:root {
    /* Natural, grounded, elegant palette */
    --color-bg: #FFFDF9; /* Very soft, warm off-white */
    --color-surface: #FFFFFF; /* Pure white for cards */
    --color-text: #1C1917; /* Very dark warm gray (Stone 900) */
    --color-text-light: #57534E; /* Lighter gray (Stone 600) */
    
    --color-primary: #A7D7C5; /* Soft pastel green */
    --color-primary-hover: #8FBFAD;
    
    --color-secondary: #E7E5E4; /* Neutral light gray */
    --color-secondary-hover: #D6D3D1;
    
    --color-featured-bg: var(--color-primary); /* Pastel bg for featured sections */
    --color-featured-surface: rgba(255, 255, 255, 0.6); /* Translucent white for sub-cards */
    
    --border-radius: 12px;
    --border-radius-sm: 8px;
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.05), 0 1px 2px rgba(0,0,0,0.03);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.05), 0 2px 4px -1px rgba(0,0,0,0.03);
    --transition: all 0.2s ease-in-out;
}

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

html {
    overflow-y: scroll;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4 {
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 1rem;
    color: var(--color-text);
    letter-spacing: -0.01em;
}

h1 {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    letter-spacing: -0.03em;
    font-weight: 800;
}

h2 { font-size: clamp(2rem, 4vw, 2.5rem); }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.125rem; font-weight: 600; }

p {
    margin-bottom: 1rem;
    font-size: 1.125rem;
}

.subtitle {
    font-size: 1.25rem;
    color: var(--color-text-light);
    margin-bottom: 2rem;
    line-height: 1.5;
}

ul {
    margin-left: 1.5rem;
    margin-bottom: 1rem;
}

ul li {
    margin-bottom: 0.5rem;
}

/* Layout utilities */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

.main-content {
    flex-grow: 1;
    padding-top: 3rem;
    padding-bottom: 5rem;
}

.text-content-narrow {
    max-width: 800px;
    margin: 0 auto;
}

.mt-4 {
    margin-top: 2rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.75rem 1.5rem;
    border-radius: var(--border-radius-sm);
    font-weight: 600;
    text-decoration: none;
    transition: var(--transition);
    cursor: pointer;
    border: none;
    font-size: 1rem;
    line-height: 1;
    white-space: nowrap;
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

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

.btn-primary:hover {
    background-color: var(--color-primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: var(--color-secondary);
    color: var(--color-text);
}

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

/* Header & Nav */
.header {
    background-color: var(--color-bg);
    position: sticky;
    top: 0;
    z-index: 100;
    border-bottom: 1px solid var(--color-secondary);
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 800;
    color: var(--color-text);
    letter-spacing: -0.02em;
    text-decoration: none;
    z-index: 101; /* Above mobile menu */
}

/* Burger Menu Toggle */
.menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 21px;
    background: transparent;
    border: none;
    cursor: pointer;
    z-index: 101; /* Keep above mobile menu */
}

.menu-toggle span {
    width: 100%;
    height: 3px;
    background-color: var(--color-text);
    border-radius: 10px;
    transition: var(--transition);
}

.nav {
    display: flex;
    gap: 1.5rem;
}

.nav-btn {
    background: transparent;
    border: none;
    padding: 0.5rem 0;
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text-light);
    cursor: pointer;
    transition: var(--transition);
    font-family: inherit;
    text-decoration: none;
    position: relative;
}

.nav-btn::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-primary);
    transition: width 0.3s ease;
}

.nav-btn:hover {
    color: var(--color-text);
}

.nav-btn:hover::after {
    width: 100%;
    background-color: var(--color-secondary-hover);
}

.nav-btn.active {
    color: var(--color-text);
}

.nav-btn.active::after {
    width: 100%;
    background-color: var(--color-primary);
}

/* Tabs */
.tab-content {
    display: none;
    animation: fadeIn 0.3s ease-out forwards;
}

.tab-content.active {
    display: block;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(5px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Sections */
.hero {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 4rem;
    align-items: center;
    margin-bottom: 5rem;
    margin-top: 2rem;
}

.hero:not(:has(.hero-image)) {
    grid-template-columns: 1fr;
    max-width: 800px;
}

.cta-group {
    display: flex;
    gap: 1rem;
    margin-top: 2.5rem;
}

.rounded-img {
    width: 100%;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
    object-fit: cover;
}

.hero-image img {
    aspect-ratio: 4/3;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
}

.feature-card {
    background-color: var(--color-surface);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-secondary);
}

.two-cols {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.two-cols.reverse .col-image {
    order: 2;
}

.two-cols.reverse .col-text {
    order: 1;
}

.section-divider {
    border: none;
    border-top: 1px solid var(--color-secondary);
    margin: 3rem 0;
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    margin-top: 1.5rem;
}

.team-card {
    background-color: var(--color-surface);
    padding: 1.5rem;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--color-secondary);
    box-shadow: var(--shadow-sm);
}

.team-card h4 {
    margin-bottom: 0.25rem;
    font-size: 1.125rem;
}

.team-role {
    font-weight: 600;
    color: var(--color-text);
    font-size: 0.95rem;
    margin-bottom: 0.15rem;
}

.team-job {
    color: var(--color-text-light);
    font-size: 0.875rem;
    margin-bottom: 0;
}

/* Footer */
.footer {
    padding: 3rem 2rem;
    color: var(--color-text-light);
    font-size: 0.875rem;
    border-top: 1px solid var(--color-secondary);
    margin-top: 4rem;
}

.footer p {
    margin-bottom: 0;
}

.footer .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
}

/* Calendar / Events */
.calendar-header {
    text-align: center;
    margin-bottom: 3rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.next-event-container {
    margin-bottom: 5rem;
}

/* Natural looking featured card - Solid pastel background */
.event-card-featured {
    background-color: var(--color-featured-bg);
    color: var(--color-text);
    padding: 3rem;
    border-radius: var(--border-radius);
    position: relative;
    box-shadow: var(--shadow-md);
}

.event-card-featured h3 {
    font-size: 2rem;
    margin-bottom: 0.75rem;
    color: var(--color-text);
}

.event-card-featured .event-date {
    font-weight: 600;
    font-size: 1rem;
    margin-bottom: 1.5rem;
    color: rgba(28, 25, 23, 0.7);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.event-card-featured .event-desc {
    font-size: 1.125rem;
    margin-bottom: 2rem;
    max-width: 80%;
    color: rgba(28, 25, 23, 0.9);
}

.event-card-featured .badge {
    position: absolute;
    top: 2rem;
    right: 2rem;
    background: var(--color-surface);
    color: var(--color-text);
    padding: 0.4rem 1rem;
    border-radius: 50px;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Talks Grid */
.talks-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
    margin-top: 2rem;
    border-top: 1px solid rgba(255,255,255,0.1);
    padding-top: 2rem;
}

.talk-card {
    background: var(--color-featured-surface);
    border-radius: var(--border-radius-sm);
    padding: 1.5rem;
    color: var(--color-text);
}

.talk-card h4 {
    margin-bottom: 0.5rem;
    font-size: 1.125rem;
    color: var(--color-text);
}

.talk-speakers {
    font-weight: 500;
    font-size: 0.875rem;
    margin-bottom: 0.75rem;
    color: rgba(28, 25, 23, 0.7);
}

.talk-abstract {
    font-size: 0.95rem;
    margin-bottom: 0;
    color: rgba(28, 25, 23, 0.9);
}

.past-events-section h3 {
    margin-bottom: 1.5rem;
    border-bottom: 1px solid var(--color-secondary);
    padding-bottom: 0.5rem;
}

.past-events-list {
    display: grid;
    gap: 1rem;
    margin-bottom: 2rem;
}

.event-card-small {
    background-color: var(--color-surface);
    padding: 1.5rem;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--color-secondary);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: var(--transition);
}

.event-card-small:hover {
    border-color: #D6D3D1;
    background-color: #FAFAFA;
}

.event-card-small .event-info h4 {
    margin-bottom: 0.25rem;
}

.event-card-small .event-info .event-date {
    color: var(--color-text-light);
    font-size: 0.875rem;
}

/* Pagination */
.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1.5rem;
    margin-top: 3rem;
}

.btn-page {
    background-color: var(--color-surface);
    border: 1px solid var(--color-secondary);
    color: var(--color-text);
    padding: 0.5rem 1rem;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    font-weight: 500;
    transition: var(--transition);
}

.btn-page:not(:disabled):hover {
    background-color: var(--color-secondary);
}

.btn-page:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

#page-info {
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--color-text-light);
}

/* Sponsors */
.sponsors-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-bottom: 5rem;
}

.sponsor-card {
    background-color: var(--color-surface);
    padding: 2rem;
    border-radius: var(--border-radius);
    border: 1px solid var(--color-secondary);
    text-align: center;
}

.sponsor-logo {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius-sm);
    margin-bottom: 1.5rem;
}

.become-sponsor {
    text-align: center;
    background-color: var(--color-secondary);
    padding: 4rem 2rem;
    border-radius: var(--border-radius);
    border: none;
}

.become-sponsor h3 {
    margin-bottom: 1rem;
    font-size: 1.75rem;
}

.become-sponsor p {
    margin-bottom: 2rem;
    color: var(--color-text-light);
}

/* Responsive */
@media (max-width: 768px) {
    .hero, .two-cols {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .hero {
        margin-top: 0;
    }
    
    .talks-grid {
        grid-template-columns: 1fr;
    }
    
    .two-cols.reverse .col-image,
    .two-cols.reverse .col-text {
        order: initial;
    }
    
    .cta-group {
        flex-direction: column;
    }
    
    /* Burger menu visibility */
    .menu-toggle {
        display: flex;
    }
    
    /* Mobile nav overlay */
    .nav {
        position: fixed;
        top: 0;
        right: -100%; /* Hidden by default */
        width: 100%;
        height: 100vh;
        background-color: var(--color-bg);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 2rem;
        transition: right 0.3s cubic-bezier(0.77, 0, 0.175, 1);
        z-index: 100;
    }
    
    .nav.open {
        right: 0;
    }
    
    /* Animated Burger to X */
    .menu-toggle.open span:nth-child(1) {
        transform: translateY(9px) rotate(45deg);
    }
    .menu-toggle.open span:nth-child(2) {
        opacity: 0;
    }
    .menu-toggle.open span:nth-child(3) {
        transform: translateY(-9px) rotate(-45deg);
    }
    
    .nav-btn {
        padding: 0.25rem 0;
        font-size: 0.95rem;
    }
    
    .event-card-featured {
        padding: 2rem;
    }
    
    .event-card-featured h3 {
        font-size: 1.5rem;
    }
    
    .event-card-featured .badge {
        position: relative;
        top: 0;
        right: 0;
        display: inline-block;
        margin-bottom: 1rem;
    }
    
    .event-card-small {
        flex-direction: column;
        align-items: flex-start;
        gap: 1rem;
    }
}



.link-highlight {
    color: var(--color-text);
    font-weight: 600;
    text-decoration: underline;
}

.text-center {
    text-align: center;
}

/* Footer Links */
.footer-links {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap;
}

@media (max-width: 768px) {
    .footer .container {
        flex-direction: column;
        text-align: center;
        gap: 0.75rem;
    }
    .footer-links {
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
    }
    .footer-links span {
        display: none;
    }
}

.footer-link {
    color: var(--color-text-light);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
}

.footer-link:hover {
    color: var(--color-text);
    text-decoration: underline;
}

/* Legal & Code of Conduct pages */
.legal-page h1 {
    font-size: clamp(2rem, 4vw, 2.75rem);
    margin-bottom: 1.5rem;
}

.legal-page h2 {
    font-size: 1.5rem;
    margin-top: 2.5rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--color-secondary);
    padding-bottom: 0.5rem;
}

.legal-page h3 {
    font-size: 1.2rem;
    margin-top: 1.5rem;
    margin-bottom: 0.75rem;
}

.legal-page p, .legal-page ul {
    margin-bottom: 1.25rem;
    color: var(--color-text-light);
}

.legal-page strong {
    color: var(--color-text);
}

/* ==========================================================================
   Mobilizon Alternative Frontend & RSVP Styles
   ========================================================================== */

.event-details-layout {
    display: flex;
    flex-direction: column;
    gap: 2.5rem;
}

.event-header-card {
    background-color: var(--color-surface);
    border-radius: var(--border-radius);
    padding: 2.5rem;
    box-shadow: var(--shadow-sm);
    border: 1px solid var(--color-secondary);
}

.event-header-top {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1.25rem;
    flex-wrap: wrap;
}

.badge-status {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.4rem 0.9rem;
    border-radius: 50px;
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.badge-status.upcoming {
    background-color: var(--color-primary);
    color: var(--color-text);
}

.badge-status.full {
    background-color: #FED7AA;
    color: #9A3412;
}

.badge-status.past {
    background-color: var(--color-secondary);
    color: var(--color-text-light);
}

.event-meta-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: 1.5rem;
    background-color: var(--color-bg);
    padding: 1.5rem;
    border-radius: var(--border-radius-sm);
    margin: 1.5rem 0;
    border: 1px solid rgba(0, 0, 0, 0.04);
}

.meta-item {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.meta-label {
    font-size: 0.8rem;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.05em;
    color: var(--color-text-light);
}

.meta-value {
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
}

.meta-value a {
    color: var(--color-text);
    text-decoration: underline;
    font-weight: 600;
}

.meta-value a:hover {
    color: #000;
}

/* RSVP / Inscription Card */
.mobilizon-rsvp-card {
    background-color: var(--color-surface);
    border-radius: var(--border-radius);
    padding: 2.5rem;
    border: 2px solid var(--color-primary);
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
}

.rsvp-header {
    margin-bottom: 1.5rem;
}

.rsvp-header h3 {
    margin-bottom: 0.5rem;
    font-size: 1.6rem;
}

.rsvp-header p {
    color: var(--color-text-light);
    margin-bottom: 0;
    font-size: 1rem;
}

/* Capacity gauge */
.capacity-container {
    margin: 1.5rem 0 2rem 0;
    background-color: var(--color-bg);
    padding: 1.25rem;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--color-secondary);
}

.capacity-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-weight: 600;
    font-size: 0.95rem;
    margin-bottom: 0.5rem;
}

.capacity-bar-bg {
    width: 100%;
    height: 10px;
    background-color: var(--color-secondary);
    border-radius: 10px;
    overflow: hidden;
}

.capacity-bar-fill {
    height: 100%;
    background-color: var(--color-primary-hover);
    border-radius: 10px;
    transition: width 0.6s ease-in-out;
}

/* Form Styles */
.rsvp-form {
    display: flex;
    flex-direction: column;
    gap: 1.25rem;
}

.form-grid-2 {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

@media (max-width: 600px) {
    .form-grid-2 {
        grid-template-columns: 1fr;
    }
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.form-group label {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--color-text);
}

.form-group input,
.form-group textarea {
    padding: 0.85rem 1rem;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--color-secondary-hover);
    font-family: inherit;
    font-size: 1rem;
    color: var(--color-text);
    background-color: var(--color-surface);
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--color-primary-hover);
    box-shadow: 0 0 0 3px rgba(167, 215, 197, 0.35);
}

.form-hint {
    font-size: 0.85rem;
    color: var(--color-text-light);
    margin-top: 0.25rem;
    margin-bottom: 0;
}

.form-actions {
    margin-top: 0.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.btn-rsvp {
    width: 100%;
    padding: 1rem 1.5rem;
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.btn-rsvp:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none !important;
}

/* Alerts & Feedbacks */
.alert-box {
    padding: 1.25rem 1.5rem;
    border-radius: var(--border-radius-sm);
    margin: 1.5rem 0;
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    line-height: 1.5;
}

.alert-success {
    background-color: #ECFDF5;
    border: 1px solid #A7F3D0;
    color: #065F46;
}

.alert-error {
    background-color: #FEF2F2;
    border: 1px solid #FECACA;
    color: #991B1B;
}

.alert-info {
    background-color: #EFF6FF;
    border: 1px solid #BFDBFE;
    color: #1E40AF;
}

.alert-warning {
    background-color: #FFFBEB;
    border: 1px solid #FDE68A;
    color: #92400E;
}

.alert-box h4 {
    margin-bottom: 0.25rem;
    color: inherit;
}

.alert-box p {
    margin-bottom: 0;
    font-size: 0.95rem;
    color: inherit;
}

/* Calendar & Share Toolbar */
.event-actions-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    margin: 2rem 0;
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-secondary);
}

.event-content-section {
    background-color: var(--color-surface);
    border-radius: var(--border-radius);
    padding: 2.5rem;
    border: 1px solid var(--color-secondary);
    box-shadow: var(--shadow-sm);
}

.event-content-section h3 {
    margin-bottom: 1rem;
}

.event-rich-description {
    line-height: 1.7;
    color: var(--color-text);
}

.event-rich-description p {
    margin-bottom: 1.25rem;
}

.event-rich-description a {
    color: var(--color-text);
    font-weight: 600;
    text-decoration: underline;
}

.event-rich-description img {
    max-width: 100%;
    height: auto;
    border-radius: var(--border-radius-sm);
    margin: 1.5rem 0;
}

/* Loading Skeletons */
.skeleton {
    background: linear-gradient(90deg, #f0eee9 25%, #f7f5f0 50%, #f0eee9 75%);
    background-size: 200% 100%;
    animation: skeleton-loading 1.5s infinite;
    border-radius: var(--border-radius-sm);
}

@keyframes skeleton-loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

.skeleton-title {
    height: 3rem;
    width: 75%;
    margin-bottom: 1.5rem;
}

.skeleton-text {
    height: 1.2rem;
    width: 100%;
    margin-bottom: 0.75rem;
}

.skeleton-card {
    height: 250px;
    width: 100%;
    margin-bottom: 2rem;
}

/* Spinner */
.spinner {
    width: 20px;
    height: 20px;
    border: 3px solid rgba(0, 0, 0, 0.15);
    border-top-color: var(--color-text);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
    display: inline-block;
}

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

@media (max-width: 768px) {
    .event-header-card,
    .mobilizon-rsvp-card,
    .event-content-section {
        padding: 1.75rem;
    }
    
    .event-actions-bar {
        flex-direction: column;
    }
    
    .event-actions-bar .btn {
        width: 100%;
    }
}