/* =========================
   GLOBAL RESET & SAFETY
========================= */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Inter, Arial, sans-serif;
  background: radial-gradient(ellipse at top, #0f2027, #000000);
  color: #ffffff;
}

/* === ABSOLUTE IMAGE SAFETY (FIX TRÀN 100%) === */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* =========================
   LINKS
========================= */
a {
  color: #4fd1ff;
  text-decoration: none;
}
a:hover {
  opacity: 0.85;
}

/* =========================
   HEADER / LOGO
========================= */
header {
  width: 100%;
  padding: 16px 24px;
}

.logo {
  display: flex;
  align-items: center;
}

.logo img {
  width: 48px;
  max-width: 48px;
  height: auto;
}

/* =========================
   HERO
========================= */
.hero {
  max-width: 1100px;
  margin: 0 auto;
  padding: 80px 24px 60px;
}

.hero h1 {
  font-size: 42px;
  line-height: 1.2;
  margin-bottom: 16px;
}

.hero p {
  font-size: 18px;
  line-height: 1.6;
  color: #cfd8dc;
  max-width: 640px;
}

/* =========================
   CTA BUTTONS
========================= */
.cta-group {
  margin-top: 32px;
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.cta {
  padding: 14px 22px;
  border-radius: 14px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid #4fd1ff;
  background: transparent;
  color: #4fd1ff;
  transition: all 0.2s ease;
}

.cta.primary {
  background: linear-gradient(135deg, #4fd1ff, #38bdf8);
  color: #000;
  border: none;
}

.cta:hover {
  transform: translateY(-1px);
  opacity: 0.95;
}

/* =========================
   SECTIONS
========================= */
.section {
  max-width: 900px;
  margin: 0 auto;
  padding: 60px 24px;
}

.section h2 {
  font-size: 30px;
  margin-bottom: 12px;
}

.section p {
  color: #b0bec5;
  margin-bottom: 24px;
}

/* =========================
   FORMS (INDEX + WORKER)
========================= */
form {
  display: grid;
  gap: 14px;
}

input, textarea, select {
  width: 100%;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid #2c3e50;
  background: #0b1218;
  color: #ffffff;
  font-size: 15px;
}

input::placeholder,
textarea::placeholder {
  color: #78909c;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: #4fd1ff;
}

/* submit */
button[type="submit"] {
  margin-top: 8px;
  padding: 14px;
  border-radius: 14px;
  border: none;
  background: linear-gradient(135deg, #4fd1ff, #38bdf8);
  color: #000;
  font-size: 16px;
  font-weight: 700;
  cursor: pointer;
}

button[type="submit"]:hover {
  opacity: 0.9;
}

/* =========================
   FOOTER
========================= */
footer {
  padding: 40px 24px;
  text-align: center;
  color: #78909c;
  font-size: 14px;
}

/* =========================
   MOBILE FIX (WORKER FIRST)
========================= */
@media (max-width: 768px) {

  header {
    padding: 12px 16px;
  }

  .logo img {
    width: 40px;
    max-width: 40px;
  }

  .hero {
    padding: 48px 16px 40px;
  }

  .hero h1 {
    font-size: 30px;
  }

  .hero p {
    font-size: 16px;
  }

  .cta-group {
    flex-direction: column;
  }

  .cta {
    width: 100%;
    text-align: center;
    font-size: 16px;
    padding: 16px;
  }

  .section {
    padding: 40px 16px;
  }

  .section h2 {
    font-size: 24px;
  }

  input, textarea, select {
    font-size: 16px;
  }
}