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

* {
    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);
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background-color: var(--cyber-dark);
    padding: 20px;
    border: 1px solid var(--cyber-border);
    border-radius: 4px;
    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: 5px;
    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: 0 0 10px rgba(0, 184, 255, 0.5);
}

.page-title {
    color: var(--cyber-primary);
    font-size: 2em;
    text-transform: uppercase;
    letter-spacing: 3px;
    text-shadow: var(--cyber-glow);
    font-family: 'Orbitron', sans-serif;
    margin: 0;
}

h3 {
    color: var(--cyber-primary);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: 15px;
    font-size: 1.2em;
    text-shadow: var(--cyber-glow);
}

.precision-display {
    display: flex;
    flex-direction: column;
    gap: 15px;
    margin-bottom: 20px;
    border: 1px solid var(--cyber-border);
    padding: 15px;
    background: rgba(26, 26, 26, 0.8);
}

.precision-item {
    display: flex;
    align-items: center;
    gap: 10px;
    position: relative;
}

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

.result {
    padding: 8px 12px;
    background-color: var(--cyber-dark);
    border: 1px solid var(--cyber-border);
    border-radius: 4px;
    min-width: 200px;
    color: var(--cyber-primary);
    font-family: 'Share Tech Mono', monospace;
    position: relative;
    overflow: hidden;
    flex: 1;
    max-width: 400px;
}

.result::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--cyber-primary));
    animation: scan 2s linear infinite;
}

@keyframes scan {
    0% { left: -100%; }
    100% { left: 100%; }
}

input {
    padding: 8px 12px;
    background-color: var(--cyber-dark);
    border: 1px solid var(--cyber-border);
    border-radius: 4px;
    width: 300px;
    color: var(--cyber-text);
    font-family: 'Share Tech Mono', monospace;
}

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

button {
    padding: 8px 16px;
    border: 1px solid var(--cyber-primary);
    border-radius: 4px;
    cursor: pointer;
    background-color: transparent;
    color: var(--cyber-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    font-weight: bold;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

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

button::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;
}

button:hover::before {
    left: 100%;
}

#pauseBtn {
    border-color: var(--cyber-error);
    color: var(--cyber-error);
}

#pauseBtn:hover {
    background-color: var(--cyber-error);
    color: var(--cyber-dark);
}

#refreshBtn {
    border-color: var(--cyber-secondary);
    color: var(--cyber-secondary);
}

#refreshBtn:hover {
    background-color: var(--cyber-secondary);
    color: var(--cyber-dark);
}

.timezone-selector select {
    padding: 8px 12px;
    background-color: var(--cyber-dark);
    border: 1px solid var(--cyber-border);
    border-radius: 4px;
    width: 200px;
    color: var(--cyber-text);
    cursor: pointer;
}

.info-icon {
    color: var(--cyber-secondary);
    cursor: help;
}

.separator {
    color: var(--cyber-secondary);
    font-weight: bold;
}

.multi-line {
    white-space: pre-line;
    line-height: 1.5;
}

.copy-btn {
    padding: 6px 12px;
    font-size: 0.9em;
    border-color: var(--cyber-secondary);
    color: var(--cyber-secondary);
    margin-left: 8px;
}

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

.copy-btn.copied {
    background-color: var(--cyber-primary);
    border-color: var(--cyber-primary);
    color: var(--cyber-dark);
}

.copy-buttons {
    display: flex;
    gap: 8px;
    margin-left: 8px;
}

.input-group {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    flex-wrap: wrap;
}

.result.error {
    color: var(--cyber-error);
}

.copy-btn[data-type="date"] {
    min-width: 60px;
}

.timestamp-result-container {
    display: flex;
    flex-direction: column;
    gap: 10px;
    flex: 1;
}

.copy-buttons {
    display: flex;
    gap: 8px;
    margin-top: 8px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .header-nav {
        flex-direction: column;
        align-items: flex-start;
        gap: 15px;
    }

    .page-title {
        font-size: 1.5em;
    }

    .back-btn {
        font-size: 0.85em;
    }
}