:root {
    --primary: #4F46E5;
    --primary-dark: #4338CA;
    --primary-light: #6366F1;
    --secondary: #10B981;
    --danger: #EF4444;
    --warning: #F59E0B;
    --success: #10B981;
    --info: #3B82F6;
    
    --bg-primary: #FFFFFF;
    --bg-secondary: #F9FAFB;
    --bg-tertiary: #F3F4F6;
    --text-primary: #111827;
    --text-secondary: #6B7280;
    --text-light: #9CA3AF;
    --border: #E5E7EB;
    --shadow: rgba(0, 0, 0, 0.1);
    
    --gradient-1: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-2: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-3: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --gradient-4: linear-gradient(135deg, #43e97b 0%, #38f9d7 100%);
    
    --sidebar-width: 260px;
    --header-height: 70px;
}

[data-theme="dark"] {
    --bg-primary: #1F2937;
    --bg-secondary: #111827;
    --bg-tertiary: #374151;
    --text-primary: #F9FAFB;
    --text-secondary: #D1D5DB;
    --text-light: #9CA3AF;
    --border: #374151;
    --shadow: rgba(0, 0, 0, 0.3);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-secondary);
    color: var(--text-primary);
    line-height: 1.6;
    transition: background 0.3s ease, color 0.3s ease;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    z-index: 1000;
    box-shadow: 0 2px 10px var(--shadow);
}

.header-content {
    max-width: 100%;
    height: 100%;
    padding: 0 20px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 20px;
    font-weight: 700;
    color: var(--primary);
}

.logo i {
    font-size: 24px;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-name {
    font-weight: 500;
    color: var(--text-primary);
}

.profile-btn {
    background: none;
    border: none;
    font-size: 28px;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.3s;
}

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

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.btn-primary:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(79, 70, 229, 0.3);
}

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

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

/* Sidebar */
.main-container {
    display: flex;
    margin-top: var(--header-height);
    min-height: calc(100vh - var(--header-height));
}

.sidebar {
    width: var(--sidebar-width);
    background: var(--bg-primary);
    border-right: 1px solid var(--border);
    position: fixed;
    left: 0;
    top: var(--header-height);
    height: calc(100vh - var(--header-height));
    overflow-y: auto;
    transition: transform 0.3s ease;
    z-index: 999;
}

.sidebar-nav ul {
    list-style: none;
    padding: 20px 0;
}

.sidebar-nav li {
    margin: 4px 0;
}

.sidebar-nav a {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px 20px;
    color: var(--text-secondary);
    text-decoration: none;
    transition: all 0.3s;
    border-left: 3px solid transparent;
    position: relative;
}

.sidebar-nav a:hover {
    background: var(--bg-tertiary);
    color: var(--primary);
    border-left-color: var(--primary);
}

.sidebar-nav .link.active a {
    background: linear-gradient(90deg, rgba(79, 70, 229, 0.1) 0%, transparent 100%);
    color: var(--primary);
    border-left-color: var(--primary);
    font-weight: 600;
}

.sidebar-nav .logout a {
    color: var(--danger);
    margin-top: 20px;
    border-top: 1px solid var(--border);
    padding-top: 20px;
}

.sidebar-nav .badge {
    margin-left: auto;
    padding: 2px 6px;
    font-size: 10px;
    border-radius: 10px;
    min-width: 18px;
    text-align: center;
}

.sidebar-nav .logout a:hover {
    background: rgba(239, 68, 68, 0.1);
    border-left-color: var(--danger);
}

/* Submenu Styles */
.sidebar-nav .menu-item {
    position: relative;
}

.sidebar-nav .menu-item.has-submenu > .submenu-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    cursor: pointer;
    position: relative;
}

.sidebar-nav .menu-item.has-submenu > .submenu-toggle:hover {
    background: var(--bg-tertiary);
    color: var(--primary);
    border-left-color: var(--primary);
}

.sidebar-nav .submenu-arrow {
    font-size: 10px;
    transition: transform 0.3s ease;
    margin-left: auto;
    opacity: 0.7;
}

.sidebar-nav .menu-item.active .submenu-arrow {
    transform: rotate(180deg);
}

.sidebar-nav .submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease, padding 0.3s ease;
    background: transparent;
    margin: 0;
    padding: 0;
    border-left: none;
}

.sidebar-nav .menu-item.active .submenu {
    max-height: 500px;
    padding-top: 4px;
    padding-bottom: 4px;
}

.sidebar-nav .submenu li {
    margin: 2px 0;
}

.sidebar-nav .submenu a {
    padding: 10px 20px 10px 50px;
    font-size: 13px;
    background: transparent;
    border-left: 2px solid transparent;
}

.sidebar-nav .submenu a:hover {
    background: var(--bg-tertiary);
    border-left-color: var(--primary);
    padding-left: 48px;
}

.sidebar-nav .submenu .link.active a {
    background: rgba(79, 70, 229, 0.1);
    border-left-color: var(--primary);
    color: var(--primary);
    font-weight: 500;
}

.sidebar-nav .submenu a i {
    font-size: 13px;
    width: 18px;
    opacity: 0.8;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: 30px;
    min-height: calc(100vh - var(--header-height));
}

/* Mobile Menu */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.hamburger-line {
    width: 25px;
    height: 3px;
    background: var(--text-primary);
    border-radius: 2px;
    transition: all 0.3s;
}

.mobile-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 998;
    opacity: 0;
    transition: opacity 0.3s;
}

.mobile-overlay.active {
    display: block;
    opacity: 1;
}

/* Cards */
.card {
    background: var(--bg-primary);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 2px 8px var(--shadow);
    margin-bottom: 20px;
    transition: transform 0.3s, box-shadow 0.3s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 16px var(--shadow);
}

.card-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.card-title {
    font-size: 20px;
    font-weight: 600;
    color: var(--text-primary);
}

/* Forms */
.form-group {
    margin-bottom: 20px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--bg-primary);
    color: var(--text-primary);
    font-size: 14px;
    transition: all 0.3s;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* Notifications */
.notification {
    position: fixed;
    top: 90px;
    right: 20px;
    background: var(--bg-primary);
    padding: 16px 20px;
    border-radius: 8px;
    box-shadow: 0 4px 16px var(--shadow);
    display: flex;
    align-items: center;
    gap: 12px;
    min-width: 300px;
    transform: translateX(400px);
    opacity: 0;
    transition: all 0.3s;
    z-index: 10000;
}

.notification.show {
    transform: translateX(0);
    opacity: 1;
}

.notification-success {
    border-left: 4px solid var(--success);
}

.notification-error {
    border-left: 4px solid var(--danger);
}

.notification-info {
    border-left: 4px solid var(--info);
}

.notification button {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    margin-left: auto;
}

/* Loading */
.loading-spinner {
    text-align: center;
    padding: 60px 20px;
    color: var(--text-secondary);
}

.loading-spinner i {
    font-size: 32px;
    margin-bottom: 16px;
}

.error-message {
    text-align: center;
    padding: 60px 20px;
    color: var(--danger);
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
    }
    
    .sidebar.mobile-open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        padding: 20px;
    }
    
    .mobile-menu-toggle {
        display: flex;
    }
    
    .mobile-menu-toggle.active .hamburger-line:nth-child(1) {
        transform: rotate(45deg) translate(8px, 8px);
    }
    
    .mobile-menu-toggle.active .hamburger-line:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-menu-toggle.active .hamburger-line:nth-child(3) {
        transform: rotate(-45deg) translate(7px, -7px);
    }
    
    /* Ocultar nome do sistema e usuário no mobile */
    .logo span {
        display: none;
    }
    
    .user-name {
        display: none;
    }
    
    .header-content {
        padding: 0 15px;
    }
    
    .logo {
        font-size: 18px;
    }
    
    .logo i {
        font-size: 20px;
    }
}

/* Grid */
.grid {
    display: grid;
    gap: 20px;
}

.grid-2 {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

.grid-4 {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}