/* form.css */
@charset "UTF-8";

/* ========================
   Form Page
======================== */

.form {
    background: #E9E2D5;
    min-height: 100vh;
}

.form__header {
    text-align: center;
    margin-bottom: 3rem;
}

.form__title {
    font-size: clamp(1.5rem, 5vw, 2.5rem);
    font-weight: 700;
    color: #333;
}

.form__subtitle {
    font-size: clamp(1rem, 3vw, 1.25rem);
    color: #CB1400;
    font-size: 0.875rem;
    font-weight: 700;
    letter-spacing: -0.04375rem;
    background: linear-gradient(90deg, #FFD502 0%, #FFDF3D 52.4%, #FFD502 100%);
    padding: 0.3rem 2rem;
    display: inline;
}

.form__notice-text {
    color: #CB1400;
    font-size: 0.6rem;
    margin-top: 0.5rem;
    text-align: center;
}

/* ========================
   Form Fields
======================== */

.form__field {
    margin-bottom: 1rem;
}

.form__label {
    display: block;
    font-size: 1rem;
}

.form__label--required::after {
    content: '必須';
    color: #fff;
    font-weight: 700;
    background: #C81501;
    padding: 0.2rem 0.5rem;
    color: #FFF;
    text-align: center;
    font-size: 0.75rem;
    font-weight: 700;
    margin-left: 0.5rem;
    vertical-align: text-bottom;
}

.form__input,
.form__textarea,
.form__select {
    width: 100%;
    padding: 1rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
    background: #fff;
}

.form__input:focus,
.form__textarea:focus,
.form__select:focus {
    outline: none;
    border-color: #ff6b35;
    box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

.form__textarea {
    min-height: 120px;
    resize: vertical;
}

.form__select {
    cursor: pointer;
}

/* ========================
   Form Grid
======================== */

.form__grid {
    display: grid;
    gap: 1.5rem;
}

@media (min-width: 768px) {
    .form__grid--2 {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* ========================
   Radio Buttons
======================== */

.form__radio-group {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin-top: 0.5rem;
}

.form__radio-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.form__radio-input {
    width: 1.2rem;
    height: 1.2rem;
    accent-color: #ff6b35;
    cursor: pointer;
}

.form__radio-label {
    font-size: 1rem;
    color: #333;
    cursor: pointer;
}

/* ========================
   Checkbox
======================== */

.form__checkbox-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    margin-top: 0.5rem;
}

.form__checkbox-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
}

.form__checkbox-input {
    width: 1.2rem;
    height: 1.2rem;
    accent-color: #ff6b35;
    cursor: pointer;
}

.form__checkbox-label {
    font-size: 1rem;
    color: #333;
    cursor: pointer;
}

/* ========================
   Submit Button
======================== */

.form__submit {
    width: 100%;
    padding: 1.25rem 2rem;
    color: white;
    border: none;
    font-size: 1.125rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    border-radius: 0.625rem;
    background: #C81501;
    box-shadow: 0 -4px 0 0 #ED301B, 0 4px 0 0 #640A00;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.form__submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 107, 53, 0.4);
}

.form__submit:active {
    transform: translateY(0);
}

.form__submit:disabled {
    background: #6c757d;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.form__mail-image {
    margin-right: 0.5rem;
}

.form__button-image {
    position: absolute;
    right: 0;
    width: 5.6rem;
    height: 5.3rem;
    bottom: 0;

    @media (min-width: 900px) {
        right: 10%;
    }
}

/* ========================
   Form Info
======================== */

.form__info {
    background: #f8f9fa;
    padding: 1.5rem;
    border-radius: 8px;
    margin-bottom: 2rem;
}

.form__info-title {
    font-size: 1.125rem;
    font-weight: 700;
    color: #333;
    margin-bottom: 1rem;
}

.form__info-text {
    font-size: 0.875rem;
    color: #666;
    line-height: 1.6;
}

/* ========================
   Error States
======================== */

.form__field--error .form__input,
.form__field--error .form__textarea,
.form__field--error .form__select {
    border-color: #dc3545;
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

.form__error-message {
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.form__error-message::before {
    content: '⚠';
    font-size: 1rem;
}

/* ========================
   Success States
======================== */

.form__field--success .form__input,
.form__field--success .form__textarea,
.form__field--success .form__select {
    border-color: #28a745;
    box-shadow: 0 0 0 3px rgba(40, 167, 69, 0.1);
}

.form__success-message {
    color: #28a745;
    font-size: 0.875rem;
    margin-top: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.form__success-message::before {
    content: '✓';
    font-size: 1rem;
}

/* ========================
   Loading States
======================== */

.form__submit--loading {
    position: relative;
    color: transparent;
}

.form__submit--loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 1.5rem;
    height: 1.5rem;
    border: 2px solid transparent;
    border-top: 2px solid white;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: translate(-50%, -50%) rotate(0deg);
    }

    100% {
        transform: translate(-50%, -50%) rotate(360deg);
    }
}

/* ========================
   Responsive Design
======================== */

@media (max-width: 767px) {
    .form {
        padding: 1rem 0;
    }

    .form__radio-group {
        flex-direction: column;
        gap: 0.75rem;
    }

    .form__submit {
        padding: 1rem 2rem 1rem 0rem;
        font-size: 1rem;
    }
}

/* ========================
   Accessibility
======================== */

.form__input:focus-visible,
.form__textarea:focus-visible,
.form__select:focus-visible,
.form__submit:focus-visible {
    outline: 2px solid #ff6b35;
    outline-offset: 2px;
}

.form__radio-input:focus-visible,
.form__checkbox-input:focus-visible {
    outline: 2px solid #ff6b35;
    outline-offset: 2px;
}

/* ========================
   Print Styles
======================== */

@media print {
    .form__submit {
        display: none;
    }

    .form__container {
        box-shadow: none;
        border: 1px solid #ccc;
    }
}