:root {
    --primary-color: #3b82f6;
    --secondary-color: #60a5fa;
    --text-color: #1f2937;
    --card-background: rgba(255, 255, 255, 0.95);
    --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
    --background-light: linear-gradient(-45deg, #e6f2ff, #fff0f5, #f0f7ff, #fff5e6);
    --background-dark: linear-gradient(-45deg, #1a202c, #2d3748, #4a5568, #2d3748);
    --success-color: #4CAF50;
    --warning-color: #ffeb3b;
    --error-color: #f44336;
}

.dark-mode {
    --primary-color: #60a5fa;
    --secondary-color: #3b82f6;
    --text-color: #e2e8f0;
    --card-background: rgba(26, 32, 44, 0.9);
}

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

body {
    font-family: 'HarmonyOS Sans SC', sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: var(--background-light);
    background-size: 400% 400%;
    animation: gradientBG 15s ease infinite;
    overflow-x: hidden;
    font-size: 16px;
    transition: var(--transition);
}

body.dark-mode {
    background: var(--background-dark);
}

@keyframes gradientBG {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
}

.wrapper {
    padding: 2rem;
    width: 100%;
    max-width: 600px;
    position: relative;
}

.main {
    background-color: var(--card-background);
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    padding: 2.5rem;
    backdrop-filter: blur(10px);
    transition: var(--transition);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.main:hover {
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.15);
}

h1 {
    font-size: 2.5rem;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 1.5rem;
    font-weight: 700;
}

ul {
    list-style-type: none;
    margin-bottom: 1.5rem;
}

li {
    margin-bottom: 1rem;
    padding: 1rem;
    padding-top: 1.5rem;
    background-color: rgba(248, 250, 252, 0.9);
    border-radius: 12px;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.dark-mode li {
    background-color: rgba(26, 32, 44, 0.9);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

li:hover {
    box-shadow: 0 12px 24px rgba(0, 0, 0, 0.13);
    filter: brightness(1.01);
}

li:active {
    filter: brightness(0.97);
}

li a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: bold;
    transition: var(--transition);
    display: flex;
    align-items: center;
}

li a:hover {
    color: var(--secondary-color);
}

li a i {
    margin-right: 0.5rem;
    font-size: 1.2em;
}

.notice {
    background-color: rgba(230, 242, 255, 0.8);
    border-left: 4px solid var(--primary-color);
    padding: 1rem;
    margin-top: 1rem;
    border-radius: 10px;
    transition: var(--transition);
}

.dark-mode .notice {
    background-color: rgba(44, 55, 72, 0.8);
}

.notice:hover {
    background-color: rgba(230, 242, 255, 1);
}

.dark-mode .notice:hover {
    background-color: rgba(44, 55, 72, 1);
}

.footer {
    margin-top: 2rem;
    text-align: center;
    color: var(--text-color);
    font-weight: 300;
    opacity: 0.8;
    transition: var(--transition);
}

.footer:hover {
    opacity: 1;
}

.bookmark-btn {
    display: block;
    width: 100%;
    padding: 1rem;
    background-color: var(--primary-color);
    color: white;
    text-align: center;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-bottom: 1.5rem;
    position: relative;
    overflow: hidden;
}

.bookmark-btn:hover {
    background-color: var(--secondary-color);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
}

.bookmark-btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 5px;
    height: 5px;
    background: rgba(255, 255, 255, 0.5);
    opacity: 0;
    border-radius: 100%;
    transform: scale(1, 1) translate(-50%);
    transform-origin: 50% 50%;
}

.bookmark-btn:focus:not(:active)::after {
    animation: ripple 1s ease-out;
}

@keyframes ripple {
    0% { transform: scale(0, 0); opacity: 1; }
    20% { transform: scale(25, 25); opacity: 1; }
    100% { opacity: 0; transform: scale(40, 40); }
}

.bg-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
}

.bg-animation span {
    position: absolute;
    display: block;
    width: 20px;
    height: 20px;
    background: rgba(255, 255, 255, 0.2);
    animation: move 25s infinite linear;
}

.dark-mode .bg-animation span {
    background: rgba(255, 255, 255, 0.1);
}

.bg-animation span:nth-child(1) { top: 20%; left: 20%; animation-duration: 15s; }
.bg-animation span:nth-child(2) { top: 60%; left: 80%; animation-duration: 17s; width: 40px; height: 40px; }
.bg-animation span:nth-child(3) { top: 40%; left: 40%; animation-duration: 19s; }
.bg-animation span:nth-child(4) { top: 80%; left: 10%; animation-duration: 21s; }

@keyframes move {
    0% { transform: translateX(0) translateY(0) rotate(0); opacity: 1; border-radius: 0; }
    100% { transform: translateX(-1000px) translateY(-1000px) rotate(720deg); opacity: 0; border-radius: 50%; }
}

/* 合并重复样式 */
.status-badge, .guide-btn {
    height: 32px;
    min-width: 72px;
    padding: 0 16px;
    border-radius: 18px;
    font-size: 1em;
    display: flex;
    align-items: center;
    justify-content: center;
    white-space: nowrap;
    box-sizing: border-box;
    box-shadow: 0 1px 4px rgba(60,60,60,0.04);
    transition: background 0.2s, color 0.2s, box-shadow 0.2s;
    font-weight: 600;
}

.ms-display {
    position: absolute;
    top: 0;
    left: 0;
    font-size: 0.7em;
    padding: 2px 5px;
    border-top-left-radius: 10px;
    border-bottom-right-radius: 10px;
    color: white;
    transition: background-color 0.3s ease;
}

.ms-checking {
    background-color: #ffeb3b;
    color: black;
}

.ms-normal {
    background-color: #4CAF50;
}

.ms-error {
    background-color: #f44336;
}

.status-badge {
    border: 1.5px solid transparent;
}

.status-normal {
    background: #4CAF50;
    color: #fff;
}

.status-error {
    background: #f44336;
    color: #fff;
}

.status-checking {
    background: #ffeb3b;
    color: #222;
}

li.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

li.disabled a {
    pointer-events: none;
}

.mode-toggle {
    position: absolute;
    top: 10px;
    right: 10px;
    background: none;
    border: none;
    color: var(--text-color);
    font-size: 1.5rem;
    cursor: pointer;
    transition: var(--transition);
    z-index: 10;
}

.mode-toggle:hover {
    color: var(--primary-color);
}

#stats-container {
    background-color: var(--card-background);
    border-radius: 10px;
    padding: 15px;
    margin-top: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: var(--transition);
}

#stats-container:hover {
    box-shadow: 0 6px 8px rgba(0, 0, 0, 0.15);
}

#last-checked-time {
    font-size: 1.2em;
    font-weight: bold;
    margin-bottom: 10px;
    color: var(--primary-color);
}

.stats-row {
    display: flex;
    justify-content: space-around;
    align-items: center;
    margin-top: 10px;
}

.stat-item {
    text-align: center;
}

.stat-value {
    font-size: 1.5em;
    font-weight: bold;
}

.stat-label {
    font-size: 0.9em;
    color: var(--text-color);
    opacity: 0.8;
}

.icon-clock, .icon-check, .icon-times {
    margin-right: 5px;
}

.icon-check {
    color: #4CAF50;
}

.icon-times {
    color: #f44336;
}

.url-content {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 8px;
    width: 100%;
}

.guide-btn {
    background: #fff;
    color: #3b82f6;
    border: 1.5px solid #3b82f6;
    cursor: pointer;
}

.guide-btn:hover {
    background: #3b82f6;
    color: #fff;
    box-shadow: 0 2px 8px rgba(60,60,60,0.08);
    border-color: #3b82f6;
    transform: translateY(-2px);
}

.guide-btn i {
    font-size: 0.9em;
}

.estimated-time {
    font-size: 0.8em;
    color: var(--text-color);
    opacity: 0.8;
    margin-left: 0 !important;
    margin-top: 0 !important;
    display: flex;
    align-items: center;
    gap: 4px;
}

.estimated-time i {
    color: var(--primary-color);
}

.url-row {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 4px;
    width: 100%;
    min-width: 0;
}

.url-title-link {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    min-width: 0;
}

.url-title-link a {
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
}

.url-actions {
    display: flex;
    flex-direction: row;
    align-items: center;
    gap: 8px;
    margin-left: 0;
    margin-top: 4px;
    width: auto;
}

/* 移动端适配优化 */
@media (max-width: 768px) {
    body {
        font-size: 14px;
    }
    .wrapper {
        padding: 1rem;
    }
    .main {
        padding: 1.5rem;
    }
    h1 {
        font-size: 1.5rem;
        margin-bottom: 1rem;
    }
    .bookmark-btn {
        padding: 0.75rem;
        font-size: 0.9rem;
        margin-bottom: 1rem;
    }
    li {
        padding: 0.75rem;
        margin-bottom: 0.5rem;
        padding-top: 1.25rem;
    }
    .url-content {
        flex-direction: column;
        align-items: flex-start;
        gap: 8px;
    }
    .url-content span:first-child {
        font-size: 0.9rem;
        margin-bottom: 0.25rem;
    }
    li a {
        font-size: 0.8rem;
        max-width: 240px; /* 限制URL长度 */
        overflow: hidden;
        text-overflow: ellipsis;
    }
    .status-badge {
        font-size: 0.7em;
        padding: 1px 4px;
        margin-left: 0;
        margin-top: 0.25rem;
    }
    .ms-display {
        font-size: 0.6em;
        padding: 1px 3px;
    }
    .notice {
        padding: 0.75rem;
        font-size: 0.8rem;
    }
    #stats-container {
        padding: 10px;
        margin-top: 15px;
    }
    #last-checked-time {
        font-size: 0.9em;
    }
    .stat-value {
        font-size: 1.2em;
    }
    .stat-label {
        font-size: 0.8em;
    }
    .footer {
        margin-top: 1.5rem;
        font-size: 0.8rem;
    }
    .mode-toggle {
        font-size: 1.2rem;
    }
    .guide-btn {
        width: 100%;
        justify-content: center;
        padding: 6px 12px;
        font-size: 0.9rem;
    }
    .estimated-time {
        margin-left: 0;
        margin-top: 4px;
    }
    .status-badge {
        margin-left: 0;
        margin-top: 8px;
    }
    .url-row {
        flex-direction: column;
        align-items: flex-start;
        gap: 6px;
        width: 100%;
    }
    .url-row a {
        max-width: 100%;
    }
    .status-badge, .guide-btn {
        width: 100%;
        min-width: 0;
        justify-content: center;
    }
    .url-actions {
        width: 100%;
        justify-content: center;
        gap: 6px;
    }
}