/* ============================================
   Brij & Sunita Agrawal Foundation
   Main Stylesheet
   ============================================ */

/* CSS Custom Properties */
:root {
    /* Colors */
    --color-primary: #1a365d;
    --color-primary-dark: #0f2744;
    --color-primary-light: #2c5282;
    --color-secondary: #c6a962;
    --color-secondary-light: #d4bc7d;
    --color-accent: #744210;
    --color-text: #2d3748;
    --color-text-light: #4a5568;
    --color-text-muted: #718096;
    --color-background: #ffffff;
    --color-background-alt: #f7fafc;
    --color-background-dark: #edf2f7;
    --color-border: #e2e8f0;

    /* Typography */
    --font-heading: 'Playfair Display', Georgia, serif;
    --font-body: 'Source Sans Pro', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    --spacing-3xl: 4rem;
    --spacing-4xl: 6rem;

    /* Layout */
    --max-width: 1200px;
    --header-height: 80px;

    /* 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);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 300ms ease;
}

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

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-text);
    background-color: var(--color-background);
}

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

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

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

ul {
    list-style: none;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 600;
    line-height: 1.2;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

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

p:last-child {
    margin-bottom: 0;
}

.lead {
    font-size: 1.25rem;
    line-height: 1.7;
    color: var(--color-text-light);
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: var(--spacing-md) var(--spacing-xl);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    text-align: center;
    border: 2px solid transparent;
    border-radius: 4px;
    cursor: pointer;
    transition: all var(--transition-normal);
}

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

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

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

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

.btn-small {
    padding: var(--spacing-sm) var(--spacing-md);
    font-size: 0.875rem;
}

.btn-full {
    width: 100%;
}

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--header-height);
    background-color: var(--color-background);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
}

.nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.nav-brand a {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--color-primary);
}

.nav-brand a:hover {
    color: var(--color-secondary);
}

.nav-menu {
    display: flex;
    gap: var(--spacing-xl);
}

.nav-menu a {
    font-weight: 600;
    color: var(--color-text);
    padding: var(--spacing-sm) 0;
    border-bottom: 2px solid transparent;
}

.nav-menu a:hover,
.nav-menu a.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-secondary);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
}

.nav-toggle span {
    display: block;
    width: 25px;
    height: 2px;
    background-color: var(--color-primary);
    transition: var(--transition-fast);
}

/* Hero Section */
.hero {
    min-height: 82vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    padding: var(--header-height) var(--spacing-lg) var(--spacing-3xl);
}

.hero-content {
    max-width: 800px;
}

.hero h1 {
    font-size: 3.5rem;
    color: white;
    margin-bottom: var(--spacing-lg);
}

.hero-tagline {
    font-size: 1.5rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-2xl);
}

/* Page Hero (inner pages) */
.page-hero {
    background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
    color: white;
    text-align: center;
    padding: calc(var(--header-height) + var(--spacing-3xl)) var(--spacing-lg) var(--spacing-3xl);
}

.page-hero h1 {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.page-hero p {
    font-size: 1.25rem;
    opacity: 0.9;
}

/* Sections */
section {
    padding: var(--spacing-4xl) 0;
}

section h2 {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
}

.alt-bg {
    background-color: var(--color-background-alt);
}

/* Mission Section */
.mission-statement {
    max-width: 800px;
    margin: 0 auto var(--spacing-3xl);
    text-align: center;
    font-size: 1.25rem;
    color: var(--color-text-light);
}

.mission-values {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-xl);
}

.value-card {
    text-align: center;
    padding: var(--spacing-2xl);
    background: white;
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.value-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.value-icon {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-lg);
}

.value-card h3 {
    margin-bottom: var(--spacing-md);
}

/* About Preview Section */
.about-grid {
    display: grid;
    grid-template-columns: 1fr 1.5fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.image-placeholder {
    background: linear-gradient(135deg, var(--color-background-dark) 0%, var(--color-border) 100%);
    border-radius: 8px;
    aspect-ratio: 4/3;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--color-text-muted);
    font-style: italic;
    text-align: center;
    padding: var(--spacing-xl);
}

.image-placeholder.large {
    aspect-ratio: 3/4;
    max-width: 400px;
}

.about-text h2 {
    text-align: left;
}

/* Impact Stats */
.impact-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-xl);
    text-align: center;
}

.stat {
    padding: var(--spacing-xl);
}

.stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.65rem;
    line-height: 1.15;
    font-weight: 700;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
}

.stat-label {
    font-size: 0.95rem;
    line-height: 1.45;
    color: var(--color-text-light);
    letter-spacing: 0;
}

/* Quote Section */
.quote-section {
    background: var(--color-primary);
    color: white;
    text-align: center;
}

.quote-section blockquote p {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-style: italic;
    margin-bottom: var(--spacing-lg);
}

.quote-section cite {
    font-size: 1.125rem;
    opacity: 0.8;
}

/* Inline Quote */
.inline-quote {
    border-left: 4px solid var(--color-secondary);
    padding-left: var(--spacing-xl);
    margin: var(--spacing-xl) 0;
}

.inline-quote p {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-style: italic;
    color: var(--color-text-light);
}

.inline-quote cite {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* Featured Quote */
.featured-quote {
    max-width: 700px;
    margin: 0 auto;
    text-align: center;
    padding: var(--spacing-2xl);
    background: var(--color-background-alt);
    border-radius: 8px;
}

.featured-quote p {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-style: italic;
    color: var(--color-primary);
    margin-bottom: var(--spacing-md);
}

/* Highlights Grid */
.highlights-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: var(--spacing-xl);
}

.highlight-card {
    background: white;
    padding: var(--spacing-2xl);
    border-radius: 8px;
    box-shadow: var(--shadow-md);
}

.highlight-card h3 {
    margin-bottom: var(--spacing-md);
}

.highlight-card a {
    display: inline-block;
    margin-top: var(--spacing-md);
    font-weight: 600;
}

/* Content Blocks */
.content-block {
    max-width: 800px;
    margin: 0 auto;
}

.content-block.centered {
    text-align: center;
}

/* Bio Sections */
.bio-intro-grid {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-3xl);
    align-items: start;
}

.bio-summary .lead {
    margin-bottom: var(--spacing-lg);
}

/* Timeline Sections */
.timeline-section {
    padding: var(--spacing-3xl) 0;
}

.timeline-section h2 {
    text-align: left;
    margin-bottom: var(--spacing-xl);
}

.career-section {
    margin-bottom: var(--spacing-2xl);
}

.career-section:last-child {
    margin-bottom: 0;
}

.career-section h3 {
    color: var(--color-secondary);
    margin-bottom: var(--spacing-md);
}

/* Awards Grid */
.awards-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-2xl);
}

.award-card {
    background: white;
    padding: var(--spacing-xl);
    border-radius: 8px;
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--color-secondary);
}

.award-year {
    display: block;
    font-size: 0.875rem;
    color: var(--color-secondary);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.award-card h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xs);
}

.award-card p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* Philanthropy Sections */
.philanthropy-intro {
    padding: var(--spacing-3xl) 0;
}

.philanthropy-section {
    padding: var(--spacing-3xl) 0;
}

.philanthropy-section h2 {
    text-align: left;
    margin-bottom: var(--spacing-xl);
}

.philanthropy-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-3xl);
}

.philanthropy-content h3 {
    color: var(--color-secondary);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.philanthropy-content h3:first-child {
    margin-top: 0;
}

/* Impact Box */
.impact-box {
    background: white;
    padding: var(--spacing-xl);
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    position: sticky;
    top: calc(var(--header-height) + var(--spacing-xl));
}

.impact-box h4 {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--color-border);
}

.impact-item {
    text-align: center;
    padding: var(--spacing-md) 0;
    border-bottom: 1px solid var(--color-border);
}

.impact-item:last-child {
    border-bottom: none;
}

.impact-item .amount {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-secondary);
}

.impact-item .description {
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* Focus Areas */
.focus-areas {
    margin: var(--spacing-lg) 0;
    padding-left: var(--spacing-xl);
}

.focus-areas li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.focus-areas li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5em;
    width: 8px;
    height: 8px;
    background-color: var(--color-secondary);
    border-radius: 50%;
}

/* Community Sections */
.org-card {
    background: white;
    border-radius: 8px;
    box-shadow: var(--shadow-md);
    overflow: hidden;
}

.org-header {
    background: var(--color-primary);
    color: white;
    padding: var(--spacing-xl);
}

.org-header h2 {
    color: white;
    text-align: left;
    margin-bottom: var(--spacing-sm);
}

.org-role {
    display: inline-block;
    background: var(--color-secondary);
    color: var(--color-primary-dark);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 600;
}

.org-content {
    padding: var(--spacing-2xl);
}

.org-content h3 {
    color: var(--color-secondary);
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
}

.org-content ul {
    padding-left: var(--spacing-xl);
}

.org-content ul li {
    position: relative;
    padding-left: var(--spacing-lg);
    margin-bottom: var(--spacing-sm);
}

.org-content ul li::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0.5em;
    width: 8px;
    height: 8px;
    background-color: var(--color-secondary);
    border-radius: 50%;
}

/* Mentorship Section */
.mentorship-section {
    background: var(--color-primary);
    color: white;
}

.mentorship-section h2 {
    color: white;
}

.mentorship-section p {
    opacity: 0.9;
}

/* Contact Section */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: var(--spacing-3xl);
}

.contact-info h2 {
    text-align: left;
}

.contact-details {
    margin: var(--spacing-2xl) 0;
}

.contact-item {
    margin-bottom: var(--spacing-xl);
}

.contact-item h3 {
    font-size: 1rem;
    color: var(--color-secondary);
    margin-bottom: var(--spacing-sm);
}

.contact-item ul {
    padding-left: var(--spacing-lg);
}

.contact-item ul li {
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-xs);
    position: relative;
}

.contact-item ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-secondary);
}

.affiliated-orgs h3 {
    font-size: 1.125rem;
    margin-bottom: var(--spacing-sm);
}

.affiliated-orgs ul {
    padding-left: var(--spacing-lg);
}

.affiliated-orgs ul li {
    padding-left: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.affiliated-orgs ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-secondary);
}

/* Contact Form */
.contact-form-container,
.contact-card {
    background: var(--color-background-alt);
    padding: var(--spacing-2xl);
    border-radius: 8px;
}

.contact-form-container h2,
.contact-card h2 {
    text-align: left;
    margin-bottom: var(--spacing-xl);
}

.contact-actions {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    margin-top: var(--spacing-xl);
}

.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-md);
    font-family: var(--font-body);
    font-size: 1rem;
    border: 1px solid var(--color-border);
    border-radius: 4px;
    background: white;
    transition: border-color var(--transition-fast);
}

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

.form-note {
    margin-top: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

/* Media Section */
.media-section {
    background: var(--color-background-alt);
}

.media-section h2 {
    margin-bottom: var(--spacing-md);
}

.section-intro {
    text-align: center;
    max-width: 600px;
    margin: 0 auto var(--spacing-2xl);
    color: var(--color-text-light);
}

.media-sources {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.media-sources h3 {
    margin-bottom: var(--spacing-lg);
}

.media-list {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-md);
}

.media-list li {
    background: white;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: 4px;
    font-size: 0.875rem;
    color: var(--color-text-light);
}

.source-links {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm) var(--spacing-md);
    margin-top: var(--spacing-xl);
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.source-links a {
    font-weight: 600;
}

/* CTA Section */
.cta-section {
    background: var(--color-background-dark);
    text-align: center;
}

.cta-section h2 {
    margin-bottom: var(--spacing-md);
}

.cta-section p {
    max-width: 600px;
    margin: 0 auto var(--spacing-xl);
    color: var(--color-text-light);
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    justify-content: center;
    flex-wrap: wrap;
}

/* Footer */
.footer {
    background: var(--color-primary-dark);
    color: white;
    padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr 1.5fr;
    gap: var(--spacing-3xl);
    padding-bottom: var(--spacing-2xl);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand h3 {
    color: white;
    margin-bottom: var(--spacing-sm);
}

.footer-brand p {
    opacity: 0.7;
}

.footer-links h4,
.footer-contact h4 {
    color: var(--color-secondary);
    font-size: 1rem;
    margin-bottom: var(--spacing-lg);
}

.footer-links ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
}

.footer-links a:hover {
    color: white;
}

.footer-contact p {
    opacity: 0.7;
    margin-bottom: var(--spacing-lg);
}

.footer-contact .btn {
    background: transparent;
    border-color: var(--color-secondary);
    color: var(--color-secondary);
}

.footer-contact .btn:hover {
    background: var(--color-secondary);
    color: var(--color-primary-dark);
}

.footer-bottom {
    padding-top: var(--spacing-xl);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    opacity: 0.5;
}

/* Responsive Design */
@media (max-width: 1024px) {
    .about-grid,
    .bio-intro-grid,
    .philanthropy-grid,
    .contact-grid {
        grid-template-columns: 1fr;
    }

    .image-placeholder.large {
        max-width: 300px;
        margin: 0 auto;
    }

    .impact-box {
        position: static;
    }

    .philanthropy-sidebar {
        order: -1;
    }

    .footer-content {
        grid-template-columns: 1fr 1fr;
    }
}

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

    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }

    .hero h1 {
        font-size: 2.5rem;
    }

    .hero-tagline {
        font-size: 1.25rem;
    }

    .nav-menu {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: white;
        flex-direction: column;
        padding: var(--spacing-xl);
        gap: var(--spacing-md);
        box-shadow: var(--shadow-lg);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .nav-toggle {
        display: flex;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: rotate(45deg) translate(5px, 5px);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: rotate(-45deg) translate(5px, -5px);
    }

    .impact-stats {
        grid-template-columns: repeat(2, 1fr);
    }

    .stat-number {
        font-size: 1.45rem;
    }

    .quote-section blockquote p {
        font-size: 1.5rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-links ul,
    .footer-contact {
        text-align: center;
    }
}

@media (max-width: 480px) {
    .impact-stats {
        grid-template-columns: 1fr;
    }

    .cta-buttons {
        flex-direction: column;
    }

    .cta-buttons .btn {
        width: 100%;
    }
}