/* ==========================================================================
   Giriş ekranı — tek ortalanmış kart, açık/koyu tema uyumlu
   ========================================================================== */

.login-screen {
    position: relative;
    min-height: 100vh;
    min-height: 100svh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 32px 20px;
    background-color: var(--surface-page);
    color: var(--text-1);
}

.login-theme-toggle {
    position: absolute;
    top: 20px;
    right: 20px;
    z-index: 3;
}

.login-layout {
    width: min(452px, 100%);
}

.login-form-panel {
    padding: clamp(26px, 5vw, 38px);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background-color: var(--surface-1);
    box-shadow: var(--shadow-3);
}

.login-form-wrap {
    width: 100%;
}

/* ---------- Marka başlığı ---------- */
.login-brand {
    display: flex;
    justify-content: center;
    margin-bottom: 22px;
}

/* Logo beyaz zeminli olduğu için koyu temada kasıtlı bir beyaz kart üzerinde durur. */
.login-brand-logo {
    width: 128px;
    height: auto;
    border-radius: 14px;
    background-color: #fff;
    border: 1px solid var(--border);
    padding: 6px;
}

/* ---------- Başlık bloğu ---------- */
.login-security-chip {
    display: inline-flex;
    align-items: center;
    gap: 7px;
    margin-bottom: 16px;
    padding: 5px 11px;
    border: 1px solid var(--border);
    border-radius: var(--radius-full);
    background-color: var(--surface-inset);
    color: var(--text-2);
    font-size: 10.5px;
    font-weight: 650;
    letter-spacing: 0.03em;
}

.login-security-chip span {
    width: 6px;
    height: 6px;
    border-radius: 50%;
    background-color: var(--success);
}

.login-eyebrow {
    margin-bottom: 9px;
    font-size: 10.5px;
    font-weight: 700;
    letter-spacing: 0.2em;
    color: var(--accent-text);
}

.login-form-panel h2 {
    font-size: clamp(21px, 4vw, 25px);
    font-weight: 700;
    line-height: 1.2;
    letter-spacing: -0.03em;
    color: var(--text-1);
}

.login-form-description {
    margin-top: 8px;
    font-size: 12.5px;
    line-height: 1.65;
    color: var(--text-2);
}

.login-alert {
    display: flex;
    align-items: flex-start;
    gap: 9px;
    margin-top: 16px;
    padding: 10px 12px;
    border: 1px solid var(--danger);
    border-radius: var(--radius-md);
    background-color: var(--danger-soft);
    color: var(--danger-text);
    font-size: 12.5px;
    line-height: 1.5;
}

.login-alert[hidden] {
    display: none;
}

.login-alert svg {
    width: 16px;
    height: 16px;
    flex-shrink: 0;
    margin-top: 1px;
}

/* ---------- Form alanları ---------- */
.login-form {
    display: grid;
    gap: 15px;
    margin-top: 20px;
}

.login-field > label,
.login-verification legend {
    display: block;
    margin-bottom: 6px;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-1);
}

.login-field-heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 6px;
}

.login-field-heading label {
    margin-bottom: 0;
}

.password-toggle {
    padding: 2px 4px;
    border-radius: var(--radius-sm);
    color: var(--accent-text);
    font-size: 11px;
    font-weight: 650;
    transition: color var(--speed) var(--ease);
}

.password-toggle:hover {
    color: var(--accent);
}

.login-input-shell {
    position: relative;
}

.login-input-icon {
    position: absolute;
    top: 50%;
    left: 13px;
    width: 16px;
    height: 16px;
    transform: translateY(-50%);
    color: var(--text-3);
    pointer-events: none;
    transition: color var(--speed) var(--ease);
}

.login-input-shell:focus-within .login-input-icon {
    color: var(--accent);
}

.login-field input,
.captcha-input {
    width: 100%;
    height: 44px;
    padding: 0 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background-color: var(--surface-1);
    color: var(--text-1);
    font-family: inherit;
    font-size: 13.5px;
    outline: none;
    transition: border-color var(--speed) var(--ease), box-shadow var(--speed) var(--ease);
}

.login-input-shell input {
    padding-left: 40px;
}

.login-field input::placeholder,
.captcha-input::placeholder {
    color: var(--text-3);
}

.login-field input:hover,
.captcha-input:hover {
    border-color: var(--border-strong);
}

.login-field input:focus,
.captcha-input:focus {
    border-color: var(--accent);
    box-shadow: var(--shadow-focus);
}

.login-hint {
    margin-top: 6px;
    font-size: 11px;
    font-weight: 600;
    color: var(--warning-text);
}

.login-hint[hidden] {
    display: none;
}

/* ---------- Güvenlik kodu ---------- */
.login-verification {
    min-width: 0;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background-color: var(--surface-inset);
}

.login-verification legend {
    padding: 0 6px;
    margin-bottom: 0;
}

.login-verification > p {
    margin: 0 0 10px;
    font-size: 11px;
    line-height: 1.5;
    color: var(--text-3);
}

.captcha-row {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    gap: 8px;
    margin-bottom: 8px;
}

/* Kod sunucuda üretilip SVG olarak gelir; istemci kodu hiç görmez. */
.captcha-image {
    display: block;
    width: 100%;
    height: 42px;
    border: 1px solid var(--accent-border);
    border-radius: var(--radius-md);
    background-color: var(--accent-soft);
    color: var(--accent-text);
    object-fit: cover;
    user-select: none;
    -webkit-user-drag: none;
}

.captcha-image.is-refreshing {
    animation: captcha-in 200ms var(--ease);
}

.captcha-refresh {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    height: 42px;
    padding: 0 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    background-color: var(--surface-1);
    color: var(--text-2);
    font-family: inherit;
    font-size: 11px;
    font-weight: 650;
    transition: border-color var(--speed) var(--ease), color var(--speed) var(--ease),
        background-color var(--speed) var(--ease);
}

.captcha-refresh:hover {
    border-color: var(--accent-border);
    background-color: var(--accent-soft);
    color: var(--accent-text);
}

.captcha-refresh span:first-child {
    font-size: 15px;
    line-height: 1;
}

.captcha-input {
    height: 42px;
    text-transform: uppercase;
    letter-spacing: 0.16em;
}

/* ---------- Gönder ---------- */
.login-submit {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 46px;
    padding: 0 46px;
    border: none;
    border-radius: var(--radius-md);
    background-color: var(--accent);
    color: var(--text-on-accent);
    font-family: inherit;
    font-size: 13.5px;
    font-weight: 650;
    transition: background-color var(--speed) var(--ease);
}

.login-submit:hover:not(:disabled) {
    background-color: var(--accent-hover);
}

.login-submit:disabled {
    cursor: wait;
    opacity: 0.7;
}

.login-submit-arrow {
    position: absolute;
    right: 18px;
    font-size: 17px;
    transition: transform var(--speed) var(--ease);
}

.login-submit:hover:not(:disabled) .login-submit-arrow {
    transform: translateX(3px);
}

.login-help {
    margin-top: 16px;
    font-size: 11px;
    line-height: 1.6;
    text-align: center;
    color: var(--text-3);
}

/* Panel içi bağlantı düğmeleri (şifremi unuttum, girişe dön) */
.login-link {
    display: block;
    width: 100%;
    padding: 4px;
    margin-top: -4px;
    color: var(--accent-text);
    font-family: inherit;
    font-size: 12px;
    font-weight: 600;
    text-align: center;
    border-radius: var(--radius-sm);
    transition: color var(--speed) var(--ease);
}

.login-link:hover {
    color: var(--accent);
}

/* Başarı / bilgilendirme kutusu */
.login-notice {
    margin-top: 16px;
    padding: 10px 12px;
    border: 1px solid var(--success);
    border-radius: var(--radius-md);
    background-color: var(--success-soft);
    color: var(--success-text);
    font-size: 12.5px;
    line-height: 1.55;
}

.login-notice[hidden] {
    display: none;
}

@keyframes captcha-in {
    from { opacity: 0.4; transform: translateY(-2px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---------- Duyarlı düzen ---------- */
@media (max-width: 520px) {
    .login-screen {
        padding: 20px 14px;
    }

    .login-form-panel {
        padding: 22px 18px 24px;
    }

    /* Dar ekranda yenile düğmesi yalnızca simgeyle gösterilir. */
    .captcha-refresh-text {
        display: none;
    }
}