/* =========================================================================
   Design System - Toque Hoje (Mobile First)
   ========================================================================= */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Poppins:wght@400;600;700;800&display=swap');

:root {
    /* Colors */
    --color-primary-green: #ffbf00; /* Mustard Yellow from Youtube Banner */
    --color-primary-green-dark: #cc9900;
    --color-secondary-purple: #1a1a1a; /* Dark Gray/Black */
    --color-accent-blue: #ffbf00; /* Accent Yellow */
    --color-accent-gold: #ffbf00;
    
    /* Neutrals */
    --color-text-main: #212121;
    --color-text-muted: #757575;
    --color-bg-light: #F8F9FA;
    --color-bg-white: #FFFFFF;
    --color-bg-dark: #121212;
    
    /* Typography */
    --font-heading: 'Poppins', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;   /* 8px */
    --spacing-sm: 1rem;     /* 16px */
    --spacing-md: 1.5rem;   /* 24px - Adjusted for Mobile */
    --spacing-lg: 2.5rem;   /* 40px - Adjusted for Mobile */
    --spacing-xl: 4rem;     /* 64px - Adjusted for Mobile */
    
    /* Radii */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.1);
    --shadow-lg: 0 12px 24px rgba(0,0,0,0.15);
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px; 
}

body {
    font-family: var(--font-body);
    color: var(--color-text-main);
    background-color: var(--color-bg-light);
    line-height: 1.6;
    overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    color: var(--color-text-main);
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    font-weight: 700;
}

h1 { font-size: 2rem; } /* Mobile default */
h2 { font-size: 1.75rem; }
h3 { font-size: 1.5rem; }

a {
    text-decoration: none;
    color: var(--color-accent-blue);
    transition: color var(--transition-fast);
}

a:hover { color: var(--color-primary-green-dark); }

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

/* =========================================================================
   Utility Classes
   ========================================================================= */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-sm);
}

.text-center { text-align: center; }
.text-primary { color: var(--color-secondary-purple); }
.text-purple { color: var(--color-secondary-purple); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--radius-full);
    font-family: var(--font-heading);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-size: 1rem;
    width: 100%; /* Mobile full width by default */
}

@media (min-width: 768px) {
    .btn { width: auto; }
}

.btn-primary {
    background-color: var(--color-primary-green);
    color: var(--color-text-main);
    box-shadow: var(--shadow-md);
}

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

.btn-purple {
    background-color: var(--color-secondary-purple);
    color: var(--color-bg-white);
}

.btn-outline {
    background-color: transparent;
    color: var(--color-text-main);
    border: 2px solid var(--color-primary-green);
}

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

/* Sections */
.section {
    padding: var(--spacing-lg) 0;
}

.bg-white { background-color: var(--color-bg-white); }
.bg-dark { background-color: var(--color-bg-dark); color: var(--color-bg-white); }
.bg-dark h1, .bg-dark h2, .bg-dark h3 { color: var(--color-bg-white); }
.bg-light { background-color: var(--color-bg-light); }

/* =========================================================================
   Layout Components
   ========================================================================= */
/* Header */
.site-header {
    background-color: var(--color-bg-white);
    box-shadow: var(--shadow-sm);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
}

.header-nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 8px;
    z-index: 1001;
}

.logo img {
    height: 40px;
}

/* Base Mobile Nav: Hidden by default */
.nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 100%;
    height: 100vh;
    background-color: var(--color-bg-white);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: right var(--transition-normal);
    z-index: 1000;
    display: flex;
    gap: var(--spacing-sm);
}

.nav-links.active {
    right: 0;
}

.nav-links a {
    font-size: 1.5rem;
    color: var(--color-text-main);
    font-weight: 500;
}

/* Mobile Menu Button */
.menu-toggle {
    background: none;
    border: none;
    cursor: pointer;
    padding: 8px;
    z-index: 1001;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text-main);
    position: relative;
    transition: background-color var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--color-text-main);
    left: 0;
    transition: transform var(--transition-normal);
}

.hamburger::before { top: -6px; }
.hamburger::after { bottom: -6px; }

.menu-open .hamburger { background-color: transparent; }
.menu-open .hamburger::before { transform: rotate(45deg); top: 0; }
.menu-open .hamburger::after { transform: rotate(-45deg); bottom: 0; }

/* Desktop overrides for Header/Nav */
@media (min-width: 768px) {
    .header-nav { height: 80px; }
    .logo img { height: 50px; }
    
    .menu-toggle { display: none; }
    
    .nav-links {
        position: static;
        width: auto;
        height: auto;
        background: none;
        flex-direction: row;
        gap: var(--spacing-md);
        transition: none;
    }
    
    .nav-links a {
        font-size: 1rem;
        position: relative;
    }
    
    .nav-links a::after {
        content: '';
        position: absolute;
        bottom: -4px;
        left: 0;
        width: 0%;
        height: 2px;
        background-color: var(--color-primary-green);
        transition: width var(--transition-normal);
    }
    
    .nav-links a:hover::after {
        width: 100%;
    }
    
    .nav-links a.btn { color: var(--color-bg-white); width: auto; }
    .nav-links a.btn::after { display: none; }
}

/* Footer */
.site-footer {
    background-color: var(--color-bg-dark);
    color: var(--color-bg-white);
    padding: var(--spacing-lg) 0 var(--spacing-sm);
}

.footer-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
}

@media (min-width: 768px) {
    .footer-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

.footer-col h4 {
    color: var(--color-bg-white);
    margin-bottom: var(--spacing-sm);
}

.footer-col p {
    color: var(--color-text-muted);
}

.footer-links a {
    display: block;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-xs);
}

.footer-links a:hover {
    color: var(--color-primary-green);
}

.footer-bottom {
    text-align: center;
    padding-top: var(--spacing-md);
    border-top: 1px solid rgba(255,255,255,0.1);
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* =========================================================================
   Expansion Breakpoints
   ========================================================================= */
@media (min-width: 768px) {
    :root {
        --spacing-md: 2rem;
        --spacing-lg: 4rem;
        --spacing-xl: 8rem;
    }
    
    h1 { font-size: 3rem; }
    h2 { font-size: 2.25rem; }
    
    .section { padding: var(--spacing-xl) 0; }
    .container { padding: 0 var(--spacing-md); }
}