:root {
    --bg-main: #0a0a0b;
    --bg-secondary: #141416;
    --bg-glass: rgba(20, 20, 22, 0.7);
    --border-color: rgba(255, 255, 255, 0.08);
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --text-main: #f3f4f6;
    --text-muted: #9ca3af;
    --accent-green: #10b981;
    --accent-red: #ef4444;
}

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
    font-size: 0.85rem;
    height: 100vh;
    max-height: 100vh;
    overflow: hidden;
    letter-spacing: -0.01em;
}

/* Utilities */
.tracking-tight {
    letter-spacing: -0.04em;
}

.tracking-wider {
    letter-spacing: 0.05em;
}

.fs-7 {
    font-size: 0.8rem;
}

.bg-dark-glass {
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

.bg-dark-soft {
    background-color: rgba(255, 255, 255, 0.03);
}

.border-dark-subtle {
    border-color: var(--border-color) !important;
}

/* Navbar */
.custom-navbar {
    background-color: var(--bg-main);
    border-bottom: 1px solid var(--border-color) !important;
    height: 64px;
}

.navbar-brand {
    color: var(--text-main) !important;
    font-size: 1.25rem;
}

.navbar-brand i {
    color: var(--primary-color);
}

/* Layout Container */
.layout-container {
    height: calc(100vh - 54px);
    max-height: calc(100vh - 54px);
    overflow: hidden;
}

/* Splash Screen */
.splash-bg {
    background: radial-gradient(circle at center, #1f1f22 0%, var(--bg-main) 100%);
}

.splash-title {
    background: linear-gradient(135deg, #fff 0%, #9ca3af 100%);
    background-clip: text;
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

/* Sidebar */
.sidebar {
    background-color: var(--bg-secondary) !important;
    border-right: 1px solid var(--border-color);
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.2);
    z-index: 10;
    display: flex;
    flex-direction: column;
    height: 100%;
    max-height: 100%;
}

.offcanvas-body {
    display: flex;
    flex-direction: column;
    flex-grow: 1;
    min-height: 0;
    overflow: hidden;
}

/* Portfolio List */
.user-portfolio-list {
    border-bottom-left-radius: 12px;
    border-bottom-right-radius: 12px;
    padding: 0 0.5rem 0.5rem 0.5rem !important;
    overflow-y: auto !important;
    overflow-x: hidden !important;
    flex-grow: 1;
    min-height: 0;
}

.user-portfolio-list .list-group-item {
    background-color: transparent;
    border: 1px solid transparent;
    border-bottom: 1px solid var(--border-color);
    color: var(--text-muted);
    transition: all 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: pointer;
    border-radius: 8px;
    margin-bottom: 2px;
    padding: 0.35rem 0.75rem !important;
}

.user-portfolio-list .list-group-item:hover {
    background-color: rgba(255, 255, 255, 0.02);
    color: var(--text-main);
    transform: translateX(4px);
}

.user-portfolio-list .list-group-item.active {
    background-color: rgba(59, 130, 246, 0.1);
    border-color: rgba(59, 130, 246, 0.2);
    color: var(--primary-color);
}

.user-portfolio-list .list-group-item.active .badge-qty {
    background-color: var(--primary-color) !important;
    color: #fff !important;
}

.badge-qty {
    font-family: 'JetBrains Mono', 'Courier New', monospace;
    font-weight: 500;
    font-size: 0.75rem;
    transition: all 0.2s ease;
}

/* Main Content area */
.main-content {
    background: radial-gradient(circle at 50% 0%, rgba(59, 130, 246, 0.05) 0%, transparent 50%), var(--bg-main);
    overflow: hidden;
    padding: 1rem !important;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.chart-glass {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    border-radius: 12px !important;
    padding: 1rem !important;
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
}

.chart-wrapper {
    flex: 1;
    position: relative;
    min-height: 0;
    height: 100%;
    overflow: hidden;
}

.chart-wrapper canvas {
    max-width: 100%;
    max-height: 100%;
}

/* Buttons */
.btn-primary {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.shadow-glow {
    box-shadow: 0 0 15px rgba(59, 130, 246, 0.4);
    transition: all 0.2s ease;
}

.btn-primary.shadow-glow:hover {
    background-color: var(--primary-hover);
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.6);
    transform: translateY(-1px);
}

/* Timeframe Group */
.timeframe-group .btn-outline-light {
    color: var(--text-muted);
    border-color: var(--border-color);
    font-size: 0.8rem;
    font-weight: 500;
}

.timeframe-group .btn-outline-light:hover {
    background-color: rgba(255, 255, 255, 0.05);
    color: var(--text-main);
}

.timeframe-group .btn-check:checked+.btn-outline-light {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: #fff;
    box-shadow: 0 0 10px rgba(59, 130, 246, 0.3);
}

/* Modal */
.custom-modal {
    background-color: var(--bg-secondary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.custom-input {
    background-color: rgba(0, 0, 0, 0.2) !important;
    border: 1px solid var(--border-color) !important;
    color: var(--text-main) !important;
    border-radius: 8px;
    padding: 0.75rem 1rem;
}

.custom-input:focus {
    box-shadow: 0 0 0 0.25rem rgba(59, 130, 246, 0.25) !important;
    border-color: var(--primary-color) !important;
}

.custom-radio {
    position: relative;
    padding-left: 0 !important;
}

.custom-radio .form-check-input {
    display: none;
}

.custom-radio .form-check-label {
    background-color: rgba(0, 0, 0, 0.2);
    border: 1px solid var(--border-color);
    cursor: pointer;
    transition: all 0.2s;
    color: var(--text-muted);
}

.custom-radio .form-check-input:checked+.form-check-label {
    background-color: rgba(59, 130, 246, 0.1);
    border-color: var(--primary-color);
    color: var(--primary-color);
    font-weight: 600;
}

#buyOp:checked+label {
    color: var(--accent-green);
    border-color: var(--accent-green);
    background: rgba(16, 185, 129, 0.1);
}

#sellOp:checked+label {
    color: var(--accent-red);
    border-color: var(--accent-red);
    background: rgba(239, 68, 68, 0.1);
}

/* Scrollbars */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}

::-webkit-scrollbar-track {
    background: transparent;
}

::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: 10px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}