/* =========================================
   GLOBAL VARIABLES, RESETS & TYPOGRAPHY
========================================= */

:root {
    /* Fonts */
    --font-heading: 'Oswald', sans-serif;
    --font-body: 'Roboto', sans-serif;

    /* Color Palette */
    --color-primary: #2E7D32;    /* Deep Green for sustainability */
    --color-accent: #FFC107;     /* Industrial Yellow for CTAs */
    --color-secondary: #0D47A1;  /* Corporate Blue for trust */
    --color-background-main: #FFFFFF;
    --color-background-alt: #F4F6F9; /* Light grey for section contrast */
    --color-text-primary: #212529;   /* Near-black for readability */
    --color-text-secondary: #6c757d; /* Grey for less important text */
    --color-text-on-dark: #FFFFFF;
    --color-footer-bg: #212529;
    --color-border-subtle: #dee2e6;
}

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

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

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

/* --- REUSABLE COMPONENTS --- */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

section {
    padding: 6rem 0;
}

.section-title {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title h2 {
    font-family: var(--font-heading);
    font-size: 2.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--color-text-primary);
    margin-bottom: 1rem;
}

.section-title p {
    font-size: 1.1rem;
    max-width: 700px;
    margin: 0 auto;
    color: var(--color-text-secondary);
}

/* --- BUTTONS --- */
.btn {
    text-decoration: none;
    padding: 0.8rem 2rem;
    margin: 0 0.5rem;
    border-radius: 5px;
    font-size: 1rem;
    font-weight: 700;
    text-transform: uppercase;
    display: inline-block;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
}

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

.btn-primary:hover {
    background: #ffca2c;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text-on-dark);
    border: 2px solid var(--color-text-on-dark);
}

.btn-secondary:hover {
    background: var(--color-text-on-dark);
    color: var(--color-text-primary);
    transform: translateY(-3px);
}

/* --- GLOBAL ANIMATIONS --- */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

/* --- GLOBAL RESPONSIVE --- */
@media (max-width: 992px) {
    .section-title h2 {
        font-size: 2.4rem;
    }
}