/*
Theme Name: Backdoor Tokyo
Theme URI: https://backdoor-tokyo.com
Author: Backdoor Tokyo
Author URI: https://backdoor-tokyo.com
Description: 東京（上野・日暮里エリア）グランドオープン予告 & オープニング求人特化LP
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.7
Requires PHP: 7.4
License: Proprietary
Text Domain: backdoor-tokyo
*/

/* =====================================================
   RESET & BASE
   ===================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: 'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;
    background-color: #0a0a0a;
    color: #e0e0e0;
    line-height: 1.7;
    -webkit-font-smoothing: antialiased;
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

a {
    color: inherit;
    text-decoration: none;
}

ul, ol {
    list-style: none;
}

table {
    border-collapse: collapse;
    width: 100%;
}

/* =====================================================
   CSS CUSTOM PROPERTIES（カラーパレット）
   ===================================================== */
:root {
    --color-bg:           #0a0a0a;
    --color-bg-section:   #111111;
    --color-bg-card:      #1a1a1a;
    --color-gold:         #c9a84c;
    --color-gold-light:   #e8c96a;
    --color-gold-dark:    #a07830;
    --color-white:        #f5f5f5;
    --color-gray-light:   #d0d0d0;
    --color-gray:         #888888;
    --color-gray-dark:    #333333;
    --color-border:       #2a2a2a;
    --color-success:      #4caf78;
    --color-error:        #e05555;
    --color-line:         #06c755;

    --font-ja:            'Noto Sans JP', 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', Meiryo, sans-serif;

    --radius-sm:          4px;
    --radius-md:          8px;
    --radius-lg:          16px;

    --shadow-gold:        0 0 20px rgba(201, 168, 76, 0.25);
    --shadow-card:        0 4px 24px rgba(0, 0, 0, 0.5);

    --transition:         0.3s ease;

    --container-max:      960px;
    --container-px:       20px;
}

/* =====================================================
   LAYOUT UTILITIES
   ===================================================== */
.container {
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-px);
}

.section {
    padding-block: 64px;
}

@media (max-width: 767px) {
    .section {
        padding-block: 48px;
    }
}

/* =====================================================
   TYPOGRAPHY
   ===================================================== */
.section-title {
    font-size: clamp(1.4rem, 4vw, 2rem);
    font-weight: 700;
    color: var(--color-gold);
    text-align: center;
    letter-spacing: 0.08em;
    margin-bottom: 8px;
}

.section-subtitle {
    font-size: clamp(0.85rem, 2.5vw, 1rem);
    color: var(--color-gray);
    text-align: center;
    letter-spacing: 0.05em;
    margin-bottom: 48px;
}

.section-divider {
    width: 48px;
    height: 2px;
    background: linear-gradient(90deg, var(--color-gold-dark), var(--color-gold-light));
    margin: 12px auto 40px;
    border: none;
}

/* =====================================================
   SITE HEADER
   ===================================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: rgba(10, 10, 10, 0.96);
    border-bottom: 1px solid var(--color-border);
    padding-block: 14px;
    backdrop-filter: blur(8px);
}

.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
}

.site-logo-link {
    display: flex;
    align-items: center;
    flex-shrink: 0;
}

.site-logo-img {
    height: 40px;
    width: auto;
    max-width: 200px;
    object-fit: contain;
    display: block;
}

@media (max-width: 480px) {
    .site-logo-img {
        height: 32px;
    }
}

.header-label {
    font-size: 0.7rem;
    letter-spacing: 0.12em;
    color: var(--color-gray);
    text-transform: uppercase;
    white-space: nowrap;
}

/* =====================================================
   HERO / FIRST VIEW
   ===================================================== */
.hero {
    position: relative;
    min-height: 90svh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    overflow: hidden;
    background: #050505;
}

.hero-bg {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse at 50% 60%, rgba(201, 168, 76, 0.08) 0%, transparent 70%),
        linear-gradient(180deg, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.7) 100%);
}

/* 将来的に背景画像を入れる際はここに img タグを配置 */
.hero-bg-img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.35;
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: 80px var(--container-px) 100px;
    max-width: 800px;
}

.hero-eyebrow {
    display: inline-block;
    font-size: clamp(0.7rem, 2vw, 0.85rem);
    letter-spacing: 0.2em;
    color: var(--color-gold);
    border: 1px solid var(--color-gold-dark);
    padding: 6px 20px;
    border-radius: 100px;
    margin-bottom: 28px;
    text-transform: uppercase;
}

.hero-date {
    font-size: clamp(1rem, 3vw, 1.3rem);
    color: var(--color-gold-light);
    letter-spacing: 0.05em;
    margin-bottom: 12px;
    font-weight: 500;
}

.hero-title {
    font-size: clamp(1.8rem, 6vw, 3.2rem);
    font-weight: 900;
    line-height: 1.3;
    color: var(--color-white);
    letter-spacing: 0.03em;
    margin-bottom: 12px;
}

.hero-title .accent {
    color: var(--color-gold);
}

.hero-catch {
    font-size: clamp(1rem, 3.5vw, 1.5rem);
    font-weight: 700;
    color: var(--color-gold-light);
    letter-spacing: 0.08em;
    margin-bottom: 32px;
    padding-bottom: 32px;
    border-bottom: 1px solid var(--color-border);
}

.hero-sub {
    font-size: clamp(0.85rem, 2.5vw, 1rem);
    color: var(--color-gray-light);
    line-height: 1.9;
    margin-bottom: 40px;
}

/* =====================================================
   BUTTON STYLES
   ===================================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 16px 36px;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.06em;
    cursor: pointer;
    transition: all var(--transition);
    border: none;
    text-align: center;
    line-height: 1.4;
}

.btn-gold {
    background: linear-gradient(135deg, var(--color-gold-dark), var(--color-gold), var(--color-gold-light));
    color: #0a0a0a;
    box-shadow: var(--shadow-gold);
}

.btn-gold:hover {
    filter: brightness(1.12);
    transform: translateY(-2px);
    box-shadow: 0 6px 30px rgba(201, 168, 76, 0.45);
}

.btn-line {
    background: var(--color-line);
    color: #fff;
    font-size: 1.05rem;
    padding: 18px 40px;
    border-radius: var(--radius-md);
    box-shadow: 0 4px 20px rgba(6, 199, 85, 0.3);
}

.btn-line:hover {
    filter: brightness(1.1);
    transform: translateY(-2px);
    box-shadow: 0 6px 28px rgba(6, 199, 85, 0.45);
}

.btn-outline {
    background: transparent;
    color: var(--color-gold);
    border: 1px solid var(--color-gold);
}

.btn-outline:hover {
    background: rgba(201, 168, 76, 0.08);
}

.btn-lg {
    padding: 20px 48px;
    font-size: 1.1rem;
}

.btn-block {
    display: flex;
    width: 100%;
}

.btn-icon {
    font-size: 1.3em;
    line-height: 1;
}

.hero-cta {
    display: flex;
    flex-direction: column;
    gap: 16px;
    align-items: center;
}

@media (min-width: 520px) {
    .hero-cta {
        flex-direction: row;
        justify-content: center;
    }
}

/* =====================================================
   CONCEPT / MERIT SECTION
   ===================================================== */
.concept-section {
    background: var(--color-bg-section);
}

.merit-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 24px;
}

@media (min-width: 640px) {
    .merit-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

.merit-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    transition: border-color var(--transition), transform var(--transition);
}

.merit-card:hover {
    border-color: var(--color-gold-dark);
    transform: translateY(-3px);
}

.merit-card-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 56px;
    height: 56px;
    background: rgba(201, 168, 76, 0.08);
    border: 1px solid var(--color-gold-dark);
    border-radius: var(--radius-md);
    margin-bottom: 20px;
    color: var(--color-gold);
}

.merit-card-title {
    font-size: 1.05rem;
    font-weight: 700;
    color: var(--color-gold-light);
    margin-bottom: 10px;
    letter-spacing: 0.04em;
}

.merit-card-body {
    font-size: 0.9rem;
    color: var(--color-gray-light);
    line-height: 1.8;
}

/* =====================================================
   RECRUITMENT TABLE SECTION
   ===================================================== */
.recruit-section {
    background: var(--color-bg);
}

.recruit-table-wrapper {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
}

.recruit-table {
    min-width: 520px;
}

.recruit-table th,
.recruit-table td {
    padding: 18px 24px;
    text-align: left;
    font-size: 0.95rem;
    border-bottom: 1px solid var(--color-border);
    vertical-align: top;
}

.recruit-table th {
    background: var(--color-bg-card);
    color: var(--color-gold);
    font-weight: 700;
    letter-spacing: 0.05em;
    white-space: nowrap;
    width: 30%;
}

.recruit-table td {
    background: var(--color-bg-section);
    color: var(--color-gray-light);
    line-height: 1.8;
}

.recruit-table tr:last-child th,
.recruit-table tr:last-child td {
    border-bottom: none;
}

.recruit-table td strong {
    color: var(--color-white);
    font-weight: 700;
}

.recruit-table td .note {
    font-size: 0.82rem;
    color: var(--color-gray);
    margin-top: 4px;
}

.tag-badge {
    display: inline-block;
    background: rgba(201, 168, 76, 0.15);
    color: var(--color-gold);
    border: 1px solid var(--color-gold-dark);
    border-radius: 100px;
    font-size: 0.75rem;
    padding: 3px 12px;
    margin-top: 6px;
    font-weight: 700;
    letter-spacing: 0.06em;
}

/* =====================================================
   APPLICATION CTA SECTION
   ===================================================== */
.cta-section {
    background: linear-gradient(180deg, var(--color-bg-section) 0%, #0d0d0d 100%);
    text-align: center;
}

.cta-box {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 48px 32px;
    max-width: 640px;
    margin-inline: auto;
}

.cta-note {
    font-size: 0.82rem;
    color: var(--color-gray);
    margin-top: 16px;
}

.cta-divider {
    display: flex;
    align-items: center;
    gap: 16px;
    margin-block: 24px;
    color: var(--color-gray);
    font-size: 0.85rem;
}

.cta-divider::before,
.cta-divider::after {
    content: '';
    flex: 1;
    height: 1px;
    background: var(--color-border);
}

/* =====================================================
   MAIL FORM SECTION
   ===================================================== */
.form-section {
    background: var(--color-bg);
}

.form-card {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: 40px 32px;
    max-width: 680px;
    margin-inline: auto;
}

@media (max-width: 767px) {
    .form-card {
        padding: 28px 20px;
    }
}

.form-group {
    margin-bottom: 24px;
}

.form-label {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    font-weight: 700;
    color: var(--color-gray-light);
    margin-bottom: 8px;
    letter-spacing: 0.03em;
}

.form-required {
    font-size: 0.72rem;
    background: var(--color-error);
    color: #fff;
    border-radius: 3px;
    padding: 2px 7px;
    letter-spacing: 0.05em;
}

.form-optional {
    font-size: 0.72rem;
    background: var(--color-gray-dark);
    color: var(--color-gray-light);
    border-radius: 3px;
    padding: 2px 7px;
}

.form-input,
.form-textarea {
    width: 100%;
    background: #0f0f0f;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    font-size: 0.95rem;
    font-family: var(--font-ja);
    color: var(--color-white);
    transition: border-color var(--transition), box-shadow var(--transition);
    -webkit-appearance: none;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-color: var(--color-gold-dark);
    box-shadow: 0 0 0 3px rgba(201, 168, 76, 0.12);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--color-gray);
}

.form-textarea {
    resize: vertical;
    min-height: 140px;
}

.form-hint {
    font-size: 0.8rem;
    color: var(--color-gray);
    margin-top: 6px;
}

.form-error-msg {
    font-size: 0.82rem;
    color: var(--color-error);
    margin-top: 5px;
}

/* フォーム送信結果メッセージ */
.form-notice {
    border-radius: var(--radius-md);
    padding: 18px 22px;
    margin-bottom: 28px;
    font-size: 0.93rem;
    line-height: 1.7;
}

.form-notice--success {
    background: rgba(76, 175, 120, 0.12);
    border: 1px solid var(--color-success);
    color: var(--color-success);
}

.form-notice--error {
    background: rgba(224, 85, 85, 0.1);
    border: 1px solid var(--color-error);
    color: var(--color-error);
}

.form-notice ul {
    list-style: disc;
    padding-left: 1.2em;
    margin-top: 8px;
}

.form-submit-wrap {
    text-align: center;
    margin-top: 8px;
}

/* 身長・体重・年齢 3列 */
.form-row-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 12px;
}

@media (max-width: 480px) {
    .form-row-3 {
        grid-template-columns: 1fr;
        gap: 10px;
    }
}

.form-sublabel {
    display: block;
    font-size: 0.78rem;
    color: var(--color-gray);
    margin-bottom: 6px;
    letter-spacing: 0.03em;
}

/* セレクト */
.form-select {
    width: 100%;
    background: #0f0f0f;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    padding: 14px 16px;
    font-size: 0.95rem;
    font-family: var(--font-ja);
    color: var(--color-white);
    cursor: pointer;
    -webkit-appearance: none;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23888' stroke-width='1.5' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    transition: border-color var(--transition), box-shadow var(--transition);
}

.form-select:focus {
    outline: none;
    border-color: var(--color-gold-dark);
    box-shadow: 0 0 0 3px rgba(201, 168, 76, 0.12);
}

.form-select option {
    background: #1a1a1a;
    color: var(--color-white);
}

/* ファイルアップロードエリア */
.form-file-area {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-md);
    padding: 28px 20px;
    cursor: pointer;
    transition: border-color var(--transition), background var(--transition);
    text-align: center;
}

.form-file-area:hover {
    border-color: var(--color-gold-dark);
    background: rgba(201, 168, 76, 0.04);
}

.form-file-icon {
    color: var(--color-gold-dark);
    display: flex;
    align-items: center;
    justify-content: center;
}

.form-file-text {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-gray-light);
}

.form-file-hint {
    font-size: 0.78rem;
    color: var(--color-gray);
}

.form-file-input-hidden {
    position: absolute;
    width: 1px;
    height: 1px;
    opacity: 0;
    pointer-events: none;
}

/* =====================================================
   SITE FOOTER
   ===================================================== */
.site-footer {
    background: #050505;
    border-top: 1px solid var(--color-border);
    padding-block: 40px 80px;
    text-align: center;
}

.footer-logo {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-gold);
    letter-spacing: 0.1em;
    margin-bottom: 12px;
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 24px;
    flex-wrap: wrap;
    margin-bottom: 24px;
}

.footer-links a {
    font-size: 0.82rem;
    color: var(--color-gray);
    transition: color var(--transition);
}

.footer-links a:hover {
    color: var(--color-gold);
}

.footer-copy {
    font-size: 0.78rem;
    color: var(--color-gray);
    letter-spacing: 0.05em;
}

/* =====================================================
   FLOATING LINE BUTTON（固定フローティングCTA）
   ===================================================== */
.floating-cta {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 200;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 10px;
}

.floating-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--color-line);
    color: #fff;
    font-size: 0.88rem;
    font-weight: 700;
    padding: 14px 22px;
    border-radius: 100px;
    box-shadow: 0 4px 20px rgba(6, 199, 85, 0.45);
    transition: transform var(--transition), box-shadow var(--transition);
    letter-spacing: 0.04em;
    white-space: nowrap;
}

.floating-btn:hover {
    transform: translateY(-3px) scale(1.03);
    box-shadow: 0 8px 28px rgba(6, 199, 85, 0.55);
}

.floating-btn-icon {
    font-size: 1.3rem;
    line-height: 1;
}

/* デスクトップでは少し控えめに */
@media (min-width: 768px) {
    .floating-cta {
        bottom: 32px;
        right: 32px;
    }
    .floating-btn {
        padding: 16px 28px;
        font-size: 0.95rem;
    }
}