/* ====== Trading Platform — Dark Theme ====== */
:root {
    --bg-primary: #0f1118;
    --bg-secondary: #1a1d2e;
    --bg-card: #21243a;
    --bg-input: #161824;
    --border: #2a2d40;
    --text-primary: #eaecf2;
    --text-secondary: #8b8fa8;
    --accent: #4f8cff;
    --accent-hover: #3a6fd8;
    --green: #00c897;
    --green-bg: rgba(0,200,151,.12);
    --red: #ff4757;
    --red-bg: rgba(255,71,87,.12);
    --orange: #ffa502;
    --orange-bg: rgba(255,165,2,.12);
    --radius: 10px;
    --transition: 0.2s ease;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
}

/* ====== Layout ====== */
.sidebar {
    position: fixed;
    left: 0; top: 0; bottom: 0;
    width: 240px;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    padding: 24px 16px;
    display: flex;
    flex-direction: column;
    z-index: 100;
}

.sidebar-header { margin-bottom: 32px; }
.sidebar-header h1 {
    font-size: 18px;
    font-weight: 700;
    color: var(--accent);
    letter-spacing: -0.3px;
}
.sidebar-header p {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
}

.sidebar-nav { flex: 1; }
.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 10px 14px;
    border-radius: 8px;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    margin-bottom: 4px;
    transition: var(--transition);
}
.sidebar-nav a:hover { background: var(--bg-card); color: var(--text-primary); }
.sidebar-nav a.active { background: var(--accent); color: #fff; }

.sidebar-nav .icon { width: 20px; text-align: center; font-size: 16px; }

.sidebar-footer {
    border-top: 1px solid var(--border);
    padding-top: 16px;
}
.sidebar-footer .user-info {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 12px;
}
.sidebar-footer .avatar {
    width: 36px; height: 36px;
    border-radius: 50%;
    background: var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 14px;
    color: #fff;
}
.sidebar-footer .user-name { font-size: 13px; font-weight: 500; }
.sidebar-footer .user-role { font-size: 11px; color: var(--text-secondary); }

.btn-logout {
    width: 100%;
    padding: 8px;
    border: 1px solid var(--border);
    border-radius: 6px;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 13px;
    transition: var(--transition);
}
.btn-logout:hover { border-color: var(--red); color: var(--red); }

.main-content {
    margin-left: 240px;
    padding: 32px 40px;
    min-height: 100vh;
}

.page-header {
    margin-bottom: 28px;
}
.page-header h2 {
    font-size: 24px;
    font-weight: 700;
}
.page-header p {
    font-size: 14px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ====== Login Page ====== */
.login-wrapper {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: var(--bg-primary);
}

.login-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 40px;
    width: 400px;
    max-width: 90vw;
}

.login-card .logo {
    text-align: center;
    margin-bottom: 32px;
}
.login-card .logo h1 {
    font-size: 24px;
    font-weight: 700;
    color: var(--accent);
}
.login-card .logo p {
    font-size: 13px;
    color: var(--text-secondary);
    margin-top: 6px;
}

.form-group { margin-bottom: 20px; }
.form-group label {
    display: block;
    font-size: 13px;
    font-weight: 500;
    margin-bottom: 6px;
    color: var(--text-secondary);
}
.form-group input {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-input);
    color: var(--text-primary);
    font-size: 14px;
    transition: var(--transition);
    outline: none;
}
.form-group input:focus { border-color: var(--accent); }
.form-group input::placeholder { color: #4a4d60; }

.btn-primary {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 8px;
    background: var(--accent);
    color: #fff;
    font-size: 14px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
}
.btn-primary:hover { background: var(--accent-hover); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; }

.error-msg {
    background: var(--red-bg);
    color: var(--red);
    padding: 10px 14px;
    border-radius: 6px;
    font-size: 13px;
    margin-bottom: 16px;
    display: none;
}
.error-msg.show { display: block; }

/* ====== Cards ====== */
.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 16px;
    margin-bottom: 28px;
}

.stat-card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 20px;
}

.stat-card .stat-label {
    font-size: 12px;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 8px;
}

.stat-card .stat-value {
    font-size: 28px;
    font-weight: 700;
}

.stat-card .stat-value.green { color: var(--green); }
.stat-card .stat-value.red { color: var(--red); }
.stat-card .stat-value.accent { color: var(--accent); }

.stat-card .stat-sub {
    font-size: 12px;
    color: var(--text-secondary);
    margin-top: 4px;
}

/* ====== Status Badge ====== */
.status-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 12px;
    font-weight: 600;
}
.status-badge.live {
    background: var(--green-bg);
    color: var(--green);
}
.status-badge.off {
    background: var(--red-bg);
    color: var(--red);
}
.status-badge.error {
    background: var(--red-bg);
    color: var(--red);
}
.status-badge.ok {
    background: var(--green-bg);
    color: var(--green);
}

.status-dot {
    width: 8px; height: 8px;
    border-radius: 50%;
    display: inline-block;
}
.status-dot.green { background: var(--green); }
.status-dot.red { background: var(--red); }
.status-dot.orange { background: var(--orange); }

/* ====== Tables ====== */
.data-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
}
.data-table th {
    background: var(--bg-secondary);
    padding: 12px 16px;
    text-align: left;
    font-size: 12px;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}
.data-table td {
    padding: 12px 16px;
    font-size: 13px;
    border-top: 1px solid var(--border);
}
.data-table tr:hover td { background: rgba(255,255,255,0.02); }

/* ====== Settings Section ====== */
.settings-section {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 24px;
    margin-bottom: 20px;
}
.settings-section h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 4px;
}
.settings-section .section-desc {
    font-size: 13px;
    color: var(--text-secondary);
    margin-bottom: 16px;
}

.api-key-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
    margin-bottom: 16px;
}
.api-key-item {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 10px 14px;
    background: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 8px;
}
.api-key-item input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 13px;
    font-family: "SF Mono", "Fira Code", monospace;
    outline: none;
}
.api-key-item .btn-remove {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 18px;
    padding: 0 4px;
    transition: var(--transition);
}
.api-key-item .btn-remove:hover { color: var(--red); }

.btn-add-key {
    padding: 8px 16px;
    border: 1px dashed var(--border);
    border-radius: 8px;
    background: transparent;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 13px;
    transition: var(--transition);
}
.btn-add-key:hover { border-color: var(--accent); color: var(--accent); }

.btn-save {
    padding: 8px 24px;
    border: none;
    border-radius: 8px;
    background: var(--accent);
    color: #fff;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    margin-top: 16px;
}
.btn-save:hover { background: var(--accent-hover); }

.info-row {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
    border-bottom: 1px solid var(--border);
    font-size: 14px;
}
.info-row:last-child { border-bottom: none; }
.info-row .label { color: var(--text-secondary); }
.info-row .value { font-family: "SF Mono", "Fira Code", monospace; font-size: 13px; }

/* ====== Error List ====== */
.error-list {
    max-height: 300px;
    overflow-y: auto;
    margin-top: 12px;
}
.error-item {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    padding: 10px 14px;
    background: var(--red-bg);
    border-radius: 6px;
    margin-bottom: 6px;
    font-size: 12px;
}
.error-item .error-time { color: var(--red); white-space: nowrap; margin-right: 12px; }
.error-item .error-symbol { color: var(--orange); margin-right: 8px; font-weight: 600; }
.error-item .error-msg { color: var(--text-secondary); flex: 1; word-break: break-all; }

/* ====== Toast ====== */
.toast {
    position: fixed;
    bottom: 24px; right: 24px;
    padding: 14px 20px;
    border-radius: 8px;
    font-size: 13px;
    font-weight: 500;
    z-index: 9999;
    animation: slideIn .3s ease;
    max-width: 380px;
}
.toast.success { background: var(--green); color: #fff; }
.toast.error { background: var(--red); color: #fff; }

@keyframes slideIn {
    from { transform: translateY(20px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

/* ====== Responsive ====== */
@media (max-width: 768px) {
    .sidebar { width: 200px; }
    .main-content { margin-left: 200px; padding: 20px; }
    .stats-grid { grid-template-columns: 1fr; }
}