/* Летняя школа по управлению интернетом — стили формы (референс: summerigschool.cctld.ru) */

:root {
    --sig-primary: #72acf9;
    --sig-primary-dark: #5a96e8;
    --sig-accent-red: #ff4242;
    --sig-bg: #ffffff;
    --sig-surface: #ffffff;
    --sig-text: #000000;
    --sig-body: #333333;
    --sig-muted: #a5a5a5;
    --sig-border: #d7d7da;
    --sig-footer-bg: #f5f5f5;
    --sig-radius: 3px;
    --sig-font: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body.sig-page {
    margin: 0;
    font-family: var(--sig-font);
    font-size: 16px;
    line-height: 1.5;
    color: var(--sig-body);
    background: var(--sig-bg);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.sig-container {
    width: min(1470px, calc(100% - 60px));
    margin: 0 auto;
}

/* --- Шапка как на summerigschool.cctld.ru --- */
.sig-menu {
    background: #fff;
    border-bottom: 1px solid #eee;
}

.sig-navbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    flex-wrap: wrap;
    padding: 16px 0;
}

.sig-navbar__brand {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.sig-navbar__brand img {
    display: block;
    height: auto;
    max-height: 48px;
    width: auto;
    max-width: min(220px, 55vw);
}

.sig-navbar__links {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 8px 24px;
}

.sig-navbar__links a {
    color: #000;
    text-decoration: none;
    font-size: 18px;
    font-weight: 600;
    line-height: 1.35;
    transition: color 0.2s;
}

.sig-navbar__links a:hover {
    color: var(--sig-primary);
}

.sig-main {
    flex: 1;
    padding: 48px 0 72px;
}

.sig-title {
    margin: 0 0 28px;
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    line-height: 1.2;
    color: var(--sig-text);
}

.sig-subtitle {
    margin: 0 0 12px;
    font-size: 1.35rem;
    font-weight: 700;
    color: var(--sig-text);
}

.sig-intro {
    background: #f9fbff;
    border-radius: var(--sig-radius);
    padding: 22px 26px;
    margin-bottom: 32px;
    border: 1px solid #e8eef8;
}

.sig-intro p {
    margin: 0 0 10px;
}

.sig-intro p:last-child {
    margin-bottom: 0;
}

.sig-form {
    background: var(--sig-surface);
    border-radius: var(--sig-radius);
    padding: 32px 28px 36px;
    border: 1px solid #eee;
}

.sig-form__title {
    margin: 0 0 8px;
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--sig-text);
}

.sig-form__title + .sig-form__section-desc {
    margin: 0 0 24px;
}

.sig-form__row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
}

.sig-form__field {
    margin-bottom: 20px;
}

.sig-form__field--narrow {
    max-width: 160px;
}

.sig-form__field label,
.sig-form__label {
    display: block;
    margin-bottom: 6px;
    font-weight: 600;
    font-size: 16px;
    color: var(--sig-text);
}

.sig-required {
    color: var(--sig-accent-red);
}

.sig-form__section-desc {
    margin: 0 0 10px;
}

.sig-form__field .sig-form__section-desc {
    margin: 0 0 8px;
}

.sig-form__section-desc small {
    font-size: 14px;
    line-height: 1.45;
    color: var(--sig-muted);
    font-weight: 400;
}

.sig-form input[type="text"],
.sig-form input[type="email"],
.sig-form input[type="number"],
.sig-form select,
.sig-form textarea {
    width: 100%;
    padding: 12px 14px;
    border: 1px solid var(--sig-border);
    border-radius: var(--sig-radius);
    font: inherit;
    color: inherit;
    background: #fff;
    transition: border-color 0.2s, box-shadow 0.2s;
}

.sig-form input::placeholder,
.sig-form textarea::placeholder {
    color: #c3c4c7;
}

.sig-select__wrap {
    display: block;
}

.sig-form select {
    appearance: none;
    background-image: url('../images/select-arrow-dark.svg');
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
    cursor: pointer;
}

.sig-form input:focus,
.sig-form select:focus,
.sig-form textarea:focus {
    outline: none;
    border-color: var(--sig-primary);
    box-shadow: 0 0 0 3px rgba(114, 172, 249, 0.2);
}

.sig-form textarea {
    resize: vertical;
    min-height: 160px;
}

.sig-hint {
    margin: 6px 0 0;
    font-size: 14px;
    color: var(--sig-muted);
}

.sig-radio-group {
    display: flex;
    gap: 24px;
    padding-top: 2px;
}

.sig-radio {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    cursor: pointer;
    font-weight: 500;
}

.sig-radio input {
    width: 18px;
    height: 18px;
    accent-color: var(--sig-primary);
}

.sig-motivation,
.sig-consents {
    margin-top: 32px;
    padding-top: 28px;
    border-top: 1px solid #e5e7eb;
}

.sig-char-count {
    margin: 6px 0 0;
    font-size: 14px;
    color: var(--sig-muted);
    text-align: right;
}

.sig-check {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    cursor: pointer;
    font-size: 16px;
    line-height: 1.4;
}

.sig-check input {
    margin-top: 3px;
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    accent-color: var(--sig-primary);
}

.sig-link-btn {
    display: inline-block;
    margin-top: 6px;
    padding: 0;
    border: none;
    background: none;
    color: var(--sig-primary);
    font: inherit;
    font-size: 14px;
    cursor: pointer;
    text-decoration: underline;
}

.sig-consent-text {
    margin-top: 10px;
    padding: 12px 14px;
    background: #f9f9f9;
    border-radius: var(--sig-radius);
    font-size: 14px;
    line-height: 1.5;
    color: var(--sig-muted);
    white-space: pre-wrap;
    max-height: 280px;
    overflow-y: auto;
}

.sig-captcha {
    margin: 20px 0;
}

.sig-message {
    margin: 16px 0;
    padding: 12px 16px;
    border-radius: var(--sig-radius);
    font-size: 15px;
}

.sig-message--error {
    background: #fef2f2;
    color: #b91c1c;
    border: 1px solid #fecaca;
}

.sig-message--success {
    background: #ecfdf5;
    color: #047857;
    border: 1px solid #a7f3d0;
}

.sig-submit {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-top: 12px;
    padding: 16px 48px;
    border: none;
    border-radius: var(--sig-radius);
    background: var(--sig-primary);
    color: #fff;
    font: inherit;
    font-size: 17px;
    font-weight: 700;
    line-height: 1.2;
    cursor: pointer;
    transition: background 0.2s, transform 0.15s;
    text-decoration: none;
}

.sig-submit:hover:not(:disabled) {
    background: var(--sig-primary-dark);
}

.sig-submit:disabled {
    opacity: 0.65;
    cursor: not-allowed;
}

.sig-submit--link {
    margin-top: 20px;
}

/* --- Футер как на summerigschool.cctld.ru --- */
.sig-footer {
    background: var(--sig-footer-bg);
    color: var(--sig-muted);
    padding: 45px 0;
    margin-top: auto;
    font-size: 16px;
}

.sig-footer__inner {
    display: flex;
    align-items: center;
    justify-content: flex-start;
    gap: 24px 40px;
    flex-wrap: wrap;
}

.sig-footer__logo {
    margin-right: 42px;
    flex-shrink: 0;
}

.sig-footer__logo img {
    display: block;
    max-width: 180px;
    height: auto;
}

.sig-footer__social {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px 28px;
    list-style: none;
    margin: 0;
    padding: 0;
}

.sig-footer__social a {
    color: var(--sig-primary);
    text-decoration: none;
    font-weight: 600;
    font-size: 18px;
    line-height: 1.4;
}

.sig-footer__social a:hover {
    text-decoration: underline;
}

.sig-footer__copy {
    margin-left: auto;
    font-weight: 600;
    font-size: 16px;
    line-height: 1.6;
    color: var(--sig-muted);
    text-align: right;
}

.sig-footer__copy a {
    color: var(--sig-muted);
    text-decoration: underline;
}

.sig-footer__copy a:hover {
    color: var(--sig-primary);
}

.sig-success {
    background: var(--sig-surface);
    border-radius: var(--sig-radius);
    padding: 40px 32px;
    border: 1px solid #eee;
    text-align: center;
}

.sig-success p {
    margin: 0 0 14px;
    font-size: 17px;
}

/* --- Страница закрытого приёма заявок --- */
.sig-closed {
    max-width: 720px;
    margin: 0 auto;
    background: var(--sig-surface);
    border-radius: var(--sig-radius);
    padding: 52px 48px 48px;
    border: 1px solid #eee;
    text-align: center;
}

.sig-closed__icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 72px;
    height: 72px;
    margin: 0 auto 28px;
    border-radius: 50%;
    background: #f0f6ff;
    color: var(--sig-primary);
}

.sig-closed__title {
    margin: 0 auto 20px;
    max-width: 22em;
    font-size: clamp(1.35rem, 3.2vw, 2rem);
    font-weight: 700;
    line-height: 1.25;
    color: var(--sig-text);
}

.sig-closed__body {
    margin: 0 auto 32px;
    max-width: 28em;
}

.sig-closed__body p {
    margin: 0 0 12px;
    font-size: 17px;
    line-height: 1.55;
    color: var(--sig-body);
}

.sig-closed__body p:last-child {
    margin-bottom: 0;
}

.sig-page--closed .sig-closed .sig-submit--link {
    margin-top: 0;
}

@media (max-width: 991px) {
    .sig-container {
        width: calc(100% - 32px);
    }

    .sig-navbar__links {
        gap: 8px 16px;
    }

    .sig-navbar__links a {
        font-size: 16px;
    }

    .sig-footer__inner {
        flex-direction: column;
        align-items: center;
        text-align: center;
    }

    .sig-footer__logo {
        margin-right: 0;
    }

    .sig-footer__copy {
        margin-left: 0;
        text-align: center;
    }
}

@media (max-width: 600px) {
    .sig-main {
        padding: 28px 0 48px;
    }

    .sig-form {
        padding: 22px 16px 28px;
    }

    .sig-form__field--narrow {
        max-width: none;
    }

    .sig-closed {
        padding: 36px 24px 32px;
    }

    .sig-closed__icon {
        width: 64px;
        height: 64px;
        margin-bottom: 22px;
    }
}