@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700&display=swap');

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

:root {
  --blue-dark:   #1a3a6b;
  --blue:        #1d6fa4;
  --blue-light:  #e8f2fb;
  --red:         #c0392b;
  --red-light:   #fdf2f1;
  --grey-border: #d1d9e0;
  --grey-label:  #4a5568;
  --grey-hint:   #718096;
  --white:       #ffffff;
  --shadow:      0 4px 24px rgba(26,58,107,0.13);
}

html { height: 100%; }

body {
  font-family: 'Inter', 'Segoe UI', Arial, sans-serif;
  min-height: 100%;
  background: linear-gradient(145deg, #dde9f7 0%, #eef3fa 50%, #f5f7fb 100%);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 32px 16px 48px;
  color: #2d3748;
}

/* ── Page header ─────────────────────────────────────── */
.page-header {
  text-align: center;
  margin-bottom: 28px;
}

.page-header .gov-logo {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--blue-dark);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  opacity: 0.75;
}

/* ── Card ─────────────────────────────────────────────── */
.card {
  background: var(--white);
  border-radius: 14px;
  box-shadow: var(--shadow);
  width: 100%;
  max-width: 520px;
  overflow: hidden;
}

.card-header {
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue) 100%);
  padding: 28px 36px 26px;
  position: relative;
}

.card-header::after {
  content: '';
  position: absolute;
  bottom: -1px; left: 0; right: 0;
  height: 6px;
  background: linear-gradient(90deg, #f0a500 0%, #f5c842 50%, #f0a500 100%);
}

.card-header h1 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--white);
  letter-spacing: -0.01em;
  margin-bottom: 4px;
}

.card-header .school-year {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.9);
  font-weight: 600;
  margin-top: 4px;
  margin-bottom: 2px;
}

.card-header .subtitle {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.75);
  line-height: 1.5;
  font-weight: 400;
}

.card-body {
  padding: 32px 36px 36px;
}

.disclaimer {
  padding: 12px 36px;
  background: #f0f4f8;
  border-left: 4px solid #1a3a6b;
  font-size: 0.875rem;
  color: #444;
  font-style: italic;
  line-height: 1.5;
}

/* ── Alert ────────────────────────────────────────────── */
.alert-errors {
  display: flex;
  gap: 12px;
  background: var(--red-light);
  border: 1px solid #f5c6c3;
  border-radius: 8px;
  padding: 14px 16px;
  margin-bottom: 28px;
  font-size: 0.82rem;
  color: #922b21;
  line-height: 1.5;
}

.alert-errors .alert-icon { flex-shrink: 0; margin-top: 1px; }

.alert-errors ul {
  padding-left: 16px;
  margin-top: 4px;
}

/* ── Fields ───────────────────────────────────────────── */
.field {
  margin-bottom: 22px;
}

label {
  display: block;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--grey-label);
  margin-bottom: 6px;
  letter-spacing: 0.01em;
}

label .required {
  color: var(--red);
  margin-left: 3px;
}

.input-wrap {
  position: relative;
}

.input-wrap .input-icon {
  position: absolute;
  left: 13px;
  top: 50%;
  transform: translateY(-50%);
  color: #a0aec0;
  pointer-events: none;
  transition: color 0.2s;
}

select.select-field,
input[type="text"],
input[type="number"],
input[type="date"] {
  width: 100%;
  padding: 11px 14px 11px 40px;
  border: 1.5px solid var(--grey-border);
  border-radius: 8px;
  font-size: 0.975rem;
  font-family: inherit;
  background: #fafbfc;
  color: #2d3748;
  transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
  appearance: none;
}

select.select-field {
  padding-left: 14px;
  cursor: pointer;
}

select.select-field:focus,
input[type="text"]:focus,
input[type="number"]:focus,
input[type="date"]:focus {
  outline: none;
  border-color: var(--blue);
  background: var(--white);
  box-shadow: 0 0 0 3px rgba(29,111,164,0.12);
}

input[type="text"]:focus + .input-icon,
.input-wrap:focus-within .input-icon {
  color: var(--blue);
}

select.select-field.is-invalid,
input[type="text"].is-invalid,
input[type="number"].is-invalid,
input[type="date"].is-invalid {
  border-color: var(--red);
  background: var(--red-light);
}

input[type="text"].is-invalid:focus,
input[type="number"].is-invalid:focus,
input[type="date"].is-invalid:focus {
  box-shadow: 0 0 0 3px rgba(192,57,43,0.12);
}

.error-message {
  display: flex;
  align-items: center;
  gap: 5px;
  font-size: 0.775rem;
  color: var(--red);
  margin-top: 5px;
  font-weight: 500;
}

.field-hint {
  font-size: 0.75rem;
  color: var(--grey-hint);
  margin-top: 4px;
}

/* ── Form sections ────────────────────────────────────── */
.form-section {
  margin-bottom: 28px;
}

.form-section-title {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--blue-dark);
  text-transform: uppercase;
  letter-spacing: 0.09em;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--blue-light);
}

.field-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 16px;
}

@media (max-width: 480px) {
  .field-row { grid-template-columns: 1fr; }
}

/* ── Divider ──────────────────────────────────────────── */
.divider {
  height: 1px;
  background: #edf2f7;
  margin: 8px 0 26px;
}

/* ── Submit button ────────────────────────────────────── */
.btn-submit {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 9px;
  width: 100%;
  padding: 13px 20px;
  background: linear-gradient(135deg, var(--blue-dark) 0%, var(--blue) 100%);
  color: var(--white);
  border: none;
  border-radius: 8px;
  font-size: 0.975rem;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  letter-spacing: 0.01em;
  box-shadow: 0 2px 8px rgba(26,58,107,0.25);
  transition: filter 0.2s, box-shadow 0.2s, transform 0.1s;
}

.btn-submit:hover {
  filter: brightness(1.08);
  box-shadow: 0 4px 16px rgba(26,58,107,0.32);
}

.btn-submit:active {
  transform: scale(0.99);
}

input[type="submit"].btn-submit {
  display: block;
}

/* ── Footer note ─────────────────────────────────────── */
.form-note {
  margin-top: 18px;
  text-align: center;
  font-size: 0.75rem;
  color: var(--grey-hint);
  line-height: 1.6;
}

/* ── Duration field (έτη / μήνες / μέρες) ────────────── */
.duration-group {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 12px;
}

.duration-group .field {
  margin-bottom: 0;
}

.duration-group label {
  font-size: 0.78rem;
  color: var(--grey-hint);
  font-weight: 500;
  margin-bottom: 4px;
}

.duration-group input[type="number"] {
  text-align: center;
  padding-left: 14px;
}

/* ── Specialty label ──────────────────────────────────── */
.specialty-label {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--blue-light);
  color: var(--blue-dark);
  border-radius: 5px;
  padding: 5px 11px;
  font-size: 0.8rem;
  font-weight: 600;
  margin-top: 6px;
}

/* ── Radio group ──────────────────────────────────────── */
.radio-group {
  display: flex;
  gap: 24px;
  padding: 4px 0;
}

.radio-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--grey-label);
}

input[type="radio"] {
  width: 17px;
  height: 17px;
  accent-color: var(--blue-dark);
  cursor: pointer;
  flex-shrink: 0;
}

/* ── Checkbox group ──────────────────────────────────── */
.checkbox-group {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 24px;
  padding: 4px 0;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--grey-label);
}

input[type="checkbox"] {
  width: 17px;
  height: 17px;
  accent-color: var(--blue-dark);
  cursor: pointer;
  flex-shrink: 0;
}

/* ── Responsive ──────────────────────────────────────── */
@media (max-width: 560px) {
  .card-header { padding: 22px 22px 20px; }
  .card-body   { padding: 24px 22px 28px; }
}