/* =====================
   🌈 THEMES
===================== */

:root {
  --bg: #f2f4f8;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --shadow: 0 6px 15px rgba(0,0,0,0.12);
}

body.dark {
  --bg: #0f172a;
  --card: #1e293b;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --shadow: 0 10px 25px rgba(0,0,0,0.4);
}

/* =====================
   🎨 DESIGN SYSTEM
===================== */
:root {
  --bg: #f2f4f8;
  --card: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;

  --primary: #3498db;
  --primary-dark: #2980b9;

  --success: #2ecc71;
  --warning: #e67e22;
  --purple: #9b59b6;

  --shadow: 0 6px 15px rgba(0,0,0,0.12);
  --radius: 12px;
}

/* =====================
   🌍 BASE
===================== */
body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: var(--bg);
  color: var(--text);
  margin: 0;
  padding: 30px;
}

h1, h2 {
  text-align: center;
  color: #2c3e50;
}

/* =====================
   🧱 CARD
===================== */
.card {
  max-width: 650px;
  margin: 20px auto;
  background: var(--card);
  padding: 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  transition: 0.3s;
}

.card:hover {
  transform: translateY(-3px);
}

/* =====================
   🖼 IMAGES
===================== */
.card img {
  width: 100%;
  border-radius: var(--radius);
  margin-bottom: 10px;
}

/* =====================
   🔘 BUTTONS SYSTEM
===================== */
button, .btn {
  padding: 12px 16px;
  border-radius: 10px;
  border: none;
  cursor: pointer;
  font-size: 16px;
  transition: 0.3s;
  text-decoration: none;
  display: inline-block;
  text-align: center;
}

/* Primary */
.btn-primary {
  background: var(--primary);
  color: white;
}
.btn-primary:hover {
  background: var(--primary-dark);
  transform: scale(1.05);
}

/* Success */
.btn-success {
  background: var(--success);
  color: white;
}

/* Warning */
.btn-warning {
  background: var(--warning);
  color: white;
}

/* Purple */
.btn-purple {
  background: var(--purple);
  color: white;
}

/* =====================
   🧭 NAVIGATION
===================== */
.nav {
  margin-top: 40px;
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

.nav a {
  padding: 14px 20px;
  border-radius: var(--radius);
  color: white;
  font-weight: bold;
  text-decoration: none;
  box-shadow: var(--shadow);
  transition: 0.3s;
}

.nav a:hover {
  transform: translateY(-5px) scale(1.05);
}

/* Кольори навігації */
.nav a:nth-child(1) { background: var(--primary); }
.nav a:nth-child(2) { background: var(--warning); }
.nav a:nth-child(3) { background: var(--purple); }

/* =====================
   🏠 HERO
===================== */
.hero {
  text-align: center;
  padding: 50px 20px;
  border-radius: var(--radius);
  background: linear-gradient(135deg, var(--primary), var(--success));
  color: white;
  margin-bottom: 25px;
}

/* =====================
   📦 FEATURES
===================== */
.features {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
  justify-content: center;
}

.feature {
  background: white;
  padding: 15px;
  border-radius: var(--radius);
  width: 250px;
  box-shadow: var(--shadow);
}

/* =====================
   🔙 BACK BUTTON
===================== */
.back {
  display: inline-block;
  margin-bottom: 15px;
  color: var(--primary);
  font-weight: bold;
  text-decoration: none;
  transition: 0.2s;
}

.back:hover {
  transform: translateX(-4px);
  color: var(--primary-dark);
}

/* =====================
   💬 RESULT
===================== */
.result-card {
  margin-top: 25px;
  background: white;
  padding: 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
}

/* =====================
   📱 FOOTER
===================== */
.footer {
  margin-top: 50px;
  padding: 30px 20px;
  background: #1f2937;
  color: #ddd;
  text-align: center;
  border-radius: var(--radius);
}

.footer a {
  color: white;
  text-decoration: none;
}

/* =========================
   🧭 UNIFIED PAGES HEADER
========================= */
.page-header {
  max-width: 900px;
  margin: 0 auto 20px auto;
  text-align: center;
}

/* =========================
   🔙 BACK BUTTON (NEW STYLE)
========================= */
.back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 14px;
  margin-bottom: 20px;
  text-decoration: none;
  color: #ffffff;
  background: linear-gradient(135deg, #3498db, #2980b9);
  border-radius: 10px;
  font-weight: bold;
  box-shadow: 0 6px 15px rgba(0,0,0,0.15);
  transition: 0.25s;
}

.back:hover {
  transform: translateX(-5px);
  background: linear-gradient(135deg, #2980b9, #1f6fa5);
}

/* =========================
   📦 THREAT CARDS (IMPROVED)
========================= */
.card {
  max-width: 750px;
  margin: 18px auto;
  background: #ffffff;
  padding: 22px;
  border-radius: 14px;
  box-shadow: 0 6px 18px rgba(0,0,0,0.12);
  transition: 0.25s;
  border-left: 6px solid #3498db;
}

.card:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 25px rgba(0,0,0,0.18);
}

/* різні типи загроз */
.card.drone { border-left-color: #2ecc71; }
.card.cruise { border-left-color: #e67e22; }
.card.ballistic { border-left-color: #9b59b6; }

/* =========================
   🧠 TEXT IMPROVEMENTS
========================= */
.card h2 {
  margin-top: 0;
  color: #2c3e50;
}

.card p {
  line-height: 1.6;
  color: #444;
}

/* =========================
   📱 RESPONSIVE
========================= */
@media (max-width: 600px) {
  body {
    padding: 15px;
  }

  .card {
    padding: 16px;
  }
}

body {
  background: var(--bg);
  color: var(--text);
}

.card {
  background: var(--card);
  box-shadow: var(--shadow);
}

.card p {
  color: var(--muted);
}

body.dark {
  background: #0f172a;
  color: #e5e7eb;
}

body.dark .card,
body.dark .feature,
body.dark .result-card {
  background: #1f2937;
  color: #e5e7eb;
}

body.dark .hero {
  background: linear-gradient(135deg, #0b1220, #111827);
}

body.dark .menu-btn {
  filter: brightness(1.1);
}

.select-container {
  display: flex;
  flex-direction: column;
  gap: 12px;

  max-width: 420px;
  margin: 20px auto;

  background: var(--card);
  padding: 20px;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.select-container label {
  font-weight: 600;
  font-size: 14px;
}

.select-container select,
.select-container input {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid #ccc;
  font-size: 14px;
}

.select-container button {
  padding: 12px;
  border-radius: 10px;
  border: none;
  background: var(--primary);
  color: white(245, 16, 16);
  font-weight: bold;
  cursor: pointer;
}

/* =====================
   💛 DONATE BUTTON
===================== */
.btn-donate {
  background: linear-gradient(135deg, #f1c40f, #f39c12);
  color: #000;
  font-weight: bold;
  display: block;
  margin: 10px auto;
  max-width: 280px;
  text-align: center;
}

.btn-donate:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

/* =====================
   💬 TELEGRAM BUTTON
===================== */
.btn-tg {
  background: linear-gradient(135deg, #2AABEE, #229ED9);
  color: white;
  font-weight: bold;
  display: block;
  margin: 10px auto;
  max-width: 280px;
  text-align: center;
}

.btn-tg:hover {
  transform: scale(1.05);
  box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

.menu-btn {
  padding: 14px 20px;
  border-radius: 14px;
  font-weight: bold;
  text-decoration: none;
  color: white;

  background: linear-gradient(135deg, #6c5ce7, #0ec3d3); /* фіолетовий */
  box-shadow: 0 6px 15px rgba(0,0,0,0.15);

  transition: 0.3s;
}

.menu-btn:hover {
  transform: translateY(-4px) scale(1.05);
  background: linear-gradient(135deg, #6153d0, #0eb5c4);
}