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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--tg-theme-bg-color, #f5f5f5);
    color: var(--tg-theme-text-color, #000000);
    padding: 0;
    margin: 0;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

#app {
    max-width: 100%;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.screen {
    padding: 16px;
    animation: fadeIn 0.3s ease-in;
    flex: 1;
}

.hidden {
    display: none !important;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Header */
.header {
    text-align: center;
    margin-bottom: 24px;
    padding: 20px 0;
}

.header h1 {
    font-size: 26px;
    font-weight: 700;
    margin-bottom: 8px;
    color: var(--tg-theme-text-color, #000);
    letter-spacing: -0.5px;
}

.header p {
    color: var(--tg-theme-hint-color, #666);
    font-size: 14px;
    line-height: 1.5;
}

/* Login Options */
.login-option {
    margin-bottom: 24px;
    padding: 20px;
    background: var(--tg-theme-secondary-bg-color, #ffffff);
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.login-option h3 {
    font-size: 16px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--tg-theme-text-color, #000);
}

.login-description {
    font-size: 13px;
    color: var(--tg-theme-hint-color, #666);
    margin-bottom: 16px;
    line-height: 1.4;
}

.divider {
    text-align: center;
    margin: 24px 0;
    position: relative;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--tg-theme-hint-color, #ddd);
}

.divider span {
    position: relative;
    background: var(--tg-theme-bg-color, #f5f5f5);
    padding: 0 16px;
    color: var(--tg-theme-hint-color, #999);
    font-size: 12px;
    font-weight: 600;
}

/* Top Bar */
.top-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: linear-gradient(135deg, var(--tg-theme-button-color, #0088cc) 0%, var(--tg-theme-button-color, #0066aa) 100%);
    border-radius: 16px;
    margin-bottom: 20px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.account-info {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-size: 13px;
}

.account-info span {
    color: rgba(255, 255, 255, 0.95);
    font-weight: 500;
}

.account-info span:first-child {
    font-size: 11px;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.top-bar-actions {
    display: flex;
    gap: 8px;
}

/* Account Selector */
.account-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    margin-top: 20px;
}

.account-card {
    background: var(--tg-theme-secondary-bg-color, #ffffff);
    border: 2px solid var(--tg-theme-hint-color, #e0e0e0);
    border-radius: 12px;
    padding: 16px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.account-card:hover {
    border-color: var(--tg-theme-button-color, #0088cc);
    background: var(--tg-theme-bg-color, #f5f5f5);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 136, 204, 0.2);
}

.account-card:active {
    transform: translateY(0);
}

.account-type {
    font-size: 14px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--tg-theme-text-color, #000);
}

.account-id {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 4px;
    color: var(--tg-theme-button-color, #0088cc);
    font-family: 'Courier New', monospace;
}

.account-currency {
    font-size: 12px;
    color: var(--tg-theme-hint-color, #666);
    text-transform: uppercase;
    font-weight: 600;
}

/* Form Container */
.form-container {
    background: var(--tg-theme-bg-color, #fff);
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.form-container h2 {
    font-size: 18px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--tg-theme-text-color, #000);
    letter-spacing: -0.3px;
}

/* Form Groups */
.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-size: 13px;
    font-weight: 600;
    color: var(--tg-theme-text-color, #000);
    letter-spacing: 0.2px;
}

.form-group small {
    display: block;
    margin-top: 6px;
    font-size: 11px;
    color: var(--tg-theme-hint-color, #888);
    line-height: 1.4;
}

.form-group small a {
    color: var(--tg-theme-link-color, #0088cc);
    text-decoration: none;
    font-weight: 500;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-bottom: 18px;
}

@media (max-width: 360px) {
    .form-row {
        grid-template-columns: 1fr;
        gap: 18px;
    }
}

/* Input Fields */
.input-field {
    width: 100%;
    padding: 13px 16px;
    border: 2px solid var(--tg-theme-hint-color, #e0e0e0);
    border-radius: 12px;
    font-size: 15px;
    background: var(--tg-theme-bg-color, #fff);
    color: var(--tg-theme-text-color, #000);
    transition: all 0.2s ease;
    -webkit-appearance: none;
    appearance: none;
}

.input-field:focus {
    outline: none;
    border-color: var(--tg-theme-button-color, #0088cc);
    box-shadow: 0 0 0 3px rgba(0, 136, 204, 0.1);
    transform: translateY(-1px);
}

select.input-field {
    cursor: pointer;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%23666' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    padding-right: 40px;
}

/* Buttons */
.btn {
    padding: 14px 24px;
    border: none;
    border-radius: 12px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
    letter-spacing: 0.3px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.btn-primary {
    background: linear-gradient(135deg, var(--tg-theme-button-color, #0088cc) 0%, var(--tg-theme-button-color, #0066aa) 100%);
    color: var(--tg-theme-button-text-color, #ffffff);
    width: 100%;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 136, 204, 0.3);
}

.btn-primary:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(0, 136, 204, 0.2);
}

.btn-secondary {
    background: var(--tg-theme-secondary-bg-color, #f0f0f0);
    color: var(--tg-theme-text-color, #000);
    box-shadow: none;
    border: 2px solid var(--tg-theme-hint-color, #e0e0e0);
    width: 100%;
}

.btn-secondary:hover {
    background: var(--tg-theme-hint-color, #e0e0e0);
}

#historyBtn {
    background: linear-gradient(135deg, #FF9800 0%, #F57C00 100%) !important;
    color: white !important;
    font-weight: 600;
    box-shadow: 0 2px 8px rgba(255, 152, 0, 0.3) !important;
    border: none !important;
    transition: all 0.3s ease;
}

#historyBtn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(255, 152, 0, 0.4) !important;
}

#historyBtn:active {
    transform: translateY(0);
    box-shadow: 0 2px 6px rgba(255, 152, 0, 0.3) !important;
}

.btn-small {
    padding: 10px 18px;
    font-size: 13px;
    border-radius: 10px;
}

.btn-large {
    padding: 16px 24px;
    font-size: 16px;
    margin-top: 12px;
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* Loading State */
.loading {
    position: relative;
    pointer-events: none;
}

.loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid #fff;
    border-top-color: transparent;
    border-radius: 50%;
    animation: spin 0.6s linear infinite;
}

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

/* Responsive */
@media (max-width: 480px) {
    .header h1 {
        font-size: 22px;
    }

    .screen {
        padding: 12px;
    }

    .form-container {
        padding: 16px;
    }

    .top-bar {
        padding: 14px;
    }
}

/* Additional Utility Classes */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }

.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.mb-3 { margin-bottom: 24px; }

/* Card Style for Form Sections */
.card {
    background: var(--tg-theme-bg-color, #fff);
    border-radius: 16px;
    padding: 16px;
    margin-bottom: 16px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    border: 1px solid rgba(0, 0, 0, 0.05);
}

.card-title {
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--tg-theme-text-color, #000);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.7;
}

/* Trade History Styles */
.stats-box {
    background: linear-gradient(135deg, var(--tg-theme-button-color, #0088cc) 0%, var(--tg-theme-button-color, #0066aa) 100%);
    border-radius: 16px;
    padding: 20px;
    margin-bottom: 24px;
    color: white;
}

.stats-box h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
    color: rgba(255, 255, 255, 0.95);
}

.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.stat-label {
    font-size: 12px;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 600;
}

.stat-value {
    font-size: 18px;
    font-weight: 700;
    letter-spacing: -0.5px;
}

.trades-list {
    margin-top: 24px;
}

.trades-list h3 {
    font-size: 16px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--tg-theme-text-color, #000);
}

.trade-item {
    background: var(--tg-theme-secondary-bg-color, #ffffff);
    border-left: 4px solid;
    border-radius: 12px;
    padding: 16px;
    margin-bottom: 12px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.2s ease;
}

.trade-item.won {
    border-left-color: #10b981;
    background: rgba(16, 185, 129, 0.05);
}

.trade-item.lost {
    border-left-color: #ef4444;
    background: rgba(239, 68, 68, 0.05);
}

.trade-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 12px;
}

.trade-market {
    font-size: 14px;
    font-weight: 700;
    color: var(--tg-theme-text-color, #000);
}

.trade-status {
    font-size: 12px;
    font-weight: 700;
    padding: 4px 12px;
    border-radius: 8px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.trade-status.won {
    background: #10b981;
    color: white;
}

.trade-status.lost {
    background: #ef4444;
    color: white;
}

.trade-details {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    font-size: 12px;
    color: var(--tg-theme-hint-color, #666);
}

.trade-detail-item {
    display: flex;
    justify-content: space-between;
}

.trade-detail-label {
    font-weight: 600;
    opacity: 0.7;
}

.trade-detail-value {
    font-weight: 700;
    color: var(--tg-theme-text-color, #000);
}

.empty-state {
    text-align: center;
    padding: 40px 20px;
    color: var(--tg-theme-hint-color, #999);
}

.empty-state-icon {
    font-size: 48px;
    margin-bottom: 16px;
}

.empty-state-text {
    font-size: 14px;
    line-height: 1.6;
}