:root {
  --main-color: #184ca4;
  --bg-light: #f4f6fa;
  --text-dark: #1a1a1a;
  --radius: 14px;
  --shadow: 0 4px 18px rgba(0,0,0,0.08);
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

body {
  margin: 0;
  font-family: "Segoe UI", Roboto, sans-serif;
  background: var(--bg-light);
  color: var(--text-dark);
  line-height: 1.6;
}

/* ---------------- HEADER ---------------- */

header {
  background: var(--main-color);
  color: white;
  padding: 2.5rem 1rem;
  text-align: center;
}

header h1 {
  margin: 0;
  font-size: clamp(1.8rem, 5vw, 3rem);
  font-weight: 700;
}

header p {
  margin-top: .5rem;
  font-size: clamp(1rem, 2.5vw, 1.3rem);
  opacity: .9;
}

/* ---------------- FORM ---------------- */

form {
  width: min(94%, 650px);
  margin: 2rem auto;
  background: white;
  padding: 1.8rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

label {
  font-weight: 600;
  margin-top: 1rem;
  display: block;
}

input, textarea, button {
  width: 100%;
  padding: 1rem;
  margin-top: .4rem;
  border: 1px solid #ccc;
  border-radius: 10px;
  font-size: 1rem;
}

textarea {
  resize: vertical;
}

button {
  background: var(--main-color);
  color: white;
  border: none;
  margin-top: 1.5rem;
  cursor: pointer;
  font-weight: 600;
  transition: .25s;
}

button:hover {
  background: #10397c;
}

/* ---------------- LINKS ---------------- */

.center-links {
  text-align: center;
  margin-top: 2rem;
}

.center-links a {
  color: var(--main-color);
  font-weight: bold;
  margin: 0 .5rem;
  text-decoration: none;
}

.center-links a:hover {
  text-decoration: underline;
}

/* ---------------- GALLERY ---------------- */

.gallery {
  width: min(94%, 1400px);
  margin: 2rem auto;
  display: grid;
  gap: 1.5rem;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.card {
  background: white;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1rem;
  text-align: center;
}

.card img {
  width: 100%;
  border-radius: 10px;
  object-fit: cover;
}

/* ---------------- PIN LOGIN ---------------- */

.pin-container {
  width: min(90%, 400px);
  margin: 5rem auto;
  background: white;
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
}

/* ---------------- FOOTER ---------------- */

footer {
  background: var(--main-color);
  color: white;
  text-align: center;
  padding: 1.5rem;
  margin-top: 3rem;
  font-size: clamp(.9rem, 1.5vw, 1.1rem);
}

/* ---------- TERMS PAGE ---------- */

.terms-box {
  width: min(94%, 900px);
  margin: 2rem auto;
  background: white;
  padding: 2rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.terms-box h2 {
  color: var(--main-color);
  margin-top: 0;
  font-size: clamp(1.4rem, 3vw, 2rem);
}

.terms-box h3 {
  margin-top: 2rem;
  color: var(--main-color);
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
}

.terms-box ul {
  padding-left: 1.2rem;
  line-height: 1.8;
  margin-top: .5rem;
}

.terms-box p {
  margin-top: .5rem;
  font-size: 1rem;
}

.back-link {
  color: var(--main-color);
  font-weight: bold;
  text-decoration: none;
  padding: .8rem 1.2rem;
  border-radius: 8px;
  background: #e8eefc;
  transition: .25s;
}

.back-link:hover {
  background: #d6e2fa;
}

/* ---------- MOBILE OPTIMIZATION ---------- */

@media (max-width: 600px) {
  .terms-box {
    padding: 1.5rem;
  }

  .terms-box ul {
    padding-left: 1rem;
  }
}

/* ---------------- TABLET BOOST ---------------- */

@media (min-width: 600px) {
  form {
    padding: 2.5rem;
  }

  .card {
    padding: 1.3rem;
  }
}

/* ---------------- DESKTOP BOOST ---------------- */

@media (min-width: 1100px) {
  header {
    padding: 3.5rem 1rem;
  }

  form {
    padding: 3rem;
  }

  .gallery {
    gap: 2rem;
  }
}