/* فرم ورود irancts — موبایل‌محور */
.icn-auth {
    --icn-navy: #1e3a8a;
    --icn-navy-dark: #172e6e;
    --icn-ink: #1f2937;
    --icn-muted: #6b7280;
    --icn-line: #d6dbe6;
    --icn-bg: #f5f7fb;
    --icn-error: #b42318;
    --icn-radius: 12px;
    display: flex;
    justify-content: center;
    padding: 24px 16px;
    font-family: inherit;
    color: var(--icn-ink);
}
.icn-auth *, .icn-auth *::before, .icn-auth *::after { box-sizing: border-box; }
.icn-auth__card {
    width: 100%;
    max-width: 420px;
    background: #fff;
    border: 1px solid var(--icn-line);
    border-radius: 16px;
    padding: 28px 22px 24px;
    box-shadow: 0 8px 28px rgba(30, 58, 138, .08);
}
.icn-auth__step { display: flex; flex-direction: column; gap: 12px; margin: 0; }
.icn-auth__step[hidden] { display: none; }
.icn-auth__title { margin: 0; font-size: 1.35rem; font-weight: 700; color: var(--icn-navy); line-height: 1.5; }
.icn-auth__text { margin: 0; font-size: .95rem; line-height: 1.9; color: var(--icn-muted); }
.icn-auth__label { font-size: .9rem; font-weight: 600; margin-top: 4px; }
.icn-auth__input {
    width: 100%;
    height: 50px;
    padding: 0 14px;
    font-size: 16px; /* جلوگیری از زوم خودکار iOS */
    font-family: inherit;
    border: 1.5px solid var(--icn-line);
    border-radius: var(--icn-radius);
    background: var(--icn-bg);
    color: var(--icn-ink);
    transition: border-color .15s, background .15s;
}
.icn-auth__input:focus { outline: none; border-color: var(--icn-navy); background: #fff; box-shadow: 0 0 0 3px rgba(30, 58, 138, .12); }
.icn-auth__ltr { direction: ltr; unicode-bidi: isolate; }
input.icn-auth__ltr { text-align: left; }
.icn-auth__code { text-align: center !important; font-size: 1.5rem; letter-spacing: .5em; font-weight: 700; }
.icn-auth__btn {
    display: flex; align-items: center; justify-content: center;
    width: 100%; height: 50px; margin-top: 4px;
    border: 0; border-radius: var(--icn-radius);
    background: var(--icn-navy); color: #fff !important;
    font-size: 1rem; font-weight: 700; font-family: inherit;
    text-decoration: none; cursor: pointer;
    transition: background .15s, opacity .15s;
}
.icn-auth__btn:hover { background: var(--icn-navy-dark); }
.icn-auth__btn:focus-visible { outline: 3px solid rgba(30, 58, 138, .35); outline-offset: 2px; }
.icn-auth__btn:disabled { opacity: .6; cursor: wait; }
.icn-auth__error { margin: 0; padding: 10px 12px; border-radius: 10px; background: #fef3f2; color: var(--icn-error); font-size: .9rem; line-height: 1.8; }
.icn-auth__error[hidden] { display: none; }
.icn-auth__inline { background: none; border: 0; padding: 0; color: var(--icn-navy); font: inherit; font-weight: 600; cursor: pointer; text-decoration: underline; text-underline-offset: 3px; }
.icn-auth__inline[hidden] { display: none; }
.icn-auth__resend { margin: 4px 0 0; text-align: center; font-size: .9rem; color: var(--icn-muted); min-height: 1.6em; }
.icn-auth__check { display: flex; align-items: center; gap: 8px; font-size: .9rem; color: var(--icn-muted); cursor: pointer; }
.icn-auth__check input { width: 18px; height: 18px; accent-color: var(--icn-navy); }
.icn-auth__link { display: block; text-align: center; margin-top: 14px; color: var(--icn-muted); font-size: .9rem; }
@media (min-width: 600px) {
    .icn-auth { padding: 48px 16px; }
    .icn-auth__card { padding: 36px 32px 30px; }
}
@media (prefers-reduced-motion: reduce) {
    .icn-auth__input, .icn-auth__btn { transition: none; }
}