:root {
    --navy: #0a1628;
    --green: #1a6b4a;
    --green-light: #228b5b;
    --white: #ffffff;
    --text-dark: #1a1a2e;
    --text-light: #8892a4;
    --border-light: #dfe3eb;
    --gold-accent: #c9a84c;
    --shadow-md: 0 4px 20px rgba(10,22,40,0.10);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.st-form {
    max-width: 600px;
    margin: 0 auto;
    background: var(--white);
    border-radius: var(--radius-lg);
    padding: 40px;
    box-shadow: var(--shadow-md);
}

.st-form__group {
    margin-bottom: 20px;
}

.st-form__group--checkbox {
    margin-bottom: 18px;
}

.st-form__label {
    display: block;
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--navy);
    margin-bottom: 6px;
}

.st-form__required {
    color: #c43131;
    font-weight: 700;
}

.st-form__input,
.st-form__select,
.st-form__textarea {
    width: 100%;
    padding: 14px 16px;
    border: 1px solid var(--border-light);
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    color: var(--text-dark);
    background: var(--white);
    transition: var(--transition);
    font-family: inherit;
}

.st-form__select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    padding-right: 48px;
    background-image: linear-gradient(45deg, transparent 50%, rgba(10,22,40,0.55) 50%), linear-gradient(135deg, rgba(10,22,40,0.55) 50%, transparent 50%);
    background-position: calc(100% - 21px) 50%, calc(100% - 15px) 50%;
    background-size: 5px 5px, 5px 5px;
    background-repeat: no-repeat;
}

.st-form__input:focus,
.st-form__select:focus,
.st-form__textarea:focus {
    outline: none;
    border-color: var(--green);
    box-shadow: 0 0 0 3px rgba(26,107,74,0.1);
}

.st-form__textarea {
    min-height: 100px;
    resize: vertical;
}

.st-form__checkbox-label {
    display: grid;
    grid-template-columns: 18px minmax(0, 1fr);
    column-gap: 14px;
    align-items: start;
    font-size: 0.92rem;
    line-height: 1.6;
    color: var(--text-dark);
}

.st-form input[type="checkbox"].st-form__checkbox,
.st-form__checkbox {
    width: 18px;
    height: 18px;
    display: block;
    margin: 0 !important;
    align-self: start;
    transform: translateY(4px);
    vertical-align: top;
    accent-color: var(--green);
}

.st-form__checkbox.st-form__input--error {
    outline: 1px solid #c54c4c;
    outline-offset: 2px;
}

.st-form__checkbox-label a {
    color: var(--green);
    text-decoration: underline;
}

.st-form__info {
    margin: 10px 0 0;
    padding-left: 0;
    border-left: none;
    font-size: 0.86rem;
    line-height: 1.65;
    color: #5f6678;
}

.st-form__info a {
    color: var(--green);
    text-decoration: underline;
}

.st-form__notice {
    padding: 14px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.95rem;
    font-weight: 600;
    display: none;
}

.st-form__messages {
    display: none;
    margin-top: 18px;
}

.st-form__messages.is-visible {
    display: block;
}

.st-form__messages.is-visible .st-form__notice--success,
.st-form__messages.is-visible .st-form__notice--error {
    display: block;
}

.st-form__notice--success {
    background: rgba(26,107,74,0.08);
    border: 1px solid rgba(26,107,74,0.2);
    color: var(--green);
}

.st-form__notice--error {
    background: rgba(179,39,39,0.08);
    border: 1px solid rgba(179,39,39,0.2);
    color: #8a2020;
}

.st-form__error {
    display: none;
    margin-top: 8px;
    font-size: 0.85rem;
    color: #8a2020;
}

.st-form__error:not(:empty) {
    display: block;
}

.st-form__input--error {
    border-color: #c54c4c;
}

.st-form .st-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 16px 36px;
    font-size: 1rem;
    font-weight: 700;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: var(--transition);
    text-align: center;
    line-height: 1.3;
    width: 100%;
    margin-top: 8px;
}

.st-form .st-btn:focus-visible {
    outline: 3px solid var(--gold-accent);
    outline-offset: 3px;
}

.st-form .st-btn--primary {
    background: var(--green);
    background-image: none;
    color: #fff !important;
    box-shadow: 0 4px 16px rgba(26,107,74,0.3);
}

.st-form .st-btn--primary:hover {
    background: var(--green-light);
    box-shadow: 0 6px 24px rgba(26,107,74,0.4);
    transform: translateY(-2px);
}

.st-form .st-btn--primary:active {
    background: #145a3e;
    box-shadow: 0 3px 12px rgba(26,107,74,0.28);
    transform: translateY(0);
}

.st-form .st-btn--lg {
    padding: 18px 44px;
    font-size: 1.1rem;
    border-radius: var(--radius-md);
}

.st-form .st-btn--loading {
    opacity: 0.8;
    cursor: wait;
    pointer-events: none;
}

.st-form .st-btn[disabled] {
    pointer-events: none;
}

.st-form .fa-solid {
    font-style: normal;
}

.st-microcopy {
    font-size: 0.85rem;
    color: var(--text-light);
    margin-top: 10px;
}

.st-microcopy--center {
    text-align: center;
}

@media (max-width: 768px) {
    .st-form {
        padding: 32px 24px;
    }

    .st-form__checkbox-label {
        font-size: 0.9rem;
    }

    .st-form__info {
        margin-left: 0;
        padding-left: 0;
    }
}