/* Reset e Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Cores do tema */
    --primary: #6366f1;
    --secondary: #8b5cf6;
    --accent: #06b6d4;
    --background: #0f172a;
    --surface: #1e293b;
    --surface-light: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #64748b;
    --border: #334155;
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    
    /* Espaçamentos */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Bordas */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    
    /* Sombras */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, var(--background) 0%, #1a202c 100%);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Loading Screen */
.loading-screen {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--background);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    z-index: 9999;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--surface);
    border-top: 3px solid var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: var(--spacing-lg);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* App Container */
.app-container {
    display: flex;
    min-height: 100vh;
}

/* Desktop Navigation */
.desktop-nav {
    width: 280px;
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(10px);
    border-right: 1px solid var(--border);
    padding: var(--spacing-lg);
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    z-index: 50;
    overflow-y: auto;
}

.nav-header {
    margin-bottom: var(--spacing-2xl);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
}

.nav-logo i {
    color: var(--primary);
}

.nav-menu {
    list-style: none;
}

.nav-menu li {
    margin-bottom: var(--spacing-sm);
}

.nav-link {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-secondary);
    text-decoration: none;
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
    font-weight: 500;
}

.nav-link:hover {
    background: var(--surface-light);
    color: var(--text-primary);
    transform: translateX(4px);
}

.nav-link.active {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: 280px;
    padding: var(--spacing-2xl);
    padding-bottom: 100px;
}

/* Pages */
.page {
    display: none;
    animation: fadeIn 0.5s ease-out;
}

.page.active {
    display: block;
}

.page-header {
    margin-bottom: var(--spacing-2xl);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.page-header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: var(--spacing-sm);
}

.page-header p {
    color: var(--text-secondary);
    font-size: 1.1rem;
}

/* Dashboard Grid */
.dashboard-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.dashboard-card {
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    text-align: center;
    transition: all 0.3s ease;
}

.card-hover:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.card-icon {
    width: 60px;
    height: 60px;
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    color: white;
}

.gradient-bg {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
}

.dashboard-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-sm);
}

.card-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.card-label {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Recent Activity */
.recent-activity {
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
}

.recent-activity h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.activity-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.activity-item {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
    border-radius: var(--radius-lg);
    transition: all 0.3s ease;
}

.activity-item:hover {
    background: var(--surface-light);
}

.activity-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    flex-shrink: 0;
}

.activity-content h4 {
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.activity-content p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-xs);
}

.activity-time {
    color: var(--text-muted);
    font-size: 0.8rem;
}

/* Profile */
.profile-container {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-2xl);
}

.profile-card {
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
    text-align: center;
    height: fit-content;
}

.profile-avatar {
    width: 100px;
    height: 100px;
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-lg);
    color: white;
}

.profile-card h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.profile-role {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
}

.profile-stats {
    display: flex;
    justify-content: space-around;
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border);
}

.stat {
    text-align: center;
}

.stat-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.profile-info {
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-2xl);
}

.profile-info h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.profile-info p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.7;
}

.skills-grid {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.skill-tag {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
}

/* Projects */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.project-card {
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    overflow: hidden;
    transition: all 0.3s ease;
}

.project-image {
    height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

.project-content {
    padding: var(--spacing-xl);
}

.project-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.project-content p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    line-height: 1.6;
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.tag {
    background: var(--surface-light);
    color: var(--text-secondary);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 0.8rem;
}

/* Notes */
.notes-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.note-card {
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    transition: all 0.3s ease;
    cursor: pointer;
    position: relative;
}

.note-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.note-card h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.note-card p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    line-height: 1.5;
    margin-bottom: var(--spacing-md);
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.note-date {
    color: var(--text-muted);
    font-size: 0.8rem;
}

.note-actions {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    display: flex;
    gap: var(--spacing-sm);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.note-card:hover .note-actions {
    opacity: 1;
}

.note-action {
    background: var(--surface-light);
    border: none;
    color: var(--text-secondary);
    width: 32px;
    height: 32px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.note-action:hover {
    background: var(--primary);
    color: white;
}

/* Settings */
.settings-container {
    max-width: 600px;
}

.settings-section {
    background: rgba(30, 41, 59, 0.6);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    margin-bottom: var(--spacing-lg);
}

.settings-section h3 {
    font-size: 1.2rem;
    font-weight: 600;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

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

.setting-item:last-child {
    margin-bottom: 0;
}

.setting-item label {
    font-weight: 500;
    color: var(--text-primary);
}

.setting-description {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-top: var(--spacing-sm);
}

/* Buttons */
.btn-primary, .btn-secondary {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md) var(--spacing-lg);
    border: none;
    border-radius: var(--radius-lg);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    text-decoration: none;
    font-size: 0.9rem;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

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

/* Form Elements */
input[type="text"], textarea, input[type="checkbox"] {
    background: var(--surface);
    border: 1px solid var(--border);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-md);
    font-family: inherit;
    transition: all 0.3s ease;
}

input[type="text"]:focus, textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

input[type="checkbox"] {
    width: 20px;
    height: 20px;
    padding: 0;
    cursor: pointer;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--surface);
    border-radius: var(--radius-xl);
    width: 90%;
    max-width: 500px;
    max-height: 80vh;
    overflow: hidden;
    animation: modalSlideIn 0.3s ease-out;
}

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

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

.modal-header h3 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-primary);
}

.close-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
}

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

.modal-body {
    padding: var(--spacing-lg);
}

.note-input, .note-textarea {
    width: 100%;
    margin-bottom: var(--spacing-md);
}

.note-textarea {
    min-height: 150px;
    resize: vertical;
}

.modal-footer {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    border-top: 1px solid var(--border);
}

/* Mobile Navigation */
.mobile-nav {
    display: none;
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: rgba(30, 41, 59, 0.95);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--border);
    z-index: 50;
}

.mobile-nav-container {
    display: flex;
    justify-content: space-around;
    padding: var(--spacing-md) var(--spacing-sm);
}

.mobile-nav-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    text-decoration: none;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all 0.3s ease;
    font-size: 0.8rem;
    font-weight: 500;
}

.mobile-nav-link.active {
    color: var(--primary);
}

.mobile-nav-link:hover {
    color: var(--text-primary);
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .desktop-nav {
        display: none;
    }
    
    .mobile-nav {
        display: block;
    }
    
    .main-content {
        margin-left: 0;
        padding: var(--spacing-lg);
        padding-bottom: 120px;
    }
    
    .page-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .dashboard-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
        gap: var(--spacing-md);
    }
    
    .profile-container {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .notes-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .modal-content {
        width: 95%;
        margin: var(--spacing-md);
    }
}

@media (max-width: 480px) {
    .main-content {
        padding: var(--spacing-md);
    }
    
    .dashboard-grid {
        grid-template-columns: 1fr;
    }
    
    .dashboard-card {
        padding: var(--spacing-lg);
    }
    
    .page-header h1 {
        font-size: 1.75rem;
    }
}

/* PWA Specific Styles */
@media (display-mode: standalone) {
    body {
        padding-top: env(safe-area-inset-top);
        padding-bottom: env(safe-area-inset-bottom);
    }
    
    .main-content {
        padding-top: calc(var(--spacing-2xl) + env(safe-area-inset-top));
    }
    
    .mobile-nav {
        padding-bottom: env(safe-area-inset-bottom);
    }
}