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

:root {
    --primary-pink: #FFB6C1;
    --light-pink: #FFC0CB;
    --dark-pink: #FF69B4;
    --lavender: #E6E6FA;
    --cream: #FFF8DC;
    --white: #FFFFFF;
    --text-dark: #4A4A4A;
    --text-light: #777777;
    --shadow: rgba(255, 182, 193, 0.3);
    --shadow-hover: rgba(255, 182, 193, 0.5);
}

body {
    font-family: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    background: linear-gradient(135deg, #FFF0F5 0%, #FFF8DC 50%, #E6E6FA 100%);
    min-height: 100vh;
    color: var(--text-dark);
    line-height: 1.6;
}

.container {
    max-width: 900px;
    margin: 0 auto;
    padding: 20px;
    position: relative;
    z-index: 1;
}

/* 头部样式 */
.header {
    text-align: center;
    padding: 40px 20px;
    background: linear-gradient(135deg, var(--white) 0%, var(--light-pink) 100%);
    border-radius: 30px;
    margin-bottom: 30px;
    box-shadow: 0 10px 40px var(--shadow);
    position: relative;
    overflow: hidden;
}

.header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.3) 0%, transparent 60%);
    animation: shimmer 3s infinite;
}

@keyframes shimmer {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.header-decoration {
    font-size: 1.5em;
    margin: 10px 0;
    opacity: 0.8;
}

.site-title {
    font-size: 2.5em;
    color: var(--dark-pink);
    margin: 15px 0;
    text-shadow: 2px 2px 4px var(--shadow);
    position: relative;
    z-index: 1;
}

.site-subtitle {
    font-size: 1.1em;
    color: var(--text-light);
    position: relative;
    z-index: 1;
}

/* 日历样式 */
.calendar-section {
    background: var(--white);
    border-radius: 25px;
    padding: 25px;
    margin-bottom: 30px;
    box-shadow: 0 8px 30px var(--shadow);
}

.calendar-header {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
}

.calendar-nav {
    background: linear-gradient(135deg, var(--primary-pink), var(--dark-pink));
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    font-size: 1.2em;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px var(--shadow);
}

.calendar-nav:hover {
    transform: scale(1.1);
    box-shadow: 0 6px 20px var(--shadow-hover);
}

.calendar-title {
    font-size: 1.3em;
    font-weight: 600;
    color: var(--text-dark);
}

.calendar-divider {
    margin: 0 10px;
    color: var(--primary-pink);
}

.calendar-weekdays {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
    margin-bottom: 10px;
}

.calendar-weekdays div {
    text-align: center;
    padding: 10px;
    font-weight: 600;
    color: var(--dark-pink);
    font-size: 0.9em;
}

.calendar-weekdays .en {
    font-size: 0.7em;
    color: var(--text-light);
    font-weight: 400;
}

.calendar-days {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 8px;
}

.calendar-day {
    aspect-ratio: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border-radius: 15px;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--cream);
    position: relative;
}

.calendar-day:hover {
    background: var(--light-pink);
    transform: scale(1.05);
}

.calendar-day.empty {
    background: transparent;
    cursor: default;
}

.calendar-day.empty:hover {
    transform: none;
}

.calendar-day.today {
    background: linear-gradient(135deg, var(--primary-pink), var(--dark-pink));
    color: white;
    box-shadow: 0 4px 15px var(--shadow);
}

.calendar-day.has-diary {
    background: linear-gradient(135deg, #E6F3FF, #B8E0FF);
    border: 2px solid #6BB6FF;
}

.calendar-day.has-diary::after {
    content: '📖';
    position: absolute;
    bottom: 2px;
    font-size: 0.7em;
}

.calendar-day-number {
    font-size: 1.1em;
    font-weight: 600;
}

/* 日记列表样式 */
.diary-section {
    background: var(--white);
    border-radius: 25px;
    padding: 25px;
    box-shadow: 0 8px 30px var(--shadow);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 25px;
    padding-bottom: 15px;
    border-bottom: 2px dashed var(--light-pink);
}

.section-header h2 {
    color: var(--dark-pink);
    font-size: 1.5em;
}

.diary-count {
    color: var(--text-light);
    font-size: 0.9em;
}

.diary-list {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.diary-item {
    background: linear-gradient(135deg, var(--white) 0%, var(--lavender) 100%);
    border-radius: 20px;
    padding: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
    border-left: 5px solid var(--primary-pink);
    position: relative;
    overflow: hidden;
}

.diary-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, transparent 0%, rgba(255,255,255,0.5) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.diary-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px var(--shadow-hover);
}

.diary-item:hover::before {
    opacity: 1;
}

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

.diary-date {
    font-weight: 600;
    color: var(--dark-pink);
    font-size: 1.1em;
}

.diary-weekday {
    font-size: 0.85em;
    color: var(--text-light);
}

.diary-title {
    font-size: 1.2em;
    color: var(--text-dark);
    margin-bottom: 8px;
}

.diary-summary {
    color: var(--text-light);
    font-size: 0.95em;
    line-height: 1.5;
}

.diary-meta {
    display: flex;
    gap: 15px;
    margin-top: 12px;
    font-size: 0.8em;
    color: var(--text-light);
}

/* 分页样式 */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 2px dashed var(--light-pink);
}

.page-btn {
    min-width: 40px;
    height: 40px;
    border: 2px solid var(--primary-pink);
    background: var(--white);
    color: var(--dark-pink);
    border-radius: 12px;
    cursor: pointer;
    font-size: 0.95em;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.page-btn:hover:not(:disabled) {
    background: var(--primary-pink);
    color: white;
    transform: scale(1.05);
}

.page-btn.active {
    background: linear-gradient(135deg, var(--primary-pink), var(--dark-pink));
    color: white;
    border-color: var(--dark-pink);
}

.page-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

.page-info {
    color: var(--text-light);
    font-size: 0.9em;
    margin: 0 10px;
}

/* 弹窗样式 */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--white);
    border-radius: 25px;
    max-width: 800px;
    width: 100%;
    max-height: 90vh;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.3);
    animation: modalSlideIn 0.3s ease;
}

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 25px;
    background: linear-gradient(135deg, var(--light-pink), var(--primary-pink));
    border-radius: 25px 25px 0 0;
}

.modal-header h3 {
    color: white;
    font-size: 1.3em;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.1);
}

.modal-close {
    background: rgba(255,255,255,0.3);
    border: none;
    color: white;
    width: 35px;
    height: 35px;
    border-radius: 50%;
    font-size: 1.5em;
    cursor: pointer;
    transition: all 0.3s ease;
}

.modal-close:hover {
    background: rgba(255,255,255,0.5);
    transform: rotate(90deg);
}

.modal-body {
    padding: 25px;
    overflow-y: auto;
    max-height: calc(90vh - 80px);
}

.modal-body h1 {
    color: var(--dark-pink);
    font-size: 1.5em;
    margin-bottom: 20px;
    text-align: center;
    padding-bottom: 15px;
    border-bottom: 2px dashed var(--light-pink);
}

.modal-body h2 {
    color: var(--dark-pink);
    font-size: 1.2em;
    margin: 25px 0 15px;
    padding-left: 15px;
    border-left: 4px solid var(--primary-pink);
}

.modal-body p {
    margin-bottom: 12px;
    line-height: 1.8;
}

.modal-body .diary-meta {
    margin-top: 30px;
    padding-top: 20px;
    border-top: 2px dashed var(--light-pink);
    font-size: 0.9em;
    color: var(--text-light);
    text-align: center;
}

/* 加载状态 */
.loading {
    text-align: center;
    padding: 40px;
    color: var(--text-light);
    font-size: 1.1em;
}

.empty-state {
    text-align: center;
    padding: 50px 20px;
    color: var(--text-light);
}

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

.empty-state-text {
    font-size: 1.1em;
}

/* 页脚样式 */
.footer {
    text-align: center;
    padding: 30px;
    margin-top: 30px;
    color: var(--text-light);
}

.footer p {
    margin: 5px 0;
}

.footer-quote {
    font-style: italic;
    color: var(--primary-pink);
}

/* 背景装饰 */
.bg-decoration {
    position: fixed;
    font-size: 3em;
    opacity: 0.15;
    pointer-events: none;
    z-index: 0;
    animation: float 6s ease-in-out infinite;
}

.bg-1 { top: 10%; left: 5%; animation-delay: 0s; }
.bg-2 { top: 30%; right: 5%; animation-delay: 1s; }
.bg-3 { bottom: 20%; left: 8%; animation-delay: 2s; }
.bg-4 { bottom: 10%; right: 10%; animation-delay: 3s; }

@keyframes float {
    0%, 100% { transform: translateY(0) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(5deg); }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        padding: 10px;
    }

    .header {
        padding: 25px 15px;
        border-radius: 20px;
    }

    .site-title {
        font-size: 1.8em;
    }

    .calendar-section,
    .diary-section {
        padding: 15px;
        border-radius: 20px;
    }

    .calendar-title {
        font-size: 1em;
    }

    .calendar-divider {
        display: block;
        margin: 5px 0;
    }

    .calendar-weekdays div {
        padding: 5px;
        font-size: 0.75em;
    }

    .calendar-day {
        font-size: 0.85em;
    }

    .section-header {
        flex-direction: column;
        gap: 10px;
        text-align: center;
    }

    .diary-item {
        padding: 15px;
    }

    .diary-item-header {
        flex-direction: column;
        gap: 5px;
    }

    .pagination {
        flex-wrap: wrap;
        gap: 5px;
    }

    .page-btn {
        min-width: 35px;
        height: 35px;
        font-size: 0.85em;
    }

    .modal-content {
        border-radius: 20px;
    }

    .modal-body {
        padding: 15px;
    }
}

@media (max-width: 480px) {
    .site-title {
        font-size: 1.5em;
    }

    .calendar-header {
        gap: 10px;
    }

    .calendar-nav {
        width: 35px;
        height: 35px;
    }

    .bg-decoration {
        font-size: 2em;
    }
}