/* =========================================================
   NSK LOGIN PAGE — NhathuocSucKhoeXanh
   Design System: HealthGreen
   ========================================================= */

/* ─── Page Layout ─── */
.nsk-theme .login-page .page-title { display: none; }

.nsk-login {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: 60vh;
    padding: var(--nsk-space-6) 0;
}

/* ─── Login Card ─── */
.nsk-login__card {
    width: 100%;
    max-width: 460px;
    background: var(--nsk-color-bg-surface);
    border: 1px solid var(--nsk-color-border);
    border-radius: var(--nsk-radius-xl);
    padding: var(--nsk-space-10) var(--nsk-space-8);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.06);
}

/* ─── Header ─── */
.nsk-login__header {
    text-align: center;
    margin-bottom: var(--nsk-space-8);
}

.nsk-login__icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--nsk-color-primary), #22c55e);
    color: #fff;
    margin-bottom: var(--nsk-space-4);
    box-shadow: 0 4px 16px rgba(23, 163, 74, 0.25);
}

.nsk-login__title {
    font-size: var(--nsk-font-size-2xl);
    font-weight: var(--nsk-font-weight-bold);
    color: var(--nsk-color-text-primary);
    margin-bottom: var(--nsk-space-2);
}

.nsk-login__subtitle {
    font-size: var(--nsk-font-size-sm);
    color: var(--nsk-color-text-muted);
}

/* ─── Form ─── */
.nsk-login__form {
    display: flex;
    flex-direction: column;
    gap: var(--nsk-space-5);
}

.nsk-login__field {
    display: flex;
    flex-direction: column;
    gap: var(--nsk-space-2);
}

.nsk-login__label {
    font-size: var(--nsk-font-size-sm);
    font-weight: var(--nsk-font-weight-medium);
    color: var(--nsk-color-text-primary);
}

.nsk-login__input-wrap {
    position: relative;
    display: flex;
    align-items: center;
}

.nsk-login__input-icon {
    position: absolute;
    left: 14px;
    color: var(--nsk-color-text-muted);
    pointer-events: none;
    flex-shrink: 0;
}

.nsk-login__input {
    width: 100%;
    height: 48px;
    padding: 0 48px 0 44px;
    border: 1.5px solid var(--nsk-color-border);
    border-radius: var(--nsk-radius-md);
    font-size: var(--nsk-font-size-base);
    color: var(--nsk-color-text-primary);
    background: var(--nsk-color-bg-body);
    transition: var(--nsk-transition-fast);
}

.nsk-login__input::placeholder {
    color: transparent;
}

.nsk-login__input:focus {
    outline: none;
    border-color: var(--nsk-color-primary);
    box-shadow: 0 0 0 3px rgba(23, 163, 74, 0.12);
    background: #fff;
}

/* ─── Floating Label ─── */
.nsk-login__float-label {
    position: absolute;
    left: 42px;
    top: 50%;
    transform: translateY(-50%);
    font-size: var(--nsk-font-size-base);
    color: var(--nsk-color-text-muted);
    pointer-events: none;
    transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1);
    background: transparent;
    padding: 0 4px;
    line-height: 1;
    white-space: nowrap;
    max-width: calc(100% - 56px);
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Float up: khi focus hoặc có giá trị */
.nsk-login__input:focus ~ .nsk-login__float-label,
.nsk-login__input.has-value ~ .nsk-login__float-label {
    top: 0;
    transform: translateY(-50%);
    font-size: var(--nsk-font-size-xs);
    font-weight: var(--nsk-font-weight-medium);
    color: var(--nsk-color-primary);
    background: var(--nsk-color-bg-surface);
    left: 38px;
}

/* Khi chỉ has-value mà không focus → màu muted */
.nsk-login__input.has-value:not(:focus) ~ .nsk-login__float-label {
    color: var(--nsk-color-text-muted);
}

/* Select elements: luôn floating vì luôn có giá trị */
select.nsk-login__input ~ .nsk-login__float-label {
    top: 0;
    transform: translateY(-50%);
    font-size: var(--nsk-font-size-xs);
    font-weight: var(--nsk-font-weight-medium);
    color: var(--nsk-color-text-muted);
    background: var(--nsk-color-bg-surface);
    left: 38px;
}

select.nsk-login__input:focus ~ .nsk-login__float-label {
    color: var(--nsk-color-primary);
}

.nsk-login__input:hover:not(:focus) {
    border-color: var(--nsk-color-text-muted);
}

/* Password eye toggle */
.nsk-login__eye {
    position: absolute;
    right: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border: none;
    background: none;
    cursor: pointer;
    color: var(--nsk-color-text-muted);
    border-radius: var(--nsk-radius-sm);
    transition: var(--nsk-transition-fast);
}

.nsk-login__eye:hover {
    color: var(--nsk-color-primary);
    background: var(--nsk-color-bg-subtle);
}

/* Validation */
.nsk-login__validation {
    font-size: var(--nsk-font-size-xs);
    color: #ef4444;
}

.nsk-login__error:not(:empty) {
    background: #fef2f2;
    border: 1px solid #fecaca;
    color: #dc2626;
    padding: var(--nsk-space-3) var(--nsk-space-4);
    border-radius: var(--nsk-radius-sm);
    font-size: var(--nsk-font-size-sm);
    text-align: center;
}

/* ─── Options Row ─── */
.nsk-login__options {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nsk-login__remember {
    display: flex;
    align-items: center;
    gap: var(--nsk-space-2);
    font-size: var(--nsk-font-size-sm);
    color: var(--nsk-color-text-secondary);
    cursor: pointer;
}

.nsk-login__remember input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--nsk-color-primary);
    cursor: pointer;
}

.nsk-login__forgot {
    font-size: var(--nsk-font-size-sm);
    color: var(--nsk-color-primary);
    font-weight: var(--nsk-font-weight-medium);
    text-decoration: none;
    transition: var(--nsk-transition-fast);
}

.nsk-login__forgot:hover {
    color: var(--nsk-color-primary-hover);
    text-decoration: underline;
}

/* ─── Submit Button ─── */
.nsk-login__submit {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--nsk-space-2);
    width: 100%;
    height: 50px;
    background: linear-gradient(135deg, var(--nsk-color-primary), #22c55e);
    color: #fff;
    border: none;
    border-radius: var(--nsk-radius-md);
    font-size: var(--nsk-font-size-base);
    font-weight: var(--nsk-font-weight-bold);
    cursor: pointer;
    transition: var(--nsk-transition-normal);
    box-shadow: 0 4px 14px rgba(23, 163, 74, 0.3);
    margin-top: var(--nsk-space-2);
}

.nsk-login__submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(23, 163, 74, 0.4);
}

.nsk-login__submit:active {
    transform: translateY(0);
    box-shadow: 0 2px 8px rgba(23, 163, 74, 0.3);
}

/* ─── External Auth ─── */
.nsk-login__external:not(:empty) {
    margin-top: var(--nsk-space-6);
    padding-top: var(--nsk-space-6);
    border-top: 1px solid var(--nsk-color-border);
    text-align: center;
}

/* ─── Register / Guest ─── */
.nsk-login__register {
    margin-top: var(--nsk-space-6);
    padding-top: var(--nsk-space-6);
    border-top: 1px solid var(--nsk-color-border);
    text-align: center;
}

.nsk-login__register-text {
    font-size: var(--nsk-font-size-sm);
    color: var(--nsk-color-text-secondary);
}

.nsk-login__register-link {
    color: var(--nsk-color-primary);
    font-weight: var(--nsk-font-weight-bold);
    text-decoration: none;
    transition: var(--nsk-transition-fast);
}

.nsk-login__register-link:hover {
    text-decoration: underline;
    color: var(--nsk-color-primary-hover);
}

.nsk-login__guest-btn {
    display: block;
    width: 100%;
    height: 44px;
    margin-bottom: var(--nsk-space-4);
    background: var(--nsk-color-bg-surface);
    color: var(--nsk-color-primary);
    border: 2px solid var(--nsk-color-primary);
    border-radius: var(--nsk-radius-md);
    font-size: var(--nsk-font-size-sm);
    font-weight: var(--nsk-font-weight-bold);
    cursor: pointer;
    transition: var(--nsk-transition-fast);
}

.nsk-login__guest-btn:hover {
    background: var(--nsk-color-primary);
    color: #fff;
}

/* Captcha */
.nsk-login__captcha {
    display: flex;
    justify-content: center;
}

/* ─── Register Card Wide ─── */
.nsk-login__card--wide {
    max-width: 560px;
}

.nsk-login__input--no-icon {
    padding-left: 16px;
}

/* Register form */
.nsk-register__form {
    display: flex;
    flex-direction: column;
    gap: var(--nsk-space-6);
}

.nsk-register__section {
    border: 1px solid var(--nsk-color-border);
    border-radius: var(--nsk-radius-md);
    padding: var(--nsk-space-5);
    display: flex;
    flex-direction: column;
    gap: var(--nsk-space-4);
}

.nsk-register__legend {
    display: flex;
    align-items: center;
    gap: var(--nsk-space-2);
    font-size: var(--nsk-font-size-sm);
    font-weight: var(--nsk-font-weight-bold);
    color: var(--nsk-color-primary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 0 var(--nsk-space-2);
}

.nsk-register__row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--nsk-space-4);
}

/* Gender radio */
.nsk-register__gender {
    display: flex;
    gap: var(--nsk-space-4);
}

.nsk-register__radio {
    display: flex;
    align-items: center;
    gap: var(--nsk-space-2);
    font-size: var(--nsk-font-size-sm);
    color: var(--nsk-color-text-secondary);
    cursor: pointer;
}

.nsk-register__radio input[type="radio"] {
    accent-color: var(--nsk-color-primary);
    width: 16px;
    height: 16px;
}

/* Checkbox style */
.nsk-register__checkbox {
    display: flex;
    align-items: center;
    gap: var(--nsk-space-2);
    font-size: var(--nsk-font-size-sm);
    color: var(--nsk-color-text-secondary);
    cursor: pointer;
    padding: var(--nsk-space-2) 0;
}

.nsk-register__checkbox input[type="checkbox"] {
    width: 16px;
    height: 16px;
    accent-color: var(--nsk-color-primary);
    cursor: pointer;
    flex-shrink: 0;
}

.nsk-register__checkbox--highlight {
    background: var(--nsk-color-bg-subtle);
    padding: var(--nsk-space-3) var(--nsk-space-4);
    border-radius: var(--nsk-radius-sm);
    border: 1px solid var(--nsk-color-border);
}

/* Date of birth */
.nsk-register__dob select {
    height: 44px;
    border: 1.5px solid var(--nsk-color-border);
    border-radius: var(--nsk-radius-sm);
    padding: 0 var(--nsk-space-3);
    font-size: var(--nsk-font-size-sm);
    background: var(--nsk-color-bg-body);
    color: var(--nsk-color-text-primary);
}

.nsk-register__dob select:focus {
    outline: none;
    border-color: var(--nsk-color-primary);
    box-shadow: 0 0 0 3px rgba(23, 163, 74, 0.12);
}



/* Agreement text block */
.nsk-register__agreement-text {
    max-height: 300px;
    overflow-y: auto;
    padding: var(--nsk-space-4);
    border: 1px solid var(--nsk-color-border);
    border-radius: var(--nsk-radius-md);
    font-size: var(--nsk-font-size-sm);
    line-height: 1.6;
    color: var(--nsk-color-text-secondary);
    margin-bottom: var(--nsk-space-4);
}

/* Success icon */
.nsk-login__icon--success {
    background: linear-gradient(135deg, #22c55e, #16a34a);
}

/* Hide default page title */
.nsk-theme .registration-page .page-title,
.nsk-theme .registration-result-page .page-title,
.nsk-theme .user-agreement-page .page-title {
    display: none;
}

/* ─── Readonly / Auto-filled Input ─── */
.nsk-login__input--readonly {
    background: var(--nsk-color-bg-subtle);
    color: var(--nsk-color-text-muted);
    cursor: not-allowed;
    border-style: dashed;
}

.nsk-login__input--readonly:focus {
    box-shadow: none;
    border-color: var(--nsk-color-border);
    background: var(--nsk-color-bg-subtle);
}

/* ─── Hint / Helper Text ─── */
.nsk-login__hint {
    font-size: var(--nsk-font-size-xs);
    color: var(--nsk-color-text-muted);
    font-style: italic;
    margin-top: -2px;
}

/* ─── Select with Icon ─── */
.nsk-register__section select.nsk-login__input {
    height: 48px;
    appearance: auto;
    padding-left: 44px;
}

/* ─── RESPONSIVE ─── */
@media (max-width: 575px) {
    .nsk-login__card {
        padding: var(--nsk-space-6) var(--nsk-space-5);
        border-radius: var(--nsk-radius-md);
        box-shadow: none;
        border: none;
    }

    .nsk-login__icon {
        width: 56px;
        height: 56px;
    }

    .nsk-login__title {
        font-size: var(--nsk-font-size-xl);
    }

    .nsk-login__input {
        height: 44px;
    }

    .nsk-login__submit {
        height: 46px;
    }

    .nsk-register__row {
        grid-template-columns: 1fr;
    }

    .nsk-register__section {
        padding: var(--nsk-space-4);
    }

    .nsk-login__card--wide {
        max-width: 100%;
    }
}