/* ===================================================
   Binance Copy Trading System - Design System
   Dark Financial Theme
   =================================================== */

/* --- CSS Variables --- */
:root {
    --bg-primary:      #0f1923;
    --bg-secondary:    #1a2332;
    --bg-tertiary:     #243447;
    --bg-hover:        rgba(255,255,255,0.04);
    --border-color:    #2a3a4e;
    --border-light:    #1e2d3d;

    --text-primary:    #e6edf3;
    --text-secondary:  #8b949e;
    --text-muted:      #484f58;

    --accent-blue:     #58a6ff;
    --accent-green:    #3fb950;
    --accent-red:      #f85149;
    --accent-orange:   #d29922;
    --accent-purple:   #bc8cff;
    --accent-cyan:     #39d2c0;

    --gradient-primary: linear-gradient(135deg, #58a6ff 0%, #bc8cff 100%);
    --gradient-danger:  linear-gradient(135deg, #f85149 0%, #d29922 100%);
    --gradient-success: linear-gradient(135deg, #3fb950 0%, #39d2c0 100%);

    --shadow-sm:  0 1px 3px rgba(0,0,0,0.3);
    --shadow-md:  0 4px 12px rgba(0,0,0,0.4);
    --shadow-lg:  0 8px 24px rgba(0,0,0,0.5);

    --radius-sm:  6px;
    --radius-md:  8px;
    --radius-lg:  12px;
    --radius-xl:  16px;

    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Microsoft YaHei', sans-serif;
    --font-mono: 'SF Mono', 'Cascadia Code', 'Consolas', monospace;

    --transition: 0.2s ease;
}

/* --- Reset & Base --- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

html { font-size: 14px; -webkit-font-smoothing: antialiased; }

body {
    font-family: var(--font-sans);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

a { color: var(--accent-blue); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--accent-cyan); }

h1, h2, h3, h4 { color: var(--text-primary); font-weight: 600; line-height: 1.3; }

code {
    background: var(--bg-tertiary);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    font-size: 0.9em;
    color: var(--accent-blue);
}

/* --- Layout --- */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 24px;
}
.container.narrow { max-width: 900px; }
.container.wide   { max-width: 1600px; }

/* --- Card --- */
.card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
    margin-bottom: 20px;
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border-color);
}

.card-title {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 8px;
}

.card-actions {
    display: flex;
    gap: 8px;
    align-items: center;
    flex-shrink: 0;
}

.card-body { padding: 0; }
.card-body > p { color: var(--text-secondary); margin-bottom: 12px; }

/* --- Buttons --- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    padding: 8px 20px;
    border-radius: var(--radius-md);
    border: 1px solid transparent;
    font-size: 0.875rem;
    font-weight: 500;
    font-family: var(--font-sans);
    cursor: pointer;
    transition: all var(--transition);
    text-decoration: none;
    line-height: 1.4;
    white-space: nowrap;
}
.btn:hover { transform: translateY(-1px); filter: brightness(1.15); }
.btn:active { transform: translateY(0); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }

.btn-primary   { background: var(--accent-blue); color: #fff; }
.btn-success   { background: var(--accent-green); color: #fff; }
.btn-danger    { background: var(--accent-red); color: #fff; }
.btn-warning   { background: var(--accent-orange); color: #1a1a1a; }
.btn-secondary { background: var(--bg-tertiary); color: var(--text-primary); border-color: var(--border-color); }
.btn-purple    { background: var(--accent-purple); color: #fff; }

.btn-sm { padding: 5px 14px; font-size: 0.8rem; }
.btn-lg { padding: 12px 28px; font-size: 1rem; }
.btn-block { width: 100%; }

.btn-gradient {
    background: var(--gradient-primary);
    color: #fff;
    border: none;
}

/* --- Badge --- */
.badge {
    display: inline-flex;
    align-items: center;
    padding: 3px 10px;
    border-radius: 10px;
    font-size: 0.75rem;
    font-weight: 600;
    white-space: nowrap;
    gap: 4px;
}

.badge-online    { background: rgba(63,185,80,0.15);  color: var(--accent-green); }
.badge-offline   { background: rgba(248,81,73,0.15);   color: var(--accent-red); }
.badge-pending   { background: rgba(210,153,34,0.15);  color: var(--accent-orange); }
.badge-executing { background: rgba(88,166,255,0.15);  color: var(--accent-blue); }
.badge-closing   { background: rgba(188,140,255,0.15); color: var(--accent-purple); }
.badge-closed    { background: rgba(139,148,158,0.15); color: var(--text-secondary); }
.badge-failed    { background: rgba(248,81,73,0.15);   color: var(--accent-red); }
.badge-cancelled { background: rgba(139,148,158,0.15); color: var(--text-secondary); }
.badge-blacklist { background: rgba(139,148,158,0.2);  color: var(--text-secondary); }
.badge-normal    { background: rgba(57,210,192,0.15);  color: var(--accent-cyan); }
.badge-info      { background: rgba(188,140,255,0.15); color: var(--accent-purple); }

.badge-long  { background: rgba(63,185,80,0.15); color: var(--accent-green); }
.badge-short { background: rgba(248,81,73,0.15); color: var(--accent-red); }

/* --- Tables --- */
.table-container { overflow-x: auto; }

table {
    width: 100%;
    border-collapse: collapse;
    background: transparent;
}

th {
    background: var(--bg-tertiary);
    color: var(--text-secondary);
    padding: 12px 14px;
    text-align: left;
    font-weight: 600;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
    border-bottom: 1px solid var(--border-color);
}

td {
    padding: 12px 14px;
    border-bottom: 1px solid var(--border-light);
    font-size: 0.875rem;
    color: var(--text-primary);
    background: transparent;
}

tr:hover td { background: var(--bg-hover); }

.table-empty {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-secondary);
}

/* --- Forms --- */
.form-group {
    margin-bottom: 18px;
}
.form-group label {
    display: block;
    margin-bottom: 6px;
    font-weight: 500;
    color: var(--text-secondary);
    font-size: 0.85rem;
}

input[type="text"],
input[type="number"],
input[type="password"],
input[type="email"],
input[type="date"],
input[type="search"],
select,
textarea {
    width: 100%;
    padding: 10px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-size: 0.9rem;
    font-family: var(--font-sans);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
}
input:focus, select:focus, textarea:focus {
    border-color: var(--accent-blue);
    box-shadow: 0 0 0 3px rgba(88,166,255,0.15);
}
input::placeholder { color: var(--text-muted); }

.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 18px;
}
.form-grid .full-width { grid-column: 1 / -1; }

.form-actions {
    display: flex;
    gap: 12px;
    margin-top: 24px;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
}

/* --- Stat Cards --- */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 16px;
    margin-bottom: 24px;
}
.stats-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

.stat-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 20px;
    position: relative;
    overflow: hidden;
}
.stat-card::before {
    content: '';
    position: absolute;
    top: 0; left: 0;
    width: 100%; height: 3px;
}
.stat-card.primary::before   { background: var(--accent-blue); }
.stat-card.success::before   { background: var(--accent-green); }
.stat-card.warning::before   { background: var(--accent-orange); }
.stat-card.danger::before    { background: var(--accent-red); }
.stat-card.info::before      { background: var(--accent-purple); }

.stat-card .stat-value {
    font-size: 1.6rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 4px;
}
.stat-card .stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* --- Search Box --- */
.search-box {
    display: flex;
    gap: 10px;
    margin-bottom: 20px;
}
.search-box input {
    flex: 1;
}
.search-box .btn { flex-shrink: 0; }

/* --- Pagination --- */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 8px;
    margin-top: 24px;
    padding-top: 20px;
}
.pagination a, .pagination span {
    padding: 8px 14px;
    border-radius: var(--radius-md);
    text-decoration: none;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    font-size: 0.85rem;
    transition: all var(--transition);
}
.pagination a:hover {
    background: var(--accent-blue);
    color: #fff;
    border-color: var(--accent-blue);
}
.pagination .active {
    background: var(--accent-blue);
    color: #fff;
    border-color: var(--accent-blue);
}
.pagination .disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* --- Messages / Alerts --- */
.msg-success { background: rgba(63,185,80,0.1); border: 1px solid rgba(63,185,80,0.3); color: var(--accent-green); padding: 12px 16px; border-radius: var(--radius-md); margin-bottom: 16px; }
.msg-error   { background: rgba(248,81,73,0.1); border: 1px solid rgba(248,81,73,0.3); color: var(--accent-red); padding: 12px 16px; border-radius: var(--radius-md); margin-bottom: 16px; }
.msg-warning { background: rgba(210,153,34,0.1); border: 1px solid rgba(210,153,34,0.3); color: var(--accent-orange); padding: 12px 16px; border-radius: var(--radius-md); margin-bottom: 16px; }
.msg-info    { background: rgba(88,166,255,0.1); border: 1px solid rgba(88,166,255,0.3); color: var(--accent-blue); padding: 12px 16px; border-radius: var(--radius-md); margin-bottom: 16px; }

/* --- Toggle Switch --- */
.switch {
    position: relative;
    display: inline-block;
    width: 44px;
    height: 24px;
}
.switch input { opacity: 0; width: 0; height: 0; }
.slider {
    position: absolute;
    inset: 0;
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    cursor: pointer;
    transition: var(--transition);
}
.slider::before {
    content: '';
    position: absolute;
    width: 18px; height: 18px;
    left: 2px; bottom: 2px;
    background: var(--text-secondary);
    border-radius: 50%;
    transition: var(--transition);
}
input:checked + .slider { background: var(--accent-green); border-color: var(--accent-green); }
input:checked + .slider::before { transform: translateX(20px); background: #fff; }

/* --- Detail Grid --- */
.detail-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
}
.detail-item {
    padding: 12px 0;
    border-bottom: 1px solid var(--border-light);
}
.detail-item .detail-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
    text-transform: uppercase;
    letter-spacing: 0.3px;
}
.detail-item .detail-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
}

/* --- Toast Notification --- */
.toast-container {
    position: fixed;
    top: 80px; right: 24px;
    z-index: 10000;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.toast {
    padding: 14px 20px;
    border-radius: var(--radius-md);
    color: #fff;
    font-size: 0.9rem;
    font-weight: 500;
    box-shadow: var(--shadow-lg);
    animation: slideIn 0.3s ease;
    min-width: 280px;
    max-width: 420px;
}
.toast-success { background: var(--accent-green); }
.toast-error   { background: var(--accent-red); }
.toast-warning { background: var(--accent-orange); color: #1a1a1a; }

/* --- Log Viewer (Terminal) --- */
.log-container {
    background: #0d1117;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: #c9d1d9;
    max-height: 600px;
    overflow-y: auto;
    line-height: 1.7;
}
.log-entry-error   { color: var(--accent-red); }
.log-entry-warning { color: var(--accent-orange); }
.log-entry-info    { color: var(--accent-green); }
.log-entry-debug   { color: var(--accent-blue); }

/* --- Utilities --- */
.text-success { color: var(--accent-green) !important; }
.text-danger  { color: var(--accent-red) !important; }
.text-warning { color: var(--accent-orange) !important; }
.text-muted   { color: var(--text-secondary) !important; }
.text-center  { text-align: center; }
.text-right   { text-align: right; }
.text-bold    { font-weight: 700; }
.text-mono    { font-family: var(--font-mono); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-center { align-items: center; justify-content: center; }
.flex-between { justify-content: space-between; }
.flex-wrap { flex-wrap: wrap; }
.gap-sm { gap: 8px; }
.gap-md { gap: 12px; }
.gap-lg { gap: 20px; }

.mt-sm { margin-top: 8px; }
.mt-md { margin-top: 16px; }
.mt-lg { margin-top: 24px; }
.mb-sm { margin-bottom: 8px; }
.mb-md { margin-bottom: 16px; }

.w-full { width: 100%; }

/* --- Scrollbar --- */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--bg-tertiary); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--text-muted); }

/* --- Animations --- */
@keyframes slideIn {
    from { opacity: 0; transform: translateX(40px); }
    to   { opacity: 1; transform: translateX(0); }
}
@keyframes slideUp {
    from { opacity: 0; transform: translateY(10px); }
    to   { opacity: 1; transform: translateY(0); }
}
@keyframes spin {
    to { transform: rotate(360deg); }
}
@keyframes fadeIn {
    from { opacity: 0; }
    to   { opacity: 1; }
}
@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.animate-fade-in { animation: fadeIn 0.4s ease; }
.animate-slide-up { animation: slideUp 0.3s ease; }

/* --- Direction Radio Cards --- */
.direction-group {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
}
.direction-card {
    padding: 16px;
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
}
.direction-card:hover { border-color: var(--text-muted); }
.direction-card input { display: none; }
.direction-card.selected-long { border-color: var(--accent-green); background: rgba(63,185,80,0.08); }
.direction-card.selected-short { border-color: var(--accent-red); background: rgba(248,81,73,0.08); }
.direction-card .dir-label { font-weight: 600; font-size: 1rem; }

/* --- Responsive --- */
@media (max-width: 768px) {
    .container { padding: 12px; }
    .stats-grid { grid-template-columns: 1fr 1fr; }
    .stats-grid.cols-4 { grid-template-columns: 1fr 1fr; }
    .form-grid { grid-template-columns: 1fr; }
    .card-header { flex-direction: column; align-items: flex-start; gap: 12px; }
    .card-actions { width: 100%; }
    .detail-grid { grid-template-columns: 1fr; }
}