/* Zarin Chart authentication experience — scoped, responsive, RTL and dark-mode safe. */
.zca-shell {
    --zca-accent: #0b7285;
    --zca-accent-strong: #075968;
    --zca-accent-soft: #e6f6f8;
    --zca-ink: #102a43;
    --zca-muted: #52677c;
    --zca-line: #d9e3eb;
    --zca-surface: #ffffff;
    --zca-canvas: #f3f7f9;
    --zca-danger: #b42318;
    --zca-danger-soft: #fff0ee;
    --zca-success: #08765b;
    --zca-shadow: 0 30px 80px -48px rgba(12, 37, 58, .48);
    --zca-ease: cubic-bezier(.2, 0, 0, 1);
    position: relative;
    isolation: isolate;
    min-height: calc(100dvh - 76px);
    overflow: hidden;
    background: var(--zca-canvas);
    color: var(--zca-ink);
    padding: clamp(24px, 5vw, 72px) 16px;
    direction: rtl;
}
.zca-shell[data-mode="register"] { --zca-accent: #08765b; --zca-accent-strong: #075d48; --zca-accent-soft: #e7f7f1; }
.zca-shell[data-mode="recovery"] { --zca-accent: #9a6b18; --zca-accent-strong: #755012; --zca-accent-soft: #fff5dc; }
.dark .zca-shell {
    --zca-ink: #edf5fa;
    --zca-muted: #a9bac8;
    --zca-line: #294257;
    --zca-surface: #102536;
    --zca-canvas: #091824;
    --zca-accent-soft: #153744;
    --zca-danger: #ff9b91;
    --zca-danger-soft: #442526;
    --zca-success: #69dab7;
    --zca-shadow: 0 34px 90px -42px rgba(0, 0, 0, .72);
}
.dark .zca-shell[data-mode="register"] { --zca-accent-soft: #16382f; }
.dark .zca-shell[data-mode="recovery"] { --zca-accent-soft: #3b321d; }
.zca-shell::before {
    content: "";
    position: absolute;
    inset: 0;
    z-index: -2;
    background-image: linear-gradient(rgba(82, 103, 124, .075) 1px, transparent 1px), linear-gradient(90deg, rgba(82, 103, 124, .075) 1px, transparent 1px);
    background-size: 48px 48px;
    mask-image: linear-gradient(to bottom, #000 0, rgba(0, 0, 0, .38) 70%, transparent 100%);
}
.zca-shell::after {
    content: "";
    position: absolute;
    z-index: -1;
    width: min(640px, 82vw);
    aspect-ratio: 1;
    top: -36%;
    left: -10%;
    border-radius: 50%;
    background: color-mix(in srgb, var(--zca-accent) 18%, transparent);
    filter: blur(110px);
    pointer-events: none;
}
.zca-wrap { width: min(1180px, 100%); margin-inline: auto; }
.zca-back {
    display: inline-flex;
    min-height: 46px;
    align-items: center;
    gap: 9px;
    margin-bottom: 18px;
    padding: 0 14px;
    border-radius: 14px;
    color: var(--zca-muted);
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    transition: color 140ms var(--zca-ease), background-color 140ms var(--zca-ease), transform 140ms var(--zca-ease);
    touch-action: manipulation;
}
.zca-back:hover { color: var(--zca-ink); background: color-mix(in srgb, var(--zca-surface) 78%, transparent); }
.zca-back:active { transform: scale(.98); }
.zca-back svg { width: 18px; height: 18px; }
.zca-frame {
    display: grid;
    grid-template-areas: "visual form";
    grid-template-columns: minmax(0, .92fr) minmax(420px, 1.08fr);
    overflow: hidden;
    border: 1px solid var(--zca-line);
    border-radius: 34px;
    background: var(--zca-surface);
    box-shadow: var(--zca-shadow);
}
.zca-card {
    grid-area: form;
    min-width: 0;
    padding: clamp(28px, 4vw, 54px);
    background: var(--zca-surface);
}
.zca-visual {
    grid-area: visual;
    position: relative;
    min-width: 0;
    overflow: hidden;
    padding: clamp(32px, 4vw, 56px);
    background: #102a43;
    color: #f7fbfd;
}
.zca-visual::before {
    content: "";
    position: absolute;
    inset: 0;
    opacity: .34;
    background-image: linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px);
    background-size: 52px 52px;
    mask-image: linear-gradient(145deg, #000, transparent 78%);
}
.zca-visual > * { position: relative; z-index: 1; }
.zca-brand { display: flex; align-items: center; gap: 12px; color: inherit; text-decoration: none; }
.zca-brand img { width: 42px; height: 42px; object-fit: contain; }
.zca-brand strong { display: block; font-size: 16px; font-weight: 900; }
.zca-brand span { display: block; margin-top: 1px; color: #a9c2d3; font-size: 12px; }
.zca-eyebrow {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    margin-top: clamp(48px, 8vw, 92px);
    color: #c8dce8;
    font-size: 13px;
    font-weight: 700;
}
.zca-eyebrow::before { content: ""; width: 22px; height: 2px; border-radius: 2px; background: #65d6b6; }
.zca-visual h2 { max-width: 480px; margin: 18px 0 0; font-size: clamp(30px, 4vw, 48px); line-height: 1.35; font-weight: 950; text-wrap: balance; }
.zca-visual-copy { max-width: 490px; margin: 20px 0 0; color: #c1d3df; font-size: 16px; line-height: 1.9; text-wrap: pretty; }
.zca-signal {
    margin-top: clamp(42px, 7vw, 76px);
    padding-top: 22px;
    border-top: 1px solid rgba(255,255,255,.14);
}
.zca-signal-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; color: #bcd0dc; font-size: 12px; }
.zca-live { display: inline-flex; align-items: center; gap: 7px; }
.zca-live::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: #65d6b6; box-shadow: 0 0 0 5px rgba(101,214,182,.12); }
.zca-chart { display: block; width: 100%; height: 110px; margin-top: 10px; overflow: visible; }
.zca-chart-grid { stroke: rgba(255,255,255,.1); stroke-width: 1; }
.zca-chart-line { fill: none; stroke: #65d6b6; stroke-width: 3; stroke-linecap: round; stroke-linejoin: round; stroke-dasharray: 420; stroke-dashoffset: 0; }
.zca-chart-dot { fill: #102a43; stroke: #65d6b6; stroke-width: 3; }
.zca-security-note { display: flex; align-items: flex-start; gap: 11px; margin-top: 22px; color: #bcd0dc; font-size: 13px; line-height: 1.8; }
.zca-security-note svg { width: 20px; height: 20px; flex: 0 0 auto; margin-top: 2px; color: #65d6b6; }
.zca-mobile-brand { display: none; align-items: center; gap: 10px; margin-bottom: 28px; color: var(--zca-ink); text-decoration: none; }
.zca-mobile-brand img { width: 40px; height: 40px; object-fit: contain; }
.zca-mobile-brand strong { font-size: 16px; }
.zca-kicker { margin: 0 0 10px; color: var(--zca-accent); font-size: 13px; font-weight: 850; }
.zca-title { margin: 0; color: var(--zca-ink); font-size: clamp(28px, 4vw, 38px); line-height: 1.35; font-weight: 950; text-wrap: balance; }
.zca-intro { max-width: 58ch; margin: 12px 0 0; color: var(--zca-muted); font-size: 15px; line-height: 1.9; text-wrap: pretty; }
.zca-alert {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    margin-top: 22px;
    padding: 13px 14px;
    border: 1px solid color-mix(in srgb, var(--zca-danger) 24%, transparent);
    border-radius: 14px;
    background: var(--zca-danger-soft);
    color: var(--zca-danger);
    font-size: 14px;
    line-height: 1.75;
}
.zca-alert[data-tone="success"] { border-color: color-mix(in srgb, var(--zca-success) 25%, transparent); background: color-mix(in srgb, var(--zca-success) 10%, var(--zca-surface)); color: var(--zca-success); }
.zca-alert svg { width: 20px; height: 20px; flex: 0 0 auto; margin-top: 2px; }
.zca-form { margin-top: 28px; }
.zca-field { margin-top: 18px; }
.zca-field:first-child { margin-top: 0; }
.zca-register-optional-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.zca-register-optional-grid .zca-field { min-width: 0; margin-top: 0; }
.zca-optional { color: var(--zca-muted); font-size: 12px; font-weight: 600; }
.zca-label { display: block; margin-bottom: 8px; color: var(--zca-ink); font-size: 14px; font-weight: 800; }
.zca-helper { display: block; margin-top: 7px; color: var(--zca-muted); font-size: 12px; line-height: 1.65; }
.zca-control { position: relative; }
.zca-input {
    width: 100%;
    min-height: 52px;
    border: 1px solid var(--zca-line);
    border-radius: 14px;
    background: color-mix(in srgb, var(--zca-surface) 92%, var(--zca-canvas));
    color: var(--zca-ink);
    padding: 0 15px;
    font-size: 16px;
    line-height: 1.5;
    outline: 3px solid transparent;
    outline-offset: 2px;
    transition: border-color 140ms var(--zca-ease), box-shadow 140ms var(--zca-ease), background-color 140ms var(--zca-ease);
}
.zca-input::placeholder { color: color-mix(in srgb, var(--zca-muted) 68%, transparent); }
.zca-input:hover { border-color: color-mix(in srgb, var(--zca-accent) 42%, var(--zca-line)); }
.zca-input:focus-visible { outline-color: color-mix(in srgb, var(--zca-accent) 52%, transparent); border-color: var(--zca-accent); box-shadow: 0 0 0 4px color-mix(in srgb, var(--zca-accent) 16%, transparent); background: var(--zca-surface); }
.zca-input[readonly] { background: var(--zca-canvas); color: var(--zca-muted); }
.zca-control .zca-input { padding-left: 56px; }
.zca-password-toggle {
    position: absolute;
    left: 5px;
    top: 4px;
    display: inline-flex;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    border: 0;
    border-radius: 11px;
    background: transparent;
    color: var(--zca-muted);
    cursor: pointer;
    transition: color 120ms var(--zca-ease), background-color 120ms var(--zca-ease), transform 120ms var(--zca-ease);
    touch-action: manipulation;
}
.zca-password-toggle:hover { color: var(--zca-accent); background: var(--zca-accent-soft); }
.zca-password-toggle:active { transform: scale(.94); }
.zca-password-toggle svg { width: 20px; height: 20px; }
.zca-check { display: flex; align-items: flex-start; gap: 10px; min-height: 44px; margin-top: 18px; color: var(--zca-muted); font-size: 13px; line-height: 1.8; cursor: pointer; }
.zca-check input { width: 18px; height: 18px; flex: 0 0 auto; margin-top: 3px; accent-color: var(--zca-accent); }
.zca-check a, .zca-link { color: var(--zca-accent); font-weight: 800; text-decoration: none; text-underline-offset: 4px; }
.zca-check a:hover, .zca-link:hover { text-decoration: underline; }
.zca-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-top: 16px; }
.zca-button {
    display: inline-flex;
    width: 100%;
    min-height: 52px;
    align-items: center;
    justify-content: center;
    gap: 9px;
    margin-top: 22px;
    border: 1px solid transparent;
    border-radius: 14px;
    background: var(--zca-accent);
    color: #fff;
    padding: 0 18px;
    font-size: 15px;
    font-weight: 850;
    cursor: pointer;
    box-shadow: 0 13px 30px -18px color-mix(in srgb, var(--zca-accent) 80%, transparent);
    transition: background-color 140ms var(--zca-ease), box-shadow 140ms var(--zca-ease), transform 120ms var(--zca-ease), opacity 120ms var(--zca-ease);
    touch-action: manipulation;
}
.zca-button:hover { background: var(--zca-accent-strong); box-shadow: 0 16px 34px -17px color-mix(in srgb, var(--zca-accent) 90%, transparent); }
.zca-button:active { transform: scale(.985); }
.zca-button:disabled { cursor: wait; opacity: .58; box-shadow: none; }
.zca-button[data-variant="secondary"] { margin-top: 14px; border-color: var(--zca-line); background: transparent; color: var(--zca-ink); box-shadow: none; }
.zca-button[data-variant="secondary"]:hover { border-color: var(--zca-accent); background: var(--zca-accent-soft); color: var(--zca-accent-strong); }
.zca-button svg { width: 19px; height: 19px; }
.zca-message { min-height: 24px; margin: 12px 0 0; color: var(--zca-muted); font-size: 13px; line-height: 1.75; }
.zca-message:not(:empty) { padding: 10px 12px; border-radius: 12px; background: var(--zca-accent-soft); color: var(--zca-accent-strong); }
.zca-message a, .zca-alert a { color: inherit; font-weight: 800; text-decoration: underline; text-underline-offset: 3px; white-space: nowrap; }
.zca-divider { display: flex; align-items: center; gap: 12px; margin: 26px 0; color: var(--zca-muted); font-size: 12px; }
.zca-divider::before, .zca-divider::after { content: ""; height: 1px; flex: 1; background: var(--zca-line); }
.zca-footer-copy { margin: 24px 0 0; color: var(--zca-muted); font-size: 14px; line-height: 1.8; text-align: center; }
.zca-unavailable { margin-top: 28px; padding: 20px; border-radius: 18px; background: var(--zca-canvas); color: var(--zca-muted); line-height: 1.9; }
.zca-options { display: grid; gap: 16px; margin-top: 28px; }
.zca-option { padding-top: 24px; border-top: 1px solid var(--zca-line); }
.zca-option:first-child { padding-top: 0; border-top: 0; }
.zca-option h2 { margin: 0 0 5px; color: var(--zca-ink); font-size: 18px; line-height: 1.5; font-weight: 900; }
.zca-option > p { margin: 0 0 16px; color: var(--zca-muted); font-size: 13px; line-height: 1.8; }
.zca-shell [hidden] { display: none !important; }
.zca-steps { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; margin: 26px 0 0; padding: 0; list-style: none; }
.zca-step { display: flex; align-items: center; gap: 10px; min-width: 0; padding: 11px 13px; border: 1px solid var(--zca-line); border-radius: 14px; color: var(--zca-muted); background: var(--zca-canvas); font-size: 13px; font-weight: 750; }
.zca-step[aria-current="step"] { border-color: color-mix(in srgb, var(--zca-accent) 50%, var(--zca-line)); background: var(--zca-accent-soft); color: var(--zca-ink); }
.zca-step-number { display: inline-flex; align-items: center; justify-content: center; flex: 0 0 30px; width: 30px; height: 30px; border-radius: 10px; background: var(--zca-surface); color: var(--zca-accent-strong); font-variant-numeric: tabular-nums; }
.zca-step[aria-current="step"] .zca-step-number { background: var(--zca-accent); color: #fff; }
.zca-recovery-step { margin-top: 22px; }
.zca-sent-note { margin: 0 0 20px; padding: 13px 15px; border: 1px solid color-mix(in srgb, var(--zca-accent) 35%, var(--zca-line)); border-radius: 14px; background: var(--zca-accent-soft); color: var(--zca-ink); font-size: 13px; line-height: 1.8; }
.zca-recovery-utilities { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 16px; margin: 8px -8px 0; }
.zca-link-button { min-height: 44px; padding: 0 8px; border: 0; border-radius: 10px; background: transparent; color: var(--zca-accent-strong); font: inherit; font-size: 13px; font-weight: 800; cursor: pointer; touch-action: manipulation; }
.zca-link-button:hover { background: var(--zca-accent-soft); }
.zca-link-button:disabled { color: var(--zca-muted); opacity: .6; cursor: wait; }
.zca-link-button:focus-visible { outline: 3px solid color-mix(in srgb, var(--zca-accent) 52%, transparent); outline-offset: 2px; }
.zca-return-code { display: block; margin: 10px auto 0; }
.zca-recovery-choice { display: grid; gap: 9px; min-width: 0; margin: 24px 0 0; padding: 0; border: 0; }
.zca-recovery-choice legend { margin-bottom: 9px; color: var(--zca-ink); font-size: 14px; font-weight: 850; }
.zca-choice { display: flex; align-items: flex-start; gap: 11px; min-height: 72px; padding: 13px 14px; border: 1px solid var(--zca-line); border-radius: 14px; background: color-mix(in srgb, var(--zca-surface) 92%, var(--zca-canvas)); cursor: pointer; transition: border-color 140ms var(--zca-ease), background-color 140ms var(--zca-ease); }
.zca-choice:has(input:checked) { border-color: var(--zca-accent); background: var(--zca-accent-soft); }
.zca-choice:focus-within { outline: 3px solid color-mix(in srgb, var(--zca-accent) 48%, transparent); outline-offset: 2px; }
.zca-choice input { flex: 0 0 auto; width: 18px; height: 18px; margin-top: 2px; accent-color: var(--zca-accent); }
.zca-choice span { display: grid; gap: 2px; min-width: 0; }
.zca-choice strong { color: var(--zca-ink); font-size: 14px; line-height: 1.5; }
.zca-choice small { color: var(--zca-muted); font-size: 12px; line-height: 1.6; }
.zca-recovery-password { margin-top: 22px; padding-top: 3px; }
.zca-honeypot { position: absolute !important; left: -9999px !important; width: 1px !important; height: 1px !important; overflow: hidden !important; opacity: 0 !important; pointer-events: none !important; }
.zca-back:focus-visible, .zca-brand:focus-visible, .zca-mobile-brand:focus-visible, .zca-link:focus-visible, .zca-password-toggle:focus-visible, .zca-button:focus-visible, .zca-check:focus-within {
    outline: 3px solid color-mix(in srgb, var(--zca-accent) 52%, transparent);
    outline-offset: 3px;
}
@media (prefers-reduced-motion: no-preference) {
    .zca-frame { animation: zca-arrive 480ms var(--zca-ease) both; }
    .zca-chart-line { animation: zca-draw 760ms 180ms var(--zca-ease) both; }
    @keyframes zca-arrive { from { opacity: 0; transform: translateY(14px) scale(.992); } to { opacity: 1; transform: none; } }
    @keyframes zca-draw { from { stroke-dashoffset: 420; } to { stroke-dashoffset: 0; } }
}
@media (max-width: 880px) {
    .zca-shell { min-height: calc(100dvh - 68px); padding: 22px 14px 40px; }
    .zca-frame { grid-template-areas: "form" "visual"; grid-template-columns: minmax(0, 1fr); border-radius: 26px; }
    .zca-card { padding: 28px 22px 32px; }
    .zca-visual { padding: 28px 24px; }
    .zca-visual .zca-brand, .zca-visual .zca-eyebrow, .zca-visual h2, .zca-visual-copy { display: none; }
    .zca-signal { margin-top: 0; padding-top: 0; border-top: 0; }
    .zca-chart { height: 72px; }
    .zca-security-note { margin-top: 12px; }
    .zca-mobile-brand { display: flex; }
}
@media (max-width: 480px) {
    .zca-shell { padding-inline: 10px; }
    .zca-back { margin-right: 4px; }
    .zca-frame { border-radius: 22px; }
    .zca-card { padding: 26px 18px 28px; }
    .zca-title { font-size: 28px; }
    .zca-row { align-items: flex-start; flex-direction: column; }
    .zca-register-optional-grid { grid-template-columns: minmax(0, 1fr); gap: 18px; }
}
@media (prefers-reduced-motion: reduce) {
    .zca-shell *, .zca-shell *::before, .zca-shell *::after { animation-duration: .01ms !important; animation-iteration-count: 1 !important; scroll-behavior: auto !important; }
}