/* ===================================
   Gems Hub - Main Stylesheet
   Color Scheme: Shades of Blue
   =================================== */

:root {
    /* Blue Color Palette */
    --primary-blue: #1e3a8a;
    --medium-blue: #2563eb;
    --light-blue: #3b82f6;
    --pale-blue: #93c5fd;
    --soft-blue: #dbeafe;
    --mint-blue: #eff6ff;
    
    /* Neutral Colors */
    --white: #ffffff;
    --off-white: #f8f9fa;
    --light-gray: #e0e0e0;
    --medium-gray: #6c757d;
    --dark-gray: #343a40;
    --black: #1a1a1a;
    
    /* Accent Colors */
    --accent-gold: #d4af37;
    --success-blue: #3b82f6;
    --warning-orange: #f0ad4e;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    
    /* Layout */
    --sidebar-width: 250px;
    --top-nav-height: 50px;
    --transition-speed: 0.3s;
}

/* ===================================
   Base Styles
   =================================== */

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    font-size: 0.95rem;
    line-height: 1.5;
    color: var(--dark-gray);
    background-color: var(--off-white);
    overflow-x: hidden;
    overflow-y: auto;
}

a {
    text-decoration: none;
    color: inherit;
    transition: color var(--transition-speed);
}

a:hover {
    color: var(--medium-blue);
}

h1, h2, h3, h4, h5, h6 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-sm);
    font-weight: 600;
    line-height: 1.3;
}

h1 { font-size: 2.2rem; }
h2 { font-size: 1.8rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.3rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 1rem; }

/* ===================================
   Top Navigation
   =================================== */

.top-nav {
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--medium-blue) 100%);
    color: var(--white);
    height: var(--top-nav-height);
    display: flex;
    align-items: center;
    padding: 0 var(--spacing-md);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
}

.top-nav-content {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.top-nav-link {
    color: var(--white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 4px;
    font-weight: 500;
    transition: all var(--transition-speed);
}

.top-nav-link:hover,
.top-nav-link.active {
    background-color: rgba(255, 255, 255, 0.2);
    color: var(--white);
}

.nav-separator {
    color: var(--pale-blue);
    font-weight: 300;
}

/* ===================================
   Container Layout
   =================================== */

.container {
    display: flex;
    min-height: calc(100vh - var(--top-nav-height) - 200px);
    overflow: visible;
    position: relative;
}

/* ===================================
   Sidebar Menu
   =================================== */

.sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, var(--mint-blue) 0%, var(--soft-blue) 100%);
    border-right: none;
    transition: width var(--transition-speed), transform var(--transition-speed);
    position: sticky;
    top: var(--top-nav-height);
    height: calc(100vh - var(--top-nav-height));
    overflow-y: auto;
    overflow-x: visible;
    z-index: 200;
}

/* Allow submenu to extend beyond sidebar without scrollbar */
.sidebar::-webkit-scrollbar {
    width: 8px;
}

.sidebar::-webkit-scrollbar-track {
    background: var(--soft-blue);
}

.sidebar::-webkit-scrollbar-thumb {
    background: var(--light-blue);
    border-radius: 4px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--medium-blue);
}

.sidebar.collapsed {
    width: 60px;
}

.sidebar-header {
    padding: var(--spacing-lg) var(--spacing-md);
    background-color: var(--primary-blue);
    color: var(--white);
    border-bottom: none;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.sidebar-header h2 {
    color: var(--white);
    margin: 0;
    font-size: 1.5rem;
    white-space: nowrap;
    overflow: hidden;
    transition: opacity var(--transition-speed);
}

.sidebar.collapsed .sidebar-header h2 {
    opacity: 0;
}

.menu-toggle-btn {
    background: none;
    border: none;
    color: var(--white);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform var(--transition-speed);
}

.menu-toggle-btn:hover {
    transform: scale(1.1);
}

.sidebar-menu {
    padding: var(--spacing-md) 0;
    overflow: visible;
}

.menu-list {
    list-style: none;
    overflow: visible;
}

.menu-item {
    position: relative;
    overflow: visible;
}

.menu-item.has-submenu {
    position: relative;
}

.menu-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--primary-blue);
    font-weight: 500;
    border-left: none;
    transition: all var(--transition-speed);
    white-space: nowrap;
}

.sidebar.collapsed .menu-link {
    justify-content: center;
    padding: var(--spacing-sm);
}

.sidebar.collapsed .menu-text {
    display: none;
}

.menu-icon {
    font-size: 1.2rem;
    min-width: 24px;
    margin-right: var(--spacing-sm);
}

.sidebar.collapsed .menu-icon {
    margin-right: 0;
}

.menu-link:hover {
    background-color: var(--pale-blue);
    color: var(--primary-blue);
}

.menu-link.active {
    background-color: var(--light-blue);
    color: var(--white);
}

.submenu-arrow {
    font-size: 1.2rem;
    transition: transform var(--transition-speed);
}

.menu-item.open .submenu-arrow {
    transform: rotate(90deg);
}

/* Submenu Styles - Display on Right Side on Click */
.submenu {
    list-style: none;
    position: fixed;
    /* Place submenu flush against the sidebar with no gap */
    left: calc(var(--sidebar-width));
    min-width: 220px;
    background: linear-gradient(180deg, var(--mint-blue) 0%, var(--soft-blue) 100%);
    /* No border and no rounded corners to meet design requirement */
    border: none;
    border-radius: 0;
    box-shadow: none;
    display: none;
    z-index: 300;
    padding: 0;
    pointer-events: auto;
}

/* Show submenu when parent has 'open' class (set by JavaScript click) */
.menu-item.open > .submenu {
    display: block !important;
    pointer-events: auto;
}

.submenu-item {
    border-bottom: none;
}

.submenu-link {
    display: block;
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--medium-blue);
    font-size: 0.9rem;
    transition: all var(--transition-speed);
    white-space: nowrap;
}

.submenu-link:hover {
    background-color: var(--soft-blue);
    color: var(--primary-blue);
}

.submenu-link.active {
    background-color: var(--pale-blue);
    color: var(--primary-blue);
    font-weight: 600;
}

/* ===================================
   Hamburger Menu Toggle
   =================================== */

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: var(--medium-blue);
    border: none;
    padding: var(--spacing-sm);
    border-radius: 4px;
    cursor: pointer;
    position: fixed;
    top: calc(var(--top-nav-height) + var(--spacing-sm));
    left: var(--spacing-sm);
    z-index: 101;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

.menu-toggle span {
    width: 25px;
    height: 3px;
    background-color: var(--white);
    border-radius: 2px;
    transition: all var(--transition-speed);
}

.menu-toggle:hover {
    background: var(--light-blue);
}

/* ===================================
   Main Content
   =================================== */

.main-content {
    flex: 1;
    padding: var(--spacing-xl);
    background-color: var(--white);
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    position: relative;
    z-index: 1;
}

.hero-section {
    background: linear-gradient(135deg, var(--soft-blue) 0%, var(--mint-blue) 100%);
    padding: var(--spacing-xl);
    border-radius: 8px;
    margin-bottom: var(--spacing-xl);
    border-left: 5px solid var(--medium-blue);
}

.hero-section h1 {
    color: var(--primary-blue);
    margin-bottom: var(--spacing-md);
}

.hero-section p {
    color: var(--dark-gray);
    font-size: 1.1rem;
}

.content-section {
    margin-bottom: var(--spacing-xl);
}

.card-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.card {
    background: var(--white);
    border: 2px solid var(--pale-blue);
    border-radius: 8px;
    padding: var(--spacing-md);
    transition: all var(--transition-speed);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(30, 58, 138, 0.15);
    border-color: var(--medium-blue);
}

.card h3 {
    color: var(--medium-blue);
    margin-bottom: var(--spacing-sm);
}

.card p {
    color: var(--medium-gray);
}

/* ===================================
   Lists
   =================================== */

.info-list {
    list-style: none;
    margin-top: var(--spacing-md);
}

.info-list li {
    padding: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
    background-color: var(--mint-blue);
    border-left: 4px solid var(--light-blue);
    border-radius: 4px;
}

.info-list li strong {
    color: var(--primary-blue);
}

/* ===================================
   Disclaimer Footer
   =================================== */

.disclaimer {
    background: linear-gradient(180deg, var(--primary-blue) 0%, var(--medium-blue) 100%);
    color: var(--white);
    padding: var(--spacing-xl) var(--spacing-md);
    margin-top: auto;
}

.disclaimer-content {
    max-width: 1200px;
    margin: 0 auto;
}

.disclaimer h3 {
    color: var(--white);
    margin-bottom: var(--spacing-md);
    font-size: 1.5rem;
}

.disclaimer p {
    margin-bottom: var(--spacing-sm);
    line-height: 1.6;
    color: var(--soft-blue);
    font-size: 0.9rem;
}

.copyright {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--light-blue);
    text-align: center;
    font-size: 0.9rem;
    color: var(--pale-blue);
}

/* ===================================
   Responsive Design
   =================================== */

@media (max-width: 768px) {
    .sidebar {
        position: fixed;
        left: 0;
        top: var(--top-nav-height);
        transform: translateX(-100%);
        z-index: 99;
    }
    
    .sidebar.active {
        transform: translateX(0);
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .main-content {
        padding: var(--spacing-md);
        padding-top: calc(var(--spacing-xl) + 40px);
    }
    
    .top-nav-content {
        font-size: 0.9rem;
    }
    
    .card-grid {
        grid-template-columns: 1fr;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
}

@media (max-width: 480px) {
    :root {
        --spacing-xl: 2rem;
        --spacing-lg: 1.5rem;
    }
    
    .hero-section {
        padding: var(--spacing-md);
    }
    
    .top-nav-link {
        padding: var(--spacing-xs);
        font-size: 0.85rem;
    }
    
    .nav-separator {
        display: none;
    }
}

/* ===================================
   Utility Classes
   =================================== */

.text-center { text-align: center; }
.text-blue { color: var(--medium-blue); }
.bg-blue { background-color: var(--soft-blue); }
.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }

/* Monochrome SVG menu icons should inherit current text color */
.menu-icon svg {
    width: 20px;
    height: 20px;
    vertical-align: middle;
    fill: currentColor;
}

.menu-icon img {
    width: 20px;
    height: 20px;
}

/* Top color swatch (diamond) styling: make SVG slightly larger and give the diamond path a visible border
   The surrounding wrapper is intentionally borderless; the diamond SVG carries the border so the shape reads
   clearly on any background. */
.color-swatch {
    /* fallback safety if template inline styles vary - doubled size */
    width: 96px;
    height: 96px;
}
.color-swatch .gem-icon {
    /* keep the SVG slightly smaller than the wrapper */
    width: 92px;
    height: 92px;
    display: block;
}
.color-swatch .gem-icon path {
    /* slightly stronger border scaled for larger size */
    stroke: rgba(0,0,0,0.14);
    stroke-width: 2.8px;
    stroke-linejoin: round;
    /* tiny outer shadow to help contrast on very bright fills */
    filter: drop-shadow(0 1px 0 rgba(255,255,255,0.15));
}
.color-swatch.active .gem-icon path {
    /* increase stroke prominence when active */
    stroke: rgba(0,0,0,0.22);
    stroke-width: 3.6px;
}

/* Rarity arrow indicators: visible on any background via border and padding */
.rarity-arrows { margin-left: 0.35rem; font-size: 0.85rem; display: inline-flex; gap: 0.15rem; align-items: center; }
.rarity-indicator {
    display: inline-block;
    padding: 0 4px;
    border: 1px solid rgba(0,0,0,0.35);
    border-radius: 3px;
    line-height: 1;
    font-size: 0.85rem;
    background: rgba(255,255,255,0.15);
}
.rarity-very-rare { color: #0b8a0b; font-weight: 700; }
.rarity-rare { color: #0b8a0b; font-weight: 600; }
.rarity-uncommon { color: #c62828; }
.rarity-common { color: #c62828; }

/* Gem color chip adjustments */
.gem-color-chip { display: inline-flex; align-items: center; gap: 0.4rem; padding: 0.2rem 0.5rem; border-radius: 12px; text-decoration: none; }

/* Gem color link: neutral readable color next to a mini-swatch */
.gem-color-link { color: var(--dark-gray); text-decoration: none; margin-right: 0.4rem; display: inline-flex; align-items: center; gap: 0.35rem; }
.gem-color-link:hover { text-decoration: underline; }

/* Color pill: name and rarity arrows inside a rounded colored box */
.color-pill {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.25rem 0.6rem;
    border-radius: 999px;
    margin-right: 0.6rem;
    font-size: 0.85rem;
    line-height: 1;
    text-decoration: none;
    border: 1px solid rgba(0,0,0,0.08);
    box-shadow: 0 1px 2px rgba(0,0,0,0.04);
}
.color-pill .pill-name { font-weight: 600; }
.color-pill .rarity-arrows { display: inline-flex; gap: 0.2rem; align-items: center; }
.color-pill .rarity-indicator { padding: 0 4px; border-radius: 3px; border: 1px solid rgba(0,0,0,0.35); background: rgba(255,255,255,0.85); font-size: 0.75rem; line-height: 1; }

/* Layout: make gem name and colors appear on one line */
.gem-line {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    flex-wrap: nowrap; /* prefer single line; allow overflow / scrolling if needed */
}
.gem-name { font-weight: 700; color: var(--primary-blue); white-space: nowrap; }
.sep { color: var(--medium-gray); margin-right: 0.25rem; }
.gem-colors { display: inline-flex; align-items: center; gap: 0.4rem; flex-wrap: nowrap; }

@media (max-width: 480px) {
    .gem-line { flex-wrap: wrap; }
    .gem-colors { flex-wrap: wrap; }
}

/* Data table used on investment rankings and other lists */
.data-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: var(--spacing-md);
}
.data-table th,
.data-table td {
    /* Add 1 extra pixel to readable padding to avoid letter overlap */
    padding: calc(0.45rem + 1px);
    text-align: left;
    vertical-align: middle;
    border-bottom: 1px solid var(--light-gray);
}
.data-table thead th {
    background: var(--soft-blue);
    color: var(--primary-blue);
    font-weight: 700;
}

/* Investment tier color: VERY BULLISH should be dark green */
.tier.very-bullish {
    color: #0b8a0b; /* dark green */
    font-weight: 800;
}