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

:root {
  --ddi-blue:       #263d7b;
  --ddi-blue-light: #e8ecf6;
  --ddi-border:     #c8d2e8;
  --ddi-text:       #1a2340;
  --ddi-muted:      #6b7a9e;
}

.ddi-wrapper * { box-sizing: border-box; margin: 0; padding: 0; }
.ddi-wrapper { max-width: 760px; margin: 0 auto; font-family: 'Montserrat', sans-serif; font-size: 14px; color: var(--ddi-text); }

/* Stepper */
.ddi-stepper { display: flex; align-items: center; margin-bottom: 32px; }
.ddi-step { display: flex; flex-direction: column; align-items: center; gap: 6px; flex-shrink: 0; }
.ddi-step-circle { width: 38px; height: 38px; border-radius: 50%; border: 2px solid var(--ddi-border); background: #fff; color: var(--ddi-border); font-size: 14px; font-weight: 700; display: flex; align-items: center; justify-content: center; transition: all .25s; }
.ddi-step-label { font-size: 11px; color: var(--ddi-muted); font-weight: 600; white-space: nowrap; text-transform: uppercase; letter-spacing: .05em; transition: color .25s; }
.ddi-step.active .ddi-step-circle { background: var(--ddi-blue); border-color: var(--ddi-blue); color: #fff; box-shadow: 0 0 0 4px rgba(38,61,123,.15); }
.ddi-step.active .ddi-step-label  { color: var(--ddi-blue); }
.ddi-step.done  .ddi-step-circle  { background: var(--ddi-blue); border-color: var(--ddi-blue); color: #fff; }
.ddi-step.done  .ddi-step-label   { color: var(--ddi-blue); }
.ddi-step-line { flex: 1; height: 2px; background: var(--ddi-border); margin: 0 8px; margin-bottom: 22px; transition: background .3s; }
.ddi-step-line.done { background: var(--ddi-blue); }

/* Pane */
.ddi-pane-title { font-size: 18px; font-weight: 700; color: var(--ddi-blue); margin-bottom: 20px; padding-bottom: 10px; border-bottom: 2px solid var(--ddi-blue); display: inline-block; }

/* Grid & Fields */
.ddi-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 14px; }
@media (max-width: 600px) { .ddi-grid { grid-template-columns: 1fr; } }
.ddi-field { display: flex; flex-direction: column; gap: 5px; }
.ddi-field-full { margin-top: 6px; }
.ddi-field label { font-size: 12px; font-weight: 600; color: var(--ddi-blue); text-transform: uppercase; letter-spacing: .04em; }
.ddi-req { color: var(--ddi-blue); }
.ddi-field select,
.ddi-field input { height: 44px; padding: 0 14px; font-size: 14px; font-family: 'Montserrat', sans-serif; border: 1.5px solid var(--ddi-border); border-radius: 8px; background: #f7f9fd; color: var(--ddi-text); transition: border-color .2s, box-shadow .2s; width: 100%; }
.ddi-field select:focus, .ddi-field input:focus { outline: none; border-color: var(--ddi-blue); box-shadow: 0 0 0 3px rgba(38,61,123,.15); background: #fff; }

/* Hint */
.ddi-hint { font-size: 13px; font-weight: 500; color: var(--ddi-blue); background: var(--ddi-blue-light); border-left: 3px solid var(--ddi-blue); border-radius: 0 6px 6px 0; padding: 10px 14px; margin-bottom: 14px; }

/* Diagnostics */
.ddi-diags { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-bottom: 16px; }
@media (max-width: 500px) { .ddi-diags { grid-template-columns: 1fr; } }
.ddi-diag-check { display: flex; align-items: center; gap: 10px; padding: 12px 16px; border: 1.5px solid var(--ddi-border); border-radius: 8px; cursor: pointer; font-size: 14px; font-weight: 500; font-family: 'Montserrat', sans-serif; background: #f7f9fd; transition: all .2s; user-select: none; }
.ddi-diag-check:hover { background: var(--ddi-blue-light); border-color: var(--ddi-blue); color: var(--ddi-blue); }
.ddi-diag-check.selected { background: var(--ddi-blue-light); border-color: var(--ddi-blue); color: var(--ddi-blue); font-weight: 700; }
.ddi-diag-check input[type="checkbox"] { accent-color: var(--ddi-blue); width: 17px; height: 17px; cursor: pointer; flex-shrink: 0; }

/* Nav */
.ddi-nav-row { display: flex; justify-content: space-between; align-items: center; margin-top: 22px; gap: 12px; }

/* Buttons */
.ddi-btn-primary { padding: 13px 28px; font-size: 14px; font-weight: 700; font-family: 'Montserrat', sans-serif; text-transform: uppercase; letter-spacing: .05em; background: var(--ddi-blue); color: #fff; border: none; border-radius: 8px; cursor: pointer; transition: opacity .2s, transform .1s; box-shadow: 0 4px 14px rgba(38,61,123,.25); }
.ddi-btn-primary:hover { opacity: .88; transform: translateY(-1px); }
.ddi-btn-primary:disabled { opacity: .5; cursor: not-allowed; transform: none; }
.ddi-btn-secondary { padding: 12px 22px; font-size: 13px; font-weight: 600; font-family: 'Montserrat', sans-serif; background: #fff; color: var(--ddi-blue); border: 1.5px solid var(--ddi-blue); border-radius: 8px; cursor: pointer; }
.ddi-btn-secondary:hover { background: var(--ddi-blue-light); }

/* Messages */
.ddi-msg { padding: 12px 16px; border-radius: 8px; margin-bottom: 16px; font-size: 13px; font-weight: 600; }
.ddi-msg.error { background: #fdecea; color: #c0392b; border-left: 3px solid #c0392b; }

/* Success */
.ddi-success-banner { background: var(--ddi-blue-light); color: var(--ddi-blue); font-weight: 700; padding: 16px 20px; border-radius: 8px; border-left: 4px solid var(--ddi-blue); font-size: 15px; }

/* ── Stepper mobile ── */
@media (max-width: 600px) {
  .ddi-stepper {
    margin-bottom: 24px;
    align-items: flex-start;
  }
  .ddi-step {
    gap: 4px;
  }
  .ddi-step-circle {
    width: 26px;
    height: 26px;
    font-size: 11px;
  }
  .ddi-step-label {
    font-size: 8.5px;
    letter-spacing: .02em;
    text-align: center;
    max-width: 56px;
    white-space: normal;
    line-height: 1.2;
  }
  .ddi-step-line {
    margin: 0 3px;
    margin-bottom: 30px;
    margin-top: 13px;
    align-self: flex-start;
  }
}