/* Dark Theme Variables and Common Styles for Devs T I LTDA Website */

:root {
    /* Dark Theme Colors */
    --bg-primary: #1a1a1a;
    --bg-secondary: #2a2a2a;
    --bg-tertiary: #3a3a3a;
    --bg-card: #2d2d2d;
    --bg-gradient-primary: linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 100%);
    --bg-gradient-secondary: linear-gradient(135deg, #3a3a3a 0%, #2a2a2a 100%);
    --bg-gradient-accent: linear-gradient(135deg, #4f46e5 0%, #7c3aed 100%);
    
    /* Text Colors */
    --text-primary: #ffffff;
    --text-secondary: #e2e8f0;
    --text-muted: #94a3b8;
    --text-accent: #4f46e5;
    
    /* Link Colors */
    --link-primary: #60a5fa;
    --link-hover: #93c5fd;
    
    /* Border Colors */
    --border-primary: #3a3a3a;
    --border-secondary: #4a4a4a;
    --border-accent: #4f46e5;
    
    /* Shadow */
    --shadow-primary: 0 10px 30px rgba(0, 0, 0, 0.3);
    --shadow-secondary: 0 20px 50px rgba(0, 0, 0, 0.2);
    --shadow-accent: 0 10px 30px rgba(79, 70, 229, 0.3);
    
    /* Accent Colors */
    --accent-primary: #4f46e5;
    --accent-secondary: #7c3aed;
    --accent-success: #10b981;
    --accent-warning: #f59e0b;
    --accent-danger: #ef4444;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 20px;
    --radius-2xl: 30px;
    
    /* Typography */
    --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    --font-size-xs: 0.75rem;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.25rem;
    --font-size-2xl: 1.5rem;
    --font-size-3xl: 1.875rem;
    --font-size-4xl: 2.25rem;
    --font-size-5xl: 3rem;
}

/* Global Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-family);
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-primary);
    overflow-x: hidden;
    min-height: 100vh;
}

/* Common Header Styles */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    background: linear-gradient(135deg, rgba(26, 26, 26, 0.95) 0%, rgba(42, 42, 42, 0.95) 50%, rgba(26, 26, 26, 0.95) 100%);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    z-index: 1000;
    padding: 1rem 0;
    transition: all var(--transition-normal);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.header.scrolled {
    background: linear-gradient(135deg, rgba(26, 26, 26, 0.98) 0%, rgba(42, 42, 42, 0.98) 50%, rgba(26, 26, 26, 0.98) 100%);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
    padding: 0.75rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0 2rem;
}

.logo {
    font-size: 1.75rem;
    font-weight: 800;
    background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 50%, #1d4ed8 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
    letter-spacing: -0.02em;
    position: relative;
    transition: all 0.3s ease;
}

.logo::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, #60a5fa 0%, #3b82f6 50%, #1d4ed8 100%);
    border-radius: 8px;
    z-index: -1;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.logo:hover::before {
    opacity: 0.1;
}

.nav-menu {
    display: flex;
    gap: 2rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu a {
    color: #e2e8f0;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.95rem;
    letter-spacing: 0.02em;
    position: relative;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.nav-menu a:hover {
    color: #60a5fa;
    background: rgba(96, 165, 250, 0.1);
    transform: translateY(-1px);
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: linear-gradient(90deg, #60a5fa 0%, #3b82f6 100%);
    border-radius: 1px;
    transition: all 0.3s ease;
    transform: translateX(-50%);
}

.nav-menu a:hover::after {
    width: 80%;
}

.mobile-menu-btn {
    display: none;
    flex-direction: column;
    cursor: pointer;
    padding: 0.75rem;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.05);
    transition: all 0.3s ease;
}

.mobile-menu-btn:hover {
    background: rgba(96, 165, 250, 0.1);
}

.mobile-menu-btn span {
    width: 24px;
    height: 3px;
    background: #e2e8f0;
    margin: 3px 0;
    border-radius: 2px;
    transition: all 0.3s ease;
}

.mobile-menu-btn:hover span {
    background: #60a5fa;
}

/* Common Container Styles */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Common Page Header */
.page-header {
    text-align: center;
    background: var(--bg-gradient-accent);
    color: var(--text-primary);
    padding: var(--spacing-2xl) var(--spacing-lg);
    border-radius: var(--radius-xl);
    margin-bottom: var(--spacing-xl);
    box-shadow: var(--shadow-accent);
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="25" cy="25" r="1" fill="white" opacity="0.1"/><circle cx="75" cy="75" r="1" fill="white" opacity="0.1"/><circle cx="50" cy="10" r="0.5" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.1;
}

.page-header h1 {
    font-size: var(--font-size-5xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    position: relative;
    z-index: 1;
}

.page-header p {
    font-size: var(--font-size-lg);
    opacity: 0.9;
    position: relative;
    z-index: 1;
}

.last-updated {
    background: rgba(255, 255, 255, 0.2);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-xl);
    display: inline-block;
    margin-top: var(--spacing-md);
    font-size: var(--font-size-sm);
    position: relative;
    z-index: 1;
}

/* Common Content Wrapper */
.content-wrapper {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    box-shadow: var(--shadow-primary);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--border-primary);
}

/* Common Sections */
.section {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-primary);
}

.section:last-child {
    border-bottom: none;
}

.section h2 {
    color: var(--text-primary);
    font-size: var(--font-size-3xl);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    padding-top: var(--spacing-md);
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.section h2 i {
    color: var(--accent-primary);
    font-size: var(--font-size-xl);
}

.section h3 {
    color: var(--accent-primary);
    font-size: var(--font-size-xl);
    font-weight: 600;
    margin: var(--spacing-md) 0 var(--spacing-sm) 0;
}

.section p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
    line-height: 1.7;
}

.section ul {
    margin-bottom: var(--spacing-md);
    padding-left: var(--spacing-lg);
}

.section li {
    margin-bottom: var(--spacing-xs);
    color: var(--text-secondary);
}

/* Links styles - fix for better readability */
a {
    color: var(--link-primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--link-hover);
    text-decoration: underline;
}

.section a {
    color: var(--link-primary);
    font-weight: 500;
}

.section a:hover {
    color: var(--link-hover);
}

/* Common Highlight Boxes */
.highlight-box {
    background: var(--bg-tertiary);
    border-left: 4px solid var(--accent-primary);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
    border: 1px solid var(--border-secondary);
}

.highlight-box h4 {
    color: var(--accent-primary);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.warning-box {
    background: var(--bg-tertiary);
    border-left: 4px solid var(--accent-danger);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    margin: var(--spacing-md) 0;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.warning-box h4 {
    color: var(--accent-danger);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

/* Common Contact Section */
.contact-section {
    background: var(--bg-gradient-accent);
    color: var(--text-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    text-align: center;
    margin-top: var(--spacing-lg);
    box-shadow: var(--shadow-accent);
}

.contact-section h3 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.contact-section p {
    margin-bottom: var(--spacing-md);
    opacity: 0.9;
    color: var(--text-primary);
}

.contact-section a {
    color: rgba(255, 255, 255, 0.9);
    font-weight: 600;
}

.contact-section a:hover {
    color: #ffffff;
}

.contact-button {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    color: var(--text-primary);
    padding: var(--spacing-sm) var(--spacing-lg);
    text-decoration: none;
    border-radius: var(--radius-2xl);
    font-weight: 600;
    transition: all var(--transition-normal);
    margin: var(--spacing-xs);
    border: 1px solid rgba(255, 255, 255, 0.3);
}

.contact-button:hover {
    background: rgba(255, 255, 255, 0.3);
    transform: translateY(-2px);
    box-shadow: var(--shadow-primary);
    color: var(--text-primary);
}

/* Common Button Styles */
.btn {
    display: inline-block;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    text-decoration: none;
    font-weight: 600;
    transition: all var(--transition-normal);
    cursor: pointer;
    border: none;
    font-family: inherit;
}

.btn-primary {
    background: var(--bg-gradient-accent);
    color: var(--text-primary);
    box-shadow: var(--shadow-accent);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(79, 70, 229, 0.4);
}

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

.btn-secondary:hover {
    background: var(--bg-tertiary);
    transform: translateY(-2px);
}

/* Back to top button */
.back-to-top {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    background: var(--bg-gradient-accent);
    color: var(--text-primary);
    width: 50px;
    height: 50px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    text-decoration: none;
    font-size: var(--font-size-lg);
    opacity: 0;
    transition: all var(--transition-normal);
    z-index: 1000;
    box-shadow: var(--shadow-accent);
}

.back-to-top.show {
    opacity: 1;
}

.back-to-top:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(79, 70, 229, 0.4);
}

/* Navigation Menu */
.policy-nav {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    border: 1px solid var(--border-secondary);
}

.policy-nav h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    font-size: var(--font-size-xl);
}

.policy-nav ul {
    list-style: none;
    padding: 0;
}

.policy-nav li {
    margin-bottom: var(--spacing-xs);
}

.policy-nav a {
    color: #60a5fa;
    text-decoration: none;
    font-weight: 500;
    transition: color var(--transition-normal);
}

.policy-nav a:hover {
    color: #93c5fd;
}

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

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

.form-group input,
.form-group textarea,
.form-group select {
    width: 100%;
    padding: var(--spacing-sm);
    border: 2px solid var(--border-secondary);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-base);
    background: var(--bg-tertiary);
    color: var(--text-primary);
    transition: border-color var(--transition-normal);
    font-family: var(--font-family);
}

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

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-muted);
}

/* Responsive Design */
@media (max-width: 768px) {
    :root {
        --spacing-lg: 1rem;
        --spacing-xl: 2rem;
        --spacing-2xl: 3rem;
    }
    
    .nav-menu {
        display: none;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .nav-menu.active {
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        background: linear-gradient(135deg, rgba(26, 26, 26, 0.98) 0%, rgba(42, 42, 42, 0.98) 100%);
        flex-direction: column;
        padding: 1.5rem 1rem;
        box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
        border-top: 1px solid rgba(255, 255, 255, 0.1);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
    }
    
    .page-header h1 {
        font-size: var(--font-size-3xl);
    }
    
    .content-wrapper {
        padding: var(--spacing-lg);
    }
    
    .policy-nav {
        padding: var(--spacing-md);
    }
    
    .container {
        padding: 0 var(--spacing-sm);
    }

    .nav-container {
        padding: 0 1rem;
    }

    .logo {
        font-size: 1.5rem;
    }

    .nav-menu {
        gap: 1rem;
    }

    .nav-menu a {
        font-size: 0.9rem;
        padding: 0.4rem 0.8rem;
    }

    .nav-menu.active a {
        margin-bottom: 0.5rem;
        text-align: center;
        border-radius: 12px;
    }

    .nav-menu.active a:hover {
        background: rgba(96, 165, 250, 0.15);
        transform: translateY(0);
    }
}

/* Animations */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

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

.animate-fade-up {
    animation: fadeInUp 1s ease forwards;
}

.animate-fade-up-delayed {
    animation: fadeInUp 1s ease 0.2s both;
}

/* Smooth scroll */
html {
    scroll-behavior: smooth;
}

/* Custom scrollbar for webkit browsers */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
}

::-webkit-scrollbar-thumb {
    background: var(--accent-primary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--accent-secondary);
}

/* Selection styling */
::selection {
    background: rgba(79, 70, 229, 0.3);
    color: var(--text-primary);
}

::-moz-selection {
    background: rgba(79, 70, 229, 0.3);
    color: var(--text-primary);
}