/*
 * weisuandi.com v2.0 样式表
 * 现代化设计，流畅动画
 */

/* CSS Variables - 主题配置 */
:root {
    --bg-primary: #0f0f1a;
    --bg-secondary: #1a1a2e;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    --text-primary: #f0f0f0;
    --text-secondary: #888;
    --text-muted: #555;
    --accent: #667eea;
    --accent-secondary: #764ba2;
    --accent-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --border-color: rgba(255, 255, 255, 0.08);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
    --radius: 16px;
    --radius-sm: 10px;
}

/* 亮色主题 */
[data-theme="light"] {
    --bg-primary: #f5f5f7;
    --bg-secondary: #ffffff;
    --bg-card: rgba(0, 0, 0, 0.02);
    --bg-card-hover: rgba(0, 0, 0, 0.04);
    --text-primary: #1a1a1a;
    --text-secondary: #666;
    --text-muted: #999;
    --border-color: rgba(0, 0, 0, 0.08);
    --shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
}

/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: -apple-system, "PingFang SC", "Microsoft YaHei", "Noto Sans SC", sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.6;
    overflow-x: hidden;
}

/* App 容器 */
.app {
    position: relative;
    min-height: 100vh;
}

/* 背景动画 */
.bg-gradient {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: 60vh;
    background: linear-gradient(180deg,
        rgba(102, 126, 234, 0.15) 0%,
        rgba(118, 75, 162, 0.1) 50%,
        transparent 100%
    );
    pointer-events: none;
    z-index: 0;
}

.bg-particles {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    pointer-events: none;
    z-index: 0;
    overflow: hidden;
}

.particle {
    position: absolute;
    width: 4px;
    height: 4px;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    animation: float 20s infinite;
}

@keyframes float {
    0%, 100% {
        transform: translateY(100vh) rotate(0deg);
        opacity: 0;
    }
    10% {
        opacity: 1;
    }
    90% {
        opacity: 1;
    }
    100% {
        transform: translateY(-100vh) rotate(720deg);
        opacity: 0;
    }
}

/* 主容器 */
.container {
    position: relative;
    z-index: 1;
    max-width: 540px;
    margin: 0 auto;
    padding: 20px;
    padding-bottom: 120px;
}

/* 顶部区域 */
.header {
    text-align: center;
    padding: 30px 0 20px;
    position: relative;
}

.location-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 80px;
    height: 80px;
    background: var(--accent-gradient);
    border-radius: 50%;
    margin-bottom: 20px;
    box-shadow: 0 10px 40px rgba(102, 126, 234, 0.3);
    animation: badgeFloat 3s ease-in-out infinite;
}

@keyframes badgeFloat {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.location-emoji {
    font-size: 2.5em;
}

.location-name {
    font-size: 1.8em;
    font-weight: 700;
    margin-bottom: 8px;
    letter-spacing: -0.02em;
}

.location-desc {
    font-size: 0.95em;
    color: var(--text-secondary);
    margin-bottom: 20px;
}

/* 在场指示器 */
.presence-indicator {
    display: inline-flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    padding: 10px 20px;
    border-radius: 30px;
    border: 1px solid var(--border-color);
}

.presence-avatars {
    display: flex;
    gap: -8px;
}

.avatar {
    width: 24px;
    height: 24px;
    background: var(--accent-gradient);
    border-radius: 50%;
    border: 2px solid var(--bg-secondary);
    margin-left: -8px;
}

.avatar:first-child {
    margin-left: 0;
}

.avatar.pulse {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(102, 126, 234, 0.4);
    }
    50% {
        box-shadow: 0 0 0 8px rgba(102, 126, 234, 0);
    }
}

.presence-text {
    font-size: 0.9em;
    color: var(--text-secondary);
}

#presenceCount {
    font-weight: 600;
    color: var(--accent);
}

/* 快捷操作栏 */
.quick-actions {
    display: flex;
    justify-content: center;
    gap: 10px;
    margin: 20px 0;
    flex-wrap: wrap;
}

.action-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
}

.action-btn:hover {
    background: var(--bg-card-hover);
    color: var(--text-primary);
    transform: translateY(-2px);
}

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

/* 留言流 */
.messages {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.message-card {
    background: var(--bg-card);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 16px;
    animation: slideUp 0.4s ease-out;
    transition: all 0.2s ease;
}

.message-card:hover {
    background: var(--bg-card-hover);
    border-color: rgba(255, 255, 255, 0.12);
}

.message-card.new {
    animation: slideUpBounce 0.5s ease-out;
}

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

@keyframes slideUpBounce {
    0% {
        opacity: 0;
        transform: translateY(30px) scale(0.95);
    }
    60% {
        transform: translateY(-5px) scale(1.02);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.message-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}

.message-nickname {
    font-weight: 600;
    font-size: 0.9em;
    display: flex;
    align-items: center;
    gap: 6px;
}

.nickname-badge {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    border-radius: 12px;
    font-size: 0.85em;
}

.message-time {
    font-size: 0.8em;
    color: var(--text-muted);
}

.message-content {
    font-size: 0.95em;
    line-height: 1.7;
    word-break: break-word;
    color: var(--text-primary);
    margin-bottom: 12px;
}

.message-footer {
    display: flex;
    align-items: center;
    gap: 16px;
    padding-top: 10px;
    border-top: 1px solid var(--border-color);
}

.like-btn {
    display: flex;
    align-items: center;
    gap: 6px;
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.85em;
    padding: 4px 8px;
    border-radius: 20px;
    transition: all 0.2s ease;
}

.like-btn:hover {
    background: rgba(239, 68, 68, 0.1);
    color: #ef4444;
}

.like-btn.liked {
    color: #ef4444;
}

.like-btn.liked .heart-icon {
    animation: heartBeat 0.3s ease-in-out;
}

@keyframes heartBeat {
    0% { transform: scale(1); }
    50% { transform: scale(1.3); }
    100% { transform: scale(1); }
}

.like-btn svg {
    transition: all 0.2s ease;
}

.like-btn.liked svg {
    fill: currentColor;
}

/* 404 页面 */
.not-found {
    text-align: center;
    padding: 60px 20px;
    animation: fadeIn 0.5s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.not-found-icon {
    font-size: 5em;
    margin-bottom: 20px;
    animation: float 3s ease-in-out infinite;
}

.not-found h2 {
    font-size: 1.4em;
    margin-bottom: 10px;
}

.not-found p {
    color: var(--text-secondary);
    margin-bottom: 30px;
}

.back-home {
    display: inline-block;
    padding: 14px 28px;
    background: var(--accent-gradient);
    color: white;
    text-decoration: none;
    border-radius: var(--radius-sm);
    font-weight: 500;
    transition: all 0.2s ease;
}

.back-home:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 30px rgba(102, 126, 234, 0.3);
}

/* 空状态 */
.empty-state {
    text-align: center;
    padding: 60px 20px;
}

.empty-icon {
    font-size: 4em;
    margin-bottom: 15px;
    opacity: 0.5;
}

.empty-state h3 {
    font-size: 1.2em;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

.empty-state p {
    font-size: 0.9em;
    color: var(--text-muted);
}

/* 底部输入栏 */
.input-bar {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    padding: 12px 16px;
    padding-bottom: max(12px, env(safe-area-inset-bottom));
    display: flex;
    gap: 10px;
    z-index: 100;
    backdrop-filter: blur(20px);
}

.input-wrapper {
    flex: 1;
    position: relative;
}

#messageInput {
    width: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 12px 16px;
    padding-right: 60px;
    font-size: 1em;
    color: var(--text-primary);
    outline: none;
    resize: none;
    max-height: 120px;
    font-family: inherit;
    transition: all 0.2s ease;
}

#messageInput:focus {
    border-color: var(--accent);
    background: var(--bg-card-hover);
}

#messageInput::placeholder {
    color: var(--text-muted);
}

.char-count {
    position: absolute;
    right: 12px;
    bottom: 10px;
    font-size: 0.75em;
    color: var(--text-muted);
    pointer-events: none;
}

.char-count.warning {
    color: #f59e0b;
}

.char-count.error {
    color: #ef4444;
}

.send-btn {
    width: 48px;
    height: 48px;
    background: var(--accent-gradient);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    flex-shrink: 0;
}

.send-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 5px 20px rgba(102, 126, 234, 0.4);
}

.send-btn:active {
    transform: scale(0.95);
}

.send-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* 加载动画 */
.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-muted);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent);
    border-radius: 50%;
    margin: 0 auto 15px;
    animation: spin 1s linear infinite;
}

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

/* Toast 提示 */
.toast {
    position: fixed;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(20px);
    background: var(--bg-secondary);
    color: var(--text-primary);
    padding: 12px 24px;
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 200;
    font-size: 0.9em;
}

.toast.show {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

/* 昵称颜色类 */
.nick-1 { background: rgba(239, 68, 68, 0.15); color: #f87171; }
.nick-2 { background: rgba(249, 115, 22, 0.15); color: #fb923c; }
.nick-3 { background: rgba(234, 179, 8, 0.15); color: #fbbf24; }
.nick-4 { background: rgba(132, 204, 22, 0.15); color: #a3e635; }
.nick-5 { background: rgba(34, 197, 94, 0.15); color: #4ade80; }
.nick-6 { background: rgba(20, 184, 166, 0.15); color: #2dd4bf; }
.nick-7 { background: rgba(6, 182, 212, 0.15); color: #22d3ee; }
.nick-8 { background: rgba(59, 130, 246, 0.15); color: #60a5fa; }
.nick-9 { background: rgba(99, 102, 241, 0.15); color: #818cf8; }
.nick-10 { background: rgba(139, 92, 246, 0.15); color: #a78bfa; }
.nick-11 { background: rgba(168, 85, 247, 0.15); color: #c084fc; }
.nick-12 { background: rgba(192, 132, 252, 0.15); color: #d8b4fe; }
.nick-13 { background: rgba(217, 70, 239, 0.15); color: #e879f9; }
.nick-14 { background: rgba(219, 39, 119, 0.15); color: #f472b6; }
.nick-15 { background: rgba(244, 63, 94, 0.15); color: #fb7185; }

/* 响应式 */
@media (max-width: 480px) {
    .container {
        padding: 15px;
        padding-bottom: 110px;
    }

    .location-name {
        font-size: 1.5em;
    }

    .location-badge {
        width: 70px;
        height: 70px;
    }

    .location-emoji {
        font-size: 2em;
    }

    .message-card {
        padding: 14px;
    }
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 3px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--text-muted);
}

/* ==================== 拍照门禁页面 ==================== */

.photo-gate {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-primary);
    z-index: 300;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.gate-content {
    text-align: center;
    max-width: 400px;
}

.gate-content .location-badge {
    margin-bottom: 24px;
}

.gate-content .location-name {
    font-size: 2em;
    margin-bottom: 12px;
}

.gate-subtitle {
    color: var(--text-secondary);
    font-size: 1.1em;
    margin-bottom: 40px;
}

.gate-camera-btn {
    width: 120px;
    height: 120px;
    background: var(--accent-gradient);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 30px;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 10px 40px rgba(102, 126, 234, 0.4);
}

.gate-camera-btn:hover {
    transform: scale(1.05);
    box-shadow: 0 15px 50px rgba(102, 126, 234, 0.5);
}

.gate-camera-btn:active {
    transform: scale(0.95);
}

.gate-camera-btn svg {
    color: white;
}

.gate-hint {
    color: var(--text-muted);
    font-size: 0.85em;
}

/* 上传进度 */
.upload-progress {
    display: none;
    flex-direction: column;
    align-items: center;
    gap: 15px;
}

.upload-progress.active {
    display: flex;
}

.progress-ring {
    width: 80px;
    height: 80px;
    position: relative;
}

.progress-ring svg {
    transform: rotate(-90deg);
}

.progress-ring circle {
    fill: none;
    stroke-width: 4;
}

.progress-ring .bg {
    stroke: var(--border-color);
}

.progress-ring .progress {
    stroke: var(--accent);
    stroke-linecap: round;
    transition: stroke-dashoffset 0.3s ease;
}

.progress-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    font-size: 0.9em;
    font-weight: 600;
}

/* ==================== 照片时间线 ==================== */

.photo-timeline {
    background: rgba(0, 0, 0, 0.2);
    border-radius: var(--radius);
    padding: 15px;
    margin-bottom: 20px;
}

.timeline-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
    font-size: 0.9em;
    color: var(--text-secondary);
}

.timeline-hint {
    font-size: 0.8em;
    color: var(--text-muted);
}

.timeline-photos {
    display: flex;
    gap: 10px;
    overflow-x: auto;
    padding-bottom: 5px;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
}

.timeline-photos::-webkit-scrollbar {
    height: 4px;
}

.timeline-photo {
    flex-shrink: 0;
    width: 80px;
    height: 80px;
    border-radius: 8px;
    overflow: hidden;
    cursor: pointer;
    scroll-snap-align: start;
    position: relative;
    background: var(--bg-card);
}

.timeline-photo img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.2s ease;
}

.timeline-photo:hover img {
    transform: scale(1.05);
}

.timeline-photo-time {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
    padding: 15px 5px 5px;
    font-size: 0.7em;
    color: white;
    text-align: center;
}

.timeline-empty {
    width: 100%;
    padding: 20px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9em;
}

/* Lightbox */
.lightbox {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.95);
    z-index: 400;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 20px;
}

.lightbox.active {
    display: flex;
}

.lightbox img {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 44px;
    height: 44px;
    background: rgba(255, 255, 255, 0.1);
    border: none;
    border-radius: 50%;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s ease;
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

/* ==================== 再次访问提示 ==================== */

.revisit-banner {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(10px);
    padding: 12px 16px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    z-index: 200;
    transform: translateY(-100%);
    transition: transform 0.3s ease;
    border-bottom: 1px solid var(--border-color);
}

.revisit-banner.show {
    transform: translateY(0);
}

.revisit-text {
    font-size: 0.9em;
    color: var(--text-primary);
}

.revisit-actions {
    display: flex;
    gap: 10px;
}

.revisit-btn {
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85em;
    cursor: pointer;
    transition: all 0.2s ease;
}

.revisit-btn.photo {
    background: var(--accent-gradient);
    color: white;
    border: none;
}

.revisit-btn.skip {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border-color);
}

.revisit-btn:hover {
    transform: translateY(-1px);
}