue-border); background: rgba(9,15,36,.55); }
.sub-nav-inner { max-width: 1200px; margin: 0 auto; padding: 0 28px; display: flex; gap: 6px; overflow-x: auto; }
.sub-nav-a { position: relative; padding: 14px 14px 12px; font-size: .86rem; font-weight: 600; color: var(--daas-fg-on-dark-muted); text-decoration: none; white-space: nowrap; border-bottom: 2px solid transparent; transition: color .2s, border-color .2s; }
.sub-nav-a:hover { color: #fff; }
.sub-nav-a.active { color: #fff; border-bottom-color: var(--daas-accent-red); }

.lang-sel { background: rgba(255,255,255,.05); border: 1px solid var(--daas-night-blue-border); color: var(--daas-fg-on-dark); border-radius: var(--daas-radius-pill); padding: .42rem .8rem; font-size: .82rem; font-family: inherit; cursor: pointer; outline: none; }
.lang-sel option { background: #0d1b4b; color: #fff; }

input[type=text], select { outline: none; }

@keyframes daas-float { 0%,100% { transform: translateY(0); } 50% { transform: translateY(-8px); } }
@keyframes daas-scan { 0% { transform: translateX(-100%); } 100% { transform: translateX(100%); } }
@keyframes daas-pkt { 0% { left: 0; opacity: 0; } 10% { opacity: 1; } 90% { opacity: 1; } 100% { left: 100%; opacity: 0; } }
@keyframes daas-blink { 0%,100% { opacity: 1; } 50% { opacity: .35; } }
@keyframes daas-slidein { from { transform: translateY(16px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }