/* ==========================================================================
   Base Styles & Variables
   ========================================================================== */

:root {
    /* Colors */
    --color-primary: #0a2540;       /* Midnight Blue */
    --color-primary-hover: #06192e;
    --color-bg-light: #f3f4f6;      /* Off-white / Oyster */
    --color-bg-white: #ffffff;
    --color-bg-dark: #0f172a;       /* Dark Navy */
    
    --color-text-main: #0f172a;     /* Dark text for light bg */
    --color-text-muted: #64748b;    /* Muted text */
    --color-text-light: #f8fafc;    /* Light text for dark bg */
    
    --color-success: #10b981;       /* Green for Lighthouse/Checkmarks */
    --color-danger: #ef4444;        /* Red for 'Site Comum' X icons */
    
    --color-border: #e5e7eb;

    /* Typography */
    --font-primary: 'Space Grotesk', sans-serif;
    
    /* Spacing (Fluid) */
    --space-xs: clamp(0.5rem, 1vw, 0.75rem);
    --space-sm: clamp(0.75rem, 1.5vw, 1rem);
    --space-md: clamp(1.25rem, 2.5vw, 2rem);
    --space-lg: clamp(2rem, 4vw, 3.5rem);
    --space-xl: clamp(3rem, 6vw, 5rem);
    
    /* Borders & Shadows */
    --radius-sm: 0.375rem;
    --radius-md: 0.75rem;
    --radius-lg: 1.5rem;
    --radius-full: 9999px;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-glass: 0 8px 32px 0 rgba(31, 38, 135, 0.07);
}

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

html {
    scroll-behavior: smooth;
    font-family: var(--font-primary);
    background-color: var(--color-bg-light);
    color: var(--color-text-main);
    line-height: 1.6;
}

body {
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
    background-image: 
        linear-gradient(to right, rgba(0, 0, 0, 0.03) 1px, transparent 1px),
        linear-gradient(to bottom, rgba(0, 0, 0, 0.03) 1px, transparent 1px);
    background-size: 40px 40px;
}

/* ==========================================================================
   Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
    line-height: 1.2;
    font-weight: 700;
    letter-spacing: -0.02em;
}

h1 {
    font-size: clamp(2.5rem, 6vw, 4.5rem);
    margin-bottom: var(--space-sm);
}

h2 {
    font-size: clamp(2rem, 4vw, 3rem);
    margin-bottom: var(--space-sm);
}

h3 {
    font-size: clamp(1.25rem, 2.5vw, 1.75rem);
}

h4 {
    font-size: 1.125rem;
}

p {
    margin-bottom: var(--space-md);
    color: var(--color-text-muted);
}

a {
    text-decoration: none;
    color: inherit;
    transition: color 0.3s ease;
}

/* ==========================================================================
   Layout
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-md);
}

.section {
    padding: var(--space-xl) 0;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* ==========================================================================
   Utilities
   ========================================================================== */
.text-center { text-align: center; }
.img-fluid { width: 100%; height: auto; object-fit: cover; }
.rounded { border-radius: var(--radius-md); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    border-radius: var(--radius-full);
    transition: all 0.3s ease;
    cursor: pointer;
    border: none;
}

.btn-primary {
    background-color: var(--color-primary);
    color: var(--color-bg-white);
    box-shadow: 0 4px 14px 0 rgba(29, 78, 216, 0.39);
}

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(29, 78, 216, 0.4);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

.btn-block {
    width: 100%;
}

/* Badges */
.badge {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    margin-bottom: var(--space-sm);
}

.badge-light {
    background-color: #e0e7ff;
    color: var(--color-primary);
}

/* Animations */
.fade-in {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.8s ease-out, transform 0.8s ease-out;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}