/*
 * Jazzy's Burger - Base Styles
 * Reset, typography, and global utilities
 */

/* ========================================
   CSS RESET (Modern)
   ======================================== */

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

html {
    scroll-behavior: smooth;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

body {
    font-family: var(--font-body);
    font-size: var(--text-body);
    font-weight: var(--font-weight-regular);
    line-height: var(--leading-normal);
    color: var(--color-text-primary);
    background-color: var(--color-bg-primary);
    min-height: 100vh;
}

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

input,
button,
textarea,
select {
    font: inherit;
    color: inherit;
}

a {
    color: inherit;
    text-decoration: none;
}

ul,
ol {
    list-style: none;
}

button {
    background: none;
    border: none;
    cursor: pointer;
}

/* ========================================
   TYPOGRAPHY
   ======================================== */

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-display);
    font-weight: var(--font-weight-bold);
    line-height: var(--leading-tight);
    letter-spacing: var(--font-tracking-tight);
    color: var(--color-text-primary);
}

h1 {
    font-size: var(--text-hero);
    font-weight: var(--font-weight-black);
    letter-spacing: -0.03em;
}

h2 {
    font-size: var(--text-section);
    font-weight: var(--font-weight-bold);
}

h3 {
    font-size: var(--text-subsection);
    font-weight: var(--font-weight-semibold);
}

h4 {
    font-size: var(--text-card-title);
    font-weight: var(--font-weight-semibold);
}

p {
    color: var(--color-text-secondary);
    max-width: 65ch;
}

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

.text-center {
    text-align: center;
}

.text-uppercase {
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ========================================
   LAYOUT UTILITIES
   ======================================== */

.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding-left: var(--container-padding);
    padding-right: var(--container-padding);
}

.section {
    padding-top: var(--space-3xl);
    padding-bottom: var(--space-3xl);
}

.section--sm {
    padding-top: var(--space-xl);
    padding-bottom: var(--space-xl);
}

/* Flexbox Utilities */
.flex {
    display: flex;
}

.flex-center {
    display: flex;
    align-items: center;
    justify-content: center;
}

.flex-between {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.flex-col {
    flex-direction: column;
}

.gap-xs {
    gap: var(--space-xs);
}

.gap-sm {
    gap: var(--space-sm);
}

.gap-md {
    gap: var(--space-md);
}

.gap-lg {
    gap: var(--space-lg);
}

/* Grid Utilities */
.grid {
    display: grid;
    gap: var(--grid-gap);
}

.grid-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-3 {
    grid-template-columns: repeat(3, 1fr);
}

.grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 768px) {

    .grid-2,
    .grid-3,
    .grid-4 {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   BUTTON STYLES
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: 0.875rem 1.75rem;
    font-family: var(--font-display);
    font-size: var(--text-small);
    font-weight: var(--font-weight-semibold);
    text-transform: none;
    letter-spacing: 0.05em;
    border-radius: var(--radius-sm);
    transition: all var(--transition-base);
    cursor: pointer;
    white-space: nowrap;
}

.btn--primary {
    background-color: var(--color-btn-primary-bg);
    color: var(--color-btn-primary-text);
    border: 2px solid var(--color-btn-primary-bg);
}

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

.btn--primary:active {
    transform: translateY(0);
}

.btn--secondary {
    background-color: var(--color-btn-secondary-bg);
    color: var(--color-text-primary);
    border: 2px solid var(--color-btn-secondary-border);
}

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

.btn--accent {
    background-color: var(--color-accent-primary);
    color: var(--color-text-inverse);
    border: 2px solid var(--color-accent-primary);
}

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

.btn--outline {
    background-color: transparent;
    color: var(--color-accent-primary);
    border: 1px solid var(--color-accent-primary);
    font-weight: 500;
}

.btn--outline:hover {
    background-color: var(--color-accent-primary);
    color: var(--color-text-inverse);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn--lg {
    padding: 1rem 2rem;
    font-size: var(--text-body);
}

.btn--sm {
    padding: 0.5rem 1rem;
    font-size: var(--text-caption);
}

/* ========================================
   CARD STYLES (Pretty Patty Pattern)
   ======================================== */

.card {
    background-color: var(--color-bg-secondary);
    border-radius: var(--radius-md);
    padding: var(--space-md);
    border: 1px solid var(--color-border-light);
    transition: transform var(--transition-base), box-shadow var(--transition-base);
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-hover);
}

.card--white {
    background-color: var(--color-bg-primary);
}

/* ========================================
   SCROLL ANIMATIONS
   ======================================== */

.fade-in-up {
    opacity: 0;
    transform: translateY(24px);
    transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

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

.stagger-1 {
    transition-delay: 0.1s;
}

.stagger-2 {
    transition-delay: 0.2s;
}

.stagger-3 {
    transition-delay: 0.3s;
}

.stagger-4 {
    transition-delay: 0.4s;
}

/* ========================================
   ACCESSIBILITY
   ======================================== */

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

:focus-visible {
    outline: 2px solid var(--color-accent-primary);
    outline-offset: 2px;
}

/* ========================================
   RESPONSIVE BREAKPOINTS
   ======================================== */

@media (max-width: 1024px) {
    :root {
        --container-padding: var(--space-lg);
    }
}

@media (max-width: 768px) {
    :root {
        --container-padding: var(--space-md);
    }

    .section {
        padding-top: var(--space-2xl);
        padding-bottom: var(--space-2xl);
    }

    .btn {
        height: 48px;
        font-size: 0.875rem;
        font-weight: var(--font-weight-medium);
        padding: 0 1.5rem;
    }
}

@media (max-width: 480px) {
    :root {
        --container-padding: var(--space-sm);
    }
}