:root {
    --primary-color: #009688;
    --primary-hover: #00796b;
    --secondary-color: #007DDB;
    --bg-color: #f3f4f6;
    --card-bg: #ffffff;
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --border-color: #e5e7eb;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

body {
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
    margin: 0;
    padding: 0;
    min-height: 100vh; /* Changed from height to min-height */
    display: flex;
    flex-direction: column;
}

/* Scrollbar */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}

/* Navigation */
#menu {
    background: #ffffff;
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    position: sticky;
    top: 0;
    width: 100%;
}

.layui-nav {
    background-color: #ffffff !important;
    padding: 0 20px !important;
    display: flex;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
    flex-wrap: nowrap;
    overflow-x: auto; /* Allow horizontal scroll on mobile */
    -webkit-overflow-scrolling: touch;
}

.layui-nav .layui-nav-item {
    line-height: 60px;
    flex-shrink: 0; /* Prevent shrinking on mobile */
}

.layui-nav .layui-nav-item a {
    color: var(--text-main) !important;
    font-weight: 500;
    font-size: 15px;
    transition: color 0.2s;
    padding: 0 20px !important;
}

.layui-nav .layui-nav-item a:hover,
.layui-nav .layui-this a {
    color: var(--primary-color) !important;
    background-color: transparent !important;
    color: var(--primary-color) !important; /* Force color on active */
}

.layui-nav .layui-this::after {
    background-color: var(--primary-color) !important;
    height: 3px !important;
}

/* Main Container */
.main-container {
    max-width: 1400px;
    margin: 20px auto;
    padding: 0 20px;
    width: 100%;
    box-sizing: border-box;
    flex: 1;
    display: flex;
    flex-direction: column;
}

/* Index Page Hero */
.hero-section {
    text-align: center;
    padding: 60px 20px;
    background: linear-gradient(135deg, #009688 0%, #007DDB 100%);
    color: white;
    border-radius: var(--radius-lg);
    margin-bottom: 30px;
    box-shadow: var(--shadow-lg);
}

.hero-title {
    font-size: 2.5rem;
    font-weight: 800;
    margin-bottom: 1rem;
    letter-spacing: -0.025em;
}

.hero-subtitle {
    font-size: 1.1rem;
    opacity: 0.9;
    max-width: 600px;
    margin: 0 auto 2rem;
}

.search-card {
    background: white;
    padding: 2rem;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    max-width: 800px;
    margin: -40px auto 0;
    position: relative;
    z-index: 10;
}

/* Input Styles */
.layui-input {
    height: 48px;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
    padding-left: 15px;
    transition: all 0.2s;
}

.layui-input:focus {
    border-color: var(--primary-color) !important;
    box-shadow: 0 0 0 3px rgba(0, 150, 136, 0.1);
}

/* Buttons */
.layui-btn {
    height: 48px;
    line-height: 48px;
    border-radius: var(--radius-md);
    font-weight: 600;
    box-shadow: var(--shadow-sm);
    transition: all 0.2s;
}

.layui-btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Content Layout (Search Pages) */
#main {
    height: auto !important;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.layui-form {
    background: white;
    padding: 20px;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin: 0 0 20px 0 !important;
    width: 100% !important;
    box-sizing: border-box;
}

.content {
    width: 100% !important;
    height: auto !important;
    margin: 0 !important;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 20px;
    overflow: visible !important;
}

.content > div {
    width: 100% !important;
    margin: 0 !important;
    float: none !important;
    height: auto !important;
}
.details {
    grid-column: span 2;
}
.pane-header {
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--text-main);
}
.emphasize {
    color: var(--primary-color);
}
.tabs-large .layui-tab {
    background: #ffffff;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    padding: 16px;
}
.tabs-large .layui-tab-title {
    display: flex;
    gap: 8px;
    border: none;
    margin-bottom: 12px;
}
.tabs-large .layui-tab-title li {
    padding: 10px 16px;
    border: 1px solid var(--border-color);
    border-radius: 999px;
    font-weight: 600;
    color: var(--text-main);
    min-width: 150px;
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1.2;
    min-height: 40px;
    cursor: pointer;
    transition: all 0.2s;
}
.tabs-large .layui-tab-title .layui-this::after{
    display: none !important;
}
.tabs-large .layui-tab-title li:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}
.tabs-large .layui-tab-title .layui-this {
    background: var(--primary-color);
    color: #ffffff;
    border-color: var(--primary-color);
}
.tabs-large .layui-tab-title li .icon {
    margin-right: 6px;
    display: inline-block;
    vertical-align: middle;
    line-height: 1;
}
.sticky-tabs {
    position: sticky;
    top: 70px;
    z-index: 10;
}
.tab-callout {
    margin-bottom: 10px;
    padding: 10px 12px;
    border-radius: var(--radius-md);
    background: #f0fdfa;
    color: var(--primary-color);
    font-weight: 600;
    text-align: center;
}

.layui-elem-field {
    border: none !important;
    background: white;
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    height: 100% !important;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.layui-elem-field legend {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-main);
    padding: 15px 20px;
    border-bottom: 1px solid var(--border-color);
    width: 100%;
    box-sizing: border-box;
    margin: 0;
}

.layui-field-box {
    padding: 15px !important;
    max-height: 70vh !important;
    min-height: 240px;
    overflow-y: auto !important;
}

/* List Items */
.layui-field-box > div > div {
    padding: 8px 12px;
    border-radius: var(--radius-md);
    margin-bottom: 4px;
    color: var(--text-main);
    font-size: 0.95rem;
    border: 1px solid transparent;
}

.layui-field-box > div > div:hover {
    background-color: #f0fdfa;
    color: var(--primary-color) !important;
    border-color: #ccfbf1;
}

/* Select highlight */
.select {
    color: var(--primary-color) !important;
    font-weight: bold;
    background-color: #f0fdfa;
}

/* Version List Buttons */
.version_list {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    justify-content: center;
    margin-top: 20px;
}

.version_list button {
    background-color: #ffffff !important;
    color: var(--text-main) !important;
    border: 1px solid var(--border-color) !important;
    margin: 0 !important;
    padding: 10px 24px !important;
    border-radius: 999px !important;
    font-weight: 700 !important;
    height: auto !important;
    line-height: inherit !important;
    box-shadow: var(--shadow-sm) !important;
}

.version_list button:hover {
    border-color: var(--primary-color) !important;
    color: var(--primary-color) !important;
    transform: translateY(-1px);
    box-shadow: var(--shadow-md) !important;
}
.nav-link-disabled {
    opacity: 0.6 !important;
    cursor: not-allowed !important;
}

/* Cards inside panels */
.layui-card {
    box-shadow: none !important;
    border: 1px solid #e5e7eb;
    border-radius: var(--radius-md);
}

.layui-card-header {
    border-bottom: 1px solid #e5e7eb !important;
    font-weight: 600;
}

/* Footer */
.site-footer {
    text-align: center;
    padding: 20px;
    background: #ffffff;
    border-top: 1px solid var(--border-color);
    margin-top: auto;
    color: var(--text-muted);
    font-size: 0.9rem;
}
 
.helper {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: 8px;
}

/* Select sizing */
.layui-form .layui-col-md1 {
    width: auto !important;
    min-width: 220px;
}
.layui-form select,
.layui-form-select,
.layui-form-select .layui-input {
    min-width: 220px;
}

/* Responsive */
@media (max-width: 1024px) {
    .content {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .content {
        grid-template-columns: 1fr;
        height: auto !important;
    }
    
    .layui-field-box {
        height: 400px !important; /* Smaller height on mobile */
    }

    .hero-title {
        font-size: 1.8rem;
    }
    .main-container {
        padding: 0 10px;
    }
    .layui-form {
        padding: 15px;
    }
    .layui-col-md1, .layui-col-md4, .layui-col-md6 {
        width: 100% !important;
        margin-bottom: 10px;
        float: none !important;
        display: block;
    }
    
    .layui-input, .layui-btn, .layui-form-select .layui-input {
        width: 100%;
        margin-bottom: 10px;
    }
    
    /* Navigation on mobile */
    .layui-nav {
        padding: 0 10px !important;
    }
    .layui-nav .layui-nav-item a {
        padding: 0 15px !important;
        font-size: 14px;
    }
}