*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    background-color: var(--bg-base);
    color: var(--text-primary);
    font-family: 'Inter', sans-serif;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 20px;
    margin: 0;
    min-height: 100vh;
    transition: background-color 0.3s ease, color 0.3s ease;
}

.container {
    width: 100%;
    max-width: 900px;
    margin: auto;
    padding: 30px;
    border-radius: 18px;
    background-color: var(--bg-mantle);
    box-shadow: 0 8px 25px var(--shadow-color);
    display: flex;
    flex-direction: column;
}

.menu {
    margin-bottom: 25px;
    display: flex;
    justify-content: center;
    gap: 10px;
    flex-wrap: wrap;
}

.menu a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 8px 15px;
    border-radius: 8px;
    background-color: var(--bg-surface);
    display: inline-block;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.menu a:hover,
.menu a:focus {
    color: var(--text-primary);
    background-color: var(--bg-surface-hover);
    outline: none;
    box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent-primary) 30%, transparent);
}

.menu a.active {
    color: var(--button-text-color);
    background-color: var(--accent-primary);
}

.header {
    text-align: center;
    margin-bottom: 30px;
}

h1 {
    color: var(--accent-primary);
    font-size: 2.2rem;
    margin: 0 0 10px 0;
}

.header p {
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}

.input-area {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}

.input-group {
    flex-grow: 1;
    display: flex;
    align-items: center;
    position: relative;
    background-color: var(--bg-surface);
    border-radius: 12px;
    border: 1.5px solid var(--border-color);
    overflow: hidden;
    transition: all 0.2s ease;
}

.input-group:focus-within {
    border-color: var(--input-focus-color);
    box-shadow: 0 0 0 3px color-mix(in srgb, var(--input-focus-color) 30%, transparent);
}

.input-group .icon-prefix {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-tertiary);
}

.input-group input[type="text"] {
    flex-grow: 1;
    padding: 14px 15px 14px 45px;
    border: none;
    background: transparent;
    color: var(--text-primary);
    font-size: 1rem;
    outline: none;
    width: 100%;
}

.input-group input[type="text"]::placeholder {
    color: var(--text-placeholder);
    opacity: 1;
}

.action-button {
    background-color: var(--accent-primary);
    color: var(--button-text-color);
    border: none;
    padding: 14px 25px;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    border-radius: 12px;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    white-space: nowrap;
}

.action-button:hover {
    background-color: var(--accent-primary-hover);
}

.action-button:disabled {
    background-color: var(--ctp-overlay0);
    cursor: not-allowed;
}

.message-area {
    text-align: center;
    padding: 10px 0;
    min-height: 24px;
    font-weight: 500;
}

.message-area .error {
    color: var(--error-color);
}

.message-area .success {
    color: var(--success-color);
}

.message-area .info {
    color: var(--info-color);
}

#apiKeySection {
    text-align: center;
    padding: 20px 0;
}

#dashboardSection {
    display: none;
}

.dashboard-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 30px;
}

@media (min-width: 768px) {
    .dashboard-grid {
        grid-template-columns: 300px 1fr;
    }
}

.result-card {
    background-color: var(--bg-crust);
    padding: 25px;
    border-radius: 15px;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.card-header {
    margin-bottom: 20px;
}

.card-header h2 {
    margin: 0;
    font-size: 1.4rem;
    color: var(--text-primary);
}

#trackedUsersList {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.user-card {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background-color: var(--bg-surface);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: 1px solid transparent;
}

.user-card:hover {
    background-color: var(--bg-surface-hover);
}

.user-card.active {
    border-color: var(--accent-primary);
    background-color: color-mix(in srgb, var(--accent-primary) 15%, var(--bg-surface));
}

.user-card img {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border-color);
    flex-shrink: 0;
}

.user-info {
    flex-grow: 1;
    min-width: 0;
}

.user-info .nickname {
    font-weight: 700;
    color: var(--text-primary);
    margin: 0;
    font-size: 1rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.user-info .username {
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin: 0;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.remove-btn {
    background: none;
    border: none;
    color: var(--text-tertiary);
    font-size: 1rem;
    cursor: pointer;
    padding: 5px;
    transition: color 0.2s ease;
    flex-shrink: 0;
}

.remove-btn:hover {
    color: var(--error-color);
}

.last-checked {
    font-size: 0.75rem;
    color: var(--text-tertiary);
    margin: 4px 0 0 0;
    display: flex;
    align-items: center;
    gap: 6px;
}

.last-checked .status-icon {
    color: var(--success-color);
    font-size: 0.5rem;
}

.last-checked strong {
    color: var(--text-secondary);
}

#logContainer {
    max-height: 500px;
    overflow-y: auto;
    padding-right: 10px;
}

.log-entry {
    padding: 15px;
    background-color: var(--bg-surface);
    border-radius: 8px;
    margin-bottom: 12px;
    border-left: 3px solid var(--accent-secondary);
}

.log-entry .timestamp {
    font-size: 0.8rem;
    color: var(--text-tertiary);
    margin-bottom: 10px;
}

.log-entry .change-details {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.log-entry .change-details strong {
    color: var(--text-primary);
    font-weight: 500;
}

.log-entry .change-details .change-value {
    background-color: var(--bg-mantle);
    padding: 2px 6px;
    border-radius: 4px;
    font-family: monospace;
    word-break: break-all;
}

.avatar-change-container {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-top: 8px;
}

.avatar-preview {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    object-fit: cover;
    border: 2px solid var(--border-color);
}

.change-arrow {
    font-size: 1.2rem;
    color: var(--text-tertiary);
}

.loader {
    width: 20px;
    height: 20px;
    border: 2px solid var(--ctp-surface2);
    border-bottom-color: var(--accent-primary);
    border-radius: 50%;
    display: inline-block;
    animation: rotation 1s linear infinite;
}

@keyframes rotation {
    0% {
        transform: rotate(0deg);
    }

    100% {
        transform: rotate(360deg);
    }
}

footer {
    margin-top: 40px;
}

.credits {
    color: var(--text-tertiary);
    font-size: 0.85rem;
    text-align: center;
}

.credits a {
    color: var(--accent-tertiary);
    text-decoration: none;
}

.credits a:hover {
    text-decoration: underline;
}

.credits .heart {
    color: var(--error-color);
}

@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .container {
        padding: 20px 15px;
        border-radius: 12px;
    }

    h1 {
        font-size: 1.7rem;
    }

    .header p {
        font-size: 0.9rem;
    }

    .menu a {
        padding: 6px 12px;
        font-size: 0.85rem;
    }

    .input-area {
        flex-direction: column;
        gap: 12px;
    }

    .action-button {
        width: 100%;
        padding: 12px;
    }

    .input-group input[type="text"] {
        padding: 12px 15px 12px 40px;
        font-size: 0.95rem;
    }

    .dashboard-grid {
        gap: 20px;
    }

    .result-card {
        padding: 15px;
    }

    .card-header h2 {
        font-size: 1.2rem;
    }

    .user-card {
        padding: 10px;
        gap: 12px;
    }

    .user-card img {
        width: 42px;
        height: 42px;
    }

    .user-info .nickname {
        font-size: 0.95rem;
    }

    #logContainer {
        max-height: 400px;
    }

    .log-entry {
        padding: 12px;
    }

    /* Mobile Footer */
    footer {
        margin-top: 25px;
    }
}