:root {
    --primary: #6366f1;
    --primary-hover: #4f46e5;
    --bg: #0f172a;
    --card-bg: rgba(30, 41, 59, 0.7);
    --text: #f8fafc;
    --text-dim: #94a3b8;
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --accent-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

body {
    background-color: var(--bg);
    color: var(--text);
    min-height: 100vh;
    overflow-x: hidden;
    background-image:
        radial-gradient(circle at 10% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 40%),
        radial-gradient(circle at 90% 80%, rgba(168, 85, 247, 0.15) 0%, transparent 40%);
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

header {
    text-align: center;
    margin-bottom: 3rem;
    animation: fadeInDown 0.8s ease-out;
}

h1 {
    font-size: 2.5rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 0.5rem;
    font-weight: 800;
}

.subtitle {
    color: var(--text-dim);
    font-size: 0.9rem;
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* 添加剪贴板输入区域 */
.add-clip-section {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 1.5rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
    box-shadow: var(--glass-shadow);
    animation: slideInUp 0.5s ease-out;
}

#clip-input {
    width: 100%;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 0.75rem;
    color: var(--text);
    font-size: 1rem;
    font-family: inherit;
    resize: vertical;
    min-height: 80px;
    margin-bottom: 1rem;
    transition: all 0.2s;
}

#clip-input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

#clip-input::placeholder {
    color: #64748b;
}

.btn-add {
    width: 100%;
    padding: 0.8rem;
    background: var(--accent-gradient);
    border: none;
    font-size: 1rem;
    font-weight: 600;
    justify-content: center;
}

.btn-add:hover {
    filter: brightness(1.1);
    transform: scale(1.01);
}

#clips-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.clip-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 1.5rem;
    padding: 1.5rem;
    box-shadow: var(--glass-shadow);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    animation: slideInUp 0.5s ease-out;
    position: relative;
    overflow: hidden;
    cursor: pointer;
}

.clip-card:hover {
    transform: translateY(-5px);
    border-color: rgba(99, 102, 241, 0.4);
    box-shadow: 0 12px 40px 0 rgba(0, 0, 0, 0.45);
}

.clip-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.clip-source {
    font-size: 0.75rem;
    color: var(--text-dim);
    background: rgba(255, 255, 255, 0.05);
    padding: 0.25rem 0.75rem;
    border-radius: 1rem;
    border: 1px solid var(--glass-border);
}

.clip-time {
    font-size: 0.75rem;
    color: var(--text-dim);
}

.clip-content {
    font-size: 1rem;
    line-height: 1.6;
    word-break: break-all;
    white-space: pre-wrap;
    color: #e2e8f0;
}

.clip-footer {
    margin-top: 1rem;
    font-size: 0.75rem;
    color: var(--text-dim);
    text-align: center;
    opacity: 0;
    transition: opacity 0.2s;
}

.clip-card:hover .clip-footer {
    opacity: 1;
}

.btn-delete {
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.3);
    color: #ef4444;
    padding: 0.3rem 0.6rem;
    border-radius: 0.5rem;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
}

.btn-delete:hover {
    background: rgba(239, 68, 68, 0.2);
    border-color: #ef4444;
}

.clip-actions {
    margin-top: 1.5rem;
    display: flex;
    gap: 1rem;
}

.btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    color: var(--text);
    padding: 0.6rem 1.2rem;
    border-radius: 0.75rem;
    cursor: pointer;
    font-size: 0.85rem;
    font-weight: 600;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.btn:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: var(--primary);
}

.btn-copy {
    background: var(--accent-gradient);
    border: none;
}

.btn-copy:hover {
    filter: brightness(1.1);
    transform: scale(1.02);
}

.status-badge {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: #10b981;
    padding: 0.5rem 1rem;
    border-radius: 2rem;
    font-size: 0.8rem;
    backdrop-filter: blur(8px);
    display: flex;
    align-items: center;
    gap: 0.5rem;
    z-index: 100;
}

.status-dot {
    width: 8px;
    height: 8px;
    background: #10b981;
    border-radius: 50%;
    box-shadow: 0 0 10px #10b981;
    animation: pulse 2s infinite;
}

.status-dot.error {
    background: #ef4444;
    box-shadow: 0 0 10px #ef4444;
}

.status-dot.loading {
    background: #f59e0b;
    box-shadow: 0 0 10px #f59e0b;
}

.status-dot.success {
    background: #10b981;
    box-shadow: 0 0 10px #10b981;
}

@keyframes pulse {
    0% {
        transform: scale(1);
        opacity: 1;
    }

    50% {
        transform: scale(1.5);
        opacity: 0.5;
    }

    100% {
        transform: scale(1);
        opacity: 1;
    }
}

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes fadeInDown {
    from {
        opacity: 0;
        transform: translateY(-20px);
    }

    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 加载动画 */
.loading-spinner {
    width: 50px;
    height: 50px;
    border: 3px solid rgba(99, 102, 241, 0.2);
    border-radius: 50%;
    border-top-color: var(--primary);
    animation: spin 1s ease-in-out infinite;
    margin: 0 auto;
}

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

/* 移动端适配 */
@media (max-width: 640px) {
    .container {
        padding: 1rem;
    }

    h1 {
        font-size: 2rem;
    }
}

/* 用户状态栏 */
.user-bar {
    margin-top: 1rem;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
}

#user-info {
    font-size: 0.85rem;
    color: var(--text-dim);
}

.btn-logout {
    background: rgba(239, 68, 68, 0.1);
    border-color: rgba(239, 68, 68, 0.3);
    color: #ef4444;
    padding: 0.4rem 1rem;
    font-size: 0.8rem;
}

.btn-logout:hover {
    background: rgba(239, 68, 68, 0.2);
    border-color: #ef4444;
}

/* 登录区域 */
.login-section {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
    animation: fadeInDown 0.8s ease-out;
}

.login-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 2rem;
    padding: 3rem;
    width: 100%;
    max-width: 400px;
    box-shadow: var(--glass-shadow);
    text-align: center;
}

.login-card h2 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.login-hint {
    color: var(--text-dim);
    font-size: 0.85rem;
    margin-bottom: 2rem;
}

.form-group {
    margin-bottom: 1.5rem;
    text-align: left;
}

.form-group label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-dim);
    margin-bottom: 0.5rem;
}

.form-group input {
    width: 100%;
    padding: 0.8rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: 0.75rem;
    color: var(--text);
    font-size: 1rem;
    transition: all 0.2s;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
}

.form-group input::placeholder {
    color: #64748b;
}

.btn-login,
.btn-register {
    width: 100%;
    padding: 1rem;
    background: var(--accent-gradient);
    border: none;
    font-size: 1rem;
    font-weight: 700;
    justify-content: center;
}

.btn-login:hover,
.btn-register:hover {
    filter: brightness(1.1);
    transform: scale(1.02);
}

.btn-register {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
}

.btn-register:hover {
    background: rgba(99, 102, 241, 0.2);
    border-color: var(--primary);
}

/* 登录/注册 底部交互区 */
.auth-action-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 2rem;
}

.auth-link {
    color: var(--text-dim);
    font-size: 0.9rem;
    text-decoration: underline;
    text-underline-offset: 4px;
    transition: all 0.2s;
}

.auth-link:hover {
    color: var(--primary);
}