/* ========================================
   DairyPlan help bot MVP — Styles
   GEA brand palette
   ======================================== */

:root {
  --gea-blue: #0303B8;
  --gea-blue-hover: #0202a0;
  --white: #FFFFFF;
  --black: #000000;
  --light-grey: #E6E6E6;
  --mid-grey: #B1B3B4;
  --dark-grey: #4A4A4A;

  --radius: 6px;
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.08);
  --font-stack: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-stack);
  color: var(--black);
  background-color: var(--light-grey);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  line-height: 1.5;
}

[hidden] {
  display: none !important;
}

/* ----- Buttons ----- */
.btn {
  display: inline-block;
  font: inherit;
  font-weight: 600;
  padding: 0.7rem 1.2rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease,
    color 0.15s ease, opacity 0.15s ease;
  text-align: center;
}

.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

.btn-primary {
  background-color: var(--gea-blue);
  color: var(--white);
  border-color: var(--gea-blue);
}

.btn-primary:hover:not(:disabled),
.btn-primary:focus-visible {
  background-color: var(--gea-blue-hover);
  border-color: var(--gea-blue-hover);
}

.btn-outline {
  background-color: transparent;
  color: var(--gea-blue);
  border-color: var(--gea-blue);
  padding: 0.45rem 0.9rem;
  font-size: 0.9rem;
}

.btn-outline:hover:not(:disabled),
.btn-outline:focus-visible {
  background-color: var(--gea-blue);
  color: var(--white);
}

/* ========================================
   Login screen
   ======================================== */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  background-color: var(--light-grey);
}

.login-card {
  width: 100%;
  max-width: 400px;
  background-color: var(--white);
  padding: 2.25rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  border-top: 4px solid var(--gea-blue);
}

.login-title {
  margin: 0 0 0.25rem;
  font-size: 1.5rem;
  color: var(--black);
}

.login-subtitle {
  margin: 0 0 1.75rem;
  font-size: 0.95rem;
  color: var(--dark-grey);
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.field-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--dark-grey);
}

.field input {
  font: inherit;
  padding: 0.65rem 0.8rem;
  border: 1px solid var(--mid-grey);
  border-radius: var(--radius);
  background-color: var(--white);
  color: var(--black);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  width: 100%;
}

.field input:focus {
  outline: none;
  border-color: var(--gea-blue);
  box-shadow: 0 0 0 3px rgba(3, 3, 184, 0.15);
}

.login-error {
  margin: 0;
  min-height: 1.25rem;
  font-size: 0.85rem;
  color: #b00020;
}

.login-error:empty {
  min-height: 0;
}

.login-form .btn-primary {
  margin-top: 0.25rem;
}

/* ========================================
   Chat screen
   ======================================== */
.chat-screen {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--white);
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1.25rem;
  background-color: var(--white);
  border-bottom: 1px solid var(--light-grey);
  box-shadow: var(--shadow-sm);
  flex-wrap: wrap;
}

.app-title {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--gea-blue);
}

.chat-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  background-color: var(--light-grey);
  overflow: hidden;
}

#bp-embedded-webchat {
  flex: 1;
  width: 100%;
  height: 100%;
  min-height: 0;
}

.chat-hint {
  max-width: 480px;
  text-align: center;
  background-color: var(--white);
  padding: 2rem 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  border-left: 4px solid var(--gea-blue);
}

.chat-hint-title {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--gea-blue);
}

.chat-hint-body {
  margin: 0;
  color: var(--dark-grey);
  font-size: 0.95rem;
}

/* ========================================
   Responsive
   ======================================== */
@media (max-width: 480px) {
  .login-card {
    padding: 1.75rem 1.25rem;
  }

  .login-title {
    font-size: 1.3rem;
  }

  .app-header {
    padding: 0.65rem 1rem;
  }

  .app-title {
    font-size: 0.95rem;
    flex: 1 1 100%;
    order: 1;
  }

  #logout-btn {
    order: 2;
    margin-left: auto;
  }
}