/* FILE: /assets/css/shared/global.css */
/* PHASE 3: DESIGN SYSTEM - GLOBAL STYLES & COMPONENTS */

@import url('variables.css');

/* ==========================================================================
   RESET & BASE
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px; /* Base 16px for rem scaling */
}

body {
    font-family: var(--font-body);
    background-color: var(--color-bg-white);
    color: var(--color-text-dark);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

img, picture, video, canvas, svg {
    display: block;
    max-width: 100%;
    height: auto;
}

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

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

a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible, textarea:focus-visible {
    outline: 2px solid var(--color-accent-light);
    outline-offset: 4px;
}

/* ==========================================================================
   TYPOGRAPHY
   ========================================================================== */
h1, h2, h3, .heading {
    font-family: var(--font-heading);
    color: var(--color-primary-dark);
    line-height: 1.2;
    margin-bottom: var(--space-4);
    font-weight: 700;
}

h4, h5, h6, .subheading {
    font-family: var(--font-subheading);
    color: var(--color-text-muted);
    font-weight: 700;
    line-height: 1.4;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-2);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
    margin-bottom: var(--space-4);
}

/* ==========================================================================
   UI COMPONENTS
   ========================================================================== */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-ui);
    font-weight: 500;
    font-size: var(--text-base);
    padding: var(--space-3) var(--space-6);
    border-radius: var(--radius-md);
    cursor: pointer;
    border: 2px solid transparent;
    transition: all var(--transition-fast);
    text-align: center;
}

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

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

.btn-outline {
    background-color: transparent;
    border-color: var(--color-accent-green);
    color: var(--color-accent-green);
}

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

/* Cards */
.card {
    background: var(--color-white);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
    border: 1px solid rgba(0,0,0,0.03);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

/* ==========================================================================
   UTILITIES & ANIMATIONS
   ========================================================================== */
.container {
    width: 100%;
    max-width: 1440px;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.text-center { text-align: center; }
.mt-4 { margin-top: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }

/* Scroll Reveal Animations (Used via Intersection Observer in JS later) */
.reveal-up {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.reveal-up.is-visible {
    opacity: 1;
    transform: translateY(0);
}