/* Site-wide shared styles - Core + Common Layouts */
:root {
    --primary-color: #0078D4;
    --primary-dark: #005A9E;
    --secondary-color: #107C10;
    --accent-color: #FF4081;
    --dark-color: #1E1E1E;
    --light-gray: #F8F9FA;
    --medium-gray: #6C757D;
    --border-color: #E5E7EB;
    --white: #FFFFFF;
    --gradient-primary: linear-gradient(135deg, #0078D4 0%, #005A9E 100%);
    --gradient-secondary: linear-gradient(135deg, #107C10 0%, #0B5394 100%);
    --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);
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--dark-color);
    background-color: var(--white);
}

html {
    scroll-behavior: smooth;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1rem;
}

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

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }

p {
    margin-bottom: 1rem;
}

/* ================================== */
/* CORE BUTTONS */
/* ================================== */

.btn {
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--white);
    box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
    box-shadow: var(--shadow-md);
}

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

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

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

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

/* ================================== */
/* PAGE WRAPPER - STANDARD */
/* ================================== */

.page-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.app-body-with-header {
    padding-top: 0; /* Adjusted for fixed navbar */
}

/* ================================== */
/* COMMON PAGE HEADERS */
/* ================================== */

.page-header {
    padding: 8rem 0 2rem;
    background: linear-gradient(135deg, #f8faff 0%, #e6f3ff 100%);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.page-header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%230078d4" stroke-width="0.3" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    opacity: 0.3;
}

.page-header.primary {
    background: linear-gradient(135deg, #f8faff 0%, #e6f3ff 100%);
    color: var(--dark-color);
}

.page-header.hero {
    padding: 10rem 0 6rem;
}

.page-header-content {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.page-header h1 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    color: #0078d4;
    text-shadow: 0 2px 4px rgba(0, 120, 212, 0.1);
    position: relative;
}

.page-header.hero h1 {
    font-size: 3.5rem;
    font-weight: 800;
}

.page-header p {
    font-size: 1.25rem;
    color: #605e5c;
    margin-bottom: 2rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    position: relative;
}

.page-header .highlight {
    color: #0078d4;
    font-weight: 600;
}

.page-header .emphasis {
    background: linear-gradient(120deg, #e6f3ff 0%, #cce7ff 100%);
    padding: 0.2rem 0.5rem;
    color: #005a9e;
    font-weight: 500;
}

/* ================================== */
/* CONTENT SECTIONS */
/* ================================== */

.content-section {
    padding: 4rem 0;
    flex: 1;
    background: var(--white);
}

.content-section:nth-child(even) {
    background: #fafbfc;
}

.content-section h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #0078d4;
    margin-bottom: 1rem;
    text-align: center;
}

.content-section h3 {
    font-size: 1.8rem;
    font-weight: 600;
    color: #005a9e;
    margin-bottom: 1rem;
}

.content-section p {
    font-size: 1.125rem;
    line-height: 1.7;
    color: #323130;
    margin-bottom: 1.5rem;
}

.content-section .highlight {
    color: #0078d4;
    font-weight: 600;
}

.content-section .emphasis {
    background: linear-gradient(120deg, #e6f3ff 0%, #cce7ff 100%);
    padding: 0.2rem 0.5rem;
    color: #005a9e;
    font-weight: 500;
}

/* ================================== */
/* LAYOUT GRIDS */
/* ================================== */

.content-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.content-grid.center {
    align-items: center;
}

.content-grid.three-col {
    grid-template-columns: repeat(3, 1fr);
    gap: 3rem;
}

.content-grid.auto-fit {
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

/* ================================== */
/* BASIC CARDS */
/* ================================== */

.card {
    background: var(--white);
    padding: 2rem;
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.card.featured {
    border: 2px solid var(--primary-color);
    box-shadow: var(--shadow-md);
}

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

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: var(--white);
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

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

@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.5rem; }
    
    .page-header {
        padding: 6rem 0 1.5rem;
    }
    
    .page-header.hero {
        padding: 6rem 0 1.5rem;
    }
    
    .page-header h1 {
        font-size: 2.5rem;
    }
    
    .page-header.hero h1 {
        font-size: 2.5rem;
    }
    
    .page-header p {
        font-size: 1.125rem;
        padding: 0 1rem;
    }
    
    .content-section {
        padding: 2rem 0;
    }

    .content-grid,
    .content-grid.three-col {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .content-grid.auto-fit {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .card {
        padding: 1.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 0.75rem;
    }
    
    .page-header {
        padding: 6rem 0 1.5rem;
    }
    
    .page-header.hero {
        padding: 6rem 0 1.5rem;
    }
    
    .page-header h1 {
        font-size: 2rem;
    }
    
    .page-header.hero h1 {
        font-size: 2rem;
    }
    
    .card {
        padding: 1rem;
    }
    
    .content-section {
        padding: 1.5rem 0;
    }
}