@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
    --bg-primary: #0b0e11;
    --bg-secondary: #181a20;
    --bg-tertiary: #2b3139;
    --bg-card: #181a20;
    --border: #2b3139;
    --text-primary: #eaecef;
    --text-secondary: #848e9c;
    --green: #0ecb81;
    --red: #f6465d;
    --yellow: #f0b90b;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
    --radius: 4px;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', sans-serif;
}

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    height: 100vh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

/* Authentication Page */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background: radial-gradient(circle at top, #1e2329, #0b0e11);
}

.auth-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    padding: 40px;
    border-radius: 8px;
    width: 100%;
    max-width: 420px;
    box-shadow: var(--shadow);
}

.auth-header {
    text-align: center;
    margin-bottom: 30px;
}

.auth-header h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--yellow);
    margin-bottom: 8px;
}

.auth-header p {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    color: var(--text-secondary);
    font-size: 0.8rem;
    margin-bottom: 6px;
    font-weight: 600;
}

.form-group input {
    width: 100%;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    padding: 10px 14px;
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--yellow);
}

.btn-primary {
    width: 100%;
    background: var(--yellow);
    color: #1e2329;
    font-weight: 600;
    padding: 12px;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: background 0.2s;
    font-size: 0.95rem;
}

.btn-primary:hover {
    background: #f3c93e;
}

.auth-footer {
    text-align: center;
    margin-top: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.auth-footer a {
    color: var(--yellow);
    text-decoration: none;
}

/* Header UI */
header {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    height: 48px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 20px;
}

.brand-section {
    display: flex;
    align-items: center;
    gap: 10px;
}

.brand-section h1 {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--yellow);
    letter-spacing: 0.5px;
}

.user-section {
    display: flex;
    align-items: center;
    gap: 15px;
}

.user-email {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.btn-outline {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-primary);
    padding: 4px 12px;
    border-radius: var(--radius);
    font-size: 0.8rem;
    cursor: pointer;
}

.btn-outline:hover {
    background: var(--bg-tertiary);
}

/* Professional 3-panel workspace layout */
.workspace {
    display: grid;
    grid-template-columns: 240px minmax(0, 1fr) 300px;
    flex: 1;
    overflow: hidden;
    background: var(--bg-primary);
}

/* Panel Containers */
.panel {
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    min-width: 0;
}

.panel:last-child {
    border-right: none;
}

.panel-header {
    padding: 12px 16px;
    border-bottom: 1px solid var(--border);
    font-size: 0.85rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--text-secondary);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.panel-body {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
}

/* Market Watch / Left Panel */
.market-item {
    display: flex;
    justify-content: space-between;
    padding: 10px 12px;
    border-radius: var(--radius);
    cursor: pointer;
    font-size: 0.85rem;
    margin-bottom: 4px;
}

.market-item:hover, .market-item.active {
    background: var(--bg-tertiary);
}

.market-symbol {
    font-weight: 600;
}

.market-price.up { color: var(--green); }
.market-price.down { color: var(--red); }

/* Center Panel (Chart & Grids) */
.center-panel {
    display: grid;
    grid-template-rows: 60px 250px 1fr;
    border-right: 1px solid var(--border);
    min-width: 0;
}

.ticker-bar {
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    padding: 0 20px;
    gap: 30px;
    font-size: 0.8rem;
}

.ticker-item {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.ticker-label {
    color: var(--text-secondary);
}

.ticker-val {
    font-weight: 600;
    font-size: 0.9rem;
}

.ticker-val.up { color: var(--green); }
.ticker-val.down { color: var(--red); }

.chart-area {
    background: #14151a;
    border-bottom: 1px solid var(--border);
    position: relative;
    overflow: hidden;
}

.chart-area canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    display: block;
}

.grid-table-container {
    background: var(--bg-secondary);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.orders-grid-header {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    font-size: 0.75rem;
    color: var(--text-secondary);
    padding: 8px 16px;
    border-bottom: 1px solid var(--border);
    font-weight: 600;
}

.grid-row-item {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr 1fr;
    font-size: 0.8rem;
    padding: 8px 16px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.02);
}

.grid-row-item.buy { color: var(--green); }
.grid-row-item.sell { color: var(--red); }

/* Right Panel (Trade forms) */
.trade-form-section {
    margin-top: 15px;
}

.trade-form-section label {
    font-size: 0.75rem;
    color: var(--text-secondary);
    display: block;
    margin-bottom: 6px;
}

.btn-green {
    background: var(--green);
    color: white;
    width: 100%;
    padding: 10px;
    font-weight: 600;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
}

.btn-red {
    background: var(--red);
    color: white;
    width: 100%;
    padding: 10px;
    font-weight: 600;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
}

/* Order Book list / transaction log */
.order-book-row {
    display: flex;
    justify-content: space-between;
    font-size: 0.75rem;
    padding: 4px 0;
}

.order-book-row.buy { color: var(--green); }
.order-book-row.sell { color: var(--red); }

/* Toast Notifications */
.toast-container {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
}

.toast {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    padding: 12px 20px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    color: var(--text-primary);
    margin-top: 8px;
    font-size: 0.85rem;
}