:root {
    --color-bg: #eef2f6;
    --color-surface: #ffffff;
    --color-text: #1d2733;
    --color-muted: #667085;
    --color-border: #d7dee8;
    --color-border-strong: #b8c3d3;
    --color-primary: #0f766e;
    --color-primary-dark: #115e59;
    --color-primary-soft: #e6f4f2;
    --color-info: #285e9f;
    --color-info-soft: #edf5ff;
    --color-danger: #b42318;
    --color-danger-soft: #fff1f0;
    --shadow-panel: 0 22px 60px rgba(29, 39, 51, 0.14);
    --shadow-button: 0 10px 20px rgba(15, 118, 110, 0.18);
}

@keyframes panel-enter {
    from {
        opacity: 0;
        transform: translateY(16px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes field-enter {
    from {
        opacity: 0;
        transform: translateY(8px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    color: var(--color-text);
    background:
        linear-gradient(180deg, #f8fafc 0%, var(--color-bg) 46%, #e8edf4 100%);
    font-family: Arial, Helvetica, sans-serif;
    line-height: 1.5;
}

a {
    color: inherit;
}

.topbar {
    background: rgba(255, 255, 255, 0.92);
    border-bottom: 1px solid var(--color-border);
    box-shadow: 0 1px 0 rgba(29, 39, 51, 0.03);
}

.topbar__inner {
    width: min(1180px, calc(100% - 32px));
    min-height: 76px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
}

.brand {
    display: inline-flex;
    align-items: center;
    gap: 14px;
    text-decoration: none;
    font-weight: 700;
}

.brand__mark {
    display: inline-grid;
    min-width: 42px;
    height: 42px;
    padding: 0 10px;
    place-items: center;
    color: #ffffff;
    background: linear-gradient(135deg, var(--color-primary), #285e9f);
    border-radius: 8px;
    font-size: 14px;
}

.brand__name {
    font-size: 18px;
}

.topbar__nav {
    display: flex;
    align-items: center;
    gap: 6px;
}

.topbar__link {
    padding: 9px 12px;
    color: var(--color-muted);
    border-radius: 8px;
    text-decoration: none;
    font-size: 14px;
}

.topbar__link:hover,
.topbar__link:focus {
    color: var(--color-text);
    background: var(--color-primary-soft);
}

.page {
    width: min(1180px, calc(100% - 40px));
    margin: 0 auto;
    padding: 64px 0;
}

.login-panel {
    display: grid;
    min-height: calc(100vh - 204px);
    align-items: center;
    justify-items: center;
}

.login-panel__content {
    width: min(100%, 468px);
    padding: 38px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    box-shadow: var(--shadow-panel);
    animation: panel-enter 0.34s ease-out both;
}

.login-panel__label {
    margin: 0 0 12px;
    color: var(--color-primary);
    font-size: 13px;
    font-weight: 700;
    text-transform: uppercase;
}

.login-panel__title {
    margin: 0 0 4px;
    font-size: 32px;
    line-height: 1.2;
}

.login-panel__text {
    margin: 14px 0 26px;
    color: var(--color-muted);
    line-height: 1.5;
}

.login-form {
    display: grid;
    gap: 20px;
}

.login-instruction {
    margin: 0 0 24px;
    padding: 16px 18px;
    background: var(--color-info-soft);
    border: 1px solid var(--color-border);
    border-radius: 8px;
    animation: field-enter 0.28s ease-out both;
}

.login-instruction__summary {
    color: var(--color-info);
    cursor: pointer;
    font-weight: 700;
}

.login-instruction__list {
    margin: 14px 0 0;
    padding-left: 20px;
    color: var(--color-muted);
    font-size: 14px;
    line-height: 1.5;
}

.login-instruction__list li+li {
    margin-top: 6px;
}

.login-instruction__button {
    display: inline-grid;
    min-height: 40px;
    margin-top: 14px;
    padding: 0 16px;
    place-items: center;
    color: #ffffff;
    background: var(--color-info);
    border: 1px solid var(--color-info);
    border-radius: 8px;
    font-size: 14px;
    font-weight: 700;
    text-decoration: none;
    transition: background 0.16s ease, border-color 0.16s ease, transform 0.16s ease;
}

.login-instruction__button:hover,
.login-instruction__button:focus {
    background: #1d4f8f;
    border-color: #1d4f8f;
    transform: translateY(-1px);
}

.login-instruction__link {
    color: var(--color-primary);
    font-weight: 700;
    text-decoration: none;
}

.login-instruction__link:hover,
.login-instruction__link:focus {
    color: var(--color-primary-dark);
    text-decoration: underline;
}

.code-dialog {
    display: grid;
    grid-template-columns: 44px 1fr;
    gap: 16px;
    align-items: center;
    padding: 18px;
    background: var(--color-primary-soft);
    border: 1px solid rgba(15, 118, 110, 0.22);
    border-radius: 8px;
}

.code-dialog__icon {
    display: grid;
    width: 44px;
    height: 44px;
    place-items: center;
    color: #ffffff;
    background: var(--color-primary);
    border-radius: 8px;
    font-size: 20px;
    font-weight: 700;
}

.code-dialog__title {
    margin: 0;
    font-size: 18px;
    line-height: 1.25;
}

.code-dialog__text {
    margin: 4px 0 0;
    color: var(--color-muted);
    font-size: 14px;
    line-height: 1.45;
}

.form-field {
    display: grid;
    gap: 9px;
    animation: field-enter 0.28s ease-out both;
}

.login-form .form-field:nth-of-type(2) {
    animation-delay: 0.04s;
}

.login-form .form-field:nth-of-type(3) {
    animation-delay: 0.08s;
}

.form-field__label {
    font-size: 14px;
    font-weight: 700;
}

.form-field__input {
    width: 100%;
    min-height: 48px;
    padding: 0 15px;
    color: var(--color-text);
    background: #ffffff;
    border: 1px solid var(--color-border);
    border-radius: 8px;
    font: inherit;
}

.form-field__input:focus {
    border-color: var(--color-primary);
    outline: 3px solid rgba(20, 108, 99, 0.14);
}

.form-field__input.is-invalid {
    border-color: var(--color-danger);
    background: var(--color-danger-soft);
    outline-color: rgba(180, 35, 24, 0.12);
}

.phone-input {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
}

.phone-input__prefix {
    display: grid;
    min-height: 48px;
    padding: 0 15px;
    place-items: center;
    color: var(--color-text);
    background: #f4f7fa;
    border: 1px solid var(--color-border);
    border-right: 0;
    border-radius: 8px 0 0 8px;
    font-weight: 700;
}

.phone-input__field {
    border-radius: 0 8px 8px 0;
}

.captcha-box__row {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
}

.captcha-box__question {
    display: grid;
    min-height: 48px;
    padding: 0 15px;
    place-items: center;
    color: var(--color-text);
    background: #f4f7fa;
    border: 1px solid var(--color-border);
    border-right: 0;
    border-radius: 8px 0 0 8px;
    font-weight: 700;
    white-space: nowrap;
}

.captcha-box__input {
    border-radius: 0 8px 8px 0;
}

.login-form__row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    font-size: 14px;
}

.remember {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--color-muted);
}

.login-form__link {
    color: var(--color-info);
    font-weight: 700;
    text-decoration: none;
}

.login-form__link:hover,
.login-form__link:focus {
    color: #1d4f8f;
    text-decoration: underline;
}

.form-message {
    display: none;
    margin: 0;
    padding: 12px 14px;
    color: var(--color-danger);
    background: var(--color-danger-soft);
    border: 1px solid rgba(180, 35, 24, 0.18);
    border-radius: 8px;
    font-size: 14px;
}

.form-message--success {
    color: var(--color-primary);
    background: var(--color-primary-soft);
    border-color: rgba(15, 118, 110, 0.18);
}

.form-message.is-visible {
    display: block;
    animation: field-enter 0.2s ease-out both;
}

.button {
    display: inline-grid;
    place-items: center;
    min-height: 48px;
    padding: 0 22px;
    color: #ffffff;
    background: var(--color-primary);
    border: 1px solid var(--color-primary);
    border-radius: 8px;
    cursor: pointer;
    font: inherit;
    font-weight: 700;
    text-align: center;
    text-decoration: none;
    box-shadow: var(--shadow-button);
    transition: background 0.16s ease, border-color 0.16s ease, box-shadow 0.16s ease, transform 0.16s ease;
}

.button:hover,
.button:focus {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    box-shadow: 0 12px 24px rgba(17, 94, 89, 0.24);
    transform: translateY(-1px);
}

.button:active {
    box-shadow: 0 6px 14px rgba(17, 94, 89, 0.2);
    transform: translateY(0);
}

.button--secondary {
    width: 100%;
    color: var(--color-info);
    background: #ffffff;
    border: 1px solid var(--color-border-strong);
    box-shadow: none;
}

.button--secondary:hover,
.button--secondary:focus {
    color: var(--color-info);
    background: var(--color-info-soft);
    border-color: rgba(40, 94, 159, 0.35);
    box-shadow: 0 8px 18px rgba(40, 94, 159, 0.12);
}

.button--link {
    width: fit-content;
    color: var(--color-primary);
    background: transparent;
    border-color: transparent;
    box-shadow: none;
    padding-inline: 0;
}

.button--link:hover,
.button--link:focus {
    color: var(--color-primary-dark);
    background: transparent;
    border-color: transparent;
    box-shadow: none;
    text-decoration: underline;
    transform: none;
}

.resend-form {
    margin-top: 16px;
    animation: field-enter 0.28s ease-out both;
}

@media (prefers-reduced-motion: reduce) {

    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        scroll-behavior: auto !important;
        transition-duration: 0.01ms !important;
    }
}

@media (max-width: 720px) {
    .topbar__inner {
        min-height: auto;
        padding: 16px 0;
        align-items: flex-start;
        flex-direction: column;
    }

    .topbar__nav {
        width: 100%;
        overflow-x: auto;
        padding-bottom: 2px;
    }

    .page {
        width: min(100% - 28px, 1180px);
        padding: 34px 0;
    }

    .login-panel {
        min-height: auto;
    }

    .login-panel__content {
        padding: 24px;
    }

    .login-panel__title {
        font-size: 26px;
    }

    .code-dialog {
        grid-template-columns: 1fr;
    }

    .login-form__row {
        align-items: flex-start;
        flex-direction: column;
        gap: 10px;
    }

    .button {
        width: 100%;
    }
}