/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Microsoft YaHei', 'PingFang SC', 'Helvetica Neue', Arial, sans-serif;
    background: linear-gradient(135deg, #FFF5F5 0%, #FFE5E5 100%);
    min-height: 100vh;
    position: relative;
    overflow-x: hidden;
}

/* 背景装饰 */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 50%, rgba(255, 182, 193, 0.1) 0%, transparent 50%),
        radial-gradient(circle at 80% 80%, rgba(255, 192, 203, 0.08) 0%, transparent 50%),
        radial-gradient(circle at 40% 20%, rgba(255, 182, 193, 0.05) 0%, transparent 50%);
    pointer-events: none;
    z-index: 0;
}

.container {
    position: relative;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
    z-index: 1;
}

/* 查看历史按钮 - 右上角 */
.history-btn {
    position: fixed;
    top: 30px;
    right: 30px;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, #E1BEE7 0%, #F8BBD9 100%);
    border: none;
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(225, 190, 231, 0.4);
    transition: all 0.3s ease;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 24px;
}

.history-btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 6px 20px rgba(225, 190, 231, 0.6);
}

.history-btn:active {
    transform: translateY(-1px);
}

/* 中央主编辑区 */
.main-card {
    background: #FFFBFB;
    border-radius: 20px;
    padding: 40px;
    max-width: 800px;
    width: 100%;
    box-shadow: 0 8px 32px rgba(255, 182, 193, 0.15);
    position: relative;
    animation: fadeIn 0.6s ease-out;
}

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

.card-header {
    margin-bottom: 25px;
}

.title {
    font-size: 28px;
    color: #E91E63;
    font-weight: 500;
    margin-bottom: 10px;
}

.date-display {
    font-size: 14px;
    color: #C97D9E;
    font-style: italic;
}

.editor-container {
    margin-bottom: 25px;
}

.diary-editor {
    width: 100%;
    min-height: 400px;
    padding: 20px;
    border: 2px solid #FFE5E5;
    border-radius: 10px;
    background: #FFFEFE;
    font-size: 16px;
    line-height: 1.8;
    color: #4A4A4A;
    font-family: inherit;
    resize: vertical;
    transition: border-color 0.3s ease;
}

.diary-editor:focus {
    outline: none;
    border-color: #FFB6C1;
    box-shadow: 0 0 0 3px rgba(255, 182, 193, 0.1);
}

.diary-editor::placeholder {
    color: #D4A5A5;
    font-style: italic;
}

.card-footer {
    display: flex;
    justify-content: center;
}

.save-btn {
    background: linear-gradient(135deg, #FFB6C1 0%, #FFC0CB 100%);
    border: none;
    border-radius: 30px;
    padding: 15px 40px;
    font-size: 16px;
    color: white;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 8px;
    box-shadow: 0 4px 15px rgba(255, 182, 193, 0.4);
    transition: all 0.3s ease;
    font-weight: 500;
}

.save-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(255, 182, 193, 0.6);
}

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

.save-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.btn-icon {
    font-size: 18px;
}

/* 提示消息 */
.toast {
    position: absolute;
    top: 20px;
    right: 20px;
    padding: 15px 25px;
    background: rgba(255, 255, 255, 0.95);
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.1);
    opacity: 0;
    transform: translateY(-20px);
    transition: all 0.3s ease;
    pointer-events: none;
    z-index: 1000;
    color: #4A4A4A;
    font-size: 14px;
}

.toast.show {
    opacity: 1;
    transform: translateY(0);
}

.toast.success {
    background: linear-gradient(135deg, #FFE5E5 0%, #FFF5F5 100%);
    border-left: 4px solid #FFB6C1;
}

.toast.error {
    background: #FFE5E5;
    border-left: 4px solid #FF6B6B;
    color: #C44569;
}

/* 漂流瓶按钮 - 右下角 */
.bottle-container {
    position: fixed;
    bottom: 30px;
    right: 30px;
    width: 80px;
    height: 120px;
    cursor: pointer;
    z-index: 1000;
    animation: float 3s ease-in-out infinite;
    transition: transform 0.3s ease;
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-10px);
    }
}

.bottle-container:hover {
    transform: translateY(-5px) scale(1.1);
    animation-play-state: paused;
}

.bottle-container:active {
    transform: translateY(-3px) scale(1.05);
}

.bottle {
    position: relative;
    width: 100%;
    height: 100%;
}

.bottle-neck {
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 25px;
    height: 20px;
    background: #FFC1CC;
    border-radius: 5px 5px 0 0;
    box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.1);
}

.bottle-body {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    width: 60px;
    height: 90px;
    background: linear-gradient(135deg, rgba(179, 229, 252, 0.7) 0%, rgba(144, 202, 249, 0.7) 100%);
    border-radius: 0 0 30px 30px;
    border: 2px solid rgba(255, 255, 255, 0.5);
    box-shadow: 
        0 4px 15px rgba(179, 229, 252, 0.4),
        inset 0 -10px 20px rgba(255, 255, 255, 0.3);
    overflow: hidden;
}

.bubble {
    position: absolute;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 50%;
    animation: bubble-float 3s ease-in-out infinite;
}

.bubble-1 {
    width: 8px;
    height: 8px;
    bottom: 20px;
    left: 15px;
    animation-delay: 0s;
}

.bubble-2 {
    width: 6px;
    height: 6px;
    bottom: 35px;
    right: 15px;
    animation-delay: 1s;
}

.bubble-3 {
    width: 10px;
    height: 10px;
    bottom: 50px;
    left: 25px;
    animation-delay: 2s;
}

@keyframes bubble-float {
    0% {
        transform: translateY(0);
        opacity: 0.6;
    }
    50% {
        transform: translateY(-20px);
        opacity: 1;
    }
    100% {
        transform: translateY(-40px);
        opacity: 0;
    }
}

.bottle-shine {
    position: absolute;
    top: 30px;
    left: 15px;
    width: 20px;
    height: 40px;
    background: linear-gradient(90deg, 
        rgba(255, 255, 255, 0.3) 0%, 
        rgba(255, 255, 255, 0.1) 50%, 
        transparent 100%);
    border-radius: 10px;
    pointer-events: none;
}

/* 闪烁动画 */
@keyframes sparkle {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.2);
    }
}

.bottle-container.sparkle {
    animation: sparkle 0.5s ease-in-out 4;
}

/* 模态框 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(5px);
    animation: fadeIn 0.3s ease;
}

.modal.show {
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background: #FFFBFB;
    padding: 40px;
    border-radius: 20px;
    max-width: 600px;
    width: 90%;
    max-height: 80vh;
    overflow-y: auto;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.2);
    position: relative;
    animation: slideUp 0.3s ease;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.close-btn {
    position: absolute;
    top: 15px;
    right: 20px;
    font-size: 32px;
    color: #C97D9E;
    cursor: pointer;
    transition: color 0.3s ease;
    line-height: 1;
}

.close-btn:hover {
    color: #E91E63;
}

.modal-content h2 {
    color: #E91E63;
    margin-bottom: 25px;
    font-size: 24px;
}

.password-section {
    margin-bottom: 25px;
}

.password-input {
    width: 100%;
    padding: 12px 15px;
    border: 2px solid #FFE5E5;
    border-radius: 10px;
    font-size: 16px;
    margin-bottom: 15px;
    transition: border-color 0.3s ease;
}

.password-input:focus {
    outline: none;
    border-color: #FFB6C1;
    box-shadow: 0 0 0 3px rgba(255, 182, 193, 0.1);
}

.submit-btn {
    width: 100%;
    background: linear-gradient(135deg, #FFB6C1 0%, #FFC0CB 100%);
    border: none;
    border-radius: 10px;
    padding: 12px 20px;
    font-size: 16px;
    color: white;
    cursor: pointer;
    transition: all 0.3s ease;
    font-weight: 500;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 182, 193, 0.4);
}

.history-content {
    margin-top: 25px;
}

.history-item {
    background: #FFFEFE;
    border-left: 4px solid #FFB6C1;
    border-radius: 8px;
    padding: 20px;
    margin-bottom: 15px;
    box-shadow: 0 2px 10px rgba(255, 182, 193, 0.1);
    animation: fadeIn 0.3s ease;
}

.history-item-date {
    font-size: 14px;
    color: #C97D9E;
    margin-bottom: 10px;
    font-weight: 500;
}

.history-item-content {
    font-size: 16px;
    color: #4A4A4A;
    line-height: 1.8;
    white-space: pre-wrap;
}

.no-history {
    text-align: center;
    color: #C97D9E;
    padding: 40px 20px;
    font-size: 16px;
}

/* 树洞模态框特殊样式 */
.treehole-content {
    max-width: 700px;
}

.treehole-editor-container {
    margin-bottom: 25px;
}

.treehole-editor {
    width: 100%;
    min-height: 250px;
    padding: 20px;
    border: 2px solid #FFE5E5;
    border-radius: 10px;
    background: #FFFEFE;
    font-size: 16px;
    line-height: 1.8;
    color: #4A4A4A;
    font-family: inherit;
    resize: vertical;
    transition: border-color 0.3s ease;
}

.treehole-editor:focus {
    outline: none;
    border-color: #FFB6C1;
    box-shadow: 0 0 0 3px rgba(255, 182, 193, 0.1);
}

.treehole-editor::placeholder {
    color: #D4A5A5;
    font-style: italic;
}

.treehole-submit {
    background: linear-gradient(135deg, #B3E5FC 0%, #90CAF9 100%);
}

.treehole-submit:hover {
    box-shadow: 0 4px 15px rgba(179, 229, 252, 0.4);
}

/* 响应式设计 */
@media (max-width: 768px) {
    .main-card {
        padding: 25px;
    }

    .title {
        font-size: 22px;
    }

    .diary-editor {
        min-height: 300px;
        font-size: 14px;
    }

    .bottle-container {
        width: 60px;
        height: 90px;
        bottom: 20px;
        right: 20px;
    }

    .bottle-body {
        width: 45px;
        height: 65px;
    }

    .history-btn {
        top: 20px;
        right: 20px;
        width: 45px;
        height: 45px;
        font-size: 20px;
    }

    .modal-content {
        padding: 25px;
        max-width: 95%;
    }

    .treehole-editor {
        min-height: 200px;
    }
}