:root {
  --bg-main: #0D1B2A;
  --bg-deep: #0A2342;
  --sage: #1F8F5B;
  --sage-light: #2BAA6A;
  --text-main: #F2F6F4;
  --text-soft: #E7F3EE;
  --muted: rgba(231, 243, 238, 0.72);
  --border: rgba(31, 143, 91, 0.28);
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
}

body {
  font-family: "Montserrat", Arial, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(31, 143, 91, 0.14), transparent 28%),
    linear-gradient(135deg, var(--bg-main), var(--bg-deep));
  color: var(--text-soft);
}

.ai-page {
  min-height: 100vh;
  padding: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.ai-card {
  width: min(1000px, 100%);
  height: min(760px, calc(100vh - 44px));
  background: rgba(242, 246, 244, 0.055);
  border: 1px solid var(--border);
  border-radius: 24px;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 25px 80px rgba(0,0,0,0.35);
}

.ai-header {
  padding: 28px 32px;
  background: rgba(31, 143, 91, 0.08);
  border-bottom: 1px solid var(--border);
}

.ai-header-brand {
  display: flex;
  align-items: center;
  gap: 18px;
}

.ai-header-logo {
  height: 48px;
  width: auto;
  object-fit: contain;
  filter: drop-shadow(0 6px 18px rgba(31,143,91,.16));
}

.ai-header-text {
  display: flex;
  flex-direction: column;
}

.ai-header h1 {
  margin: 0 0 8px;
  color: var(--text-main);
  font-size: clamp(26px, 4vw, 38px);
  font-weight: 800;
}

.ai-header p {
  margin: 0;
  color: var(--sage);
  font-size: 17px;
  font-weight: 600;
}

.ai-messages {
  flex: 1;
  overflow-y: auto;
  padding: 26px 30px;
}

.ai-message {
  max-width: 78%;
  margin-bottom: 18px;
  padding: 16px 18px;
  border-radius: 18px;
  line-height: 1.55;
  font-size: 16px;
}

.ai-message.bot {
  background: rgba(242, 246, 244, 0.09);
  border: 1px solid rgba(31, 143, 91, 0.24);
  color: var(--text-soft);
}

.ai-message.user {
  margin-left: auto;
  background: var(--sage);
  color: #fff;
  font-weight: 600;
}

.ai-form {
  display: flex;
  gap: 12px;
  padding: 18px 22px;
  border-top: 1px solid var(--border);
  background: rgba(13, 27, 42, 0.94);
}

#ai-question {
  flex: 1;
  border: 1px solid rgba(31, 143, 91, 0.42);
  background: rgba(242, 246, 244, 0.96);
  color: #0D1B2A;
  border-radius: 14px;
  padding: 15px 16px;
  font-size: 16px;
  outline: none;
}

#ai-question:focus {
  border-color: var(--sage);
  box-shadow: 0 0 0 3px rgba(31, 143, 91, 0.20);
}

button {
  background: #1F8F5B;
  color: #fff;
  border: none;
  padding: 0 28px;
  border-radius: 14px;
  font-weight: 700;
  cursor: pointer;
  transition: .25s ease;
  box-shadow: 0 12px 28px rgba(31,143,91,.28);
}

button:hover {
  background: #2BAA6A;
}

@media (max-width: 700px) {
  .ai-page {
    padding: 0;
  }

  .ai-card {
    height: 100vh;
    border-radius: 0;
    border: 0;
  }

  .ai-header {
    padding: 22px;
  }

  .ai-header-brand {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  .ai-header-logo {
    height: 52px;
  }

  .ai-messages {
    padding: 18px;
  }

  .ai-message {
    max-width: 92%;
    font-size: 15px;
  }

  .ai-form {
    padding: 14px;
  }

  button {
    padding: 0 18px;
  }
}