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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

.container {
    max-width: 100%;
    padding: 0 15px;
    margin: 0 auto;
}

header {
    background-color: #4a90d9;
    color: white;
    padding: 15px 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

header h1 {
    font-size: 24px;
    margin-bottom: 10px;
    display: flex;
    align-items: center;
    gap: 15px;
}

header h1 a {
    color: white;
    text-decoration: none;
}

.header-logo {
    height: 40px;
    width: auto;
}

header nav ul {
    list-style: none;
    display: flex;
    flex-wrap: wrap;
    gap: 15px;
    justify-content: space-between;
}

.user-name {
    margin-left: auto;
    font-size: 14px;
    color: #fff;
}

header nav ul li a {
    color: white;
    text-decoration: none;
    font-size: 14px;
}

header nav ul li a:hover {
    text-decoration: underline;
}

main {
    padding: 20px 0;
    min-height: calc(100vh - 140px);
}

h2 {
    margin-bottom: 20px;
    color: #2c3e50;
}

.flash {
    background-color: #d4edda;
    color: #155724;
    padding: 10px 15px;
    margin-bottom: 20px;
    border-radius: 4px;
    border: 1px solid #c3e6cb;
}

.form {
    background: white;
    padding: 25px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #555;
}

.form-row {
    display: flex;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 20px;
    align-items: flex-end;
}

.form-group-inline {
    flex: 1;
    min-width: 200px;
}

.form-group-inline label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: #555;
}

.checkbox-inline {
    display: flex;
    align-items: center;
    min-width: auto;
}

.checkbox-inline input[type="checkbox"] {
    margin-right: 8px;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.checkbox-inline label {
    margin-bottom: 0;
    cursor: pointer;
    font-weight: normal;
}

.checkbox-group {
    display: flex;
    align-items: center;
    margin-bottom: 20px;
}

.checkbox-group input[type="checkbox"] {
    margin-right: 8px;
    width: 18px;
    height: 18px;
    cursor: pointer;
}

.checkbox-group label {
    margin-bottom: 0;
    cursor: pointer;
    font-weight: normal;
}

.form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
    transition: border-color 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: #4a90d9;
}

.form-control.textarea {
    width: 100%;
    max-width: 100%;
    min-width: 100%;
    height: 150px;
    max-height: 200px;
    min-height: 120px;
    resize: none;
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    border: none;
    border-radius: 4px;
    font-size: 14px;
    cursor: pointer;
    text-decoration: none;
    text-align: center;
    transition: background-color 0.3s;
}

.btn-primary {
    background-color: #4a90d9;
    color: white;
}

.btn-primary:hover {
    background-color: #3a80c9;
}

.btn-edit {
    background-color: #f39c12;
    color: white;
}

.btn-edit:hover {
    background-color: #e67e22;
}

.btn-answer {
    background-color: #27ae60;
    color: white;
}

.btn-answer:hover {
    background-color: #2ecc71;
}

.btn-toggle {
    background-color: #95a5a6;
    color: white;
}

.btn-toggle:hover {
    background-color: #7f8c8d;
}

.btn-cancel {
    background-color: #ecf0f1;
    color: #333;
    margin-left: 10px;
}

.btn-cancel:hover {
    background-color: #bdc3c7;
}

.question-list {
    display: grid;
    gap: 20px;
}

.question-item {
    background: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.question-header {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 15px;
    align-items: center;
}

.branch {
    background-color: #4a90d9;
    color: white;
    padding: 4px 10px;
    border-radius: 4px;
    font-size: 12px;
}

.time {
    font-size: 12px;
    color: #999;
    display: block;
    margin-bottom: 10px;
}

.status {
    font-size: 12px;
    padding: 4px 10px;
    border-radius: 4px;
}

.status.public {
    background-color: #d4edda;
    color: #155724;
}

.status.private {
    background-color: #f8d7da;
    color: #721c24;
}

.status.waiting {
    background-color: #fff3cd;
    color: #856404;
}

.user {
    font-size: 12px;
    color: #666;
}

.demand-title {
    font-size: 18px;
    font-weight: bold;
    color: #333;
    margin-bottom: 5px;
}

.content {
    font-size: 15px;
    line-height: 1.8;
    margin-bottom: 15px;
    color: #444;
}

.question-footer {
    border-top: 1px solid #eee;
    padding-top: 15px;
}

.contact {
    font-size: 14px;
    color: #666;
    margin-bottom: 10px;
    display: block;
}

.answer {
    background-color: #f8f9fa;
    padding: 15px;
    border-radius: 4px;
    margin: 10px 0;
}

.answer p {
    margin: 10px 0;
    color: #333;
}

.answer-time {
    font-size: 12px;
    color: #999;
}

.answer-toggle {
    cursor: pointer;
    color: #4a90d9;
    font-size: 14px;
    user-select: none;
    padding: 8px 0;
}

.answer-toggle:hover {
    color: #3a80c9;
}

.toggle-icon {
    margin-right: 5px;
    font-size: 12px;
}

.actions {
    margin-top: 15px;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.empty {
    text-align: center;
    color: #999;
    padding: 40px;
    background: white;
    border-radius: 8px;
}

.login-required {
    text-align: center;
    padding: 60px 20px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.login-icon {
    font-size: 64px;
    margin-bottom: 20px;
}

.login-required h2 {
    color: #2c3e50;
    margin-bottom: 15px;
}

.login-required p {
    color: #666;
    margin-bottom: 20px;
}

.login-hint {
    background-color: #f8f9fa;
    padding: 20px;
    border-radius: 4px;
    margin-top: 20px;
}

.login-hint p {
    margin-bottom: 10px;
}

.url-example {
    font-family: monospace;
    font-size: 14px;
    color: #4a90d9;
    background-color: #fff;
    padding: 10px;
    border-radius: 4px;
    border: 1px solid #ddd;
    word-break: break-all;
}

.hint {
    margin-top: 15px;
    padding: 10px;
    background-color: #fff3cd;
    border-radius: 4px;
    font-size: 14px;
    color: #856404;
}

.question-preview {
    background: #f8f9fa;
    padding: 20px;
    border-radius: 8px;
    margin-bottom: 20px;
}

.question-preview h3 {
    margin-bottom: 10px;
    color: #2c3e50;
}

.question-preview .meta {
    font-size: 14px;
    color: #666;
    margin-top: 10px;
}

footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 15px 0;
    font-size: 14px;
}

@media (min-width: 768px) {
    .container {
        max-width: 720px;
    }
}

@media (min-width: 992px) {
    .container {
        max-width: 960px;
    }
}