:root {
    /* Brand Colors */
    --color-primary: #3498db;
    --color-primary-hover: #2980b9;
    --color-primary-active: #2472a4;
    --color-danger: #f56c6c;
    /* Used for error text and weak warnings */
    --color-danger-strong: #e74c3c;
    /* Used for logout button */
    --color-danger-hover: #c0392b;
    --color-success: #67c23a;

    /* Text Colors */
    --color-text-main: #2c3e50;
    --color-text-regular: #606266;
    --color-text-secondary: #909399;
    --color-text-white: #ffffff;

    /* Background Colors */
    --color-bg-body: #f5f7fa;
    --color-bg-white: #ffffff;
    --color-bg-control: #eef2f7;
    --color-bg-header: #f4f6f8;
    --color-bg-hover: #f5f7fa;
    --color-bg-overlay: rgba(0, 0, 0, 0.35);

    /* Tag Backgrounds */
    --color-bg-tag-buy: #e1f3d8;
    --color-bg-tag-no-buy: #fde2e2;

    /* Borders */
    --color-border: #dcdfe6;
    --color-border-light: #ebeef5;
    --color-focus-ring: rgba(52, 152, 219, 0.12);

    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 10px;
    --spacing-base: 12px;
    --spacing-lg: 16px;
    --spacing-xl: 20px;
    --spacing-xxl: 24px;

    /* Components */
    --radius-sm: 4px;
    --radius-base: 6px;
    --radius-lg: 8px;
    --radius-xl: 10px;
    --container-max-width: 1400px;
    --shadow-base: 0 2px 12px rgba(0, 0, 0, 0.1);
    --shadow-modal: 0 8px 30px rgba(0, 0, 0, 0.15);
}

/* Base Styles */
body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    margin: var(--spacing-xl);
    background-color: var(--color-bg-body);
    color: var(--color-text-regular);
    line-height: 1.5;
}

h1 {
    color: var(--color-text-main);
    border-bottom: 2px solid var(--color-primary);
    padding-bottom: var(--spacing-md);
    margin-top: 0;
}

h2 {
    margin: 0 0 var(--spacing-md);
    color: var(--color-text-main);
}

h3 {
    margin: 0 0 var(--spacing-lg);
    color: var(--color-text-main);
}

/* Layout */
.container {
    max-width: var(--container-max-width);
    margin: 0 auto;
    background: var(--color-bg-white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-base);
}

.controls {
    margin-bottom: var(--spacing-xl);
    padding: 15px;
    /* Kept specific padding from original layout */
    background: var(--color-bg-control);
    border-radius: var(--radius-base);
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

/* Form Elements */
label {
    color: var(--color-text-regular);
    font-size: 14px;
}

input {
    outline: none;
    box-sizing: border-box;
}

select {
    padding: 8px 12px;
    /* Original values */
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border);
    min-width: 300px;
    color: var(--color-text-regular);
}

/* Overlays & Modals (Common) */
.login-overlay,
.modal-overlay {
    position: fixed;
    inset: 0;
    background: var(--color-bg-overlay);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-overlay {
    z-index: 1001;
    /* Modals higher than login if they co-exist, though unlikely */
    display: none;
    /* Hidden by default */
}

.login-box,
.modal-box {
    background: var(--color-bg-white);
    padding: var(--spacing-xxl) 28px;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-modal);
    width: 360px;
}

/* Specific Modal Styles */
.login-tip {
    margin: 0 0 var(--spacing-lg);
    color: var(--color-text-secondary);
    font-size: 14px;
}

.login-box label,
.modal-box label {
    display: block;
    margin-top: var(--spacing-base);
    margin-bottom: 6px;
    color: var(--color-text-regular);
    font-size: 14px;
}

.login-box input,
.modal-box input {
    width: 100%;
    padding: 10px 12px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-base);
    font-size: 14px;
    transition: all 0.2s;
}

.login-box input:focus,
.modal-box input:focus {
    border-color: var(--color-primary);
    box-shadow: 0 0 0 2px var(--color-focus-ring);
}

.login-error,
.modal-error {
    color: var(--color-danger);
    min-height: 18px;
    margin-top: var(--spacing-md);
    font-size: 13px;
}

.modal-success {
    color: var(--color-success);
    min-height: 18px;
    margin-top: var(--spacing-md);
    font-size: 13px;
}

/* Buttons */
button {
    cursor: pointer;
    font-family: inherit;
}

.login-btn {
    width: 100%;
    margin-top: 18px;
    background: var(--color-primary);
    color: var(--color-text-white);
    border: none;
    padding: 10px;
    border-radius: var(--radius-base);
    font-size: 15px;
    transition: background 0.2s;
}

.login-btn:hover {
    background: var(--color-primary-hover);
}

.login-btn:active {
    background: var(--color-primary-active);
}

.modal-buttons {
    display: flex;
    gap: 10px;
    margin-top: 18px;
}

.modal-btn {
    flex: 1;
    padding: 10px;
    border-radius: var(--radius-base);
    font-size: 14px;
    border: none;
    transition: background 0.2s;
}

.modal-btn-primary {
    background: var(--color-primary);
    color: var(--color-text-white);
}

.modal-btn-primary:hover {
    background: var(--color-primary-hover);
}

.modal-btn-secondary {
    background: #e4e7ed;
    /* Keep distinct grey for secondary */
    color: var(--color-text-regular);
}

.modal-btn-secondary:hover {
    background: var(--color-border);
}

.settings-btn,
.logout-btn {
    position: fixed;
    top: 20px;
    color: var(--color-text-white);
    border: none;
    padding: 8px 16px;
    border-radius: var(--radius-base);
    font-size: 14px;
    z-index: 100;
    transition: background 0.2s;
}

.settings-btn {
    right: 20px;
    background: var(--color-primary);
}

.settings-btn:hover {
    background: var(--color-primary-hover);
}

.logout-btn {
    right: 120px;
    background: var(--color-danger-strong);
}

.logout-btn:hover {
    background: var(--color-danger-hover);
}

.menu-btn {
    position: fixed;
    top: 20px;
    right: 220px;
    /* Left of settings button */
    color: var(--color-text-white);
    background: var(--color-success);
    border: none;
    padding: 8px 16px;
    border-radius: var(--radius-base);
    font-size: 14px;
    z-index: 100;
    transition: background 0.2s;
}

.menu-btn:hover {
    background: #50b624;
}

/* Analyze Button */
.analyze-btn {
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: var(--color-text-white);
    border: none;
    padding: 8px 20px;
    border-radius: var(--radius-base);
    font-size: 14px;
    font-weight: 500;
    margin-left: auto;
    transition: all 0.3s ease;
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.3);
}

.analyze-btn:hover:not(:disabled) {
    background: linear-gradient(135deg, #5a6fd6, #6a4190);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.analyze-btn:active:not(:disabled) {
    transform: translateY(0);
}

.analyze-btn:disabled {
    background: #b0b0b0;
    cursor: not-allowed;
    box-shadow: none;
}

.analyze-btn.running {
    background: linear-gradient(135deg, #f093fb, #f5576c);
    animation: pulse 1.5s infinite;
}

.analyze-btn.cooldown {
    background: linear-gradient(135deg, #89d8d3, #03c8a8);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

/* Data Table */
table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-md);
}

th,
td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--color-border-light);
}

th {
    background-color: var(--color-bg-header);
    color: var(--color-text-regular);
    font-weight: 600;
    white-space: nowrap;
}

tr:hover {
    background-color: var(--color-bg-hover);
}

.reason-cell {
    max-width: 400px;
    line-height: 1.5;
    color: var(--color-text-regular);
}

/* Status Tags & Colors */
.tag {
    display: inline-block;
    padding: 4px 8px;
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: bold;
}

.tag-buy {
    background-color: var(--color-bg-tag-buy);
    color: var(--color-success);
}

.tag-no-buy {
    background-color: var(--color-bg-tag-no-buy);
    color: var(--color-danger);
}

.red-text {
    color: var(--color-danger);
}

.green-text {
    color: var(--color-success);
}

/* Switch Component */
.filter-switch {
    display: inline-flex;
    align-items: center;
    margin-left: 20px;
}

.filter-switch label:first-child {
    margin-right: var(--spacing-sm);
}

.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 22px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-border);
    transition: .3s;
    border-radius: 22px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 2px;
    bottom: 2px;
    background-color: white;
    transition: .3s;
    border-radius: 50%;
}

input:checked+.slider {
    background-color: var(--color-success);
}

input:checked+.slider:before {
    transform: translateX(22px);
}

/* Loading State */
.loading {
    text-align: center;
    padding: 40px;
    color: var(--color-text-secondary);
    display: none;
}

/* Mobile Optimization */
@media screen and (max-width: 768px) {
    body {
        margin: 10px;
        font-size: 14px;
    }

    /* Container adjustments */
    .container {
        padding: 15px;
        width: 100%;
        box-sizing: border-box;
    }

    h1 {
        font-size: 20px;
        margin-top: 50px; /* Space for fixed header if buttons wrap, usually they will flow now */
        text-align: center;
    }

    /* Header Actions - Re-flow buttons */
    .header-actions {
        display: flex;
        justify-content: flex-end;
        gap: 8px;
        margin-bottom: 15px;
        flex-wrap: wrap;
    }

    .logout-btn,
    .settings-btn,
    .menu-btn {
        position: static; /* Remove fixed positioning */
        padding: 8px 12px;
        font-size: 13px;
        flex: 1;
        text-align: center;
        white-space: nowrap;
        margin: 0; /* Clear margins */
        top: auto; right: auto; left: auto; /* Reset positions */
    }
    
    .logout-btn { background-color: var(--color-danger-strong); }
    .settings-btn { background-color: var(--color-primary); }
    .menu-btn { background-color: var(--color-success); }


    /* Controls Area */
    .controls {
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
        padding: 12px;
    }

    .controls label {
        margin-bottom: 4px;
    }

    .controls select,
    .controls input[type="text"] {
        width: 100%;
        min-width: 0;
        height: 40px;
        margin-left: 0 !important;
    }

    .filter-switch {
        margin-left: 0;
        justify-content: space-between;
        width: 100%;
    }

    #totalCount {
        margin-left: 0 !important;
        text-align: right;
        display: block;
        margin-top: 5px;
    }

    /* Table to Card View */
    table, thead, tbody, th, td, tr {
        display: block;
    }

    thead tr {
        position: absolute;
        top: -9999px;
        left: -9999px;
    }

    tr {
        border: 1px solid var(--color-border);
        border-radius: var(--radius-base);
        margin-bottom: 12px;
        background: #fff;
        box-shadow: 0 1px 3px rgba(0,0,0,0.05);
        padding: 10px 0;
    }

    td {
        border: none;
        border-bottom: 1px solid #f0f0f0;
        position: relative;
        padding: 8px 15px 8px 120px !important; /* Left padding for label */
        text-align: right !important;
        min-height: 24px;
        display: flex;
        align-items: center;
        justify-content: flex-end;
        line-height: 1.4;
    }

    td:before {
        position: absolute;
        left: 15px;
        top: 8px; /* Align with top padding */
        width: 100px;
        white-space: nowrap;
        text-align: left;
        font-weight: 600;
        color: var(--color-text-secondary);
    }

    /* Add content labels */
    td:nth-of-type(1):before { content: "代码"; }
    td:nth-of-type(2):before { content: "名称"; }
    td:nth-of-type(3):before { content: "日期"; }
    td:nth-of-type(4):before { content: "日涨跌"; }
    td:nth-of-type(5):before { content: "近1年"; }
    td:nth-of-type(6):before { content: "近3年"; }
    td:nth-of-type(7):before { content: "决策"; }
    td:nth-of-type(8):before { content: "AI 分析"; }
    td:nth-of-type(9):before { content: "操作"; }

    td:last-child {
        border-bottom: none;
        padding-left: 15px !important;
        padding-right: 15px !important;
        justify-content: flex-end;
    }
    
    td:last-child:before {
        display: none;
    }
    
    .reason-cell {
        max-width: none;
        text-align: right;
    }

    /* Modal Adjustments */
    .modal-box, .login-box {
        width: 90%;
        max-width: 90%;
        padding: 20px;
    }
}