:root {
      --shadow-card: 0 1px 3px rgba(10,30,32,0.04), 0 6px 20px rgba(10,30,32,0.07);

              --glass: rgba(234,243,252,0.85);
              --cream:           #EAF3FC;
              --ink:             #0D1B2A;
              --rust:            #C0453A;
              --gold:            #4A9EE0;
              --green:           #2A7A5A;
              --muted:           #6B8FA8;
              --border:          #BACED8;
              --placeholder:     #8AAFC4;
              --surface-input:       rgba(240,248,255,0.95);
              --surface-overlay:     rgba(208,230,245,0.35);
              --shadow-btn:    0 4px 14px rgba(13,27,42,0.22);
              --sidebar-bg:      #1B3A5C;
              --surface-input-focus: #F5FAFF;
              --alert-error-bg:       rgba(192,69,58,0.08);
              --alert-error-border:   rgba(192,69,58,0.25);
              --alert-success-bg:     rgba(42,122,90,0.08);
              --alert-success-border: rgba(42,122,90,0.22);
    }

    * { box-sizing: border-box; }

    body {
      font-family: 'DM Sans', sans-serif;
      background-color: var(--cream);
      color: var(--ink);
      min-height: 100vh;
      display: grid;
      place-items: center;
      position: relative;
      overflow: hidden;
    }

    /* Background radial glow */
    body::before {
      content: '';
      position: fixed; inset: 0;
      background:
        radial-gradient(ellipse 70% 50% at 80% 10%, rgba(52,184,164,0.09) 0%, transparent 60%),
        radial-gradient(ellipse 50% 40% at 10% 90%, rgba(26,122,110,0.07) 0%, transparent 55%);
      pointer-events: none;
    }

    /* Grid texture */
    body::after {
      content: '';
      position: fixed; inset: 0;
      background-image:
        linear-gradient(#B8E2DA 1px, transparent 1px),
        linear-gradient(90deg, #B8E2DA 1px, transparent 1px);
      background-size: 48px 48px;
      opacity: 0.35;
      pointer-events: none;
    }

    /* Card */
    .card {
      position: relative; z-index: 1;
      background: var(--glass);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border: 1px solid var(--border);
      border-radius: 2px;
      box-shadow:
        0 1px 2px rgba(26,22,18,0.04),
        0 8px 32px rgba(26,22,18,0.08),
        inset 0 1px 0 rgba(255,255,255,0.6);
      width: 100%;
      max-width: 420px;
      padding: 48px 44px 44px;
      animation: cardIn 0.55s cubic-bezier(0.16,1,0.3,1) both;
    }

    @keyframes cardIn {
      from { opacity: 0; transform: translateY(18px) scale(0.98); }
      to   { opacity: 1; transform: translateY(0)   scale(1); }
    }

    .serif { font-family: 'Instrument Serif', serif; }

    /* Field */
    .field label {
      display: block;
      font-size: 11px; font-weight: 600;
      letter-spacing: 0.1em; text-transform: uppercase;
      color: var(--muted); margin-bottom: 8px;
      transition: color 0.2s;
    }
    .field:focus-within label { color: var(--ink); }

    .field input {
      width: 100%;
      background: var(--surface-input);
      border: 1px solid var(--border); border-radius: 2px;
      padding: 12px 14px;
      font-family: 'DM Sans', sans-serif; font-size: 14.5px;
      color: var(--ink); outline: none;
      transition: border-color 0.2s, box-shadow 0.2s, background 0.2s;
    }
    .field input::placeholder { color: var(--placeholder); }
    .field input:focus {
      border-color: var(--gold);
      background: var(--surface-input-focus);
      box-shadow: 0 0 0 3px var(--focus-ring);
    }
    .field input.input-error {
      border-color: var(--rust);
      box-shadow: 0 0 0 3px rgba(185,74,44,0.10);
    }

    /* Inline field error */
    .field-error {
      font-size: 12px; color: var(--rust);
      margin-top: 6px; display: none;
      animation: fadeSlide 0.2s ease;
    }
    .field-error.visible { display: block; }

    /* Alert banners */
    .alert {
      border-radius: 2px;
      padding: 12px 14px;
      font-size: 13.5px;
      margin-bottom: 24px;
      animation: fadeSlide 0.3s ease;
      display: flex; align-items: flex-start; gap: 10px;
      line-height: 1.5;
    }
    .alert svg { flex-shrink: 0; margin-top: 1px; }

    .alert-error {
      background: var(--alert-error-bg);
      border: 1px solid var(--alert-error-border);
      border-left: 3px solid var(--rust);
      color: var(--rust);
    }
    .alert-success {
      background: var(--alert-success-bg);
      border: 1px solid var(--alert-success-border);
      border-left: 3px solid var(--green);
      color: var(--green);
    }

    /* Hide empty Thymeleaf banners */
    .alert:empty { display: none; }

    @keyframes fadeSlide {
      from { opacity: 0; transform: translateY(-5px); }
      to   { opacity: 1; transform: translateY(0); }
    }

    /* Submit button */
    .btn-primary {
        width: 100%;
          align-items: center; gap: 8px;
          background: var(--ink); color: var(--cream);
          border: none; border-radius: 2px;
          padding: 13px 20px;
          font-family: 'DM Sans', sans-serif; font-size: 14px; font-weight: 500;
          letter-spacing: 0.04em; cursor: pointer;
          transition: background 0.2s, transform 0.15s, box-shadow 0.2s;
          position: relative; overflow: hidden; text-decoration: none;
        }
        .btn-primary::after { content:''; position:absolute; inset:0; background:linear-gradient(135deg,rgba(255,255,255,0.07) 0%,transparent 60%); pointer-events:none; }
        .btn-primary:hover { background:var(--sidebar-bg); box-shadow:var(--shadow-btn); transform:translateY(-1px); }
        .btn-primary:active { transform:translateY(0); box-shadow:none; }
        .btn-primary:disabled { opacity:0.55; cursor:not-allowed; transform:none; box-shadow:none; }

    /* Back link */
    .back-link {
      display: inline-flex; align-items: center; gap: 6px;
      font-size: 13px; color: var(--muted); text-decoration: none;
      transition: color 0.15s;
      margin-top: 20px;
    }
    .back-link:hover { color: var(--ink); }

    /* Steps indicator */
    .steps {
      display: flex; align-items: center; gap: 0;
      margin-bottom: 28px;
    }
    .step {
      display: flex; flex-direction: column; align-items: center;
      gap: 5px; flex: 1; position: relative;
    }
    .step:not(:last-child)::after {
      content: '';
      position: absolute; top: 11px; left: calc(50% + 14px);
      right: calc(-50% + 14px);
      height: 1px; background: var(--border);
    }
    .step-dot {
      width: 22px; height: 22px; border-radius: 50%;
      border: 1.5px solid var(--border);
      background: var(--surface-overlay);
      display: grid; place-items: center;
      font-size: 10px; font-weight: 700;
      color: var(--muted);
      transition: all 0.3s;
    }
    .step.active .step-dot {
      background: var(--ink); border-color: var(--ink);
      color: var(--cream);
    }
    .step.done .step-dot {
      background: var(--green); border-color: var(--green);
      color: white;
    }
    .step-label {
      font-size: 10px; font-weight: 500; letter-spacing: 0.05em;
      text-transform: uppercase; color: var(--muted); white-space: nowrap;
    }
    .step.active .step-label { color: var(--ink); }
    .step.done .step-label   { color: var(--green); }