@import url('https://fonts.googleapis.com/css2?family=DM+Mono:wght@400;500&family=DM+Sans:wght@300;400;500&display=swap');

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

:root {
  --bg: #0f1117;
  --surface: #181c27;
  --border: #2a2f3d;
  --border-focus: #4a6fa5;
  --accent: #4a6fa5;
  --accent-hover: #5a82bc;
  --text: #e8eaf0;
  --text-muted: #6b7280;
  --text-label: #9aa3b0;
  --error: #e05555;
  --mono: 'DM Mono', monospace;
  --sans: 'DM Sans', sans-serif;
}

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--text);
  height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image:
    linear-gradient(var(--border) 1px, transparent 1px),
    linear-gradient(90deg, var(--border) 1px, transparent 1px);
  background-size: 48px 48px;
  opacity: 0.3;
  pointer-events: none;
}

.login-wrapper {
  position: relative;
  width: 100%;
  max-width: 380px;
  padding: 1rem;
  animation: fadeUp 0.4s ease both;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.login-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 2.5rem 2rem;
}

.login-header {
  margin-bottom: 2rem;
}

.login-logo {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.login-logo span {
  display: inline-block;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  margin-right: 8px;
  vertical-align: middle;
  animation: pulse 2s ease infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.3; }
}

.login-title {
  font-size: 1.5rem;
  font-weight: 300;
  color: var(--text);
  letter-spacing: -0.02em;
}

.login-title strong {
  font-weight: 500;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-label);
  margin-bottom: 0.5rem;
}

.form-group input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  font-family: var(--mono);
  font-size: 0.9rem;
  color: var(--text);
  outline: none;
  transition: border-color 0.15s;
  -webkit-appearance: none;
}

.form-group input::placeholder {
  color: var(--text-muted);
}

.form-group input:focus {
  border-color: var(--border-focus);
}

.btn-submit {
  width: 100%;
  margin-top: 1.75rem;
  padding: 0.85rem;
  background: var(--accent);
  border: none;
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #fff;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s;
}

.btn-submit:hover {
  background: var(--accent-hover);
}

.btn-submit:active {
  transform: scale(0.98);
}

.login-footer {
  margin-top: 1.5rem;
  text-align: center;
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: var(--text-muted);
}

.forgot-password {
  text-align: center;
  margin-top: 0.75rem;
}

.forgot-password a {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.forgot-password a:hover {
  color: var(--accent);
}
 /* ── Step management ── */
        .step { display: none; }
        .step.active { display: block; animation: fadeUp 0.3s ease both; }

        /* ── OTP input ── */
        .otp-input {
            width: 100%;
            background: var(--bg);
            border: 1px solid var(--border);
            border-radius: 6px;
            padding: 0.75rem 1rem;
            font-family: var(--mono);
            font-size: 1.6rem;
            font-weight: 500;
            letter-spacing: 0.4em;
            text-align: center;
            color: var(--accent);
            outline: none;
            transition: border-color 0.15s;
            -webkit-appearance: none;
        }
        .otp-input::placeholder {
            color: var(--text-muted);
            letter-spacing: 0.2em;
            font-size: 1rem;
        }
        .otp-input:focus { border-color: var(--border-focus); }

        /* ── Feedback messages ── */
        .msg {
            font-family: var(--mono);
            font-size: 0.7rem;
            letter-spacing: 0.08em;
            margin-top: 0.75rem;
            display: none;
        }
        .msg.error   { color: var(--error); }
        .msg.success { color: #4caf7d; }
        .msg.visible { display: block; }

        /* ── Timer ── */
        .timer {
            font-family: var(--mono);
            font-size: 0.68rem;
            letter-spacing: 0.08em;
            color: var(--text-muted);
            text-align: center;
            margin-top: 0.6rem;
            min-height: 1.2em;
            transition: color 0.3s;
        }
        .timer.scaduto { color: var(--error); }

        /* ── Reinvia link ── */
        .reinvia-wrap {
            text-align: center;
            margin-top: 1rem;
        }
        .btn-reinvia {
            background: none;
            border: none;
            font-family: var(--mono);
            font-size: 0.68rem;
            letter-spacing: 0.08em;
            color: var(--text-muted);
            cursor: pointer;
            text-decoration: underline;
            padding: 0;
            transition: color 0.15s;
        }
        .btn-reinvia:hover:not(:disabled) { color: var(--accent); }
        .btn-reinvia:disabled {
            color: var(--border);
            cursor: not-allowed;
            text-decoration: none;
        }

        /* ── Email highlight nello step 2 ── */
        .email-badge {
            font-family: var(--mono);
            font-size: 0.72rem;
            letter-spacing: 0.05em;
            color: var(--accent);
            background: rgba(74, 111, 165, 0.1);
            border: 1px solid rgba(74, 111, 165, 0.25);
            border-radius: 4px;
            padding: 0.3rem 0.6rem;
            display: inline-block;
            margin-bottom: 1.25rem;
            word-break: break-all;
        }

        /* ── Sottotitolo step ── */
        .step-subtitle {
            font-family: var(--mono);
            font-size: 0.72rem;
            letter-spacing: 0.06em;
            color: var(--text-muted);
            margin-bottom: 1.5rem;
            line-height: 1.6;
        }

        /* ── Password strength bar ── */
        .strength-bar {
            height: 2px;
            background: var(--border);
            border-radius: 2px;
            margin-top: 0.4rem;
            overflow: hidden;
        }
        .strength-fill {
            height: 100%;
            width: 0%;
            border-radius: 2px;
            transition: width 0.3s, background 0.3s;
        }

        /* ── Back link ── */
        .back-link {
            text-align: center;
            margin-top: 1rem;
        }
        .back-link a {
            font-family: var(--mono);
            font-size: 0.68rem;
            letter-spacing: 0.08em;
            color: var(--text-muted);
            text-decoration: none;
            transition: color 0.15s;
        }
        .back-link a:hover { color: var(--accent); }

        /* ── Success state ── */
        .success-icon {
            text-align: center;
            font-size: 2rem;
            margin-bottom: 1rem;
        }