:root {
    --primary-color: #B5E941;
    --button-font-color: #1D4B00;
    --font-default-color: #0C0C0B;
    --input-border-color: #95958E;
    --error-color: #B30C0C;
    --page-background-color: #ffffff;
    --font-family: "Helvetica Neue", Helvetica, Arial, sans-serif;
    --button-height: 44px;
    --input-height: 44px;
    --font-bold-weight: 600;
    --knz-header-height: 50px;
    --widget-background-color: #ffffff;
    --link-color: #326916;
    --base-focus-color: #0C0C0B;
    --spacing: 0.5rem;
    --spacing-2: calc(var(--spacing) * 2);
    --transition-speed: 0.15s;
    --transition-easing: ease-in-out;
    --font-light-color: #77756F;
    --border-radius-outer: 16px;
    --shadow-component-outer: 0 12px 40px rgba(0, 0, 0, 0.12);
    --input-border-radius: 8px;
    --border-radius-form-elements: 3px;
    --input-label-top: calc(var(--input-height) / 2);
    --input-label-top-focus: -2px;
    --input-label-transform: translateY(-50%);
    --input-label-transform-focus: scale(0.88) translateX(calc(-1 * var(--spacing))) translateY(-58%);
}

* {
    box-sizing: border-box;
}

html, body {
    margin: 0;
    padding: 0;
    font-family: var(--font-family);
    background-color: var(--page-background-color);
    color: var(--font-default-color);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px 12px;
}

main {
    width: 100%;
    max-width: 500px;
    margin-top: calc(var(--knz-header-height) + 20px);
}

section {
    width: 100%;
    background-color: var(--widget-background-color);
    padding: 32px 24px;
    border-radius: var(--border-radius-outer);
    box-shadow: var(--shadow-component-outer);
}

.login-header {
    text-align: center;
    margin-bottom: 32px;
}

#prompt-logo-center {
    display: block;
    margin: 0 auto 24px;
    height: 52px;
    width: auto;
}

.login-header h1 {
    margin: 0 0 12px 0;
    font-size: 1.125rem;
    font-weight: var(--font-bold-weight);
    color: var(--font-default-color);
    line-height: 1.3;
}

.login-header p {
    margin: 0;
    font-size: 15px;
    color: var(--font-default-color);
    line-height: 1.5;
}

form {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.input-wrapper {
    position: relative;
    display: flex;
    flex-direction: column;
    width: 100%;
}

.input-box {
    position: relative;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    border-radius: var(--input-border-radius);
    background-color: var(--widget-background-color);
    transition: box-shadow var(--transition-speed) var(--transition-easing),
                border-color var(--transition-speed) var(--transition-easing);
}

.input-box:focus-within {
    outline: 2px solid var(--base-focus-color);
    outline-offset: -4px;
}

.input-box label {
    position: absolute;
    left: var(--spacing-2);
    top: var(--input-label-top);
    transform: var(--input-label-transform);
    transform-origin: 0;
    z-index: 1;
    padding: 1px 6px;
    background-color: var(--widget-background-color);
    color: var(--font-light-color);
    font-size: 16px;
    font-weight: 400;
    max-width: 90%;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    pointer-events: none;
    transition: transform var(--transition-speed) var(--transition-easing),
                top var(--transition-speed) var(--transition-easing),
                padding var(--transition-speed) var(--transition-easing),
                color var(--transition-speed) var(--transition-easing);
}

.input-box:focus-within label,
.input-box.has-value label {
    top: var(--input-label-top-focus);
    transform: var(--input-label-transform-focus);
    overflow: visible;
    white-space: normal;
    padding: 1px 0;
}

.input-box:focus-within label {
    color: var(--base-focus-color);
}

.required {
    margin-left: 4px;
}

.input {
    width: 100%;
    padding: 12px 16px;
    height: var(--input-height);
    min-height: var(--input-height);
    border: 1px solid var(--input-border-color);
    border-radius: var(--input-border-radius);
    font-size: 16px;
    font-family: inherit;
    color: var(--font-default-color);
    background-color: var(--widget-background-color);
    transition: border-color var(--transition-speed) var(--transition-easing),
                box-shadow var(--transition-speed) var(--transition-easing);
}

.input:focus {
    outline: none;
}

.input::placeholder {
    color: var(--font-light-color);
}

.input--with-toggle {
    padding-right: 44px;
}

.button-icon {
    position: absolute;
    right: 1px;
    top: 1px;
    bottom: 1px;
    width: 44px;
    min-height: calc(var(--input-height) - 2px);
    padding: 0;
    background: none;
    border: none;
    border-top-right-radius: var(--border-radius-form-elements);
    border-bottom-right-radius: var(--border-radius-form-elements);
    color: var(--font-default-color);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background-color 0.2s;
}

.button-icon:hover {
    background-color: rgba(0, 0, 0, 0.05);
}

.button-icon:focus-visible {
    outline: 2px solid var(--base-focus-color);
    outline-offset: -4px;
    border-radius: var(--input-border-radius);
}

.button-icon svg {
    width: 20px;
    height: 20px;
    display: block;
}

.button-primary {
    width: 100%;
    padding: 0;
    height: var(--button-height);
    min-height: var(--button-height);
    background-color: var(--primary-color);
    color: var(--button-font-color);
    border: none;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: var(--font-bold-weight);
    font-family: inherit;
    cursor: pointer;
    transition: box-shadow 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.button-primary:hover {
    box-shadow: inset 0 0 0 150px rgba(0, 0, 0, 0.1);
}

.button-primary:active {
    box-shadow: inset 0 0 0 150px rgba(0, 0, 0, 0.15);
}

.button-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.email-info {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    height: var(--input-height);
    min-height: var(--input-height);
    padding: 0 var(--spacing-2);
    border: 1px solid var(--input-border-color);
    border-radius: var(--input-border-radius);
    margin-bottom: 12px;
    font-size: 16px;
    color: var(--font-default-color);
}

.email-info #logged-email,
.email-info #mfa-email {
    font-weight: 400;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.edit-link {
    display: inline-block;
    flex-shrink: 0;
    color: var(--link-color);
    text-decoration: underline;
    font-size: 0.875rem;
    font-weight: var(--font-bold-weight);
}

.edit-link:hover {
    opacity: 0.8;
}

.forgot-password-link {
    text-align: left;
    display: inline-block;
    color: var(--link-color);
    text-decoration: underline;
    font-size: 0.875rem;
    font-weight: var(--font-bold-weight);
    margin-bottom: 8px;
}

.forgot-password-link:hover {
    opacity: 0.8;
}

.error-message {
    color: var(--error-color);
    font-size: 13px;
    line-height: 1.4;
}

.sf-hidden {
    display: none !important;
}

#loading-stub {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 20px;
    min-height: 200px;
}

#loading-stub.sf-hidden {
    display: none !important;
}

#loading-stub p {
    font-size: 16px;
    color: var(--font-default-color);
    margin: 0;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 3px solid rgba(181, 233, 65, 0.2);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

.shake-error {
    animation: shake 0.5s ease-in-out;
}

.signup-prompt {
    text-align: left;
    margin-top: 24px;
    font-size: 0.875rem;
    color: var(--font-default-color);
}

.signup-link {
    color: var(--link-color);
    text-decoration: underline;
    font-weight: var(--font-bold-weight);
}

.signup-link:hover {
    opacity: 0.8;
}

/* MFA stage header (replaces the generic welcome header on this screen) */
.stage-header {
    text-align: center;
    margin-bottom: 24px;
}

.stage-illustration {
    display: block;
    margin: 0 auto 24px;
    height: 120px;
    max-height: 120px;
    width: auto;
}

.stage-title {
    margin: 0 0 8px 0;
    font-size: 1.125rem;
    font-weight: var(--font-bold-weight);
    color: var(--title-font-color, var(--font-default-color));
    line-height: 1.3;
}

.stage-desc {
    margin: 0;
    font-size: 0.875rem;
    color: var(--font-default-color);
    line-height: 1.5;
}

/* Resend row below the form */
.resend-row {
    margin: 24px 0 0 0;
    font-size: 0.875rem;
    color: var(--font-default-color);
    line-height: 1.5;
}

.resend-link {
    color: var(--link-color);
    text-decoration: underline;
    font-weight: var(--font-bold-weight);
}

.resend-link:hover {
    opacity: 0.8;
}

/* On the MFA and loading screens the generic welcome header and the
   signup prompt are not shown — each screen carries its own context. */
section:has(#stage-mfa-intro:not(.sf-hidden)) .login-header,
section:has(#stage-mfa:not(.sf-hidden)) .login-header,
section:has(#loading-stub:not(.sf-hidden)) .login-header,
section:has(#stage-mfa-intro:not(.sf-hidden)) .signup-prompt,
section:has(#stage-mfa:not(.sf-hidden)) .signup-prompt,
section:has(#loading-stub:not(.sf-hidden)) .signup-prompt {
    display: none;
}

.knz-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    display: block;
    text-align: center;
    height: var(--knz-header-height);
    width: 100%;
    padding: 12px 0;
    background-color: var(--widget-background-color);
    border-bottom: 1px solid #dddbd5;
    z-index: 999;
}

.knz-header__back {
    position: absolute;
    left: 0;
    margin-left: 12px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    cursor: pointer;
    background: none;
    border: none;
    color: var(--link-color);
    padding: 0;
}

.knz-header__back:hover {
    opacity: 0.8;
}

.knz-header__back svg {
    width: 100%;
    height: 100%;
    display: block;
}

.knz-header__logo-link {
    display: none;
    outline: none;
    text-decoration: none;
}

.knz-header__logo-img {
    height: 48px;
    width: auto;
}

.knz-header__help-link {
    position: absolute;
    right: 0;
    margin-right: 12px;
    color: var(--link-color);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
}

.knz-header__help-link:hover {
    opacity: 0.8;
}

/* Desktop (min-width: 601px) */
@media (min-width: 601px) {
    :root {
        --knz-header-height: 72px;
    }

    body {
        padding: 20px;
    }

    section {
        padding: 40px 32px;
    }

    .login-header {
        margin-bottom: 40px;
    }

    .login-header h1 {
        font-size: 1.125rem;
    }

    .knz-header {
        padding: 12px 0;
    }

    .knz-header__logo-link {
        display: inline-block;
    }

    #prompt-logo-center {
        display: none;
    }

    .knz-header__help-link {
        margin-top: 12px;
    }

    .knz-header__back {
        margin-top: 12px;
    }
}

/* Mobile (max-width: 480px) */
@media (max-width: 480px) {
    body {
        padding: 12px;
    }

    main {
        margin-top: calc(var(--knz-header-height) + 12px);
    }

    section {
        padding: 24px 16px;
    }

    .login-header {
        margin-bottom: 24px;
    }

    .login-header h1 {
        font-size: 1.125rem;
        margin-bottom: 8px;
    }

    .login-header p {
        font-size: 14px;
    }

    form {
        gap: 12px;
    }

    .button-primary {
        height: 44px;
    }
}