:root {
    --primary: #1F5D75;
    --primary-hover: #154559;
    --bg-color: #ffffff;
    --text-color: #333333;
    --text-light: #666666;
    --light-bg: #f4f8f9;
    --border-color: #e0e0e0;
    --card-bg: #ffffff;
    --header-bg: #ffffff;
}

:root[data-theme="dark"] {
    --primary: #38b1e4;
    --primary-hover: #1F5D75;
    --bg-color: #121212;
    --text-color: #e0e0e0;
    --text-light: #a0a0a0;
    --light-bg: #1a1a1a;
    --border-color: #333333;
    --card-bg: #242424;
    --header-bg: #181818;
}

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

body {
    font-family: 'Inter', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

.container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
}

header {
    background-color: var(--header-bg);
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    padding: 8px 0;
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo-container {
    display: flex;
    align-items: center;
}

.logo {
    width: auto;
    height: 60px;
    min-width: 60px;
    border: 2px solid var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 10px;
    text-decoration: none;
    border-radius: 8px;
    transition: 0.3s;
}

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

.logo-text {
    color: var(--primary);
    font-weight: bold;
    font-size: 1.2rem;
    transition: 0.3s;
}

.logo:hover .logo-text {
    color: white;
}

nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

nav ul li a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
}

nav ul li a:hover {
    color: var(--primary);
}

.btn-primary {
    background-color: var(--primary);
    color: white;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    font-weight: 500;
    display: inline-block;
    transition: background-color 0.3s, transform 0.2s;
    border: none;
    cursor: pointer;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    color: white;
}

.btn-outline {
    background-color: transparent;
    color: var(--primary);
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    border: 2px solid var(--primary);
    font-weight: 500;
    transition: 0.3s;
}

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

.hero {
    padding: 100px 0;
    background: linear-gradient(rgba(15, 25, 35, 0.8), rgba(10, 20, 30, 0.9)), url('../img/industrial_bg.png') center/cover no-repeat;
    text-align: center;
}

.hero h1 {
    font-size: 3rem;
    color: #ffffff;
    margin-bottom: 20px;
    text-shadow: 0 2px 4px rgba(0,0,0,0.5);
}

.hero p {
    font-size: 1.25rem;
    color: #e0e0e0;
    max-width: 800px;
    margin: 0 auto 30px;
    text-shadow: 0 1px 3px rgba(0,0,0,0.5);
}

.section {
    padding: 60px 0;
}

.section-title {
    text-align: center;
    font-size: 2rem;
    color: var(--primary);
    margin-bottom: 40px;
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background-color: var(--card-bg) !important;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.05);
    border-top: 4px solid var(--primary);
    transition: transform 0.3s;
}

.card:hover {
    transform: translateY(-5px);
}

.card h3 {
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: 15px;
}

.price {
    font-size: 2rem;
    font-weight: bold;
    color: var(--text-color);
    margin: 15px 0;
}

.price span {
    font-size: 1rem;
    color: var(--text-light);
    font-weight: normal;
}

.tax-notice {
    font-size: 0.85rem;
    color: var(--text-light);
    font-style: italic;
    margin-top: 10px;
}

footer {
    background-color: var(--primary);
    color: white;
    padding: 40px 0;
    text-align: center;
}

.contact-info {
    margin-top: 20px;
    font-size: 1.1rem;
}

.contact-info a {
    color: #a8d5e5;
    text-decoration: none;
}

.contact-info a:hover {
    text-decoration: underline;
}

/* Auth Pages */
.auth-container {
    max-width: 400px;
    margin: 60px auto;
    padding: 30px;
    background-color: var(--card-bg) !important;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

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

.form-group label {
    display: block;
    margin-bottom: 5px;
    font-weight: 500;
}

.form-group input, .form-group select, .form-group textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-family: inherit;
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
}

.alert {
    padding: 15px;
    border-radius: 5px;
    margin-bottom: 20px;
}

.alert-error {
    background-color: #fee2e2;
    color: #b91c1c;
    border: 1px solid #f87171;
}

.alert-success {
    background-color: #d1fae5;
    color: #047857;
    border: 1px solid #34d399;
}

/* Dashboard Forms and Tables */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 20px;
}

.table th, .table td {
    border: 1px solid var(--border-color);
    padding: 12px;
    text-align: left;
}

.table th {
    background-color: var(--light-bg);
    color: var(--primary);
}

/* Cookies */
#cookie-banner {
    position: fixed;
    bottom: 20px;
    left: 20%;
    right: 20%;
    background-color: var(--card-bg) !important;
    padding: 20px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.2);
    border-radius: 10px;
    border-left: 5px solid var(--primary);
    z-index: 9999;
    display: none;
    justify-content: space-between;
    align-items: center;
}

/* Sidebar Layout para área privada */
.app-layout {
    display: flex;
    min-height: calc(100vh - 80px);
}
.sidebar {
    width: 250px;
    background-color: var(--primary);
    color: white;
    padding: 30px 20px;
    position: sticky;
    top: 76px; /* Offset for the sticky header */
    height: calc(100vh - 76px);
    overflow-y: auto;
}
.sidebar-nav ul {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.sidebar-nav ul li a {
    color: white;
    text-decoration: none;
    font-size: 1.1rem;
    display: block;
    padding: 10px;
    border-radius: 5px;
    transition: background-color 0.3s;
}
.sidebar-nav ul li a:hover {
    background-color: var(--primary-hover);
}
.main-content {
    flex: 1;
    padding: 30px;
    background-color: var(--light-bg);
}

/* Responsive Design for Mobile */
@media (max-width: 768px) {
    .header-container {
        flex-wrap: wrap;
    }
    
    .menu-toggle {
        display: block !important;
    }
    
    .main-nav {
        display: none;
        width: 100%;
        margin-top: 15px;
        order: 3;
    }
    
    .main-nav.active {
        display: block;
    }
    
    .main-nav ul {
        flex-direction: column;
        align-items: center;
        gap: 15px;
        width: 100%;
    }
    
    .main-actions {
        width: 100%;
        order: 4;
        justify-content: center;
        margin-top: 15px;
        display: flex;
    }
    
    .app-layout {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        padding: 15px;
        position: relative;
        top: 0;
        height: auto;
        overflow-y: visible;
    }
    
    .sidebar-nav ul {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
    }
    
    .main-content {
        padding: 15px;
    }
    
    #cookie-banner {
        left: 5%;
        right: 5%;
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }
}