/* ==========================================================================
   LAYOUT OPTIMIZATION
   Global spacing and responsive improvements
   ========================================================================== */

/* Reset and Base Styles */
:root {
    /* Spacing scale */
    --space-xxs: 0.25rem;   /* 4px */
    --space-xs: 0.5rem;     /* 8px */
    --space-sm: 0.75rem;    /* 12px */
    --space-md: 1rem;       /* 16px */
    --space-lg: 1.5rem;     /* 24px */
    --space-xl: 2rem;       /* 32px */
    --space-2xl: 3rem;      /* 48px */
    --space-3xl: 4rem;      /* 64px */
    
    /* Container widths */
    --container-sm: 100%;
    --container-md: 720px;
    --container-lg: 960px;
    --container-xl: 1140px;
    --container-xxl: 1320px;
}

/* Base element reset */
*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

/* Responsive base font size */
html {
    font-size: 16px;
}

@media (max-width: 768px) {
    html {
        font-size: 15px;
    }
}

/* Consistent vertical rhythm */
body {
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Responsive container */
.container {
    width: 100%;
    padding-right: var(--space-md);
    padding-left: var(--space-md);
    margin-right: auto;
    margin-left: auto;
}

@media (min-width: 576px) {
    .container {
        max-width: var(--container-sm);
    }
}

@media (min-width: 768px) {
    .container {
        max-width: var(--container-md);
    }
}

@media (min-width: 992px) {
    .container {
        max-width: var(--container-lg);
    }
}

@media (min-width: 1200px) {
    .container {
        max-width: var(--container-xl);
    }
}

@media (min-width: 1400px) {
    .container {
        max-width: var(--container-xxl);
    }
}

/* Section spacing */
section {
    padding: var(--space-2xl) 0;
    position: relative;
}

@media (max-width: 991.98px) {
    section {
        padding: var(--space-xl) 0;
    }
}

/* Responsive typography */
h1, .h1 {
    font-size: 2.5rem;
    margin-bottom: var(--space-lg);
    line-height: 1.2;
}

h2, .h2 {
    font-size: 2rem;
    margin-bottom: var(--space-lg);
    line-height: 1.25;
}

h3, .h3 {
    font-size: 1.75rem;
    margin-bottom: var(--space-md);
    line-height: 1.3;
}

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

/* Responsive images */
img {
    max-width: 100%;
    height: auto;
    display: block;
}

/* Form elements */
.form-control {
    padding: var(--space-sm) var(--space-md);
    margin-bottom: var(--space-md);
    width: 100%;
}

/* Buttons */
.btn {
    padding: var(--space-sm) var(--space-lg);
    display: inline-block;
    text-align: center;
    white-space: nowrap;
    vertical-align: middle;
    user-select: none;
    border: 1px solid transparent;
    transition: all 0.3s ease;
}

/* Cards */
.card {
    border: 1px solid rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    overflow: hidden;
    transition: transform 0.3s ease, box-shadow 0.3s ease;
    margin-bottom: var(--space-lg);
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.1);
}

/* Grid system */
.row {
    display: flex;
    flex-wrap: wrap;
    margin-right: calc(-0.5 * var(--space-md));
    margin-left: calc(-0.5 * var(--space-md));
}

[class*="col-"] {
    padding-right: calc(0.5 * var(--space-md));
    padding-left: calc(0.5 * var(--space-md));
    width: 100%;
    position: relative;
}

/* Responsive utilities */
.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: var(--space-xs) !important; }
.mb-2 { margin-bottom: var(--space-sm) !important; }
.mb-3 { margin-bottom: var(--space-md) !important; }
.mb-4 { margin-bottom: var(--space-lg) !important; }
.mb-5 { margin-bottom: var(--space-xl) !important; }

.mt-0 { margin-top: 0 !important; }
.mt-1 { margin-top: var(--space-xs) !important; }
.mt-2 { margin-top: var(--space-sm) !important; }
.mt-3 { margin-top: var(--space-md) !important; }
.mt-4 { margin-top: var(--space-lg) !important; }
.mt-5 { margin-top: var(--space-xl) !important; }

.p-0 { padding: 0 !important; }
.p-1 { padding: var(--space-xs) !important; }
.p-2 { padding: var(--space-sm) !important; }
.p-3 { padding: var(--space-md) !important; }
.p-4 { padding: var(--space-lg) !important; }
.p-5 { padding: var(--space-xl) !important; }

/* Responsive display utilities */
.d-none { display: none !important; }
.d-block { display: block !important; }
.d-flex { display: flex !important; }

@media (min-width: 768px) {
    .d-md-none { display: none !important; }
    .d-md-block { display: block !important; }
    .d-md-flex { display: flex !important; }
}

/* Print styles */
@media print {
    .no-print,
    .no-print * {
        display: none !important;
    }
    
    body {
        padding: 0.5in;
        font-size: 12pt;
        color: #000;
    }
    
    .container {
        width: auto;
        max-width: 100%;
    }
}