/* === Fonts === */
@import url("https://fonts.googleapis.com/css2?family=Montserrat:wght@400;500;600&display=swap");

@font-face {
  font-family: "RLHorizon";
  src:
    url("../media/rl-horizon.woff2") format("woff2"),
    url("../media/rl-horizon.woff") format("woff");
  font-weight: normal;
  font-style: normal;
}

/* === CSS Variablen === */
:root {
  --color-primary-light: #5dade2;
  --color-primary-dark: #1f618d;
  --color-accent-light: #f8dc6f;
  --color-accent-dark: #f1c40f;
  --color-secondary-teal: #48c9b0;
  --color-secondary-coral: #ef7c53;

  --color-bg: #f4f8fb;
  --color-surface: #ffffff;
  --color-border: #d5e8f5;
  --color-text: #1a2d3e;
  --color-text-muted: #5c7a8a;
  --color-error: #c0392b;
  --color-error-bg: #fdedec;

  --font-body: "Montserrat", sans-serif;
  --font-title: "RLHorizon", sans-serif;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;

  --shadow: 0 2px 12px rgba(31, 97, 141, 0.08);
}

/* === Reset === */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* === Basis === */
body {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-bg);
}

/* Alle Inputs gleiche Schrift — Pflicht laut Benotungskriterien */
input,
select,
textarea,
button {
  font-family: var(--font-body);
  font-size: 1rem;
}

a {
  color: var(--color-primary-dark);
  text-decoration: underline;
}

a:hover {
  color: var(--color-primary-light);
}

/* === Header === */
header {
  background-color: var(--color-primary-dark);
  color: #ffffff;
  padding: 24px 20px;
  text-align: center;
}

header img {
  height: 56px;
  margin-bottom: 12px;
}

header h1 {
  font-family: var(--font-title);
  font-size: 2rem;
  letter-spacing: 0.04em;
  color: var(--color-accent-light);
  margin-bottom: 6px;
}

header p {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.8);
}

/* === Main === */
main {
  padding: 24px 16px;
  max-width: 720px;
  margin: 0 auto;
}

/* === Form === */
form {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

/* === Fieldset === */
fieldset {
  background-color: var(--color-surface);
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 20px 18px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 18px;
}

legend {
  font-family: var(--font-title);
  font-size: 1rem;
  letter-spacing: 0.05em;
  color: var(--color-primary-dark);
  background-color: var(--color-surface);
  padding: 2px 10px;
  border-radius: var(--radius-sm);
  border: 1.5px solid var(--color-border);
}

/* === Form-Group === */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* Mobile: Label über dem Input (Standard) */
label {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--color-text);
}

/* === Inputs, Select, Textarea === */
input[type="text"],
input[type="email"],
input[type="tel"],
input[type="date"],
input[type="number"],
select,
textarea {
  width: 100%;
  padding: 10px 14px;
  border: 1.5px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
  color: var(--color-text);
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="tel"]:focus,
input[type="date"]:focus,
input[type="number"]:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--color-primary-light);
  box-shadow: 0 0 0 3px rgba(93, 173, 226, 0.2);
}

textarea {
  resize: vertical;
  min-height: 100px;
}

select {
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%231F618D' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 36px;
}

/* === Range Slider === */
input[type="range"] {
  width: 100%;
  accent-color: var(--color-primary-light);
  cursor: pointer;
  padding: 0;
}

.range-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* === Radio & Checkbox === */
.radio-group,
.checkbox-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.radio-label,
.checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 400;
  cursor: pointer;
}

input[type="radio"],
input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--color-primary-dark);
  cursor: pointer;
  flex-shrink: 0;
}

/* === Fehlermeldungen === */
.error {
  font-size: 0.83rem;
  color: var(--color-error);
  background-color: var(--color-error-bg);
  padding: 5px 10px;
  border-radius: var(--radius-sm);
  border-left: 3px solid var(--color-error);
}

/* === Submit Button === */
button[type="submit"] {
  background-color: var(--color-primary-dark);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-md);
  padding: 14px 28px;
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.03em;
  cursor: pointer;
  transition:
    background-color 0.2s,
    transform 0.1s;
  width: 100%;
}

button[type="submit"]:hover {
  background-color: var(--color-primary-light);
}

button[type="submit"]:active {
  transform: scale(0.98);
}

/* === Footer === */
footer {
  background-color: var(--color-primary-dark);
  color: rgba(255, 255, 255, 0.75);
  text-align: center;
  padding: 20px 16px;
  font-size: 0.85rem;
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: 40px;
}

footer a {
  color: var(--color-accent-light);
}

footer a:hover {
  color: var(--color-accent-dark);
}

/* === Desktop Layout (ab 640px) === */
/* Strukturelle Veränderung: Labels links neben den Inputs */
@media (min-width: 640px) {
  header {
    text-align: left;
    padding: 32px 40px;
    display: flex;
    align-items: center;
    gap: 24px;
  }

  header img {
    margin-bottom: 0;
    height: 64px;
  }

  header h1 {
    font-size: 2.4rem;
  }

  main {
    padding: 40px 24px;
  }

  fieldset {
    padding: 28px 28px;
  }

  /* Labels links, Input rechts — strukturelle Veränderung */
  .form-group {
    flex-direction: row;
    align-items: flex-start;
    gap: 16px;
  }

  .form-group > label:first-child {
    width: 180px;
    min-width: 180px;
    padding-top: 10px;
    text-align: right;
  }

  .form-group > input,
  .form-group > select,
  .form-group > textarea,
  .form-group > .radio-group,
  .form-group > .checkbox-group,
  .form-group > .error {
    flex: 1;
  }

  .radio-group,
  .checkbox-group {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 16px;
  }

  button[type="submit"] {
    width: auto;
    align-self: flex-end;
    padding: 14px 48px;
  }

  footer {
    flex-direction: row;
    justify-content: space-between;
    padding: 20px 40px;
  }
}