/**
 * Custom CSS for Professional Gold Trading Tool
 * Ubuntu VPS Frontend (PHP)
 */

/* ============================================================
   GLOBAL STYLES
   ============================================================ */

:root {
    --primary-color: #0d6efd;
    --success-color: #198754;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #0dcaf0;
    --dark-color: #212529;
    --light-color: #f8f9fa;
    --gold-color: #ffd700;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: #f5f5f5;
    min-height: 100vh;
}

/* ============================================================
   NAVBAR STYLES
   ============================================================ */

.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar-brand {
    font-weight: 600;
}

/* ============================================================
   CARD STYLES
   ============================================================ */

.card {
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.08);
    transition: transform 0.2s, box-shadow 0.2s;
    margin-bottom: 20px;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.12);
}

.card-header {
    border-radius: 8px 8px 0 0 !important;
    font-weight: 600;
    padding: 15px 20px;
}

.card-body {
    padding: 20px;
}

/* ============================================================
   FUNDING RATE CARDS
   ============================================================ */

.funding-rate-card {
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    transition: all 0.3s ease;
}

.funding-rate-card:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.funding-rate-card.border-danger {
    border-left: 4px solid var(--danger-color) !important;
}

.funding-rate-card.border-success {
    border-left: 4px solid var(--success-color) !important;
}

/* ============================================================
   POSITION CARDS
   ============================================================ */

.position-card {
    background: white;
    transition: all 0.3s ease;
    border: 1px solid #e0e0e0;
}

.position-card:hover {
    border-color: var(--primary-color);
    box-shadow: 0 4px 12px rgba(13, 110, 253, 0.15);
}

.position-card .badge {
    font-size: 0.85rem;
}

/* ============================================================
   FORM STYLES
   ============================================================ */

.form-label {
    font-weight: 600;
    color: #333;
    margin-bottom: 8px;
}

.form-control, .form-select {
    border-radius: 6px;
    border: 1px solid #ced4da;
    padding: 10px 15px;
    transition: border-color 0.3s, box-shadow 0.3s;
}

.form-control:focus, .form-select:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.15);
}

/* Radio button groups */
.btn-check:checked + .btn-outline-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-check:checked + .btn-outline-success {
    background-color: var(--success-color);
    color: white;
}

.btn-check:checked + .btn-outline-danger {
    background-color: var(--danger-color);
    color: white;
}

/* Leverage buttons */
.leverage-btn {
    transition: all 0.3s ease;
}

.leverage-btn.active {
    background-color: var(--warning-color);
    border-color: var(--warning-color);
    color: #000;
    font-weight: 600;
}

.leverage-btn:hover {
    background-color: var(--warning-color);
    border-color: var(--warning-color);
    color: #000;
}

/* ============================================================
   BUTTON STYLES
   ============================================================ */

.btn {
    border-radius: 6px;
    padding: 8px 16px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-lg {
    padding: 12px 24px;
    font-size: 1.1rem;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.15);
}

.btn:active {
    transform: translateY(0);
}

.btn-success {
    background: linear-gradient(135deg, #198754 0%, #157347 100%);
}

.btn-danger {
    background: linear-gradient(135deg, #dc3545 0%, #bb2d3b 100%);
}

.btn-warning {
    background: linear-gradient(135deg, #ffc107 0%, #ffca2c 100%);
    color: #000;
}

/* ============================================================
   BADGE STYLES
   ============================================================ */

.badge {
    padding: 6px 12px;
    border-radius: 4px;
    font-weight: 600;
    font-size: 0.85rem;
}

.badge-success {
    background-color: var(--success-color);
}

.badge-danger {
    background-color: var(--danger-color);
}

/* ============================================================
   TEXT COLORS
   ============================================================ */

.text-success {
    color: var(--success-color) !important;
    font-weight: 600;
}

.text-danger {
    color: var(--danger-color) !important;
    font-weight: 600;
}

.text-warning {
    color: #ff9800 !important;
    font-weight: 600;
}

/* ============================================================
   CALCULATION PREVIEW
   ============================================================ */

#calculation-preview {
    border: 2px solid #e0e0e0;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
}

#calculation-preview .card-title {
    color: var(--primary-color);
    font-weight: 700;
}

#calculation-preview p {
    font-size: 0.95rem;
}

#calculation-preview strong {
    color: #333;
}

#calculation-preview span {
    color: var(--primary-color);
    font-weight: 600;
}

/* ============================================================
   POSITIONS CONTAINER
   ============================================================ */

#positions-container {
    max-height: 600px;
    overflow-y: auto;
}

#positions-container::-webkit-scrollbar {
    width: 8px;
}

#positions-container::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

#positions-container::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 4px;
}

#positions-container::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* ============================================================
   LOADING SPINNER
   ============================================================ */

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border-width: 0.15rem;
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-spinner {
    background: white;
    padding: 30px;
    border-radius: 8px;
    text-align: center;
}

/* ============================================================
   ALERTS & NOTIFICATIONS
   ============================================================ */

.alert {
    border-radius: 6px;
    border-left: 4px solid;
    padding: 15px 20px;
}

.alert-success {
    border-left-color: var(--success-color);
    background-color: #d1f0e0;
    color: #155724;
}

.alert-danger {
    border-left-color: var(--danger-color);
    background-color: #f8d7da;
    color: #721c24;
}

.alert-warning {
    border-left-color: var(--warning-color);
    background-color: #fff3cd;
    color: #856404;
}

.alert-info {
    border-left-color: var(--info-color);
    background-color: #d1ecf1;
    color: #0c5460;
}

/* Toast notifications */
.toast {
    border-radius: 6px;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.toast-success {
    border-left: 4px solid var(--success-color);
}

.toast-error {
    border-left: 4px solid var(--danger-color);
}

/* ============================================================
   TABLE STYLES
   ============================================================ */

.table {
    font-size: 0.9rem;
}

.table thead {
    background-color: #f8f9fa;
    border-bottom: 2px solid #dee2e6;
}

.table thead th {
    font-weight: 700;
    color: #495057;
    padding: 12px 8px;
}

.table tbody tr {
    transition: background-color 0.2s;
}

.table tbody tr:hover {
    background-color: #f1f3f5;
}

.table-responsive {
    border-radius: 6px;
}

/* ============================================================
   RESPONSIVE DESIGN
   ============================================================ */

@media (max-width: 768px) {
    .card-body {
        padding: 15px;
    }

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

    .btn-group .btn {
        border-radius: 6px !important;
        margin-bottom: 5px;
    }

    #positions-container {
        max-height: 400px;
    }

    .navbar-brand {
        font-size: 0.9rem;
    }

    .table {
        font-size: 0.8rem;
    }
}

/* ============================================================
   ANIMATION STYLES
   ============================================================ */

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.3s ease;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
    }
    50% {
        opacity: 0.5;
    }
}

.pulse {
    animation: pulse 2s infinite;
}

@keyframes slideDown {
    from {
        max-height: 0;
        opacity: 0;
    }
    to {
        max-height: 500px;
        opacity: 1;
    }
}

.slide-down {
    animation: slideDown 0.3s ease;
}

/* ============================================================
   UTILITY CLASSES
   ============================================================ */

.cursor-pointer {
    cursor: pointer;
}

.no-select {
    user-select: none;
}

.shadow-sm {
    box-shadow: 0 2px 4px rgba(0,0,0,0.08) !important;
}

.shadow-md {
    box-shadow: 0 4px 8px rgba(0,0,0,0.12) !important;
}

.shadow-lg {
    box-shadow: 0 8px 16px rgba(0,0,0,0.15) !important;
}

/* ============================================================
   CUSTOM SCROLLBAR (Global)
   ============================================================ */

::-webkit-scrollbar {
    width: 10px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* ============================================================
   PRINT STYLES
   ============================================================ */

@media print {
    .navbar, .btn, .alert {
        display: none;
    }

    .card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}