:root {
    --primary-color: #2196F3;
    --success-color: #4CAF50;
    --warning-color: #FFC107;
    --danger-color: #F44336;
    --purple-color: #9C27B0;
    --background-color: #0a0e27;
    --surface-color: #1a1f3a;
    --card-color: #252a4a;
    --text-primary: #ffffff;
    --text-secondary: #b0b3c1;
    --border-color: #2d3348;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--purple-color));
    --gradient-success: linear-gradient(135deg, var(--success-color), #66BB6A);
    --gradient-danger: linear-gradient(135deg, var(--danger-color), #EF5350);
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: var(--background-color);
    color: var(--text-primary);
    line-height: 1.6;
    padding-bottom: 80px;
    min-height: 100vh;
}

.header {
    background: var(--gradient-primary);
    padding: 1rem 0;
    box-shadow: var(--shadow);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header h1 {
    font-size: 1.5rem;
    font-weight: 700;
}

.language-toggle .lang-btn {
    background: rgba(255, 255, 255, 0.2);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.language-toggle .lang-btn:hover {
    background: rgba(255, 255, 255, 0.3);
}

.main-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

.section {
    display: none;
    animation: fadeIn 0.3s ease;
}

.section.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.card {
    background: var(--card-color);
    border-radius: 16px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

.card h2, .card h3 {
    color: var(--text-primary);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.card h2 i, .card h3 i {
    color: var(--primary-color);
}

.market-data {
    display: grid;
    gap: 1rem;
}

.crypto-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--surface-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.crypto-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.crypto-symbol {
    font-weight: bold;
    color: var(--primary-color);
}

.crypto-name {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.crypto-price {
    text-align: right;
}

.price {
    font-weight: bold;
    font-size: 1.1rem;
}

.change {
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

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

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

.change-neutral {
    color: var(--text-secondary);
}

.loading {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 2rem;
    color: var(--text-secondary);
}

.quick-alert-form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.alert-inputs {
    display: flex;
    gap: 0.5rem;
}

.form-input, .form-select {
    background: var(--surface-color);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s ease, box-shadow 0.3s ease;
    flex: 1;
}

.form-input:focus, .form-select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(33, 150, 243, 0.1);
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
    justify-content: center;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(33, 150, 243, 0.4);
}

.btn-secondary {
    background: var(--surface-color);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-secondary:hover {
    background: var(--border-color);
}

.btn-danger {
    background: var(--gradient-danger);
    color: white;
}

.btn-danger:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(244, 67, 54, 0.4);
}

.portfolio-data {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.portfolio-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: var(--surface-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.sentiment-data {
    text-align: center;
}

.sentiment-indicator {
    margin-bottom: 1rem;
}

.sentiment-gauge {
    width: 150px;
    height: 75px;
    background: linear-gradient(to right, var(--danger-color), var(--warning-color), var(--success-color));
    border-radius: 75px 75px 0 0;
    margin: 0 auto;
    position: relative;
    overflow: hidden;
}

.needle {
    width: 2px;
    height: 60px;
    background: white;
    position: absolute;
    bottom: 0;
    left: 50%;
    transform-origin: bottom center;
    transform: translateX(-50%) rotate(0deg);
    transition: transform 0.5s ease;
}

.sentiment-labels {
    display: flex;
    justify-content: space-between;
    margin-top: 0.5rem;
    font-size: 0.9rem;
}

.sentiment-value {
    font-size: 2rem;
    font-weight: bold;
    color: var(--primary-color);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.section-header h2 {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-primary);
}

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    backdrop-filter: blur(4px);
}

.modal.active {
    display: flex;
    align-items: center;
    justify-content: center;
    animation: modalFadeIn 0.3s ease;
}

@keyframes modalFadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    background: var(--card-color);
    border-radius: 16px;
    padding: 0;
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    animation: modalSlideIn 0.3s ease;
}

@keyframes modalSlideIn {
    from { transform: translateY(-50px); opacity: 0; }
    to { transform: translateY(0); opacity: 1; }
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.5rem;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h3 {
    margin: 0;
    color: var(--text-primary);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    padding: 0.25rem;
    border-radius: 4px;
    transition: color 0.3s ease, background-color 0.3s ease;
}

.modal-close:hover {
    color: var(--text-primary);
    background: var(--surface-color);
}

.alert-form, .holding-form {
    padding: 1.5rem;
}

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

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

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
}

.alerts-container, .portfolio-container {
    margin-top: 2rem;
}

.alerts-list, .portfolio-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.alert-item, .holding-item {
    background: var(--card-color);
    border-radius: 12px;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.alert-item:hover, .holding-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.alert-header, .holding-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

.alert-title, .holding-title {
    font-weight: bold;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.alert-actions, .holding-actions {
    display: flex;
    gap: 0.5rem;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.alert-details, .holding-details {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
}

.detail-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.detail-label {
    color: var(--text-secondary);
    font-size: 0.875rem;
}

.detail-value {
    color: var(--text-primary);
    font-weight: 500;
}

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

.empty-state i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--border-color);
}

.empty-state p {
    margin-bottom: 0.5rem;
}

.settings-container {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.settings-card {
    background: var(--card-color);
}

.setting-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 24px;
}

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

.slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--surface-color);
    transition: 0.3s;
    border-radius: 24px;
    border: 1px solid var(--border-color);
}

.slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 2px;
    bottom: 2px;
    background: white;
    transition: 0.3s;
    border-radius: 50%;
}

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

input:checked + .slider:before {
    transform: translateX(26px);
}

.setting-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
}

.faq-section {
    margin: 3rem 0;
    padding: 2rem;
    background: var(--card-color);
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.faq-section h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: var(--text-primary);
}

.faq-container {
    max-width: 800px;
    margin: 0 auto;
}

.faq-item {
    border-bottom: 1px solid var(--border-color);
}

.faq-item:last-child {
    border-bottom: none;
}

.faq-question {
    width: 100%;
    background: none;
    border: none;
    color: var(--text-primary);
    padding: 1.5rem 0;
    text-align: left;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 1.1rem;
    font-weight: 500;
    transition: color 0.3s ease;
}

.faq-question:hover {
    color: var(--primary-color);
}

.faq-icon {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.faq-question[aria-expanded="true"] .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    padding: 0 0 1.5rem 0;
    color: var(--text-secondary);
    line-height: 1.6;
    animation: fadeInDown 0.3s ease;
}

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

.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: var(--surface-color);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-around;
    padding: 0.5rem 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
}

.nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
    padding: 0.5rem 1rem;
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease, transform 0.3s ease;
    border-radius: 8px;
}

.nav-item:hover {
    color: var(--primary-color);
    transform: translateY(-2px);
}

.nav-item.active {
    color: var(--primary-color);
    background: rgba(33, 150, 243, 0.1);
}

.nav-item i {
    font-size: 1.2rem;
}

.nav-item span {
    font-size: 0.75rem;
    font-weight: 500;
}

footer {
    text-align: center;
    padding: 2rem 1rem;
    color: var(--text-secondary);
    font-size: 0.875rem;
    margin-top: 3rem;
    border-top: 1px solid var(--border-color);
}

@media (max-width: 768px) {
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .alert-inputs {
        flex-direction: column;
    }
    
    .form-actions {
        flex-direction: column;
    }
    
    .setting-actions {
        flex-direction: column;
    }
    
    .alert-details, .holding-details {
        grid-template-columns: 1fr;
    }
    
    .section-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .modal-content {
        width: 95%;
    }
}

@media (max-width: 480px) {
    .header-content {
        padding: 0 0.5rem;
    }
    
    .header h1 {
        font-size: 1.25rem;
    }
    
    .main-content {
        padding: 0.5rem;
    }
    
    .card {
        padding: 1rem;
    }
    
    .nav-item {
        padding: 0.5rem 0.25rem;
    }
    
    .nav-item span {
        font-size: 0.7rem;
    }
}

.status-active {
    color: var(--success-color);
}

.status-triggered {
    color: var(--warning-color);
}

.profit {
    color: var(--success-color);
}

.loss {
    color: var(--danger-color);
}

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