@charset "utf-8";

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;700&family=Outfit:wght@400;700&display=swap');

/* ----------------------------------------------------------
    Design Tokens
------------------------------------------------------------- */
:root {
    --primary-color: #2D3436;
    --accent-color: #0984E3;
    --accent-light: #74B9FF;
    --bg-color: #FDFDFD;
    --card-bg: #FFFFFF;
    --text-color: #2D3436;
    --text-muted: #636E72;
    --error-color: #D63031;
    --success-color: #00B894;
    --border-color: #DFE6E9;
    --input-bg: #FFFFFF;
    
    --font-main: 'Outfit', 'Inter', "Hiragino Kaku Gothic ProN", "メイリオ", sans-serif;
    --border-radius: 12px;
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #0F172A;
        --card-bg: #1E293B;
        --text-color: #F1F5F9;
        --text-muted: #94A3B8;
        --border-color: #334155;
        --input-bg: #0F172A;
        --shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    }
}

/* ----------------------------------------------------------
    Reset & Base
------------------------------------------------------------- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    padding: 40px 20px;
}

a {
    color: var(--accent-color);
    text-decoration: none;
    transition: var(--transition);
}

a:hover {
    color: var(--accent-light);
}

/* ----------------------------------------------------------
    Animations
------------------------------------------------------------- */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ----------------------------------------------------------
    Layout
------------------------------------------------------------- */
#wrapper {
    max-width: 800px;
    margin: 0 auto;
    background: var(--card-bg);
    border-radius: 20px;
    box-shadow: var(--shadow);
    overflow: hidden;
    border: 1px solid var(--border-color);
    animation: fadeIn 0.8s ease-out;
}

#main {
    padding: 60px 40px;
}

@media (max-width: 600px) {
    #main {
        padding: 40px 20px;
    }
}

/* ----------------------------------------------------------
    Components
------------------------------------------------------------- */
.section__ttl {
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 30px;
    color: var(--primary-color);
    text-align: center;
    position: relative;
    padding-bottom: 15px;
}

.section__ttl::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 4px;
    background: var(--accent-color);
    border-radius: 2px;
}

#txt_explain {
    margin-bottom: 40px;
    text-align: center;
    color: var(--text-muted);
}

.red_txt {
    color: var(--error-color);
    background: rgba(214, 48, 49, 0.1);
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 30px;
    font-size: 14px;
    border-left: 4px solid var(--error-color);
}

.red_txt:empty {
    display: none;
}

/* Table styling for form data */
.table {
    width: 100%;
    border-collapse: separate;
    border-spacing: 0 15px;
}

.table tr {
    transition: var(--transition);
}

.table th, .table td {
    padding: 10px 0;
    vertical-align: top;
}

.table th {
    width: 200px;
    font-weight: 700;
    color: var(--text-color);
    text-align: left;
    padding-right: 20px;
    padding-top: 15px;
}

@media (max-width: 600px) {
    .table tr {
        display: block;
        margin-bottom: 20px;
    }
    .table th {
        display: block;
        width: 100%;
        padding-bottom: 5px;
    }
    .table td {
        display: block;
        width: 100%;
    }
}

/* ----------------------------------------------------------
    Form Elements
------------------------------------------------------------- */
input[type="text"],
input[type="password"],
input[type="email"],
input[type="tel"],
textarea,
select {
    width: 100%;
    padding: 12px 16px;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-color);
    font-family: inherit;
    font-size: 16px;
    transition: var(--transition);
}

input:focus, textarea:focus, select:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(9, 132, 227, 0.1);
}

textarea {
    min-height: 120px;
    resize: vertical;
}

/* Buttons */
.button_box {
    margin-top: 40px;
    display: flex;
    justify-content: center;
    gap: 20px;
}

input[type="submit"], .btn {
    padding: 14px 40px;
    font-size: 16px;
    font-weight: 700;
    border-radius: 30px;
    cursor: pointer;
    transition: var(--transition);
    border: none;
    display: inline-block;
}

input[name="submit_button"][value="確認"],
input[name="submit_button"][value="送信"] {
    background: var(--accent-color);
    color: white;
}

input[name="submit_button"][value="確認"]:hover,
input[name="submit_button"][value="送信"]:hover {
    background: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(9, 132, 227, 0.3);
}

input[name="submit_button"][value="戻る"] {
    background: transparent;
    border: 2px solid var(--border-color);
    color: var(--text-muted);
}

input[name="submit_button"][value="戻る"]:hover {
    border-color: var(--accent-color);
    color: var(--accent-color);
}

/* Footer links */
.site_link_box {
    margin-top: 40px;
    text-align: center;
}

.site_link_box a {
    font-size: 14px;
    color: var(--text-muted);
}

/* Checkbox & Radio */
input[type="checkbox"], input[type="radio"] {
    width: auto;
    margin-right: 8px;
}