/* CSS Variables for Theme Support - fully compatible with Sphinx themes */
:root {
    /* Use system colors and transparent backgrounds to match Sphinx */
    --bg-primary: transparent;
    --bg-secondary: rgba(248, 250, 252, 0.5);
    --bg-card: rgba(255, 255, 255, 0.8);
    --text-primary: currentColor;
    --text-secondary: currentColor;
    --border-color: rgba(128, 128, 128, 0.2);
    --border-hover: rgba(128, 128, 128, 0.4);
    --accent-primary: #5191ee; /* Updated to match requirement */
    --accent-primary-hover: #4179d8; /* Darker shade for hover */
    --accent-secondary: currentColor;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-error: #ef4444;
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
}

/* Dark theme adjustments for Sphinx dark theme */
[data-theme="dark"], html[data-theme="dark"] {
    --bg-secondary: rgba(30, 41, 59, 0.6);
    --bg-card: rgba(30, 41, 59, 0.8);
    --border-color: rgba(255, 255, 255, 0.1);
    --border-hover: rgba(255, 255, 255, 0.2);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
}

/* Reset and base styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: '微软雅黑', 'Microsoft YaHei', 'Times New Roman', sans-serif;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
}

/* Layout components */
.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 0.5rem;
}

.main-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1rem;
}

@media (max-width: 768px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
}


/* Typography */
.title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}

.subtitle {
    font-size: 0.9rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.section-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Form elements */
.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: 0.3rem;
}

.form-select {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-select:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(81, 145, 238, 0.1); /* Updated to use new blue color */
}

.form-input {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--bg-primary);
    color: var(--text-primary);
    font-size: 0.875rem;
}

.form-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(81, 145, 238, 0.1); /* Updated to use new blue color */
}

.form-input::placeholder {
    color: var(--text-secondary);
    opacity: 0.5;
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-decoration: none;
    min-height: 44px;
}

.btn-primary {
    background: #5191ee; /* Unified blue color - removed gradient */
    color: white;
}


.btn-secondary {
    background: #5191ee; /* Unified blue color - removed gradient */
    color: white;
}


.btn-group {
    display: flex;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.btn-group .btn {
    flex: 1;
    min-width: 0;
}

/* Model source selector */
.model-source-selector {
    display: flex;
    gap: 0.25rem;
    background: var(--bg-secondary);
    padding: 0.25rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.model-source-option {
    flex: 1;
    padding: 0.5rem 1rem;
    text-align: center;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid transparent;
}

.model-source-option:hover {
    color: var(--text-primary);
    background: var(--bg-card);
}

.model-source-option.active {
    background: #5191ee; /* Unified blue color - removed gradient */
    color: white;
    border-color: #4179d8;
}


/* Results display */
.result-display {
    text-align: center;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: 8px;
    margin-bottom: 1rem;
}

.result-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-primary);
    margin-bottom: 0.5rem;
}

.result-label {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.metrics-row {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    margin-bottom: 1rem;
}

.metric-item {
    background: var(--bg-secondary);
    padding: 0.5rem 0.75rem;
    border-radius: 6px;
    font-size: 0.8rem;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

/* Calculation steps - Ultra compact design */
.calculation-steps {
    background: linear-gradient(135deg, var(--bg-secondary) 0%, rgba(81, 145, 238, 0.05) 100%);
    border-radius: 12px;
    padding: 0.75rem;
    margin-top: 0.75rem;
    border: 1px solid var(--border-color);
}

.formula-card {
    background: var(--bg-card);
    border-radius: 8px;
    padding: 0.625rem 0.875rem;
    margin-bottom: 0.625rem;
    border-left: 3px solid var(--accent-primary);
}

.formula-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.375rem;
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.8rem;
}

.formula-content {
    background: var(--bg-secondary);
    border-radius: 6px;
    padding: 0.5rem 0.625rem;
    font-family: 'Consolas', 'Monaco', 'Courier New', monospace;
    font-size: 0.75rem;
    line-height: 1.4;
    color: var(--text-primary);
}

.formula-main {
    color: var(--accent-primary);
    font-weight: 600;
    margin-bottom: 0.25rem;
    font-size: 0.8rem;
}

.formula-breakdown {
    margin-top: 0.25rem;
    padding-top: 0.25rem;
    border-top: 1px dashed var(--border-color);
}

.formula-step {
    display: flex;
    align-items: baseline;
    margin-bottom: 0.125rem;
}

.formula-step-label {
    color: var(--text-secondary);
    margin-right: 0.5rem;
    flex-shrink: 0;
    font-size: 0.7rem;
}

.formula-step-value {
    color: var(--text-primary);
    font-weight: 500;
    font-size: 0.7rem;
}

.calculation-section {
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    margin-top: 1rem;
}

/* URL Format Guide */
.url-format-guide {
    transition: all 0.2s ease;
}

.url-format-guide:hover {
    border-color: var(--accent-primary);
    box-shadow: 0 2px 8px rgba(81, 145, 238, 0.1);
}

/* Toast notifications */
.toast-container {
    position: fixed;
    top: 1rem;
    right: 1rem;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    max-width: 400px;
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 1rem;
    box-shadow: var(--shadow-lg);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    max-width: 100%;
}

.toast.show {
    display: flex;
}

.toast.hide {
    display: none;
}

.toast-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    flex: 1;
}

.toast-icon {
    font-size: 1.2rem;
    flex-shrink: 0;
}

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

.toast-title {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.25rem;
    font-size: 0.9rem;
}

.toast-message {
    color: var(--text-secondary);
    font-size: 0.8rem;
    word-wrap: break-word;
}

.toast-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1.2rem;
    padding: 0.25rem;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 4px;
    flex-shrink: 0;
}

.toast-close:hover {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

/* Utilities */
.hidden {
    display: none !important;
}

.text-sm {
    font-size: 0.8rem;
}

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

.w-full {
    width: 100%;
}


/* Responsive design */
@media (max-width: 768px) {
    .container {
        padding: 0 0.25rem;
    }

    .card {
        padding: 1rem;
    }

    .btn-group {
        flex-direction: column;
    }

    .btn-group .btn {
        min-width: auto;
    }

    .model-source-selector {
        flex-direction: column;
        gap: 0.5rem;
    }

    .metrics-row {
        flex-direction: column;
        gap: 0.5rem;
    }

    .toast-container {
        top: 0.5rem;
        right: 0.5rem;
        left: 0.5rem;
        max-width: none;
    }

    .modal-content {
        margin: 0.5rem;
    }
}

@media (max-width: 480px) {
    .card {
        padding: 0.75rem;
    }

    .btn {
        padding: 0.625rem 1rem;
        font-size: 0.8rem;
    }

    .form-select,
    .form-input {
        padding: 0.625rem 0.875rem;
        font-size: 0.8rem;
    }
}


/* Focus visible for accessibility */
.btn:focus-visible,
.form-select:focus-visible,
.form-input:focus-visible {
    outline: 2px solid var(--accent-primary);
    outline-offset: 2px;
}