/* ====================================
   CSS Variables
   ==================================== */
:root {
    /* Color Scheme */
    --color-primary: #333333;
    --color-primary-light: #555555;
    --color-primary-dark: #1a1a1a;
    --color-secondary: #e0e0e0;
    --color-secondary-light: #f5f5f5;
    --color-secondary-dark: #cccccc;
    --color-accent: #4a90e2;
    --color-accent-light: #6ba5e9;
    --color-accent-dark: #3a73b6;
    --color-success: #2ecc71;
    --color-warning: #f39c12;
    --color-danger: #e74c3c;
    --color-info: #3498db;
    
    /* Typography */
    --font-heading: 'Playfair Display', serif;
    --font-body: 'Source Sans Pro', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
    
    /* Borders */
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px;
    
    /* Shadows */
    --shadow-small: 0 2px 4px rgba(0, 0, 0, 0.1);
    --shadow-medium: 0 4px 8px rgba(0, 0, 0, 0.12);
    --shadow-large: 0 8px 16px rgba(0, 0, 0, 0.16);
    
    /* Transitions */
    --transition-fast: 0.3s ease;
    --transition-medium: 0.5s ease;
    --transition-slow: 0.8s ease;
    
    /* Container */
    --container-max-width: 1200px;
    --container-padding: 1.5rem;
    
    /* Z-indexes */
    --z-back: -1;
    --z-normal: 1;
    --z-tooltip: 10;
    --z-fixed: 100;
    --z-modal: 1000;
}

/* ====================================
   Reset & Base Styles
   ==================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--color-primary);
    background-color: var(--color-secondary-light);
    overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary-dark);
}

h1 {
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

h2 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
}

h3 {
    font-size: 1.75rem;
}

h4 {
    font-size: 1.5rem;
}

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

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

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

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

ul {
    list-style: none;
}

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

.section {
    padding: var(--spacing-xl) 0;
    position: relative;
}

.section-title {
    text-align: center;
    margin-bottom: var(--spacing-lg);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 3px;
    background-color: var(--color-accent);
    margin: var(--spacing-sm) auto 0;
}

/* ====================================
   Buttons
   ==================================== */
.btn,
button,
input[type='submit'] {
    display: inline-block;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 1rem;
    padding: 0.75rem 1.5rem;
    background-color: var(--color-accent);
    color: white;
    border: none;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-align: center;
    box-shadow: var(--shadow-small);
}

.btn:hover,
button:hover,
input[type='submit']:hover {
    background-color: var(--color-accent-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-medium);
}

.btn:active,
button:active,
input[type='submit']:active {
    transform: translateY(0);
    box-shadow: var(--shadow-small);
}

.btn.submit-btn {
    width: 100%;
    margin-top: var(--spacing-sm);
}

/* ====================================
   Header & Navigation
   ==================================== */
.header {
    background-color: var(--color-primary-dark);
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: var(--z-fixed);
    box-shadow: var(--shadow-medium);
}

.navbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 0;
}

.logo a {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: white;
    text-decoration: none;
}

.nav-links ul {
    display: flex;
    gap: var(--spacing-md);
}

.nav-links a {
    color: white;
    font-weight: 600;
    position: relative;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-fast);
}

.nav-links a:hover::after {
    width: 100%;
}

.burger-menu {
    display: none;
    cursor: pointer;
}

.burger-menu div {
    width: 25px;
    height: 3px;
    background-color: white;
    margin: 5px;
    transition: all var(--transition-fast);
}

/* ====================================
   Hero Section
   ==================================== */
.hero {
    position: relative;
    padding: 0;
    margin-top: 0;
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    color: white;
}

.hero .overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(rgba(0, 0, 0, 0.6), rgba(0, 0, 0, 0.4));
    z-index: var(--z-back);
}

.hero-content {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: calc(80px + var(--spacing-xl)) 0 var(--spacing-xl);
    min-height: 80vh;
    z-index: var(--z-normal);
    position: relative;
}

.hero-content h1 {
    color: white;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
    margin-bottom: var(--spacing-md);
    max-width: 800px;
}

.hero-content p {
    color: white;
    font-size: 1.25rem;
    margin-bottom: var(--spacing-lg);
    max-width: 600px;
    text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

/* ====================================
   Methodology Section
   ==================================== */
.methodology {
    background-color: white;
}

.methodology-content {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    align-items: center;
}

.methodology-text {
    flex: 1;
    min-width: 300px;
}

.methodology-image {
    flex: 1;
    min-width: 300px;
    text-align: center;
}

.methodology-image img {
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-medium);
}

/* ====================================
   History Section
   ==================================== */
.history {
    background-color: var(--color-secondary-light);
}

.history-timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
    padding: var(--spacing-md) 0;
}

.history-timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: calc(50px / 2);
    width: 4px;
    height: 100%;
    background-color: var(--color-accent);
    transform: translateX(-50%);
}

.timeline-item {
    position: relative;
    padding-left: 70px;
    margin-bottom: var(--spacing-lg);
}

.timeline-date {
    position: absolute;
    left: 0;
    top: 0;
    width: 50px;
    height: 50px;
    background-color: var(--color-accent);
    color: white;
    border-radius: 50%;
    display: flex;
    justify-content: center;
    align-items: center;
    font-weight: bold;
    box-shadow: var(--shadow-small);
    font-size: 0.9rem;
    text-align: center;
    z-index: 1;
}

.timeline-content {
    background-color: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-medium);
}

.timeline-content h3 {
    color: var(--color-primary-dark);
    margin-bottom: var(--spacing-sm);
}

.history-image {
    margin-top: var(--spacing-lg);
    text-align: center;
}

.history-image img {
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-medium);
    max-width: 100%;
}

/* ====================================
   Impact Carousel Section
   ==================================== */
.impact {
    background-color: white;
}

.carousel-container {
    position: relative;
    overflow: hidden;
    padding: var(--spacing-md) 0;
}

.carousel {
    display: flex;
    transition: transform var(--transition-medium);
    gap: var(--spacing-md);
}

.carousel-item {
    min-width: 100%;
    flex: 1 0 100%;
    transition: opacity var(--transition-fast);
}

.card {
    background-color: var(--color-secondary-light);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.card-image {
    width: 100%;
    height: 250px;
    overflow: hidden;
    text-align: center;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-medium);
}

.card:hover .card-image img {
    transform: scale(1.05);
}

.card-content {
    padding: var(--spacing-md);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.card-content h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary-dark);
}

.carousel-controls {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.prev-btn, .next-btn {
    padding: 0.5rem 1rem;
    background-color: var(--color-accent);
    color: white;
    border: none;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: background-color var(--transition-fast);
}

.prev-btn:hover, .next-btn:hover {
    background-color: var(--color-accent-dark);
}

/* ====================================
   Resources Section
   ==================================== */
.resources {
    background-color: var(--color-secondary-light);
}

.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
}

.resource-card {
    background-color: white;
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-medium);
    display: flex;
    flex-direction: column;
    height: 100%;
}

.resource-card h3 {
    margin-bottom: var(--spacing-sm);
    color: var(--color-primary-dark);
}

.resource-card p {
    flex-grow: 1;
    margin-bottom: var(--spacing-md);
}

.resource-card a {
    font-weight: 600;
    position: relative;
    display: inline-block;
}

.resource-card a::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-accent);
    transition: width var(--transition-fast);
}

.resource-card a:hover::after {
    width: 100%;
}

/* ====================================
   Events Section
   ==================================== */
.events {
    background-color: white;
}

.events-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.event-card {
    background-color: var(--color-secondary-light);
    border-radius: var(--border-radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-medium);
    display: flex;
    flex-direction: column;
    align-items: center;
    height: 100%;
}

.event-card .card-image {
    width: 100%;
    height: 200px;
    overflow: hidden;
}

.event-card .card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-medium);
}

.event-card:hover .card-image img {
    transform: scale(1.05);
}

.event-card .card-content {
    padding: var(--spacing-md);
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    width: 100%;
}

.event-date {
    color: var(--color-accent-dark);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.event-card .btn {
    align-self: flex-start;
    margin-top: auto;
}

/* ====================================
   Events Calendar Section
   ==================================== */
.events-calendar {
    background-color: var(--color-secondary-light);
}

.calendar-container {
    background-color: white;
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-medium);
    overflow: hidden;
}

.calendar-header {
    background-color: var(--color-accent);
    color: white;
    padding: var(--spacing-sm);
    text-align: center;
}

.calendar-header h3 {
    margin: 0;
    color: white;
}

.calendar-grid {
    padding: var(--spacing-md);
}

.calendar-day {
    display: grid;
    grid-template-columns: repeat(7, 1fr);
    gap: 5px;
}

.day-header {
    text-align: center;
    font-weight: 600;
    padding: var(--spacing-xs);
    border-bottom: 2px solid var(--color-secondary);
}

.day-cell {
    height: 40px;
    border-radius: var(--border-radius-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: relative;
    background-color: var(--color-secondary-light);
}

.day-cell.empty {
    background-color: transparent;
}

.event-day {
    background-color: var(--color-accent-light);
    color: white;
    font-weight: 600;
    position: relative;
    cursor: pointer;
}

.event-indicator {
    position: absolute;
    bottom: 2px;
    font-size: 0.7rem;
    font-weight: normal;
}

.calendar-legend {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    padding: var(--spacing-sm);
    border-top: 1px solid var(--color-secondary);
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 5px;
}

.legend-color {
    width: 15px;
    height: 15px;
    border-radius: 50%;
    display: inline-block;
}

.legend-color.workshop {
    background-color: var(--color-accent);
}

.legend-color.webinar {
    background-color: var(--color-info);
}

.legend-color.forum {
    background-color: var(--color-warning);
}

/* ====================================
   Contact Section
   ==================================== */
.contact {
    background-color: white;
}

.contact-container {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
}

.contact-info, .contact-form {
    flex: 1;
    min-width: 300px;
}

.contact-info h3 {
    margin-bottom: var(--spacing-md);
}

.info-item {
    margin-bottom: var(--spacing-sm);
}

.info-label {
    font-weight: 600;
    color: var(--color-primary-dark);
    margin-right: var(--spacing-xs);
}

.contact-form form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.form-group label {
    font-weight: 600;
    color: var(--color-primary-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 0.75rem;
    border: 1px solid var(--color-secondary-dark);
    border-radius: var(--border-radius-sm);
    font-family: var(--font-body);
    transition: border-color var(--transition-fast);
}

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

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

.footer-content {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

.footer-logo, .footer-links, .footer-resources, .footer-social {
    flex: 1;
    min-width: 200px;
}

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

.footer-logo p {
    color: var(--color-secondary);
}

.footer h4 {
    color: white;
    margin-bottom: var(--spacing-sm);
    position: relative;
}

.footer h4::after {
    content: '';
    display: block;
    width: 40px;
    height: 2px;
    background-color: var(--color-accent);
    margin-top: 5px;
}

.footer ul {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer a {
    color: var(--color-secondary);
    transition: color var(--transition-fast);
}

.footer a:hover {
    color: white;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-sm);
    text-align: center;
    color: var(--color-secondary);
    font-size: 0.9rem;
}

.footer-social a {
    display: inline-flex;
    align-items: center;
    transition: transform var(--transition-fast);
}

.footer-social a:hover {
    transform: translateX(5px);
}

/* ====================================
   Success Page
   ==================================== */
.success-page {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: var(--spacing-md);
}

.success-content {
    max-width: 600px;
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-large);
}

.success-icon {
    color: var(--color-success);
    font-size: 3rem;
    margin-bottom: var(--spacing-md);
}

/* ====================================
   Privacy & Terms Pages
   ==================================== */
.privacy-page, .terms-page {
    padding-top: 100px;
    min-height: 100vh;
}

.privacy-content, .terms-content {
    background-color: white;
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    box-shadow: var(--shadow-medium);
}

/* ====================================
   Animations
   ==================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes pulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
    100% {
        transform: scale(1);
    }
}

/* AOS (Animate On Scroll) custom animations */
[data-aos="custom-fade-up"] {
    opacity: 0;
    transform: translateY(30px);
    transition: transform 0.8s cubic-bezier(0.165, 0.84, 0.44, 1), opacity 0.8s cubic-bezier(0.165, 0.84, 0.44, 1);
}

[data-aos="custom-fade-up"].aos-animate {
    opacity: 1;
    transform: translateY(0);
}

/* Particle Animation */
.particles-js {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: var(--z-back);
    pointer-events: none;
}

/* ====================================
   Media Queries
   ==================================== */
@media screen and (max-width: 992px) {
    html {
        font-size: 15px;
    }
    
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .section {
        padding: var(--spacing-lg) 0;
    }
    
    .history-timeline::before {
        left: 25px;
    }
    
    .timeline-item {
        padding-left: 60px;
    }
    
    .timeline-date {
        width: 40px;
        height: 40px;
        font-size: 0.8rem;
    }
}

@media screen and (max-width: 768px) {
    html {
        font-size: 14px;
    }
    
    h1 {
        font-size: 2.5rem;
    }
    
    h2 {
        font-size: 2rem;
    }
    
    .nav-links {
        position: fixed;
        top: 70px;
        right: -100%;
        width: 80%;
        height: calc(100vh - 70px);
        background-color: var(--color-primary-dark);
        transition: right var(--transition-medium);
        padding: var(--spacing-md);
        z-index: var(--z-fixed);
    }
    
    .nav-links.active {
        right: 0;
    }
    
    .nav-links ul {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .burger-menu {
        display: block;
    }
    
    .methodology-content,
    .contact-container {
        flex-direction: column;
    }
    
    .methodology-image {
        margin-top: var(--spacing-md);
    }
    
    .events-grid {
        grid-template-columns: 1fr;
    }
}

@media screen and (max-width: 576px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .section {
        padding: var(--spacing-md) 0;
    }
    
    .section-title {
        margin-bottom: var(--spacing-md);
    }
    
    .calendar-day {
        grid-template-columns: repeat(7, 1fr);
        font-size: 0.8rem;
    }
    
    .day-cell {
        height: 35px;
    }
    
    .event-indicator {
        font-size: 0.6rem;
    }
    
    .footer-content {
        flex-direction: column;
        gap: var(--spacing-md);
    }
}

/* ====================================
   Utilities
   ==================================== */
.text-center {
    text-align: center;
}

.mb-sm {
    margin-bottom: var(--spacing-sm);
}

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

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

.mt-sm {
    margin-top: var(--spacing-sm);
}

.mt-md {
    margin-top: var(--spacing-md);
}

.mt-lg {
    margin-top: var(--spacing-lg);
}

html,body{
    overflow-x: hidden;
}