:root {
    /* Colores principales */
    --primary-violet: #5B3FFF;
    --secondary-turquoise: #00C4B4;
    --bg-dark: #0F1218;
    --bg-card: #1a1d26;
    --bg-hover: #252932;
    --success: #00C4B4;
    --warning: #FFA726;
    --error: #FF5252;
    --text-primary: #FFFFFF;
    --text-secondary: #A0A0A0;
    --text-muted: #6B7280;
    
    /* Espaciado */
    --border-radius: 16px;
    --border-radius-sm: 8px;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    
    /* Topbar */
    --topbar-height: 70px;
    
    /* Transiciones */
    --transition-fast: 150ms ease-in-out;
    --transition-normal: 300ms ease-in-out;
    --transition-slow: 500ms ease-in-out;
}

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, var(--bg-dark) 0%, #1a1d26 100%);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    line-height: 1.6;
}

/* Topbar Navigation */
.topbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--topbar-height);
    background: rgba(15, 18, 24, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    z-index: 1000;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.topbar-container {
    max-width: 1400px;
    margin: 0 auto;
    height: 100%;
    padding: 0 var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-xl);
}

.topbar-logo {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(90deg, var(--primary-violet) 0%, var(--secondary-turquoise) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    cursor: pointer;
    transition: transform var(--transition-fast);
    white-space: nowrap;
}

.topbar-logo:hover {
    transform: scale(1.05);
}

.topbar-nav {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.nav-link {
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    border-radius: var(--border-radius-sm);
    transition: all var(--transition-fast);
    cursor: pointer;
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.nav-link:hover {
    color: var(--text-primary);
    background: rgba(91, 63, 255, 0.1);
}

.nav-link.active {
    color: var(--secondary-turquoise);
    background: rgba(0, 196, 180, 0.1);
}

.topbar-search {
    flex: 1;
    max-width: 500px;
    position: relative;
}

.search-input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-lg);
    padding-left: 3rem;
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    color: var(--text-primary);
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.search-input:focus {
    outline: none;
    border-color: var(--primary-violet);
    box-shadow: 0 0 0 3px rgba(91, 63, 255, 0.1);
}

.search-icon {
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
}

.topbar-actions {
    display: flex;
    gap: var(--spacing-md);
    align-items: center;
}

.wallet-btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    background: linear-gradient(90deg, var(--primary-violet) 0%, var(--secondary-turquoise) 100%);
    border: none;
    border-radius: var(--border-radius);
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    box-shadow: 0 4px 15px rgba(91, 63, 255, 0.3);
    white-space: nowrap;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.wallet-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(91, 63, 255, 0.5);
}

.wallet-btn.connected {
    background: var(--bg-card);
    border: 1px solid var(--success);
}

/* Main Container */
.main-container {
    margin-top: var(--topbar-height);
    min-height: calc(100vh - var(--topbar-height));
    padding: var(--spacing-xl);
}

.container {
    max-width: 1400px;
    margin: 0 auto;
}

/* Pages */
.page {
    display: none;
    animation: fadeIn var(--transition-normal);
}

.page.active {
    display: block;
}

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

/* Buttons */
.btn {
    padding: var(--spacing-sm) var(--spacing-lg);
    border: none;
    border-radius: var(--border-radius);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(90deg, var(--primary-violet) 0%, var(--secondary-turquoise) 100%);
    color: white;
    box-shadow: 0 4px 15px rgba(91, 63, 255, 0.3);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(91, 63, 255, 0.5);
}

.btn-secondary {
    background: var(--bg-card);
    color: var(--text-primary);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

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

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

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

/* Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all var(--transition-fast);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 15px 40px rgba(91, 63, 255, 0.2);
}

/* Grid */
.grid {
    display: grid;
    gap: var(--spacing-lg);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

@media (max-width: 1200px) {
    .grid-4 { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 768px) {
    .grid-3, .grid-4 { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 480px) {
    .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
}

/* Forms */
.form-group {
    margin-bottom: var(--spacing-lg);
}

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

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-card);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--primary-violet);
    box-shadow: 0 0 0 3px rgba(91, 63, 255, 0.1);
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    padding: var(--spacing-lg);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-card);
    border-radius: var(--border-radius);
    padding: var(--spacing-xl);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid rgba(255, 255, 255, 0.1);
    animation: modalSlide var(--transition-normal);
}

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

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-lg);
}

.modal-close {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color var(--transition-fast);
}

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

/* Toast Notifications */
.toast-container {
    position: fixed;
    top: calc(var(--topbar-height) + var(--spacing-md));
    right: var(--spacing-md);
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.toast {
    background: var(--bg-card);
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--border-radius);
    border-left: 4px solid;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.3);
    animation: slideIn var(--transition-normal);
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    min-width: 300px;
}

.toast.success { border-color: var(--success); }
.toast.error { border-color: var(--error); }
.toast.warning { border-color: var(--warning); }

@keyframes slideIn {
    from {
        transform: translateX(400px);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* Loading */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.1);
    border-top-color: var(--primary-violet);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Utilities */
.text-gradient {
    background: linear-gradient(90deg, var(--primary-violet) 0%, var(--secondary-turquoise) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.text-center { text-align: center; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

.hidden { display: none !important; }

/* Responsive */
@media (max-width: 1024px) {
    .topbar-nav {
        display: none;
    }
    
    .topbar-search {
        max-width: 300px;
    }
}

@media (max-width: 768px) {
    .topbar-container {
        padding: 0 var(--spacing-md);
    }
    
    .topbar-search {
        display: none;
    }
    
    .main-container {
        padding: var(--spacing-md);
    }
}