/* ============================================
   GOOD DOG SPA - Layout System
   ============================================ */

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

.container-sm {
    max-width: 800px;
}

.container-lg {
    max-width: 1600px;
}

.container-fluid {
    max-width: 100%;
}

/* Section Spacing
   ============================================ */
.section {
    padding: var(--space-16) 0;
}

.section-sm {
    padding: var(--space-10) 0;
}

.section-lg {
    padding: var(--space-24) 0;
}

/* Grid System
   ============================================ */
.grid {
    display: grid;
    gap: var(--space-6);
}

.grid-cols-1 { grid-template-columns: repeat(1, 1fr); }
.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); }
.grid-cols-6 { grid-template-columns: repeat(6, 1fr); }

/* Auto-fit grids */
.grid-auto-sm {
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
}

.grid-auto-md {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

.grid-auto-lg {
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
}

/* Gap utilities */
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-5 { gap: var(--space-5); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }
.gap-10 { gap: var(--space-10); }

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

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

.flex-wrap {
    flex-wrap: wrap;
}

.flex-1 {
    flex: 1;
}

.flex-shrink-0 {
    flex-shrink: 0;
}

/* Justify Content */
.justify-start { justify-content: flex-start; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }

/* Align Items */
.items-start { align-items: flex-start; }
.items-center { align-items: center; }
.items-end { align-items: flex-end; }
.items-stretch { align-items: stretch; }

/* Text Alignment
   ============================================ */
.text-left { text-align: left; }
.text-center { text-align: center; }
.text-right { text-align: right; }

/* Display Utilities
   ============================================ */
.block { display: block; }
.inline-block { display: inline-block; }
.inline { display: inline; }
.hidden { display: none; }

/* Position Utilities
   ============================================ */
.relative { position: relative; }
.absolute { position: absolute; }
.fixed { position: fixed; }
.sticky { position: sticky; }

/* Width & Height
   ============================================ */
.w-full { width: 100%; }
.w-auto { width: auto; }
.h-full { height: 100%; }
.h-screen { height: 100vh; }
.min-h-screen { min-height: 100vh; }

/* Aspect Ratios
   ============================================ */
.aspect-square { aspect-ratio: 1 / 1; }
.aspect-video { aspect-ratio: 16 / 9; }
.aspect-photo { aspect-ratio: 4 / 3; }

/* Overflow
   ============================================ */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.overflow-x-auto { overflow-x: auto; }
.overflow-y-auto { overflow-y: auto; }

/* Two Column Layout (Content + Sidebar)
   ============================================ */
.layout-sidebar {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
}

@media (min-width: 1024px) {
    .layout-sidebar {
        grid-template-columns: 1fr 350px;
    }
    
    .layout-sidebar-left {
        grid-template-columns: 350px 1fr;
    }
}

/* Hero Layout
   ============================================ */
.hero {
    min-height: calc(100vh - var(--header-height));
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-10);
    align-items: center;
}

@media (min-width: 968px) {
    .hero-content {
        grid-template-columns: 1fr 1fr;
    }
}

/* Split Layout (50/50)
   ============================================ */
.split {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-8);
}

@media (min-width: 768px) {
    .split {
        grid-template-columns: 1fr 1fr;
    }
}

/* Page Header
   ============================================ */
.page-header {
    padding: var(--space-12) 0;
    background: linear-gradient(135deg, var(--color-blue-light) 0%, var(--color-yellow-light) 100%);
    text-align: center;
}

.page-header h1 {
    margin-bottom: var(--space-4);
}

.page-header p {
    max-width: 600px;
    margin: 0 auto;
    color: var(--color-gray-600);
    font-size: var(--font-size-lg);
}

/* Responsive Breakpoints
   ============================================ */

/* Mobile First - Default styles are mobile */

/* Small devices (landscape phones, 576px and up) */
@media (min-width: 576px) {
    .sm\:hidden { display: none; }
    .sm\:block { display: block; }
    .sm\:flex { display: flex; }
    .sm\:grid { display: grid; }
    .sm\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
}

/* Medium devices (tablets, 768px and up) */
@media (min-width: 768px) {
    :root {
        --container-padding: var(--space-8);
    }
    
    .md\:hidden { display: none; }
    .md\:block { display: block; }
    .md\:flex { display: flex; }
    .md\:grid { display: grid; }
    .md\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
    .md\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
    .md\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
    
    .md\:text-left { text-align: left; }
    .md\:text-center { text-align: center; }
    .md\:text-right { text-align: right; }
}

/* Large devices (desktops, 1024px and up) */
@media (min-width: 1024px) {
    .lg\:hidden { display: none; }
    .lg\:block { display: block; }
    .lg\:flex { display: flex; }
    .lg\:grid { display: grid; }
    .lg\:grid-cols-2 { grid-template-columns: repeat(2, 1fr); }
    .lg\:grid-cols-3 { grid-template-columns: repeat(3, 1fr); }
    .lg\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
    .lg\:grid-cols-5 { grid-template-columns: repeat(5, 1fr); }
    .lg\:grid-cols-6 { grid-template-columns: repeat(6, 1fr); }
}

/* Extra large devices (large desktops, 1280px and up) */
@media (min-width: 1280px) {
    .xl\:hidden { display: none; }
    .xl\:block { display: block; }
    .xl\:flex { display: flex; }
    .xl\:grid { display: grid; }
    .xl\:grid-cols-4 { grid-template-columns: repeat(4, 1fr); }
    .xl\:grid-cols-5 { grid-template-columns: repeat(5, 1fr); }
    .xl\:grid-cols-6 { grid-template-columns: repeat(6, 1fr); }
}

/* Mobile-only utilities */
@media (max-width: 767px) {
    .mobile-only { display: block; }
    .desktop-only { display: none; }
    
    h1 { font-size: var(--font-size-3xl); }
    h2 { font-size: var(--font-size-2xl); }
    h3 { font-size: var(--font-size-xl); }
}

@media (min-width: 768px) {
    .mobile-only { display: none; }
    .desktop-only { display: block; }
}

/* Form Row */
.form-row {
    display: grid;
    grid-template-columns: 1fr;
    gap: var(--space-4);
}

@media (min-width: 576px) {
    .form-row {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Table Responsive */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* Stack on mobile, horizontal on desktop */
.stack {
    display: flex;
    flex-direction: column;
    gap: var(--space-4);
}

@media (min-width: 768px) {
    .stack-horizontal {
        flex-direction: row;
        align-items: center;
    }
}