:root {
    --cyber-primary: #00ff9f;
    --cyber-secondary: #00b8ff;
    --cyber-accent: #ff2a6d;
    --cyber-warning: #ffd700;
    --cyber-background: #1a1a1a;
    --cyber-dark: #141414;
    --cyber-border: #2a2a2a;
    --cyber-text: #e0e0e0;
    --cyber-glow: 0 0 10px rgba(0, 255, 159, 0.5);
    --cyber-glow-secondary: 0 0 10px rgba(0, 184, 255, 0.5);
    --cyber-glow-accent: 0 0 10px rgba(255, 42, 109, 0.5);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Rajdhani', 'Orbitron', sans-serif;
    background-color: var(--cyber-background);
    background-image: 
        linear-gradient(45deg, var(--cyber-dark) 25%, transparent 25%),
        linear-gradient(-45deg, var(--cyber-dark) 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, var(--cyber-dark) 75%),
        linear-gradient(-45deg, transparent 75%, var(--cyber-dark) 75%);
    background-size: 20px 20px;
    padding: 20px;
    color: var(--cyber-text);
    min-height: 100vh;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    background-color: var(--cyber-dark);
    padding: 30px;
    border: 1px solid var(--cyber-border);
    border-radius: 8px;
    box-shadow: 0 0 20px rgba(0, 255, 159, 0.1);
    position: relative;
}

.container::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--cyber-primary), var(--cyber-secondary));
    z-index: -1;
    border-radius: 10px;
    opacity: 0.3;
}

/* 头部导航 */
.header-nav {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 1px solid var(--cyber-border);
}

.back-btn {
    padding: 10px 20px;
    background-color: transparent;
    border: 1px solid var(--cyber-secondary);
    color: var(--cyber-secondary);
    text-decoration: none;
    border-radius: 4px;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: bold;
    transition: all 0.3s ease;
    font-size: 0.9em;
}

.back-btn:hover {
    background-color: var(--cyber-secondary);
    color: var(--cyber-dark);
    box-shadow: var(--cyber-glow-secondary);
}

.page-title {
    color: var(--cyber-primary);
    font-size: 2.5em;
    text-transform: uppercase;
    letter-spacing: 3px;
    text-shadow: var(--cyber-glow);
    font-family: 'Orbitron', sans-serif;
}

/* 当前时间显示 */
.current-time-section {
    margin-bottom: 25px;
    padding: 20px;
    background-color: rgba(26, 26, 26, 0.8);
    border: 1px solid var(--cyber-border);
    border-radius: 6px;
    text-align: center;
}

.time-label {
    color: var(--cyber-secondary);
    font-size: 0.9em;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.current-datetime {
    color: var(--cyber-primary);
    font-size: 2em;
    font-family: 'Orbitron', monospace;
    margin-bottom: 5px;
    text-shadow: var(--cyber-glow);
}

.current-week {
    color: var(--cyber-text);
    font-size: 1.2em;
}

/* 功能Tab */
.function-tabs {
    display: flex;
    gap: 15px;
    margin-bottom: 25px;
}

.function-tab-btn {
    flex: 1;
    padding: 15px 20px;
    background-color: rgba(26, 26, 26, 0.8);
    border: 1px solid var(--cyber-border);
    color: var(--cyber-text);
    cursor: pointer;
    border-radius: 6px;
    text-transform: uppercase;
    letter-spacing: 2px;
    font-weight: bold;
    font-size: 1em;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.function-tab-btn:hover {
    border-color: var(--cyber-secondary);
    transform: translateY(-2px);
}

.function-tab-btn.active {
    background-color: var(--cyber-primary);
    border-color: var(--cyber-primary);
    color: var(--cyber-dark);
    box-shadow: var(--cyber-glow);
}

.tab-icon {
    font-size: 1.3em;
}

.function-tab-content {
    display: none;
}

.function-tab-content.active {
    display: block;
}

/* 卡片区域 */
.section-card {
    background-color: rgba(26, 26, 26, 0.8);
    border: 1px solid var(--cyber-border);
    border-radius: 6px;
    padding: 25px;
    margin-bottom: 25px;
}

.section-title {
    color: var(--cyber-primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 20px;
    font-size: 1.2em;
    text-shadow: var(--cyber-glow);
    display: flex;
    align-items: center;
    gap: 10px;
}

.title-icon {
    font-size: 1.3em;
}

/* 日期输入组 */
.date-input-group {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.date-input-item {
    flex: 1;
    min-width: 280px;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.input-label {
    color: var(--cyber-secondary);
    font-weight: bold;
    font-size: 0.95em;
}

.date-input,
.time-input,
.text-input {
    padding: 12px 15px;
    background-color: var(--cyber-dark);
    border: 1px solid var(--cyber-border);
    border-radius: 4px;
    color: var(--cyber-primary);
    font-family: 'Share Tech Mono', monospace;
    font-size: 1em;
    transition: all 0.3s ease;
}

.date-input:focus,
.time-input:focus,
.text-input:focus {
    outline: none;
    border-color: var(--cyber-primary);
    box-shadow: var(--cyber-glow);
}

.time-input {
    width: 120px;
}

.date-separator {
    font-size: 2em;
    color: var(--cyber-secondary);
    align-self: center;
    margin-top: 20px;
}

/* 按钮组 */
.button-group {
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 25px;
}

.btn {
    padding: 12px 24px;
    border: 1px solid;
    border-radius: 4px;
    cursor: pointer;
    background-color: transparent;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: bold;
    font-size: 0.95em;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.btn-icon {
    font-size: 1.2em;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    border-color: var(--cyber-primary);
    color: var(--cyber-primary);
    position: relative;
    overflow: hidden;
}

.btn-primary:hover {
    background-color: var(--cyber-primary);
    color: var(--cyber-dark);
    box-shadow: var(--cyber-glow);
}

.btn-secondary {
    border-color: var(--cyber-secondary);
    color: var(--cyber-secondary);
    position: relative;
    overflow: hidden;
}

.btn-secondary:hover {
    background-color: var(--cyber-secondary);
    color: var(--cyber-dark);
    box-shadow: var(--cyber-glow-secondary);
}

.btn-accent {
    border-color: var(--cyber-accent);
    color: var(--cyber-accent);
    position: relative;
    overflow: hidden;
}

.btn-accent:hover {
    background-color: var(--cyber-accent);
    color: var(--cyber-dark);
    box-shadow: var(--cyber-glow-accent);
}

.btn-mini {
    padding: 6px 12px;
    background-color: transparent;
    border: 1px solid var(--cyber-secondary);
    color: var(--cyber-secondary);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85em;
    font-weight: bold;
    transition: all 0.3s ease;
}

.btn-mini:hover {
    background-color: var(--cyber-secondary);
    color: var(--cyber-dark);
}

/* 结果面板 */
.result-panel {
    padding: 25px;
    background-color: rgba(20, 20, 20, 0.8);
    border: 2px solid var(--cyber-primary);
    border-radius: 6px;
    animation: fadeIn 0.5s ease;
}

.result-panel.hidden {
    display: none;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 15px;
    border-bottom: 1px solid var(--cyber-border);
}

.result-header h4 {
    color: var(--cyber-primary);
    font-size: 1.3em;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.result-direction {
    padding: 5px 12px;
    background-color: rgba(0, 184, 255, 0.2);
    border: 1px solid var(--cyber-secondary);
    border-radius: 4px;
    color: var(--cyber-secondary);
    font-size: 0.9em;
    font-weight: bold;
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 15px;
    margin-bottom: 20px;
}

.result-item {
    text-align: center;
    padding: 20px;
    background-color: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--cyber-border);
    border-radius: 6px;
    transition: all 0.3s ease;
}

.result-item:hover {
    border-color: var(--cyber-secondary);
    transform: translateY(-3px);
}

.result-item.highlight {
    border-color: var(--cyber-primary);
    background-color: rgba(0, 255, 159, 0.05);
}

.result-value {
    color: var(--cyber-primary);
    font-size: 2.5em;
    font-family: 'Orbitron', monospace;
    font-weight: bold;
    margin-bottom: 5px;
}

.result-label {
    color: var(--cyber-secondary);
    font-size: 0.9em;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.result-detail {
    display: flex;
    flex-direction: column;
    gap: 10px;
    padding: 15px;
    background-color: rgba(0, 0, 0, 0.3);
    border-radius: 4px;
}

.detail-item {
    display: flex;
    gap: 15px;
    align-items: center;
    flex-wrap: wrap;
}

.detail-label {
    color: var(--cyber-secondary);
    font-weight: bold;
    min-width: 60px;
}

.detail-value {
    color: var(--cyber-primary);
    font-family: 'Share Tech Mono', monospace;
}

/* 倒计时显示 */
.countdown-display {
    padding: 30px;
    background: linear-gradient(135deg, rgba(0, 255, 159, 0.1), rgba(0, 184, 255, 0.1));
    border: 2px solid var(--cyber-primary);
    border-radius: 8px;
    margin-bottom: 25px;
    animation: fadeIn 0.5s ease;
}

.countdown-display.hidden {
    display: none;
}

.countdown-header {
    text-align: center;
    margin-bottom: 20px;
}

.countdown-header h4 {
    color: var(--cyber-primary);
    font-size: 1.8em;
    margin-bottom: 10px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.countdown-status {
    display: inline-block;
    padding: 5px 15px;
    background-color: rgba(0, 255, 159, 0.2);
    border: 1px solid var(--cyber-primary);
    border-radius: 20px;
    color: var(--cyber-primary);
    font-size: 0.9em;
    font-weight: bold;
}

.countdown-timer {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

.timer-item {
    text-align: center;
    padding: 15px 20px;
    background-color: rgba(0, 0, 0, 0.4);
    border: 1px solid var(--cyber-border);
    border-radius: 8px;
    min-width: 100px;
}

.timer-value {
    color: var(--cyber-primary);
    font-size: 3em;
    font-family: 'Orbitron', monospace;
    font-weight: bold;
    line-height: 1;
    margin-bottom: 5px;
}

.timer-label {
    color: var(--cyber-secondary);
    font-size: 0.9em;
    text-transform: uppercase;
}

.timer-separator {
    color: var(--cyber-primary);
    font-size: 2em;
    font-weight: bold;
}

.countdown-info {
    text-align: center;
    padding: 15px;
    background-color: rgba(0, 0, 0, 0.3);
    border-radius: 6px;
}

.countdown-info p {
    color: var(--cyber-text);
    font-size: 1.1em;
    line-height: 1.6;
}

/* 事件列表 */
.events-section {
    margin-top: 25px;
}

.events-title {
    color: var(--cyber-secondary);
    font-size: 1.1em;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.events-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.no-events {
    text-align: center;
    padding: 30px;
    color: #666;
    font-style: italic;
}

.event-item {
    padding: 15px 20px;
    background-color: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--cyber-border);
    border-left: 3px solid var(--cyber-secondary);
    border-radius: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all 0.3s ease;
}

.event-item:hover {
    border-left-color: var(--cyber-primary);
    transform: translateX(5px);
}

.event-info {
    flex: 1;
}

.event-name {
    color: var(--cyber-primary);
    font-weight: bold;
    font-size: 1.1em;
    margin-bottom: 5px;
}

.event-date {
    color: var(--cyber-text);
    font-family: 'Share Tech Mono', monospace;
    font-size: 0.9em;
}

.event-countdown {
    text-align: right;
    margin-right: 15px;
}

.event-days {
    color: var(--cyber-primary);
    font-size: 1.5em;
    font-weight: bold;
    font-family: 'Orbitron', monospace;
}

.event-label {
    color: var(--cyber-secondary);
    font-size: 0.85em;
}

.event-actions {
    display: flex;
    gap: 8px;
}

.event-btn {
    padding: 6px 12px;
    background-color: transparent;
    border: 1px solid var(--cyber-border);
    color: var(--cyber-text);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.85em;
    transition: all 0.3s ease;
}

.event-btn:hover {
    border-color: var(--cyber-accent);
    color: var(--cyber-accent);
}

/* 快捷日期 */
.quick-dates-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: 12px;
}

.quick-date-btn {
    padding: 12px 16px;
    background-color: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--cyber-border);
    color: var(--cyber-text);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.95em;
    font-weight: 500;
    transition: all 0.3s ease;
}

.quick-date-btn:hover {
    border-color: var(--cyber-primary);
    color: var(--cyber-primary);
    transform: translateY(-2px);
    box-shadow: var(--cyber-glow);
}

/* 日期加减计算 */
.calc-input-group {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 20px;
}

.input-row {
    display: flex;
    align-items: center;
    gap: 15px;
    flex-wrap: wrap;
}

.calc-operation {
    text-align: center;
    padding: 15px;
}

.operation-select {
    padding: 12px 20px;
    background-color: var(--cyber-dark);
    border: 2px solid var(--cyber-primary);
    border-radius: 6px;
    color: var(--cyber-primary);
    font-size: 1.2em;
    font-weight: bold;
    cursor: pointer;
    text-align: center;
}

.calc-values {
    display: flex;
    justify-content: center;
    gap: 30px;
    flex-wrap: wrap;
}

.value-input {
    display: flex;
    align-items: center;
    gap: 10px;
}

.number-input {
    width: 100px;
    padding: 12px;
    background-color: var(--cyber-dark);
    border: 1px solid var(--cyber-border);
    border-radius: 4px;
    color: var(--cyber-primary);
    font-size: 1.5em;
    font-family: 'Orbitron', monospace;
    text-align: center;
    transition: all 0.3s ease;
}

.number-input:focus {
    outline: none;
    border-color: var(--cyber-primary);
    box-shadow: var(--cyber-glow);
}

.unit-label {
    color: var(--cyber-secondary);
    font-size: 1.2em;
    font-weight: bold;
}

.calc-result {
    padding: 30px;
    background: linear-gradient(135deg, rgba(0, 255, 159, 0.1), rgba(0, 184, 255, 0.1));
    border: 2px solid var(--cyber-primary);
    border-radius: 8px;
    text-align: center;
    animation: fadeIn 0.5s ease;
}

.calc-result.hidden {
    display: none;
}

.result-date-main {
    color: var(--cyber-primary);
    font-size: 3em;
    font-family: 'Orbitron', monospace;
    font-weight: bold;
    margin-bottom: 10px;
    text-shadow: var(--cyber-glow);
}

.result-date-week {
    color: var(--cyber-secondary);
    font-size: 1.3em;
    margin-bottom: 20px;
}

.result-formula {
    padding: 15px;
    background-color: rgba(0, 0, 0, 0.3);
    border-radius: 6px;
    color: var(--cyber-text);
    font-family: 'Share Tech Mono', monospace;
}

.quick-calc-section {
    margin-top: 25px;
}

.section-subtitle {
    color: var(--cyber-secondary);
    font-size: 1.1em;
    margin-bottom: 15px;
    text-transform: uppercase;
    letter-spacing: 2px;
}

.quick-calc-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 12px;
}

.quick-calc-btn {
    padding: 12px 16px;
    background-color: rgba(0, 0, 0, 0.3);
    border: 1px solid var(--cyber-border);
    color: var(--cyber-text);
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.95em;
    font-weight: 500;
    transition: all 0.3s ease;
}

.quick-calc-btn:hover {
    border-color: var(--cyber-secondary);
    color: var(--cyber-secondary);
    transform: translateY(-2px);
}

/* 响应式设计 */
@media (max-width: 1024px) {
    .date-input-group {
        flex-direction: column;
    }

    .date-separator {
        transform: rotate(90deg);
        margin: 0;
    }

    .countdown-timer {
        flex-wrap: wrap;
    }

    .timer-item {
        min-width: 80px;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

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

    .header-nav {
        flex-direction: column;
        align-items: flex-start;
    }

    .function-tabs {
        flex-direction: column;
    }

    .button-group {
        flex-direction: column;
    }

    .btn {
        width: 100%;
        justify-content: center;
    }

    .result-grid {
        grid-template-columns: 1fr 1fr;
    }

    .timer-item {
        padding: 10px;
        min-width: 60px;
    }

    .timer-value {
        font-size: 2em;
    }

    .calc-values {
        flex-direction: column;
        gap: 15px;
    }

    .event-item {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .event-countdown {
        text-align: center;
        margin: 0;
    }
}