/* ============================================================
   OTP VERIFICATION PAGE
   ============================================================ */
.otp-card {
    max-width: 520px;
    text-align: center;
}
.otp-icon {
    background: linear-gradient(135deg, #10b981, #06b6d4);
    box-shadow: 0 12px 28px -6px rgba(16,185,129,.5);
}

.otp-mobile {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: var(--ink-50);
    border: 1px solid var(--ink-100);
    padding: 10px 16px;
    border-radius: 999px;
    margin-top: 12px;
    font-size: 15px;
    color: var(--ink-800);
    font-weight: 600;
}
.otp-mobile i { color: var(--brand-600); }
.otp-mobile .change-link {
    font-size: 12px;
    color: var(--brand-600);
    font-weight: 600;
    margin-left: 4px;
    padding-left: 10px;
    border-left: 1px solid var(--ink-200);
}

/* ---------- OTP Input Boxes ---------- */
.otp-form {
    margin-top: 24px;
}
.otp-inputs {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 10px;
    max-width: 400px;
    margin: 0 auto 20px;
}
.otp-digit {
    width: 100%;
    aspect-ratio: 1;
    max-height: 62px;
    border: 2px solid var(--ink-200);
    border-radius: var(--r-md);
    text-align: center;
    font-size: 26px;
    font-weight: 700;
    color: var(--ink-900);
    background: var(--white);
    transition: var(--transition);
    font-family: 'Courier New', monospace;
    padding: 0;
    -moz-appearance: textfield;
}
.otp-digit::-webkit-outer-spin-button,
.otp-digit::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.otp-digit:focus {
    outline: none;
    border-color: var(--brand-500);
    box-shadow: 0 0 0 4px rgba(99,102,241,.15);
    transform: translateY(-2px);
}
.otp-digit:not(:placeholder-shown),
.otp-digit.filled {
    border-color: var(--brand-400);
    background: var(--brand-50);
}
.otp-digit:disabled {
    opacity: .5;
    background: var(--ink-100);
    cursor: not-allowed;
}

/* ---------- Timer ---------- */
.otp-timer {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13px;
    color: var(--ink-500);
    background: var(--ink-50);
    padding: 6px 14px;
    border-radius: 999px;
    margin-bottom: 18px;
    font-weight: 500;
}
.otp-timer i { color: var(--brand-500); }
.otp-timer.expired { color: var(--danger); background: #fef2f2; }
.otp-timer.expired i { color: var(--danger); }

/* ---------- Help Section ---------- */
.otp-help {
    margin-top: 20px;
    border-radius: var(--r-md);
    border: 1px solid var(--ink-100);
    overflow: hidden;
    text-align: left;
    background: var(--white);
}
.otp-help-toggle {
    width: 100%;
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 14px 18px;
    background: var(--ink-50);
    font-size: 14px;
    font-weight: 600;
    color: var(--ink-800);
    border: none;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
}
.otp-help-toggle:hover { background: var(--ink-100); }
.otp-help-toggle > i:first-child { color: var(--brand-600); }
.otp-help-toggle .toggle-arrow {
    margin-left: auto;
    font-size: 12px;
    color: var(--ink-400);
    transition: transform .3s;
}
.otp-help-toggle.open .toggle-arrow { transform: rotate(180deg); }

.otp-help-content {
    padding: 18px 20px;
    background: var(--white);
    border-top: 1px solid var(--ink-100);
    animation: fadeUp .3s ease;
}
.otp-help-content > p {
    font-size: 14px;
    color: var(--ink-600);
    margin-bottom: 12px;
    line-height: 1.6;
}
.otp-help-content ul {
    list-style: none;
    padding: 0;
    margin: 0;
}
.otp-help-content li {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 7px 0;
    font-size: 13.5px;
    color: var(--ink-600);
    line-height: 1.5;
}
.otp-help-content li i {
    color: var(--brand-500);
    margin-top: 3px;
    width: 16px;
    flex-shrink: 0;
}

/* ---------- Resend Section ---------- */
.otp-resend-section {
    margin-top: 22px;
    padding-top: 20px;
    border-top: 1px solid var(--ink-100);
}
.otp-resend-section > p {
    font-size: 14px;
    color: var(--ink-500);
    margin-bottom: 10px;
}
.btn-resend {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 999px;
    background: var(--white);
    color: var(--brand-600);
    border: 1.5px solid var(--brand-200);
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    min-height: 46px;
}
.btn-resend:hover:not(:disabled) {
    background: var(--brand-50);
    border-color: var(--brand-400);
    transform: translateY(-2px);
}
.btn-resend:disabled {
    opacity: .55;
    cursor: not-allowed;
    background: var(--ink-50);
    border-color: var(--ink-200);
    color: var(--ink-500);
}
.resend-timer {
    font-variant-numeric: tabular-nums;
    font-size: 13px;
}

/* ---------- Fallback Links ---------- */
.otp-fallbacks {
    display: flex;
    justify-content: center;
    gap: 22px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--ink-100);
    flex-wrap: wrap;
}
.otp-fallback-link {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 13.5px;
    color: var(--ink-500);
    font-weight: 500;
}
.otp-fallback-link:hover { color: var(--brand-600); }
.otp-fallback-link i { font-size: 12px; }

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(-8px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---------- Mobile ---------- */
@media (max-width: 480px) {
    .otp-inputs { gap: 6px; }
    .otp-digit { font-size: 20px; max-height: 52px; border-radius: 10px; border-width: 1.5px; }
    .otp-card { padding: 24px 18px; }
    .otp-mobile { font-size: 13px; padding: 8px 12px; }
    .otp-mobile .change-link { font-size: 11px; }
    .otp-fallbacks { gap: 14px; }
    .otp-fallback-link { font-size: 12.5px; }
}