/* Premium TradeGrid UI CSS */
:root {
    --bg-color: #f8fafc;
    --surface-color: #ffffff;
    --border-color: #e2e8f0;
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --accent-color: #0ea5e9;
    --accent-gradient: linear-gradient(135deg, #001f3f 0%, #0ea5e9 100%);
    --success-gradient: linear-gradient(135deg, #10b981 0%, #059669 100%);
    --warning-gradient: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
    --glass-blur: blur(0px);
}

body {
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    letter-spacing: -0.025em;
    color: var(--text-primary);
}

/* Glassmorphism Cards */
.card {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.05);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    color: var(--text-primary);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0, 31, 63, 0.1);
}

.bg-primary { background: var(--accent-gradient) !important; border:none; }
.bg-success { background: var(--success-gradient) !important; border:none; }

/* Sidebar styling */
#sidebar-wrapper {
    min-height: 100vh;
    width: 260px;
    background: #ffffff !important;
    border-right: 1px solid var(--border-color) !important;
    position: fixed;
    z-index: 100;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    overflow-y: auto;
    height: 100vh;
    box-shadow: 4px 0 20px rgba(0,0,0,0.03);
}

.sidebar-heading {
    padding: 1rem 1.25rem;
    font-size: 1.4rem;
    font-weight: 800;
    border-bottom: 1px solid var(--border-color) !important;
}

.list-group-item {
    background: transparent !important;
    color: var(--text-secondary) !important;
    border: none;
    padding: 0.5rem 1.25rem;
    font-weight: 500;
    transition: all 0.2s ease;
    border-left: 4px solid transparent;
    font-size: 0.9rem;
}

.list-group-item i {
    font-size: 1.1rem;
    vertical-align: text-bottom;
}

.list-group-item:hover, .list-group-item.active {
    color: #001f3f !important;
    background: #f1f5f9 !important;
    border-left: 4px solid #0ea5e9;
}

/* Page Layout */
#page-content-wrapper {
    margin-left: 260px;
    width: calc(100% - 260px);
    min-height: 100vh;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.navbar {
    background: rgba(15, 23, 42, 0.5) !important;
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color) !important;
}

.nav-link {
    color: var(--text-primary) !important;
    font-weight: 500;
}

/* Tables */
.table {
    --bs-table-color: var(--text-primary);
    --bs-table-bg: transparent;
    --bs-table-hover-color: var(--text-primary);
    --bs-table-hover-bg: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    margin-bottom: 0;
}

.table > :not(caption) > * > * {
    background-color: transparent;
    border-bottom-color: var(--border-color);
    padding: 1rem;
    vertical-align: middle;
    color: var(--text-primary);
}

.table > thead {
    background: rgba(255, 255, 255, 0.02);
}
.table > thead > tr > th {
    color: var(--text-secondary);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.75rem;
    letter-spacing: 0.05em;
    border-bottom: 1px solid var(--border-color);
}

/* Form Elements */
.form-control, .form-select {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 8px;
    padding: 0.75rem 1rem;
    transition: all 0.2s ease;
}

.form-control:focus, .form-select:focus {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--accent-color);
    box-shadow: 0 0 0 0.25rem rgba(99, 102, 241, 0.25);
    color: var(--text-primary);
}

.form-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
}

/* Buttons */
.btn-primary {
    background: var(--accent-gradient);
    border: none;
    border-radius: 8px;
    padding: 0.6rem 1.5rem;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
    background: var(--accent-gradient);
}

.btn-success {
    background: var(--success-gradient);
    border: none;
    border-radius: 8px;
    font-weight: 600;
}

/* Modals */
.modal-content {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5);
}
.modal-header {
    border-bottom: 1px solid var(--border-color);
}
.modal-footer {
    border-top: 1px solid var(--border-color);
}
.modal-title {
    color: var(--text-primary);
}

/* Utils */
.text-muted {
    color: var(--text-secondary) !important;
}

/* Sidebar Scrolling and Toggle */
#sidebar-wrapper {
    overflow-y: auto;
    height: 100vh;
}

#sidebar-wrapper::-webkit-scrollbar {
    width: 6px;
}
#sidebar-wrapper::-webkit-scrollbar-track {
    background: transparent;
}
#sidebar-wrapper::-webkit-scrollbar-thumb {
    background: rgba(255,255,255,0.2);
    border-radius: 10px;
}

/* Sidebar Toggle Logic */
#wrapper.toggled #sidebar-wrapper {
    margin-left: -260px;
}
#wrapper.toggled #page-content-wrapper {
    margin-left: 0;
    width: 100%;
}

@media (max-width: 768px) {
    #sidebar-wrapper {
        margin-left: -260px;
    }
    #page-content-wrapper {
        margin-left: 0;
        width: 100%;
    }
    #wrapper.toggled #sidebar-wrapper {
        margin-left: 0;
    }
}