@font-face {
  font-display: swap;
  font-family: 'Noto Sans SC';
  font-style: normal;
  font-weight: 400;
  src: url('/assets/fonts/noto-sans-sc-400.woff2') format('woff2');
}
@font-face {
  font-display: swap;
  font-family: 'Noto Sans SC';
  font-style: normal;
  font-weight: 500;
  src: url('/assets/fonts/noto-sans-sc-500.woff2') format('woff2');
}
@font-face {
  font-display: swap;
  font-family: 'Noto Sans SC';
  font-style: normal;
  font-weight: 700;
  src: url('/assets/fonts/noto-sans-sc-700.woff2') format('woff2');
}

:root {
    --primary-color: #4A90E2;
    --primary-dark: #357ABD;
    --primary-light: #eaf2fc;
    --success-color: #28a745;
    --error-color: #d9534f;
    --white-color: #ffffff;
    --bg-color: #f7f8fc;
    --text-color: #2c3e50;
    --text-secondary-color: #8492a6;
    --border-color: #e0e6ed;
    --card-shadow: 0 10px 40px rgba(44, 62, 80, 0.1);
    --border-radius-lg: 24px;
    --border-radius-md: 12px;
}

*, *::before, *::after {
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans SC', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.5;
    margin: 0;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

.page-container {
    width: 100%;
}

.page-wrapper {
    width: 100%;
    max-width: 1000px;
    margin: 0 auto;
    background-color: var(--white-color);
    display: grid;
    grid-template-columns: 1fr;
    animation: fadeIn 0.8s ease-out backwards;
}

.brand-container {
    position: relative;
    background: linear-gradient(160deg, var(--primary-color) 0%, #3dd5b9 100%);
    color: var(--white-color);
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem 1.5rem;
    text-align: center;
    overflow: hidden;
}
.brand-container::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 300px;
    height: 300px;
    background: linear-gradient(45deg, rgba(255,255,255,0.15), rgba(255,255,255,0));
    border-radius: 45%;
    transform: translate(-50%, -50%);
    animation: rotate-bg 20s linear infinite;
}

.brand-content {
    position: relative;
    z-index: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.hero-illustration {
    width: 120px;
    height: 120px;
    margin-bottom: 1rem;
    animation: float 4s ease-in-out infinite;
}

.brand-title {
    font-size: clamp(1.6rem, 5vw, 2.2rem);
    font-weight: 700;
    margin: 0 0 0.5rem;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}
.brand-subtitle {
    font-size: clamp(0.9rem, 2.5vw, 1rem);
    opacity: 0.9;
    margin: 0;
    max-width: 350px;
}

.brand-socials {
    display: none;
    gap: 1.5rem;
    margin-top: 2.5rem;
}
.brand-social-icon {
    position: relative;
    display: flex;
    justify-content: center;
    align-items: center;
    width: 44px;
    height: 44px;
    background-color: rgba(255, 255, 255, 0.15);
    border-radius: 50%;
    transition: all 0.2s ease;
}
.brand-social-icon:hover {
    background-color: rgba(255, 255, 255, 0.25);
    transform: scale(1.1);
}
.brand-social-icon svg {
    width: 24px;
    height: 24px;
    opacity: 0.9;
}
.brand-social-icon::before, .brand-social-icon::after {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, transform 0.2s ease;
    pointer-events: none;
}
.brand-social-icon::before {
    content: attr(data-qr-title);
    bottom: 130%; 
    background-color: var(--text-color);
    color: var(--white-color);
    padding: 8px 12px;
    border-radius: var(--border-radius-md);
    white-space: nowrap;
    font-size: 0.85rem;
    line-height: 1.2;
    background-image: var(--qr-code-url);
    background-size: 120px 120px;
    background-repeat: no-repeat;
    background-position: center 35px;
    width: 140px;
    height: 165px;
    text-align: center;
    display: flex;
    align-items: flex-start;
    justify-content: center;
}
.brand-social-icon::after {
    content: '';
    bottom: calc(130% - 10px);
    border: 5px solid transparent;
    border-top-color: var(--text-color);
}
.brand-social-icon:hover::before, .brand-social-icon:hover::after {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-5px);
}
.brand-social-icon[data-qr-image="/assets/images/weixin_qr.png"]::before { --qr-code-url: url('/assets/images/weixin_qr.png'); }
.brand-social-icon[data-qr-image="/assets/images/qq_qr.png"]::before { --qr-code-url: url('/assets/images/qq_qr.png'); }
.brand-social-icon[data-qr-image="/assets/images/xcx.png"]::before { --qr-code-url: url('/assets/images/xcx.png'); }


.form-container {
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 2rem;
}
form, #resultContainer, .footer {
    width: 100%;
    max-width: 450px;
    margin-left: auto;
    margin-right: auto;
}

.form-group {
    margin-bottom: 1.25rem;
}
label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--text-color);
}
input[type="text"], input[type="email"], input[type="date"] {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    transition: all 0.25s ease;
}
input[type="text"]:focus, input[type="email"]:focus, input[type="date"]:focus {
    border-color: var(--primary-color);
    outline: 0;
    box-shadow: 0 0 0 3px var(--primary-light);
}
.input-tip {
    margin-top: 0.5rem;
    font-size: 0.8em;
    color: var(--text-secondary-color);
}
.input-tip a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}
.input-tip a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.radio-group-wrapper {
    padding: 0;
    background-color: transparent;
}
.radio-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
}
.radio-group input[type="radio"] {
    display: none;
}
.radio-group label {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 100%;
    padding: 0.65rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    font-weight: 500;
    font-size: 0.9rem;
    background-color: var(--bg-color);
    color: var(--text-secondary-color);
}
.radio-group label:hover {
    border-color: var(--primary-color);
    color: var(--primary-dark);
}
.radio-group input[type="radio"]:checked + label {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: var(--white-color);
    font-weight: 700;
    transform: translateY(-2px);
    box-shadow: 0 5px 12px rgba(74, 144, 226, 0.25);
}
.full-width-radio {
    grid-column: 1 / -1;
}
.full-width-radio label {
    width: 100%;
}
#customExpiryDateContainer {
    margin-top: 0.75rem;
    max-height: 0;
    opacity: 0;
    overflow: hidden;
    transition: all 0.4s ease;
}
#customExpiryDateContainer.show {
    max-height: 100px;
    opacity: 1;
}

.submit-button {
    width: 100%;
    padding: 0.8rem 1rem;
    background-image: linear-gradient(45deg, var(--success-color) 0%, #22c55e 100%);
    color: white;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 700;
    transition: all 0.3s ease;
    box-shadow: 0 4px 12px rgba(40, 167, 69, 0.2);
    margin-top: 0.75rem;
}
.submit-button:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 15px rgba(40, 167, 69, 0.3);
}

.footer {
    margin-top: 2rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
    text-align: center;
}
.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.75rem;
}
.footer-links a {
    color: var(--text-secondary-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s ease;
    font-size: 0.9rem;
}
.footer-links a:hover {
    color: var(--primary-color);
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}
@keyframes popIn {
    from { transform: scale(0.95); opacity: 0; }
    to { transform: scale(1); opacity: 1; }
}
@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-15px); }
}
@keyframes rotate-bg {
    from { transform: translate(-50%, -50%) rotate(0deg); }
    to { transform: translate(-50%, -50%) rotate(360deg); }
}

.flatpickr-calendar { background: var(--white-color); border-radius: var(--border-radius-md); border: 1px solid var(--border-color); box-shadow: 0 8px 20px rgba(0,0,0,0.1); font-family: 'Noto Sans SC', sans-serif; }
.flatpickr-months .flatpickr-prev-month, .flatpickr-months .flatpickr-next-month { color: var(--primary-color); fill: var(--primary-color); }
.flatpickr-months .flatpickr-prev-month:hover, .flatpickr-months .flatpickr-next-month:hover { color: var(--primary-dark); fill: var(--primary-dark); }
.flatpickr-day { color: var(--text-color); border-radius: 50%; transition: all 0.2s ease; }
.flatpickr-day:hover, .flatpickr-day:focus { background: var(--primary-light); color: var(--primary-dark); border-color: transparent; }
.flatpickr-day.today { border-color: var(--primary-color); color: var(--primary-color); font-weight: bold; }
.flatpickr-day.selected, .flatpickr-day.startRange, .flatpickr-day.endRange { background: var(--primary-color); color: var(--white-color); border-color: var(--primary-color); }
.flatpickr-day.disabled { color: #c0c4cc; }
input.flatpickr-input { caret-color: var(--primary-color); }
#resultContainer { margin-top: 2rem; animation: popIn 0.5s ease backwards; }
.result-card { border-radius: var(--border-radius-md); padding: 1.5rem; text-align: center; border: 1px solid var(--border-color); }
.result-card.success { background-color: #f0fff4; border-color: #b7e4c7; }
.result-card.error { background-color: #fff1f0; border-color: #ffccc7; color: var(--error-color); }
.result-card h3 { margin: 0 0 1rem; font-size: 1.25em; }
.result-card.success h3 { color: #2d6a4f; }
.result-card.error h3 { color: var(--error-color); }
.result-card .access-code-box { background-color: var(--primary-light); border: 2px dashed var(--primary-color); border-radius: 8px; padding: 1rem; margin-bottom: 1.5rem; cursor: pointer; position: relative; transition: background-color 0.3s; }
.result-card .access-code-box:hover { background-color: #dce9f9; }
.result-card .access-code-display { font-family: 'SF Mono', 'Consolas', monospace; font-size: 1.2em; font-weight: 700; color: var(--primary-color); word-break: break-all; }
.copy-hint { display: block; font-size: 0.75em; color: var(--text-secondary-color); margin-top: 6px; }
.copy-feedback { position: absolute; bottom: -25px; left: 50%; transform: translateX(-50%); background-color: var(--text-color); color: var(--white-color); padding: 4px 8px; border-radius: 4px; font-size: 0.75em; opacity: 0; transition: opacity 0.3s ease; white-space: nowrap; }
.copy-feedback.show { opacity: 1; }
.details-divider { margin: 1.5rem 0 1.25rem; text-align: center; color: var(--text-secondary-color); font-size: 0.8em; display: flex; align-items: center; }
.details-divider::before, .details-divider::after { content: ''; flex-grow: 1; height: 1px; background: var(--border-color); }
.details-divider::before { margin-right: 10px; }
.details-divider::after { margin-left: 10px; }
.details-grid { display: grid; grid-template-columns: 1fr; gap: 0.75rem; text-align: left; }
.detail-item { display: flex; justify-content: space-between; align-items: center; padding-bottom: 0.75rem; border-bottom: 1px solid #f1f3f5; font-size: 0.9em; }
.detail-item:last-child { border-bottom: none; }
.detail-item .label { color: var(--text-secondary-color); }
.detail-item .value { font-weight: 500; word-break: break-all; text-align: right; padding-left: 10px; }
.value.highlight { color: var(--primary-color); font-weight: 700; }
.frozen-warning { padding: 1rem; background-color: #fffbe6; border: 1px solid #ffe58f; border-radius: var(--border-radius-md); color: #d46b08; margin-bottom: 1.5rem; font-size: 0.9em; }
.qr-code-popup { display: none; position: fixed; z-index: 1000; left: 0; top: 0; width: 100%; height: 100%; background-color: rgba(0,0,0,0.6); backdrop-filter: blur(5px); justify-content: center; align-items: center; animation: fadeIn 0.3s ease; }
.qr-code-popup.show { display: flex; }
.qr-code-content { background-color: var(--white-color); padding: 1.5rem; border-radius: var(--border-radius-md); box-shadow: 0 10px 30px rgba(0,0,0,0.2); text-align: center; position: relative; animation: popIn 0.3s ease; width: 75%; max-width: 280px; }
.qr-code-content img { width: 100%; height: auto; display: block; margin: 0 auto 1rem; border-radius: 8px; }
.qr-code-content h4 { margin: 0 0 0.5rem 0; color: var(--text-color); font-size: 1.1em; }
.qr-code-content p { margin: 0; color: var(--text-secondary-color); font-size: 0.9em; }
.close-button { position: absolute; top: 8px; right: 8px; width: 28px; height: 28px; line-height: 28px; font-size: 22px; font-weight: bold; color: #aaa; cursor: pointer; transition: transform 0.2s ease, color 0.2s ease; border: none; background: none; }
.close-button:hover { color: var(--text-color); transform: rotate(90deg); }

.fab-container {
    position: fixed;
    z-index: 999;
    cursor: grab;
    user-select: none;
    left: var(--fab-x, calc(100% - 56px - 20px));
    top: var(--fab-y, 50%); 
    transform: translateY(-50%); 
    transition: left 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.fab-container:active {
    cursor: grabbing;
    transition: none;
}
.fab-container.open .fab-main-button {
    transform: rotate(135deg);
}
.fab-container.open .fab-options {
    opacity: 1;
    visibility: visible;
    transform: scale(1) translateY(0);
}
.fab-main-button {
    width: 56px;
    height: 56px;
    background-color: var(--primary-color);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
    transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
    position: relative;
    z-index: 1;
}
.fab-main-button svg {
    width: 28px;
    height: 28px;
    color: var(--white-color);
}
.fab-options {
    position: absolute;
    left: 0;
    right: 0;
    margin: 0 auto;
    width: 48px; /* 与.fab-option的宽度一致 */
    transform: scale(0.8);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    opacity: 0;
    visibility: hidden;
    transition: all 0.2s ease-out;
}
.fab-options.expand-up {
    bottom: 100%;
    padding-bottom: 12px;
    transform-origin: bottom center;
}
.fab-options.expand-down {
    top: 100%;
    padding-top: 12px;
    transform-origin: top center;
}
.fab-option {
    width: 48px;
    height: 48px;
    background-color: var(--white-color);
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    box-shadow: 0 2px 8px rgba(0,0,0,0.15);
    transition: all 0.2s ease;
    cursor: pointer;
    flex-shrink: 0;
}
.fab-option:hover {
    transform: scale(1.1);
    background-color: var(--primary-light);
}
.fab-option svg {
    width: 28px;
    height: 28px;
}

@media (min-width: 992px) {
    .page-container {
        display: flex;
        justify-content: center;
        align-items: center;
        min-height: 100vh;
        padding: 2rem;
        /* ✅ 新增：允许父容器在内容超高时出现滚动条 */
        overflow-y: auto; 
    }
    .page-wrapper {
        display: flex;
        flex-direction: row;
        margin: 0;
        height: auto;
        /* ❌ 删除这一行：不再限制最大高度，让其自适应内容 */
        /* max-height: 90vh; */
        border-radius: var(--border-radius-lg);
        box-shadow: var(--card-shadow);
        
        /* ✅ 新增：确保在某些浏览器下最小高度不会被压缩 */
        min-height: 1px;
    }
    .brand-container {
        flex: 0 0 40%;
        max-width: 400px;
        border-radius: var(--border-radius-lg) 0 0 var(--border-radius-lg);
        padding: 3rem;
    }
    .brand-socials {
        display: flex;
    }
    .hero-illustration {
        width: 160px;
        height: 160px;
    }
    .form-container {
        flex: 1 1 60%;
        padding: 2.5rem;
        /* ❌ 删除这一行：将滚动能力交给更上层的容器 */
        /* overflow-y: auto; */
    }
    .fab-container {
        display: none;
    }
}

@media (max-width: 991px) {
    .page-container {
        padding: 0;
    }
    .page-wrapper {
        border-radius: 0;
        box-shadow: none;
    }
    .brand-container {
        border-radius: 0;
    }
}