/*
Theme Name:  Giftcard AI Theme
Theme URI:   https://example.com/giftcard-ai-theme
Description: A custom, lightweight, high-conversion WooCommerce theme designed for gift card storefronts.
Version:     1.0.0
Author:      Giftcard AI Team
Author URI:  https://example.com
License:     GNU General Public License v2 or later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: giftcard-ai-theme
Tags:        woocommerce, e-commerce, custom, lightweight, high-conversion
*/

/* ==========================================================================
   1. CSS Custom Properties (Design Tokens) — Mobile First
   ========================================================================== */
:root {
    /* Color Palette */
    --color-primary:        #7C3AED; /* Violet 600 */
    --color-primary-dark:   #6D28D9; /* Violet 700 */
    --color-primary-light:  #EDE9FE; /* Violet 100 */
    --color-accent:         #F59E0B; /* Amber 400 */
    --color-success:        #10B981; /* Emerald 500 */
    --color-danger:         #EF4444; /* Red 500 */
    --color-neutral-100:    #F9FAFB;
    --color-neutral-200:    #F3F4F6;
    --color-neutral-300:    #E5E7EB;
    --color-neutral-600:    #4B5563;
    --color-neutral-800:    #1F2937;
    --color-neutral-900:    #111827;
    --color-white:          #FFFFFF;

    /* Typography */
    --font-sans:   'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-size-xs:   0.75rem;   /* 12px */
    --font-size-sm:   0.875rem;  /* 14px */
    --font-size-base: 1rem;      /* 16px */
    --font-size-lg:   1.125rem;  /* 18px */
    --font-size-xl:   1.25rem;   /* 20px */
    --font-size-2xl:  1.5rem;    /* 24px */
    --font-size-3xl:  1.875rem;  /* 30px */
    --font-size-4xl:  2.25rem;   /* 36px */
    --font-weight-normal: 400;
    --font-weight-medium: 500;
    --font-weight-semibold: 600;
    --font-weight-bold: 700;
    --line-height-tight:  1.25;
    --line-height-normal: 1.5;
    --line-height-loose:  1.75;

    /* Spacing */
    --space-1:  0.25rem;
    --space-2:  0.5rem;
    --space-3:  0.75rem;
    --space-4:  1rem;
    --space-6:  1.5rem;
    --space-8:  2rem;
    --space-12: 3rem;
    --space-16: 4rem;
    --space-24: 6rem;

    /* Layout */
    --container-max:  1200px;
    --container-pad:  var(--space-4);

    /* Borders & Radius */
    --radius-sm:  4px;
    --radius-md:  8px;
    --radius-lg:  12px;
    --radius-xl:  16px;
    --radius-full: 9999px;
    --border-color: var(--color-neutral-300);

    /* Shadows */
    --shadow-sm:  0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md:  0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg:  0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl:  0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Transitions */
    --transition-fast:   150ms ease-in-out;
    --transition-normal: 250ms ease-in-out;
    --transition-slow:   400ms ease-in-out;

    /* Header */
    --header-height: 64px;
}

/* Responsive token adjustments */
@media (min-width: 768px) {
    :root {
        --container-pad: var(--space-8);
        --header-height: 72px;
    }
}

@media (min-width: 1024px) {
    :root {
        --container-pad: var(--space-12);
    }
}


/* ==========================================================================
   2. Modern CSS Reset
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    font-size: 100%;
    scroll-behavior: smooth;
    -webkit-text-size-adjust: 100%;
    hanging-punctuation: first last;
}

body {
    font-family: var(--font-sans);
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    line-height: var(--line-height-normal);
    color: var(--color-neutral-800);
    background-color: var(--color-neutral-100);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    min-height: 100dvh;
}

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

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

p, h1, h2, h3, h4, h5, h6 {
    overflow-wrap: break-word;
}

h1, h2, h3, h4, h5, h6 {
    font-weight: var(--font-weight-bold);
    line-height: var(--line-height-tight);
    color: var(--color-neutral-900);
}

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

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

ul, ol {
    list-style: none;
}

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


/* ==========================================================================
   3. Global Layout Utilities
   ========================================================================== */
.container {
    width: 100%;
    max-width: var(--container-max);
    margin-inline: auto;
    padding-inline: var(--container-pad);
}

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

/* Site wrapper for sticky footer */
.site {
    display: flex;
    flex-direction: column;
    min-height: 100dvh;
}

.site-content {
    flex: 1;
}


/* ==========================================================================
   4. Global Components
   ========================================================================== */

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-6) !important;
    border-radius: var(--radius-md);
    font-size: var(--font-size-base) !important;
    font-weight: var(--font-weight-semibold) !important;
    text-align: center;
    white-space: nowrap;
    cursor: pointer;
    transition: background-color var(--transition-fast),
                transform var(--transition-fast),
                box-shadow var(--transition-fast);
    border: 2px solid transparent;
}

.btn:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

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

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

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

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

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

/* Skip to content (Accessibility) */
.skip-link {
    position: absolute;
    top: -100%;
    left: var(--space-4);
    z-index: 9999;
    padding: var(--space-2) var(--space-4);
    background-color: var(--color-primary);
    color: var(--color-white);
    border-radius: var(--radius-md);
    font-weight: var(--font-weight-semibold);
    transition: top var(--transition-fast);
}

.skip-link:focus {
    top: var(--space-4);
    color: var(--color-white);
}


/* ==========================================================================
   5. Site Header
   ========================================================================== */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    height: var(--header-height);
    background-color: #fff;
    border-bottom: 1px solid #E5E5E5;
}


.site-header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.site-logo {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-neutral-900);
    letter-spacing: -0.025em;
}

.site-logo span {
    color: var(--color-primary);
}

.site-nav ul {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.site-nav a {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-neutral-600);
    transition: color var(--transition-fast);
}

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


/* ==========================================================================
   6. Site Footer
   ========================================================================== */
.site-footer {
    background-color: var(--color-neutral-900);
    color: var(--color-neutral-300);
    padding-block: var(--space-12);
    margin-top: auto;
}

.site-footer .container {
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    text-align: center;
}

@media (min-width: 768px) {
    .site-footer .container {
        flex-direction: row;
        align-items: center;
        justify-content: space-between;
        text-align: left;
    }
}

.footer-brand {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
}

.footer-copy {
    font-size: var(--font-size-sm);
    color: var(--color-neutral-600);
}

.footer-links {
    display: flex;
    gap: var(--space-6);
    justify-content: center;
}

.footer-links a {
    font-size: var(--font-size-sm);
    color: var(--color-neutral-600);
    transition: color var(--transition-fast);
}

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