/* Base Styles */
@import url('variables.css');

/* Reset & Box Sizing */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 16px;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
}

body {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    font-weight: 400;
    line-height: 1.5;
    color: var(--color-dark);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 400;
    line-height: 1.2;
    color: var(--color-dark);
    margin-bottom: var(--spacing-md);
}

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

p {
    margin-bottom: var(--spacing-md);
}

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

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

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

/* Selection */
::selection {
    background-color: var(--color-primary);
    color: var(--color-white);
}

/* Container */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin: 0 auto;
    padding: 0 var(--container-padding);
}

.container-fluid {
    width: 100%;
    padding: 0 var(--container-padding);
}

/* Utility Classes */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }

.grid { display: grid; }
.grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
.grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
.grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
.grid-cols-5 { grid-template-columns: repeat(5, 1fr); }

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

.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }

.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

.w-full { width: 100%; }
.h-full { height: 100%; }

/* Margins */
.m-0 { margin: 0; }
.mt-1 { margin-top: var(--spacing-md); }
.mt-2 { margin-top: var(--spacing-lg); }
.mt-3 { margin-top: var(--spacing-2xl); }
.mb-1 { margin-bottom: var(--spacing-md); }
.mb-2 { margin-bottom: var(--spacing-lg); }
.mb-3 { margin-bottom: var(--spacing-2xl); }
.ml-1 { margin-left: var(--spacing-md); }
.ml-2 { margin-left: var(--spacing-lg); }
.mr-1 { margin-right: var(--spacing-md); }
.mr-2 { margin-right: var(--spacing-lg); }

/* Paddings */
.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-md); }
.p-2 { padding: var(--spacing-lg); }
.py-1 { padding-top: var(--spacing-md); padding-bottom: var(--spacing-md); }
.py-2 { padding-top: var(--spacing-lg); padding-bottom: var(--spacing-lg); }
.px-1 { padding-left: var(--spacing-md); padding-right: var(--spacing-md); }
.px-2 { padding-left: var(--spacing-lg); padding-right: var(--spacing-lg); }

/* Colors */
.text-primary { color: var(--color-primary); }
.text-dark { color: var(--color-dark); }
.text-white { color: var(--color-white); }
.text-gray { color: var(--color-gray-medium); }

.bg-primary { background-color: var(--color-primary); }
.bg-dark { background-color: var(--color-dark); }
.bg-white { background-color: var(--color-white); }
.bg-gray-light { background-color: var(--color-gray-light); }
.bg-gray-lighter { background-color: var(--color-gray-lighter); }

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 25px;
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 400;
    line-height: 1;
    text-align: center;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

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

.btn-primary:disabled {
    background-color: var(--color-primary-disabled);
    cursor: not-allowed;
}

.btn-secondary {
    background-color: var(--color-white);
    color: var(--color-dark);
    border: 1px solid var(--color-border);
}

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

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

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

.btn-sm {
    padding: 8px 16px;
    font-size: 13px;
}

.btn-lg {
    padding: 16px 32px;
    font-size: 17px;
}

.btn-icon {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.btn-icon svg {
    width: 16px;
    height: 16px;
}

/* Forms */
input[type="text"],
input[type="email"],
input[type="password"],
input[type="tel"],
input[type="number"],
input[type="search"],
input[type="url"],
textarea,
select {
    width: 100%;
    padding: 12px 13px;
    font-family: var(--font-primary);
    font-size: var(--text-base);
    color: var(--color-dark);
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    transition: border-color var(--transition-fast);
}

input:focus,
textarea:focus,
select:focus {
    outline: none;
    border-color: var(--color-primary);
}

input[type="checkbox"],
input[type="radio"] {
    width: 20px;
    height: 20px;
    accent-color: var(--color-primary);
}

label {
    display: block;
    font-family: var(--font-primary);
    font-weight: 600;
    font-size: var(--text-base);
    color: var(--color-dark);
    margin-bottom: var(--spacing-sm);
}

/* Cards */
.card {
    background-color: var(--color-white);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.card-body {
    padding: var(--spacing-lg);
}

/* Badges */
.badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 4px 10px;
    font-family: var(--font-heading);
    font-size: var(--text-xs);
    font-weight: 400;
    text-transform: uppercase;
    border-radius: var(--radius-sm);
}

.badge-sale {
    background-color: var(--color-primary);
    color: var(--color-white);
    border: 1.3px solid var(--color-primary);
}

/* Lists */
ul, ol {
    list-style: none;
}

/* Tables */
table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: var(--spacing-sm) var(--spacing-md);
    text-align: left;
    border-bottom: 1px solid var(--color-gray-light);
}

th {
    font-family: var(--font-heading);
    font-weight: 400;
}

/* Screen Reader Only */
.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;
}

/* Responsive Breakpoints */
@media (max-width: 1200px) {
    .container {
        max-width: 1140px;
    }
}

@media (max-width: 992px) {
    .grid-cols-4 { grid-template-columns: repeat(3, 1fr); }
    .grid-cols-5 { grid-template-columns: repeat(3, 1fr); }
    
    .hide-tablet { display: none; }
}

@media (max-width: 768px) {
    .grid-cols-3 { grid-template-columns: repeat(2, 1fr); }
    .grid-cols-4 { grid-template-columns: repeat(2, 1fr); }
    .grid-cols-5 { grid-template-columns: repeat(2, 1fr); }
    
    .hide-mobile { display: none; }
    .show-mobile { display: block; }
}

@media (max-width: 480px) {
    .grid-cols-2 { grid-template-columns: 1fr; }
    .grid-cols-3 { grid-template-columns: 1fr; }
}