/* ===================================
   web3tokai クリーンアップ＆交流会フォーム - スタイル
   =================================== */

/* ---------- CSS Variables ---------- */
:root {
    /* アースカラー＆カフェ調パレット */
    --color-bg-start: #f8f6f0;
    --color-bg-end: #ebede9;
    --color-primary: #386641;      /* ディープフォレストグリーン */
    --color-primary-light: #6a994e;/* ソフトグリーン */
    --color-primary-dark: #1b4332; /* ナイトグリーン */
    --color-accent: #a3b18a;       /* セージグリーン */
    --color-accent-light: #dad7cd; /* ライトセージ */
    --color-coffee: #6f4e37;       /* コーヒーブラウン */
    --color-coffee-light: #b08968; /* カフェラテブラウン */
    
    --color-card-bg: rgba(255, 255, 255, 0.92);
    --color-card-border: rgba(255, 255, 255, 0.6);
    --color-text: #2f3e35;         /* 暗いグリーン系グレー */
    --color-text-muted: #627267;
    --color-text-light: #ffffff;
    
    --color-input-bg: #ffffff;
    --color-input-border: #ccd5c9;
    --color-input-focus: #6a994e;
    --color-error: #bc4749;        /* 落ち着いたレッド */
    --color-success: #386641;
    
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 24px;
    --radius-xl: 32px;
    
    --shadow-card: 0 12px 40px rgba(47, 62, 53, 0.08);
    --shadow-input: inset 0 2px 4px rgba(0, 0, 0, 0.02);
    --shadow-button: 0 4px 14px rgba(56, 102, 65, 0.25);
    
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    
    --font-main: 'Noto Sans JP', sans-serif;
    --font-alt: 'Outfit', sans-serif;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-main);
    background: linear-gradient(135deg, var(--color-bg-start) 0%, var(--color-bg-end) 100%);
    color: var(--color-text);
    min-height: 100vh;
    line-height: 1.8;
    overflow-x: hidden;
}

/* ---------- Particles (装飾) ---------- */
.particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    font-size: 1.6rem;
    opacity: 0.12;
    animation: float 18s infinite linear;
}

.particle:nth-child(1) { left: 8%; animation-delay: 0s; animation-duration: 22s; }
.particle:nth-child(2) { left: 22%; animation-delay: 3s; animation-duration: 26s; }
.particle:nth-child(3) { left: 35%; animation-delay: 6s; animation-duration: 20s; }
.particle:nth-child(4) { left: 48%; animation-delay: 1.5s; animation-duration: 24s; }
.particle:nth-child(5) { left: 62%; animation-delay: 4.5s; animation-duration: 23s; }
.particle:nth-child(6) { left: 75%; animation-delay: 7s; animation-duration: 21s; }
.particle:nth-child(7) { left: 88%; animation-delay: 2.5s; animation-duration: 25s; }
.particle:nth-child(8) { left: 95%; animation-delay: 0.5s; animation-duration: 27s; }

@keyframes float {
    0% {
        transform: translateY(105vh) rotate(0deg) scale(0.8);
        opacity: 0;
    }
    10% {
        opacity: 0.12;
    }
    90% {
        opacity: 0.12;
    }
    100% {
        transform: translateY(-10vh) rotate(360deg) scale(1.2);
        opacity: 0;
    }
}

/* ---------- Container ---------- */
.container {
    position: relative;
    z-index: 1;
    max-width: 680px;
    margin: 0 auto;
    padding: 60px 20px;
    display: flex;
    flex-direction: column;
    gap: 40px;
}

/* ---------- Hero Header ---------- */
.hero {
    text-align: center;
    padding: 20px 0 10px;
}

.hero-badge {
    display: inline-block;
    background-color: var(--color-accent-light);
    color: var(--color-primary-dark);
    font-family: var(--font-alt);
    font-weight: 800;
    font-size: 0.85rem;
    letter-spacing: 0.15em;
    padding: 8px 18px;
    border-radius: 100px;
    margin-bottom: 20px;
    box-shadow: 0 4px 10px rgba(163, 177, 138, 0.15);
    text-transform: uppercase;
}

.hero-title {
    font-size: 2.2rem;
    font-weight: 900;
    line-height: 1.35;
    color: var(--color-primary-dark);
    letter-spacing: -0.02em;
}

.hero-title .highlight {
    background: linear-gradient(120deg, var(--color-primary-light) 0%, var(--color-primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    display: inline-block;
}

.hero-subtitle {
    margin-top: 12px;
    font-size: 1.1rem;
    color: var(--color-text-muted);
    font-weight: 500;
}

/* ---------- Cards Layout ---------- */
.info-card,
.form-card,
.success-card {
    background-color: var(--color-card-bg);
    border: 1px solid var(--color-card-border);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-card);
    padding: 40px;
    transition: transform var(--transition-normal);
}

.info-card:hover {
    transform: translateY(-2px);
}

/* ---------- Info Card Style ---------- */
.section-title {
    font-size: 1.4rem;
    font-weight: 800;
    color: var(--color-primary-dark);
    margin-bottom: 30px;
    display: flex;
    align-items: center;
    gap: 10px;
}

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

.info-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.info-icon {
    font-size: 1.5rem;
    background-color: rgba(106, 153, 78, 0.1);
    color: var(--color-primary);
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.info-content {
    display: flex;
    flex-direction: column;
}

.info-label {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 2px;
}

.info-value {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--color-text);
}

.info-detail {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

.info-links {
    display: flex;
    gap: 12px;
    margin-top: 10px;
}

.info-link {
    font-size: 0.8rem;
    font-weight: 700;
    color: var(--color-primary);
    text-decoration: none;
    background-color: #ffffff;
    border: 1px solid var(--color-input-border);
    padding: 6px 12px;
    border-radius: 8px;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.02);
    transition: all var(--transition-fast);
}

.info-link:hover {
    border-color: var(--color-primary-light);
    color: var(--color-primary-light);
    transform: translateY(-1px);
}

/* Timeline (当日の流れ) */
.schedule-section {
    margin-top: 40px;
    padding-top: 35px;
    border-top: 1px solid var(--color-input-border);
}

.schedule-title {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--color-primary-dark);
    margin-bottom: 25px;
}

.timeline {
    position: relative;
    padding-left: 20px;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 5px;
    left: 4px;
    width: 2px;
    height: 90%;
    background-color: var(--color-accent-light);
}

.timeline-item {
    position: relative;
    margin-bottom: 24px;
}

.timeline-item:last-child {
    margin-bottom: 0;
}

.timeline-item::before {
    content: '';
    position: absolute;
    top: 6px;
    left: -20px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background-color: var(--color-accent);
    border: 2px solid var(--color-bg-start);
    z-index: 1;
}

.timeline-item:nth-child(even)::before {
    background-color: var(--color-primary-light);
}

.timeline-time {
    font-family: var(--font-alt);
    font-weight: 800;
    font-size: 0.95rem;
    color: var(--color-primary);
    margin-bottom: 2px;
}

.timeline-content {
    background-color: rgba(255, 255, 255, 0.4);
    border-radius: 8px;
    padding: 10px 14px;
}

.timeline-event {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-text);
}

.timeline-event-highlight {
    font-size: 0.95rem;
    font-weight: 800;
    color: var(--color-primary-dark);
}

.timeline-desc {
    font-size: 0.85rem;
    color: var(--color-text-muted);
    margin-top: 4px;
}

.schedule-notice {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 20px;
}

/* Features List */
.content-features {
    margin-top: 40px;
    padding-top: 35px;
    border-top: 1px solid var(--color-input-border);
}

.features-title {
    font-size: 1.2rem;
    font-weight: 800;
    color: var(--color-primary-dark);
    margin-bottom: 20px;
}

.features-list {
    list-style: none;
}

.features-list li {
    font-size: 0.95rem;
    position: relative;
    padding-left: 24px;
    margin-bottom: 12px;
}

.features-list li::before {
    content: '✦';
    position: absolute;
    left: 0;
    color: var(--color-primary-light);
    font-weight: 700;
}

/* ---------- Form Style ---------- */
.form-card-title {
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--color-primary-dark);
    margin-bottom: 8px;
}

.form-instruction {
    font-size: 0.9rem;
    color: var(--color-text-muted);
    margin-bottom: 30px;
}

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

.form-group:last-of-type {
    margin-bottom: 32px;
}

.form-label {
    display: block;
    font-weight: 700;
    font-size: 0.95rem;
    color: var(--color-text);
    margin-bottom: 8px;
}

.required {
    background-color: var(--color-error);
    color: var(--color-text-light);
    font-size: 0.65rem;
    padding: 2px 6px;
    border-radius: 4px;
    margin-left: 6px;
    vertical-align: middle;
}

.optional {
    background-color: var(--color-text-muted);
    color: var(--color-text-light);
    font-size: 0.65rem;
    padding: 2px 6px;
    border-radius: 4px;
    margin-left: 6px;
    vertical-align: middle;
}

.form-help {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-bottom: 12px;
    margin-top: -4px;
}

/* Input text, select, textarea */
.input-wrapper {
    position: relative;
}

.input-icon {
    position: absolute;
    top: 50%;
    left: 16px;
    transform: translateY(-50%);
    font-size: 1.1rem;
    pointer-events: none;
    color: var(--color-text-muted);
}

.form-control {
    width: 100%;
    padding: 14px 16px 14px 44px;
    font-size: 0.95rem;
    font-family: var(--font-main);
    color: var(--color-text);
    background-color: var(--color-input-bg);
    border: 1px solid var(--color-input-border);
    border-radius: var(--radius-md);
    outline: none;
    box-shadow: var(--shadow-input);
    transition: all var(--transition-fast);
}

.form-control:focus {
    border-color: var(--color-input-focus);
    box-shadow: 0 0 0 4px rgba(106, 153, 78, 0.15);
}

select.form-control {
    appearance: none;
    -webkit-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23627267' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    background-size: 16px;
    padding-right: 44px;
}

textarea.form-control {
    padding-left: 16px;
    resize: vertical;
    min-height: 100px;
}

/* Radio Card (参加タイミング) */
.radio-card-group {
    display: grid;
    grid-template-columns: 1fr;
    gap: 12px;
}

.radio-card {
    display: block;
    cursor: pointer;
}

.radio-card input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.radio-card-content {
    display: flex;
    align-items: flex-start;
    padding: 16px;
    border: 1px solid var(--color-input-border);
    background-color: #ffffff;
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.radio-card input[type="radio"]:checked + .radio-card-content {
    border-color: var(--color-primary);
    background-color: rgba(56, 102, 65, 0.03);
    box-shadow: 0 4px 15px rgba(56, 102, 65, 0.05);
}

.radio-custom {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-input-border);
    border-radius: 50%;
    margin-right: 14px;
    margin-top: 2px;
    display: inline-block;
    position: relative;
    flex-shrink: 0;
    background-color: #ffffff;
    transition: all var(--transition-fast);
}

.radio-card input[type="radio"]:checked + .radio-card-content .radio-custom {
    border-color: var(--color-primary);
}

.radio-card input[type="radio"]:checked + .radio-card-content .radio-custom::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 10px;
    height: 10px;
    background-color: var(--color-primary);
    border-radius: 50%;
}

.radio-card-text {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.radio-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--color-text);
}

.radio-desc {
    font-size: 0.8rem;
    color: var(--color-text-muted);
}

/* Checkbox (同意事項) */
.agreement-group {
    background-color: rgba(255, 255, 255, 0.4);
    border-radius: var(--radius-md);
    padding: 20px;
    border: 1px dashed var(--color-input-border);
}

.agreement-list {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.agreement-item {
    display: flex;
    align-items: flex-start;
    cursor: pointer;
}

.agreement-item input[type="checkbox"] {
    position: absolute;
    opacity: 0;
    width: 0;
    height: 0;
}

.checkbox-custom {
    width: 18px;
    height: 18px;
    border: 2px solid var(--color-input-border);
    border-radius: 4px;
    margin-right: 12px;
    margin-top: 4px;
    display: inline-block;
    position: relative;
    flex-shrink: 0;
    background-color: #ffffff;
    transition: all var(--transition-fast);
}

.agreement-item input[type="checkbox"]:checked + .checkbox-custom {
    border-color: var(--color-primary);
    background-color: var(--color-primary);
}

.agreement-item input[type="checkbox"]:checked + .checkbox-custom::after {
    content: '';
    position: absolute;
    top: 1px;
    left: 4px;
    width: 5px;
    height: 9px;
    border: solid #ffffff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.agreement-text {
    font-size: 0.85rem;
    color: var(--color-text);
    user-select: none;
}

/* ---------- Validation Errors ---------- */
.error-text {
    display: none;
    font-size: 0.8rem;
    color: var(--color-error);
    font-weight: 700;
    margin-top: 6px;
    animation: fadeIn var(--transition-fast) forwards;
}

.form-group.error .form-control {
    border-color: var(--color-error);
    background-color: rgba(188, 71, 73, 0.02);
}

.form-group.error .error-text {
    display: block;
}

.form-group.error .checkbox-custom,
.form-group.error .radio-custom {
    border-color: var(--color-error);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-3px); }
    to { opacity: 1; transform: translateY(0); }
}

/* ---------- Buttons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 16px 32px;
    font-size: 1rem;
    font-weight: 800;
    font-family: var(--font-main);
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition-fast);
    outline: none;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: var(--color-text-light);
    box-shadow: var(--shadow-button);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(56, 102, 65, 0.35);
}

.btn-primary:active {
    transform: translateY(0);
}

.btn-primary:disabled {
    background: var(--color-accent);
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-secondary {
    background-color: #ffffff;
    color: var(--color-primary);
    border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
    background-color: rgba(56, 102, 65, 0.05);
    transform: translateY(-1px);
}

/* Spinner for Loading State */
.btn-loading {
    display: flex;
    align-items: center;
    gap: 8px;
}

.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-top-color: #ffffff;
    border-radius: 50%;
    animation: spin 0.8s infinite linear;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.hidden {
    display: none !important;
}

/* ---------- Success Card Style ---------- */
.success-card {
    text-align: center;
    animation: slideUp var(--transition-normal) forwards;
}

.success-icon {
    font-size: 4rem;
    margin-bottom: 20px;
    animation: pop 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275) forwards;
}

.success-title {
    font-size: 1.8rem;
    font-weight: 800;
    color: var(--color-primary-dark);
    margin-bottom: 12px;
}

.success-desc {
    font-size: 1rem;
    color: var(--color-text-muted);
    margin-bottom: 30px;
}

.success-actions {
    max-width: 280px;
    margin: 0 auto;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes pop {
    from { transform: scale(0); }
    to { transform: scale(1); }
}

/* ---------- Footer ---------- */
.footer {
    text-align: center;
    font-size: 0.8rem;
    color: var(--color-text-muted);
    margin-top: 20px;
}

/* ---------- Media Queries (Responsive) ---------- */
@media (max-width: 768px) {
    .container {
        padding: 40px 16px;
        gap: 30px;
    }
    
    .info-card,
    .form-card,
    .success-card {
        padding: 24px 16px;
        border-radius: var(--radius-md);
    }
    
    .hero-title {
        font-size: 1.8rem;
    }
    
    .timeline::before {
        height: 85%;
    }
}