:root {
    --bg-color: #f3f4f6;
    --text-main: #1f2937;
    --text-muted: #6b7280;
    --card-bg: #ffffff;
    --border-color: #e5e7eb;
    --accent-color: #2563eb;
    --accent-hover: #1d4ed8;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --font-family: 'Inter', sans-serif;
    --border-radius: 12px;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
}

:root[data-theme="theme1"] {
    --bg-color: #fffaf0;
    --text-main: #7E549F;
    --text-muted: #C1549C;
    --card-bg: #ffffff;
    --border-color: #fcd3c1;
    --accent-color: #FA634F;
    --accent-hover: #C1549C;
    --success-color: #FFC83E;
    --danger-color: #FA634F;
}

:root[data-theme="theme2"] {
    --bg-color: #eef7fa;
    --text-main: #3A3E98;
    --text-muted: #527C8C;
    --card-bg: #ffffff;
    --border-color: #badded;
    --accent-color: #5256BC;
    --accent-hover: #3A3E98;
    --success-color: #4AB1D8;
    --danger-color: #3A3E98;
}

:root[data-theme="theme3"] {
    --bg-color: #fdf6f5;
    --text-main: #182880;
    --text-muted: #2653AF;
    --card-bg: #ffffff;
    --border-color: #f8d4d1;
    --accent-color: #2653AF;
    --accent-hover: #182880;
    --success-color: #FFC130;
    --danger-color: #ECA39D;
}

:root[data-theme="theme4"] {
    --bg-color: #FAF1D9;
    --text-main: #28463C;
    --text-muted: #6B8F4E;
    --card-bg: #ffffff;
    --border-color: #dbe8cd;
    --accent-color: #6B8F4E;
    --accent-hover: #28463C;
    --success-color: #B1D182;
    --danger-color: #28463C;
}

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

body {
    font-family: var(--font-family);
    background-color: var(--bg-color);
    color: var(--text-main);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
}

/* Header Styles */
.app-header {
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border-color);
    padding: 1rem 1.5rem;
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 10;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header-title-area {
    display: flex;
    flex-direction: column;
}

.logout-btn {
    color: var(--text-muted);
    transition: color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.5rem;
    border-radius: 6px;
}

.logout-btn:hover {
    color: var(--danger-color);
    background-color: #fee2e2;
}

.main-nav {
    display: flex;
    gap: 1.5rem;
    margin-bottom: 0.25rem;
}

.main-tab {
    text-decoration: none;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-muted);
    padding-bottom: 0.5rem;
    border-bottom: 3px solid transparent;
    transition: all 0.2s;
}

.main-tab:hover {
    color: var(--text-main);
}

.main-tab.active {
    color: var(--text-main);
    border-bottom-color: var(--accent-color);
}

.nav-item {
    position: relative;
    display: flex;
    align-items: center;
}

.dropdown-content {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--card-bg);
    min-width: 200px;
    box-shadow: var(--shadow-md);
    border-radius: 6px;
    border: 1px solid var(--border-color);
    z-index: 20;
    padding: 0.5rem 0;
}

.dropdown-content a {
    color: var(--text-main);
    padding: 0.5rem 1rem;
    text-decoration: none;
    display: block;
    font-size: 0.9rem;
    transition: background 0.2s;
}

.dropdown-content a:hover {
    background-color: var(--bg-color);
}

.dropdown-content a.active-sub {
    font-weight: 600;
    color: var(--accent-color);
    background-color: #eff6ff;
}

.dropdown:hover .dropdown-content {
    display: block;
}

.date-display {
    font-size: 0.875rem;
    color: var(--text-muted);
}

/* Dashboard Layout */
.dashboard {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1.5rem;
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.5rem;
}

.robot-dashboard {
    grid-template-columns: 1fr 1fr;
    align-items: start;
}

/* Widget Styles */
.widget {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    border: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.widget:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.widget-header {
    padding: 1rem 1.25rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #f9fafb;
}

.widget-header h2 {
    font-size: 1rem;
    font-weight: 600;
    margin: 0;
}

.refresh-btn {
    background: none;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: color 0.2s, background-color 0.2s;
}

.refresh-btn:hover {
    color: var(--accent-color);
    background-color: #eff6ff;
}

.refresh-btn.spin svg {
    animation: spin 1s linear infinite;
}

@keyframes spin {
    100% {
        transform: rotate(360deg);
    }
}

.widget-content {
    padding: 1.5rem 1.25rem;
    flex-grow: 1;
}

.widget-footer {
    padding: 0.75rem 1.25rem;
    border-top: 1px solid var(--border-color);
    background-color: #f9fafb;
    color: var(--text-muted);
    font-size: 0.75rem;
    text-align: right;
}

/* Specific Crypto Widget */
.price-container {
    display: flex;
    align-items: baseline;
    gap: 0.25rem;
    margin-bottom: 0.5rem;
}

.price-currency {
    font-size: 1.25rem;
    font-weight: 500;
    color: var(--text-muted);
}

.price-value {
    font-size: 2.25rem;
    font-weight: 700;
    letter-spacing: -0.025em;
}

.price-details {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 0.875rem;
}

.price-usd {
    color: var(--text-muted);
}

.price-change {
    font-weight: 500;
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
    background-color: #f3f4f6;
}

.price-change.positive {
    color: var(--success-color);
    background-color: #d1fae5;
}

.price-change.negative {
    color: var(--danger-color);
    background-color: #fee2e2;
}

.bid-ask-container {
    display: flex;
    justify-content: space-between;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.bid-ask-container>div {
    display: flex;
    flex-direction: column;
}

.bid-ask-container .label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.bid-ask-container .value {
    font-weight: 600;
    font-size: 1rem;
}

.bid-ask-container .value-small {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 0.125rem;
}

.chart-container {
    margin-top: 1.5rem;
    position: relative;
    height: 150px;
    width: 100%;
}

/* Placeholder Widget */
.placeholder-widget {
    border: 2px dashed var(--border-color);
    background-color: transparent;
    box-shadow: none;
    cursor: pointer;
}

.placeholder-widget:hover {
    border-color: var(--accent-color);
    background-color: #eff6ff;
    box-shadow: none;
    transform: none;
}

.placeholder-content {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    min-height: 150px;
    gap: 0.5rem;
}

.placeholder-widget:hover .placeholder-content {
    color: var(--accent-color);
}

/* Portfolio Widget */
.wallet-setup {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.wallet-desc {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.wallet-input {
    padding: 0.5rem 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: var(--font-family);
    font-size: 0.875rem;
    width: 100%;
}

.wallet-input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
}

.btn-primary {
    background-color: var(--accent-color);
    color: white;
    border: none;
    border-radius: 6px;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s;
    width: 100%;
}

.btn-primary:hover {
    background-color: var(--accent-hover);
}

.portfolio-balance {
    text-align: center;
    margin-bottom: 1.5rem;
}

.balance-amount {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--accent-color);
    display: block;
}

.balance-symbol {
    font-size: 1rem;
    font-weight: 500;
    color: var(--text-muted);
}

.portfolio-values {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    background-color: #f9fafb;
    padding: 1rem;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.portfolio-value-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.portfolio-value-item .label {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.portfolio-value-item .value {
    font-weight: 600;
    font-size: 1rem;
}

/* Orderbook & Trades Widget */
.orderbook-header {
    padding-bottom: 0;
    border-bottom: none;
}

.tabs {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    padding-bottom: 0.5rem;
    width: 100%;
}

.tab-btn {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s;
}

.tab-btn:hover {
    color: var(--text-main);
    background: #e5e7eb;
}

.tab-btn.active {
    color: white;
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.chart-controls {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1rem;
    margin-bottom: 0.5rem;
}

.filter-btn {
    background: var(--bg-color);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.25rem 0.75rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s;
}

.filter-btn:hover {
    color: var(--text-main);
    background: #e5e7eb;
}

.filter-btn.active {
    color: white;
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.orderbook-content {
    padding-top: 1rem;
}

.table-header {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 0.5rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
    margin-bottom: 0.5rem;
}

.table-header span,
.orderbook-row span {
    text-align: right;
}

.table-header span:first-child,
.orderbook-row span:first-child {
    text-align: left;
}

.orderbook-row {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1fr;
    gap: 0.5rem;
    font-size: 0.8125rem;
    padding: 0.25rem 0;
    font-variant-numeric: tabular-nums;
}

.orderbook-asks,
.orderbook-bids,
.recent-trades-list {
    display: flex;
    flex-direction: column;
}

.orderbook-asks {
    flex-direction: column-reverse;
    /* Asks typically display highest price at top */
}

.ask-price {
    color: var(--danger-color);
    font-weight: 500;
}

.bid-price {
    color: var(--success-color);
    font-weight: 500;
}

.orderbook-current-price {
    text-align: center;
    font-size: 1.25rem;
    font-weight: 700;
    padding: 0.75rem 0;
    margin: 0.25rem 0;
    border-top: 1px dashed var(--border-color);
    border-bottom: 1px dashed var(--border-color);
}

.loading-text {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.875rem;
    padding: 1rem 0;
}

/* Login Page Styles */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 1rem;
}

.login-container {
    background-color: var(--card-bg);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    width: 100%;
    max-width: 400px;
    padding: 2.5rem 2rem;
}

.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-icon {
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.login-header h1 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.login-header p {
    color: var(--text-muted);
    font-size: 0.875rem;
}

.login-error {
    background-color: #fee2e2;
    color: var(--danger-color);
    padding: 0.75rem;
    border-radius: 6px;
    font-size: 0.875rem;
    margin-bottom: 1.5rem;
    text-align: center;
    border: 1px solid #fca5a5;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    margin-bottom: 0.5rem;
    color: var(--text-main);
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: var(--font-family);
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 2px rgba(37, 99, 235, 0.1);
}

.login-btn {
    font-size: 1rem;
    padding: 0.75rem;
}

.strat-header {
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    background: var(--bg-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background 0.2s, border-radius 0.2s;
    gap: 1rem;
}

.strat-header-left {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
}

.strat-header-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Responsive adjustments */
@media (max-width: 640px) {
    .dashboard {
        margin: 1rem auto;
        padding: 0 1rem;
        grid-template-columns: 1fr;
    }

    .robot-dashboard {
        grid-template-columns: 1fr;
    }

    .trade-details-text {
        font-size: 0.875rem;
    }

    .trade-details-title {
        font-size: 1.125rem !important;
    }


    .app-header {
        padding: 0.75rem 1rem;
    }

    .strat-header {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.75rem;
    }

    .strat-header-left,
    .strat-header-right {
        width: 100%;
        justify-content: space-between;
    }

    .strat-header-left {
        gap: 0.5rem;
    }

    .strat-header-right {
        gap: 0.5rem;
    }
}

/* Wallet Switcher Styles */
.wallet-switcher {
    display: flex;
    background-color: #f3f4f6;
    border-radius: 0.5rem;
    padding: 0.25rem;
    margin-bottom: 1rem;
}

.wallet-switcher-btn {
    flex: 1;
    padding: 0.5rem;
    border: none;
    background: transparent;
    border-radius: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-muted);
    cursor: pointer;
    transition: all 0.2s;
}

.wallet-switcher-btn:hover {
    color: var(--text-color);
}

.wallet-switcher-btn.active {
    background-color: white;
    color: var(--text-color);
    box-shadow: 0 1px 3px rgba(0,0,0,0.1);
}

.wallet-data-transition {
    animation: fadeIn 0.3s ease-in-out;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(-5px); }
    to { opacity: 1; transform: translateY(0); }
}