/* ─── Base ─── */
:root {
    --bg: var(--tg-theme-bg-color, #1a1a2e);
    --bg2: var(--tg-theme-secondary-bg-color, #16213e);
    --text: var(--tg-theme-text-color, #e8e8e8);
    --hint: var(--tg-theme-hint-color, #7a7a8a);
    --link: var(--tg-theme-link-color, #6c9fff);
    --btn: var(--tg-theme-button-color, #6c5ce7);
    --btn-text: var(--tg-theme-button-text-color, #ffffff);
    --green: #00d4aa;
    --red: #ff4757;
    --orange: #ffa502;
    --card-bg: rgba(255,255,255,0.05);
    --border: rgba(255,255,255,0.08);
    --radius: 12px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
    line-height: 1.5;
    overflow-x: hidden;
    -webkit-tap-highlight-color: transparent;
    padding-bottom: 70px;
}

/* ─── Loader ─── */
.loader {
    position: fixed; inset: 0; z-index: 100;
    display: flex; align-items: center; justify-content: center;
    background: var(--bg);
    transition: opacity 0.3s;
}
.loader.hidden { opacity: 0; pointer-events: none; }
.spinner {
    width: 32px; height: 32px;
    border: 3px solid var(--border);
    border-top-color: var(--btn);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ─── Screens ─── */
.screen { display: none; padding: 16px; animation: fadeIn 0.2s ease; }
.screen.active { display: block; }
@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }

/* ─── Nav ─── */
.nav {
    position: fixed; bottom: 0; left: 0; right: 0;
    display: flex;
    background: var(--bg2);
    border-top: 1px solid var(--border);
    padding: 4px 0;
    padding-bottom: max(4px, env(safe-area-inset-bottom));
    z-index: 50;
}
.nav-btn {
    flex: 1; display: flex; flex-direction: column; align-items: center; gap: 2px;
    background: none; border: none; color: var(--hint);
    font-size: 10px; padding: 6px 0; cursor: pointer;
    transition: color 0.2s;
}
.nav-btn.active { color: var(--btn); }
.nav-btn svg { width: 22px; height: 22px; }

/* ─── Cards ─── */
.card {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 14px;
    margin-bottom: 10px;
}
.card-header {
    font-size: 12px; color: var(--hint);
    text-transform: uppercase; letter-spacing: 0.5px;
    margin-bottom: 8px;
}
.card-value {
    font-size: 22px; font-weight: 600;
}
.card-row {
    display: flex; justify-content: space-between; align-items: center;
    padding: 6px 0;
}
.card-row + .card-row { border-top: 1px solid var(--border); }
.card-label { color: var(--hint); font-size: 13px; }
.card-data { font-weight: 500; }

/* ─── Status Pill ─── */
.status-pill {
    display: inline-flex; align-items: center; gap: 6px;
    padding: 4px 12px; border-radius: 20px;
    font-size: 12px; font-weight: 600;
}
.status-pill.running { background: rgba(0,212,170,0.15); color: var(--green); }
.status-pill.stopped { background: rgba(255,71,87,0.15); color: var(--red); }
.status-pill .dot {
    width: 8px; height: 8px; border-radius: 50%;
    background: currentColor;
}
.status-pill.running .dot { animation: pulse 2s infinite; }
@keyframes pulse { 0%,100% { opacity: 1; } 50% { opacity: 0.4; } }

/* ─── Buttons ─── */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 6px;
    padding: 12px 20px; border-radius: 10px;
    font-size: 14px; font-weight: 600;
    border: none; cursor: pointer; width: 100%;
    transition: opacity 0.2s, transform 0.1s;
}
.btn:active { transform: scale(0.98); opacity: 0.9; }
.btn-primary { background: var(--btn); color: var(--btn-text); }
.btn-secondary { background: var(--card-bg); color: var(--text); border: 1px solid var(--border); }
.btn-danger { background: rgba(255,71,87,0.15); color: var(--red); }
.btn-success { background: rgba(0,212,170,0.15); color: var(--green); }
.btn-sm { padding: 8px 14px; font-size: 13px; }
.btn-row { display: flex; gap: 8px; margin-top: 10px; }
.btn-row .btn { flex: 1; }

/* ─── Section Header ─── */
.section-header {
    font-size: 18px; font-weight: 700;
    margin-bottom: 12px;
}
.section-sub {
    font-size: 13px; color: var(--hint);
    margin-bottom: 12px;
}

/* ─── Setting Item ─── */
.setting-item {
    display: flex; justify-content: space-between; align-items: center;
    padding: 12px 14px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 8px;
    cursor: pointer;
    transition: background 0.2s;
}
.setting-item:active { background: rgba(255,255,255,0.1); }
.setting-name { font-size: 13px; color: var(--hint); }
.setting-value { font-weight: 600; font-size: 15px; }
.setting-chevron { color: var(--hint); font-size: 18px; }

/* ─── Toggle Switch ─── */
.toggle-row {
    display: flex; justify-content: space-between; align-items: center;
    padding: 14px;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    margin-bottom: 8px;
}
.toggle-label { font-size: 14px; }
.toggle {
    width: 44px; height: 24px;
    background: rgba(255,255,255,0.15);
    border-radius: 12px;
    position: relative; cursor: pointer;
    transition: background 0.3s;
    border: none;
}
.toggle.on { background: var(--green); }
.toggle::after {
    content: '';
    width: 20px; height: 20px;
    background: white; border-radius: 50%;
    position: absolute; top: 2px; left: 2px;
    transition: transform 0.3s;
}
.toggle.on::after { transform: translateX(20px); }

/* ─── Period Tabs ─── */
.period-tabs {
    display: flex; gap: 6px; margin-bottom: 14px;
}
.period-tab {
    flex: 1; padding: 8px; border-radius: 8px;
    background: var(--card-bg); border: 1px solid var(--border);
    color: var(--hint); font-size: 13px; font-weight: 600;
    text-align: center; cursor: pointer;
    transition: all 0.2s;
}
.period-tab.active {
    background: var(--btn); color: var(--btn-text);
    border-color: var(--btn);
}

/* ─── Chart ─── */
.chart-container {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px;
    margin-bottom: 10px;
}
.chart-container canvas {
    width: 100% !important;
    height: 200px !important;
}

/* ─── Grid Table ─── */
.grid-table {
    width: 100%; border-collapse: collapse;
    font-size: 12px;
}
.grid-table th {
    color: var(--hint); font-weight: 500;
    text-align: left; padding: 8px 6px;
    border-bottom: 1px solid var(--border);
    font-size: 11px; text-transform: uppercase;
}
.grid-table td {
    padding: 8px 6px;
    border-bottom: 1px solid var(--border);
}
.grid-table tr:last-child td { border-bottom: none; }

/* ─── Orders / Positions ─── */
.order-item {
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: 12px 14px;
    margin-bottom: 8px;
}
.order-side {
    display: inline-block; padding: 2px 8px;
    border-radius: 4px; font-size: 11px; font-weight: 700;
}
.order-side.buy { background: rgba(0,212,170,0.15); color: var(--green); }
.order-side.sell { background: rgba(255,71,87,0.15); color: var(--red); }

/* ─── PnL Colors ─── */
.pnl-positive { color: var(--green); }
.pnl-negative { color: var(--red); }

/* ─── API Status ─── */
.api-ok { color: var(--green); }
.api-off { color: var(--red); }

/* ─── Modal ─── */
.modal-overlay {
    position: fixed; inset: 0; z-index: 200;
    background: rgba(0,0,0,0.6);
    display: flex; align-items: flex-end; justify-content: center;
    animation: fadeIn 0.2s ease;
}
.modal-overlay.hidden { display: none; }
.modal {
    background: var(--bg2);
    border-radius: 16px 16px 0 0;
    padding: 20px;
    width: 100%; max-width: 480px;
    animation: slideUp 0.3s ease;
}
@keyframes slideUp { from { transform: translateY(100%); } to { transform: translateY(0); } }
.modal-title { font-size: 16px; font-weight: 700; margin-bottom: 6px; }
.modal-desc { font-size: 13px; color: var(--hint); margin-bottom: 14px; }
.modal-input {
    width: 100%; padding: 12px;
    background: var(--card-bg); border: 1px solid var(--border);
    border-radius: 10px; color: var(--text);
    font-size: 16px; outline: none;
    transition: border-color 0.2s;
}
.modal-input:focus { border-color: var(--btn); }
.modal-error {
    color: var(--red); font-size: 12px;
    margin-top: 6px; padding: 0 4px;
}
.modal-actions { display: flex; gap: 8px; margin-top: 14px; }
.modal-actions .btn { flex: 1; }

/* ─── Empty State ─── */
.empty-state {
    text-align: center; padding: 40px 20px;
    color: var(--hint);
}
.empty-state .icon { font-size: 48px; margin-bottom: 12px; }
.empty-state .text { font-size: 14px; }

/* ─── API Key Input ─── */
.key-input-group { margin-bottom: 14px; }
.key-label { font-size: 12px; color: var(--hint); margin-bottom: 6px; }
.key-input {
    width: 100%; padding: 12px;
    background: var(--card-bg); border: 1px solid var(--border);
    border-radius: 10px; color: var(--text);
    font-size: 14px; font-family: monospace;
    outline: none;
}
.key-input:focus { border-color: var(--btn); }

/* ─── Deal Card ─── */
.deal-card {
    background: linear-gradient(135deg, rgba(108,92,231,0.1), rgba(0,212,170,0.05));
    border: 1px solid rgba(108,92,231,0.3);
    border-radius: var(--radius);
    padding: 14px;
    margin-bottom: 10px;
}
.deal-pnl {
    font-size: 24px; font-weight: 700;
    margin: 8px 0;
}

/* ─── Scrollbar ─── */
::-webkit-scrollbar { width: 4px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 2px; }