:root {
    --bg-main: #0b0e14;
    --bg-card: #181a20;
    --bg-input: #2b313a;
    --accent: #f0b90b; /* Binance Sariq */
    --accent-hover: #fcd535;
    --text-primary: #eaecef;
    --text-secondary: #848e9c;
    --success: #0ecb81;
    --danger: #f6465d;
    --info: #3b82f6;
    --border-color: rgba(255, 255, 255, 0.08);
    --radius: 14px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--bg-main);
    color: var(--text-primary);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", sans-serif;
    font-size: 14px;
    line-height: 1.5;
    min-height: 100vh;
    padding: 12px;
    display: flex;
    justify-content: center;
}

.app-container {
    width: 100%;
    max-width: 460px;
    display: flex;
    flex-direction: column;
    gap: 14px;
    padding-bottom: 40px;
}

/* Card Styles */
.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: var(--radius);
    padding: 16px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
}

.card-title {
    font-size: 0.95rem;
    font-weight: 700;
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 12px;
}

/* Brand Header */
.brand-header {
    text-align: center;
    padding: 6px 0;
}

.brand-title {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--accent);
    letter-spacing: 0.5px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.brand-subtitle {
    font-size: 0.78rem;
    color: var(--text-secondary);
    margin-top: 2px;
}

/* Badges */
.shield-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background: rgba(14, 203, 129, 0.12);
    color: var(--success);
    border: 1px solid rgba(14, 203, 129, 0.25);
    border-radius: 20px;
    padding: 4px 10px;
    font-size: 0.72rem;
    font-weight: 600;
}

.tag-badge {
    font-size: 0.68rem;
    padding: 2px 6px;
    border-radius: 4px;
    font-weight: 600;
}

.tag-standard {
    background: rgba(132, 142, 156, 0.15);
    color: var(--text-secondary);
}

.tag-custom {
    background: rgba(240, 185, 11, 0.15);
    color: var(--accent);
    border: 1px solid rgba(240, 185, 11, 0.3);
}

.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    display: inline-block;
}

.status-active {
    background-color: var(--success);
    box-shadow: 0 0 8px var(--success);
}

.status-stopped {
    background-color: var(--danger);
    box-shadow: 0 0 8px var(--danger);
}

/* PIN Screen */
.pin-view {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 28px 16px;
    gap: 16px;
}

.lock-icon {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgba(240, 185, 11, 0.1);
    border: 2px solid var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 26px;
}

.pin-input {
    width: 100%;
    max-width: 240px;
    background-color: var(--bg-input);
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    font-size: 22px;
    letter-spacing: 6px;
    text-align: center;
    padding: 10px;
    border-radius: 12px;
    outline: none;
    transition: all 0.2s;
}

.pin-input:focus {
    border-color: var(--accent);
    box-shadow: 0 0 10px rgba(240, 185, 11, 0.25);
}

/* Form Controls */
.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-bottom: 12px;
}

.form-label {
    font-size: 0.78rem;
    color: var(--text-secondary);
    font-weight: 600;
}

.input-container {
    position: relative;
    display: flex;
    align-items: center;
}

.form-input, .form-select {
    width: 100%;
    background-color: var(--bg-input);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    color: var(--text-primary);
    padding: 10px 12px;
    font-size: 0.85rem;
    outline: none;
    transition: border-color 0.2s;
}

.form-input:focus, .form-select:focus {
    border-color: var(--accent);
}

.input-icon-btn {
    position: absolute;
    right: 10px;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 1rem;
    padding: 4px;
}

/* Engine Big Controls */
.engine-controls {
    display: flex;
    gap: 8px;
    margin-bottom: 14px;
}

.btn-engine-start {
    flex: 1;
    background: linear-gradient(135deg, #0ecb81 0%, #059669 100%);
    color: #fff;
    border: none;
    border-radius: 12px;
    padding: 14px;
    font-size: 0.95rem;
    font-weight: 800;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(14, 203, 129, 0.3);
    transition: transform 0.1s, opacity 0.2s;
}

.btn-engine-start:active {
    transform: scale(0.97);
}

.btn-engine-stop {
    flex: 1;
    background: linear-gradient(135deg, #f6465d 0%, #dc2626 100%);
    color: #fff;
    border: none;
    border-radius: 12px;
    padding: 14px;
    font-size: 0.95rem;
    font-weight: 800;
    cursor: pointer;
    box-shadow: 0 4px 14px rgba(246, 70, 93, 0.3);
    transition: transform 0.1s, opacity 0.2s;
}

.btn-engine-stop:active {
    transform: scale(0.97);
}

/* Segmented Control (Mode Switch) */
.segmented-control {
    display: flex;
    background: var(--bg-input);
    border-radius: 10px;
    padding: 4px;
    gap: 4px;
}

.segment-btn {
    flex: 1;
    padding: 8px 10px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    font-size: 0.78rem;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.segment-btn.active.simulation {
    background: rgba(59, 130, 246, 0.2);
    color: #60a5fa;
    border: 1px solid rgba(59, 130, 246, 0.4);
}

.segment-btn.active.real {
    background: rgba(240, 185, 11, 0.2);
    color: var(--accent);
    border: 1px solid rgba(240, 185, 11, 0.4);
}

/* Buttons */
.btn-primary {
    background: var(--accent);
    color: #000;
    border: none;
    border-radius: 10px;
    padding: 12px 16px;
    font-size: 0.9rem;
    font-weight: 700;
    cursor: pointer;
    width: 100%;
    transition: background 0.2s, transform 0.1s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.btn-primary:active {
    transform: scale(0.98);
    background: var(--accent-hover);
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 10px;
    padding: 10px 14px;
    font-size: 0.82rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}

.btn-secondary:active {
    background: rgba(255, 255, 255, 0.1);
}

.btn-danger-outline {
    background: rgba(246, 70, 93, 0.1);
    border: 1px solid rgba(246, 70, 93, 0.3);
    color: var(--danger);
    border-radius: 8px;
    padding: 4px 8px;
    font-size: 0.75rem;
    cursor: pointer;
}

/* Dashboard View */
.dashboard-view {
    display: none;
    flex-direction: column;
    gap: 14px;
}

.user-profile {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.user-meta {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: linear-gradient(135deg, #f0b90b 0%, #d49e00 100%);
    color: #000;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 800;
    font-size: 1rem;
}

/* Open Positions Cards */
.positions-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.position-card {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--accent);
    border-radius: 10px;
    padding: 12px;
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.position-card.positive {
    border-left-color: var(--success);
}

.position-card.negative {
    border-left-color: var(--danger);
}

.pos-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.pos-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 6px;
    font-size: 0.78rem;
    color: var(--text-secondary);
}

.pos-val {
    color: var(--text-primary);
    font-weight: 600;
}

.pnl-badge {
    font-weight: 800;
    font-size: 0.95rem;
}

.pnl-positive {
    color: var(--success);
}

.pnl-negative {
    color: var(--danger);
}

/* Filter Tabs */
.filter-tabs {
    display: flex;
    gap: 6px;
    margin: 8px 0;
}

.tab-btn {
    flex: 1;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    padding: 6px 8px;
    border-radius: 8px;
    font-size: 0.72rem;
    cursor: pointer;
    text-align: center;
    transition: all 0.2s;
}

.tab-btn.active {
    background: rgba(240, 185, 11, 0.15);
    border-color: var(--accent);
    color: var(--accent);
    font-weight: 700;
}

/* Pairs List & Container */
.pairs-container {
    max-height: 380px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 6px;
    padding-right: 4px;
}

.pairs-container::-webkit-scrollbar {
    width: 4px;
}
.pairs-container::-webkit-scrollbar-thumb {
    background: var(--bg-input);
    border-radius: 4px;
}

.pair-card {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 12px;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    transition: background 0.15s;
}

.pair-card:hover {
    background: rgba(255, 255, 255, 0.04);
}

.pair-info {
    display: flex;
    align-items: center;
    gap: 8px;
}

.pair-symbol {
    font-weight: 700;
    font-size: 0.88rem;
    letter-spacing: 0.3px;
}

.pair-actions {
    display: flex;
    align-items: center;
    gap: 10px;
}

/* iOS Style Switch */
.switch {
    position: relative;
    display: inline-block;
    width: 42px;
    height: 24px;
}

.switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.slider {
    position: absolute;
    cursor: pointer;
    top: 0; left: 0; right: 0; bottom: 0;
    background-color: #2b313a;
    transition: .25s;
    border-radius: 24px;
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: #ffffff;
    transition: .25s;
    border-radius: 50%;
    box-shadow: 0 2px 4px rgba(0,0,0,0.4);
}

input:checked + .slider {
    background-color: var(--success);
}

input:checked + .slider:before {
    transform: translateX(18px);
}

/* Alerts and Result Box */
.alert-box {
    background: rgba(246, 70, 93, 0.15);
    border: 1px solid var(--danger);
    color: #ff9da9;
    padding: 10px;
    border-radius: 10px;
    font-size: 0.8rem;
    display: none;
    text-align: center;
}

.success-box {
    background: rgba(14, 203, 129, 0.12);
    border: 1px solid rgba(14, 203, 129, 0.3);
    color: var(--success);
    padding: 10px;
    border-radius: 10px;
    font-size: 0.8rem;
    display: none;
    text-align: center;
}