* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
}
body {
    background: #eef3fa;
    padding: 24px 20px;
    color: #153e51;
}
.container {
    max-width: 1400px;
    margin: 0 auto;
}
.card {
    background: white;
    border-radius: 32px;
    box-shadow: 0 8px 24px rgba(0,0,0,0.03);
    padding: 1.8rem;
    margin-bottom: 2rem;
    border: 1px solid #dde9f0;
}
.card-header {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    border-left: 6px solid #2c7da0;
    padding-left: 1rem;
    color: #1f5e7a;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
}
.auth-bar {
    display: flex;
    gap: 12px;
    align-items: center;
}
.auth-bar .user-info {
    background: #eef2f5;
    padding: 0.3rem 1rem;
    border-radius: 40px;
    font-size: 0.8rem;
    cursor: pointer;
}
.type-selector {
    display: flex;
    gap: 1rem;
    margin-bottom: 2rem;
    background: #eaf2f7;
    padding: 0.4rem;
    border-radius: 60px;
    width: fit-content;
}
.type-btn {
    padding: 0.5rem 1.8rem;
    border-radius: 40px;
    font-weight: 600;
    background: transparent;
    border: none;
    cursor: pointer;
    font-size: 0.95rem;
    color: #2c5a6e;
}
.type-btn.active {
    background: #2c7da0;
    color: white;
}
.form-grid {
    display: flex;
    flex-wrap: wrap;
    gap: 1.2rem;
    margin-bottom: 1.5rem;
}
.input-field {
    flex: 1 1 180px;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}
.input-field label {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    color: #3c7a8c;
}
.input-field input {
    background: #fafeff;
    border: 1px solid #cce0e8;
    border-radius: 28px;
    padding: 0.7rem 1rem;
    font-size: 0.9rem;
    outline: none;
}
.double-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1.2rem;
    background: #f6fbfe;
    padding: 1.2rem;
    border-radius: 28px;
    margin-bottom: 1.5rem;
    border: 1px solid #dde9f0;
}
button {
    background: #2c7da0;
    border: none;
    padding: 0.7rem 1.8rem;
    border-radius: 40px;
    font-weight: 600;
    color: white;
    cursor: pointer;
    font-size: 0.9rem;
    transition: 0.2s;
}
button:hover {
    background: #1f5e7a;
    transform: translateY(-1px);
}
.btn-outline {
    background: white;
    border: 1px solid #c2dae6;
    color: #1f5e7a;
}
.btn-outline:hover {
    background: #e9f2f7;
    transform: none;
}
.table-wrapper {
    overflow-x: auto;
    border-radius: 24px;
    border: 1px solid #e2edf2;
}
table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.82rem;
}
th {
    background: #eef3f8;
    padding: 0.9rem 0.5rem;
    font-weight: 700;
}
td {
    padding: 0.7rem 0.4rem;
    border-bottom: 1px solid #eaf1f5;
    vertical-align: middle;
}
.badge {
    display: inline-block;
    padding: 0.2rem 0.7rem;
    border-radius: 40px;
    font-size: 0.7rem;
    font-weight: 600;
}
.badge-fuel {
    background: #feeed6;
    color: #bc6c25;
}
.badge-ev {
    background: #daf0f8;
    color: #1a6b8a;
}
.delete-btn {
    background: none;
    border: none;
    font-size: 1.1rem;
    cursor: pointer;
    color: #7fa3b5;
}
.delete-btn:hover {
    color: #c13b1b;
    background: #ffe8e3;
    border-radius: 30px;
}
.edit-btn {
    background: none;
    border: none;
    font-size: 1.1rem;
    cursor: pointer;
    color: #7fa3b5;
    margin-right: 4px;
}
.edit-btn:hover {
    color: #2c7da0;
    background: #e3f0f7;
    border-radius: 30px;
}
.chart-container {
    background: white;
    border-radius: 28px;
    padding: 1rem;
    border: 1px solid #e2edf2;
    margin-top: 0;
}
canvas {
    max-height: 340px;
    width: 100%;
}
.info-note {
    background: #eef2f5;
    border-radius: 20px;
    padding: 0.6rem 1rem;
    font-size: 0.72rem;
    color: #2c5a6e;
    margin-top: 1rem;
}
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}
.modal-content {
    background: white;
    max-width: 560px;
    width: 90%;
    border-radius: 32px;
    padding: 2rem;
}
.profile-menu-btn {
    background: none;
    border: none;
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    font-weight: 600;
    cursor: pointer;
    border-radius: 40px;
    color: #2c5a6e;
    transition: 0.2s;
}
.profile-menu-btn.active {
    background: #2c7da0;
    color: white;
}
.profile-menu-btn:hover:not(.active) {
    background: #eaf2f7;
}
/* ===== 注册协议弹窗 ===== */
.modal-overlay {
    position: fixed;
    top: 0; left: 0;
    width: 100%; height: 100%;
    background: rgba(0,0,0,0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}
.modal-box {
    background: white;
    max-width: 560px;
    width: 92%;
    max-height: 80vh;
    border-radius: 32px;
    padding: 2rem 1.8rem 1.5rem;
    box-shadow: 0 20px 60px rgba(0,0,0,0.15);
    display: flex;
    flex-direction: column;
}
.modal-box h3 {
    font-size: 1.3rem;
    color: #1f5e7a;
    margin-bottom: 1rem;
    border-left: 5px solid #2c7da0;
    padding-left: 0.8rem;
}
.modal-scroll {
    flex: 1;
    overflow-y: auto;
    background: #f7fafc;
    border: 1px solid #dde9f0;
    border-radius: 20px;
    padding: 1.2rem;
    font-size: 0.88rem;
    line-height: 1.7;
    color: #153e51;
    max-height: 55vh;
    white-space: pre-wrap;
}
.modal-actions {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-top: 1.2rem;
    flex-wrap: wrap;
}
.agree-checkbox {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.88rem;
    color: #2c5a6e;
    cursor: pointer;
    user-select: none;
}
.agree-checkbox input[type="checkbox"] {
    width: 18px;
    height: 18px;
    accent-color: #2c7da0;
    cursor: pointer;
}
.btn-primary {
    background: #2c7da0;
    border: none;
    padding: 0.7rem 1.8rem;
    border-radius: 40px;
    font-weight: 600;
    color: white;
    cursor: pointer;
    font-size: 0.9rem;
    transition: 0.2s;
}
.btn-primary:hover:not(:disabled) {
    background: #1f5e7a;
}
.btn-primary:disabled {
    background: #b0cbd8;
    cursor: not-allowed;
    transform: none;
}


/* ============================================
   移动端适配补丁
   ============================================ */

/* --- 小屏手机 (< 480px) --- */
@media (max-width: 480px) {
    body {
        padding: 12px 10px;
    }

    .card {
        padding: 1rem;
        border-radius: 20px;
        margin-bottom: 1.2rem;
    }

    .card-header {
        font-size: 1.15rem;
        flex-direction: column;
        align-items: flex-start;
        gap: 0.8rem;
        border-left-width: 4px;
        padding-left: 0.8rem;
        margin-bottom: 1rem;
    }

    .auth-bar {
        width: 100%;
        justify-content: space-between;
    }

    .type-selector {
        width: 100%;
        border-radius: 40px;
    }
    .type-btn {
        flex: 1;
        text-align: center;
        padding: 0.5rem 0.5rem;
        font-size: 0.85rem;
    }

    .form-grid {
        flex-direction: column;
        gap: 0.8rem;
    }
    .input-field {
        flex: 1 1 100%;
    }

    .double-row {
        flex-direction: column;
        gap: 0.8rem;
        padding: 0.8rem;
        border-radius: 16px;
    }

    .input-field input {
        padding: 0.8rem 1rem;
        font-size: 16px;
        border-radius: 16px;
    }

    button {
        padding: 0.7rem 1.2rem;
        font-size: 0.9rem;
        min-height: 44px;
        border-radius: 28px;
    }

    form > div[style*="justify-content:flex-end"] {
        flex-direction: column;
        gap: 0.6rem;
    }
    form > div[style*="justify-content:flex-end"] button {
        width: 100%;
        text-align: center;
    }

    .card-header > div {
        display: flex;
        flex-wrap: wrap;
        gap: 0.5rem;
        width: 100%;
    }
    #totalCostDisplay {
        font-size: 0.78rem;
        padding: 0.25rem 0.6rem;
        margin-right: 0 !important;
    }
    #exportExcelBtn, #importExcelBtn {
        font-size: 0.78rem;
        padding: 0.4rem 0.8rem;
    }

    .table-wrapper {
        border-radius: 12px;
        -webkit-overflow-scrolling: touch;
    }
    table {
        font-size: 0.72rem;
        min-width: 900px;
    }
    th {
        padding: 0.6rem 0.3rem;
        font-size: 0.68rem;
        white-space: nowrap;
    }
    td {
        padding: 0.5rem 0.3rem;
        white-space: nowrap;
    }

    .chart-container {
        border-radius: 16px;
        padding: 0.6rem;
    }
    .chart-container h3 {
        font-size: 1rem;
        margin-bottom: 0.5rem;
    }
    canvas {
        max-height: 220px;
    }

    .info-note {
        font-size: 0.68rem;
        padding: 0.5rem 0.8rem;
        border-radius: 12px;
    }

    .modal-box {
        width: 95%;
        max-height: 90vh;
        padding: 1.5rem 1.2rem 1rem;
        border-radius: 20px;
    }
    .modal-box h3 {
        font-size: 1.1rem;
    }
    .modal-scroll {
        font-size: 0.82rem;
        padding: 0.8rem;
        max-height: 50vh;
        border-radius: 12px;
    }
    .modal-actions {
        flex-direction: column;
        align-items: stretch;
        gap: 0.8rem;
    }
    .modal-actions > div {
        flex-direction: column;
        gap: 0.5rem;
    }
    .modal-actions button {
        width: 100%;
        text-align: center;
    }

    .edit-btn, .delete-btn {
        font-size: 1.3rem;
        padding: 0.3rem;
    }

    .badge {
        font-size: 0.62rem;
        padding: 0.15rem 0.5rem;
    }

    .profile-menu-btn {
        font-size: 0.82rem;
        padding: 0.4rem 0.8rem;
    }

    .modal {
        padding: 12px;
    }
    .modal-content {
        max-width: 100% !important;
        width: 100%;
        padding: 1.2rem 1rem;
        border-radius: 20px;
        max-height: 92vh;
        overflow-y: auto;
    }
    .modal-content h3 {
        font-size: 1.1rem;
    }
    .modal-content .form-grid {
        flex-direction: column;
        gap: 0.6rem;
    }
    .modal-content .double-row {
        flex-direction: column;
        gap: 0.6rem;
        padding: 0.6rem;
    }
    .modal-content input {
        font-size: 16px;
        padding: 0.75rem 0.8rem;
    }
    .modal-content button {
        width: 100%;
    }
    .modal-content > div[style*="justify-content:flex-end"] {
        flex-direction: column;
    }
}

/* --- 中等屏幕 / 大手机 (481px ~ 768px) --- */
@media (min-width: 481px) and (max-width: 768px) {
    body {
        padding: 16px 14px;
    }

    .card {
        padding: 1.3rem;
        border-radius: 24px;
    }

    .card-header {
        font-size: 1.3rem;
        flex-wrap: wrap;
        gap: 0.8rem;
    }

    .type-selector {
        width: 100%;
    }
    .type-btn {
        flex: 1;
        text-align: center;
        padding: 0.5rem 1rem;
    }

    .form-grid {
        gap: 1rem;
    }
    .input-field {
        flex: 1 1 45%;
    }

    .double-row {
        gap: 1rem;
        padding: 1rem;
        border-radius: 20px;
    }

    .input-field input {
        font-size: 16px;
        padding: 0.75rem 1rem;
    }

    .table-wrapper {
        border-radius: 16px;
    }
    table {
        font-size: 0.78rem;
        min-width: 850px;
    }
    th, td {
        padding: 0.6rem 0.4rem;
    }

    canvas {
        max-height: 280px;
    }

    .modal-box {
        width: 92%;
        padding: 1.8rem 1.5rem;
    }
}

/* --- 触控设备优化 --- */
@media (hover: none) and (pointer: coarse) {
    button, .btn-outline, .btn-primary {
        min-height: 44px;
    }

    .edit-btn, .delete-btn {
        min-width: 36px;
        min-height: 36px;
        padding: 0.4rem;
    }

    button:hover {
        transform: none;
    }

    .input-field input:focus {
        border-color: #2c7da0;
        box-shadow: 0 0 0 3px rgba(44, 125, 160, 0.15);
    }
}

/* --- 横屏手机 --- */
@media (max-height: 500px) and (orientation: landscape) {
    body {
        padding: 8px 16px;
    }
    .card {
        padding: 0.8rem;
        margin-bottom: 0.8rem;
    }
    .card-header {
        font-size: 1rem;
        margin-bottom: 0.8rem;
    }
    canvas {
        max-height: 180px;
    }
}

/* 密码显示/隐藏切换按钮 */
.pwd-wrap {
    display: flex;
    align-items: center;
    width: 100%;
}
.pwd-wrap input {
    flex: 1;
    min-width: 0;
}
.pwd-toggle {
    flex-shrink: 0;
    background: none;
    border: none;
    font-size: 1.3rem;
    cursor: pointer;
    padding: 0.6rem 0.5rem;
    line-height: 1;
    opacity: 0.5;
    transition: opacity 0.15s;
    -webkit-appearance: none;
    min-height: 44px;
    min-width: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.pwd-toggle:hover {
    opacity: 1;
}
.pwd-toggle.showing {
    opacity: 1;
}

/* 分页控件 */
.pagination {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.8rem 0.4rem;
    gap: 0.5rem;
    flex-wrap: wrap;
}
.page-info {
    font-size: 0.8rem;
    color: #666;
    white-space: nowrap;
}
.page-controls {
    display: flex;
    gap: 0.3rem;
    align-items: center;
}
.page-controls button {
    min-width: 2rem;
    height: 2rem;
    padding: 0 0.4rem;
    border: 1px solid #d0dde5;
    background: white;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.85rem;
    color: #2c5a6e;
    transition: all 0.15s;
}
.page-controls button:hover:not(:disabled) {
    background: #e3f0f7;
    border-color: #2c7da0;
}
.page-controls button:disabled {
    opacity: 0.35;
    cursor: default;
}
.page-controls button.active {
    background: #2c7da0;
    color: white;
    border-color: #2c7da0;
    font-weight: 700;
}
.page-size-select {
    padding: 0.3rem 0.5rem;
    border: 1px solid #d0dde5;
    border-radius: 8px;
    font-size: 0.8rem;
    color: #2c5a6e;
    background: white;
    cursor: pointer;
}

/* 车型选择 */
.vehicle-type-select {
    margin-bottom: 1rem;
    padding: 0.8rem 1rem;
    background: #f8f9fa;
    border-radius: 8px;
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}
.type-radio {
    cursor: pointer;
    padding: 0.2rem 0.6rem;
    border-radius: 4px;
    font-size: 0.85rem;
    background: #fff;
    border: 1px solid #ddd;
    user-select: none;
}
.type-radio input { margin-right: 0.2rem; }