/* ===================================
   Level Executive Summit 2026
   Brand-Aligned Landing Page
   =================================== */

:root {
    /* Level Brand Colors - Primary */
    --color-black: #000000;
    --color-white: #FFFFFF;
    --color-gray: #D9DEF0;

    /* Level Brand Colors - Secondary (Accent Only) */
    --color-blue: #86D5F4;
    --color-pink: #FD6EF8;
    --color-green: #8EE34D;
    --color-orange: #FFAA53;

    /* Extended Palette */
    --color-gray-50: #fafafa;
    --color-gray-100: #f4f4f5;
    --color-gray-200: #e4e4e7;
    --color-gray-300: #d4d4d8;
    --color-gray-400: #a1a1aa;
    --color-gray-500: #71717a;
    --color-gray-600: #52525b;
    --color-gray-700: #3f3f46;
    --color-gray-800: #27272a;
    --color-gray-900: #18181b;

    /* Typography - Level Brand */
    --font-headlines: 'Inter Tight', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-body: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;

    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-2xl: 4rem;
    --spacing-3xl: 6rem;
    --spacing-4xl: 8rem;

    --max-width: 1200px;
    --max-width-narrow: 800px;
}

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

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

body {
    margin: 0;
    padding: 0;
    font-family: var(--font-body);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--color-black);
    background-color: var(--color-white);
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    overflow-x: hidden;
}

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    margin: 0 0 var(--spacing-md);
    font-family: var(--font-headlines);
    font-weight: 700;
    line-height: 1.1;
    letter-spacing: -0.02em;
}

h1 { font-size: clamp(3rem, 8vw, 5.5rem); font-weight: 900; }
h2 { font-size: clamp(2rem, 5vw, 3.5rem); font-weight: 700; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.125rem; font-weight: 600; }

p {
    margin: 0 0 var(--spacing-md);
}

.lead {
    font-size: 1.25rem;
    line-height: 1.7;
    color: var(--color-gray-600);
}

.section-label {
    display: inline-block;
    font-family: var(--font-headlines);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-gray-500);
    margin-bottom: var(--spacing-sm);
}

.section-intro {
    font-size: 1.25rem;
    color: var(--color-gray-600);
    max-width: 600px;
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--color-black);
    color: var(--color-white);
    text-align: center;
    padding: var(--spacing-xl) var(--spacing-lg);
    position: relative;
    overflow: hidden;
}

.hero-bg {
    position: absolute;
    inset: 0;
}

.hero-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    opacity: 0.4;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(180deg, rgba(0,0,0,0.3) 0%, rgba(0,0,0,0.7) 100%);
}

.nav {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    padding: var(--spacing-lg) var(--spacing-xl);
    z-index: 10;
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-family: var(--font-headlines);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.3em;
}

.logo-img {
    height: 80px;
    width: auto;
    max-width: 200px;
    object-fit: contain;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 900px;
    padding-top: var(--spacing-3xl);
}

.hero-reason {
    font-family: var(--font-headlines);
    font-size: 1rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-gray);
    margin-top: var(--spacing-lg);
    opacity: 0.8;
}

.event-label {
    font-family: var(--font-headlines);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.3em;
    text-transform: uppercase;
    color: var(--color-gray);
    margin-bottom: var(--spacing-md);
}

.hero h1 {
    margin-bottom: var(--spacing-md);
}

.tagline {
    font-size: clamp(1.125rem, 2.5vw, 1.5rem);
    font-weight: 400;
    color: var(--color-gray);
    margin-bottom: var(--spacing-xl);
}

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

.btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 1rem 2rem;
    font-family: var(--font-headlines);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-decoration: none;
    text-transform: uppercase;
    border-radius: 0;
    transition: all 0.3s ease;
}

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

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

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

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

.hero-details {
    position: relative;
    z-index: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: var(--spacing-xl);
    flex-wrap: wrap;
    margin-top: var(--spacing-3xl);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.1);
}

.detail {
    display: flex;
    flex-direction: column;
    text-align: center;
}

.detail-value {
    font-family: var(--font-headlines);
    font-size: 1.125rem;
    font-weight: 700;
}

.detail-label {
    font-size: 0.6875rem;
    font-weight: 500;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-gray-400);
    margin-top: 4px;
}

.detail-divider {
    width: 1px;
    height: 40px;
    background: rgba(255, 255, 255, 0.2);
}

.detail-book-link {
    display: inline-block;
    padding: 0.75rem 1.25rem;
    font-family: var(--font-headlines);
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-decoration: none;
    background: var(--color-white);
    color: var(--color-black);
    transition: all 0.3s ease;
}

.detail-book-link:hover {
    background: var(--color-blue);
    transform: translateY(-2px);
}

.scroll-indicator {
    position: absolute;
    bottom: var(--spacing-xl);
    left: 50%;
    transform: translateX(-50%);
    color: var(--color-gray-400);
    animation: bounce 2s ease-in-out infinite;
}

@keyframes bounce {
    0%, 100% { transform: translateX(-50%) translateY(0); }
    50% { transform: translateX(-50%) translateY(8px); }
}

/* ===================================
   About Section
   =================================== */
.about {
    padding: var(--spacing-4xl) var(--spacing-lg);
    background: var(--color-white);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
    align-items: center;
}

.about-content h2 {
    margin-bottom: var(--spacing-lg);
}

.about-content p {
    color: var(--color-gray-600);
    font-size: 1.125rem;
}

.about-quote {
    position: relative;
}

.about-sticker {
    display: block;
    width: 200px;
    height: auto;
    margin: 0 auto var(--spacing-md);
    transform: rotate(-2deg);
    mix-blend-mode: multiply;
    transition: transform 0.3s ease;
}

.about-sticker:hover {
    transform: rotate(0deg) scale(1.05);
}

blockquote {
    margin: 0;
    padding: var(--spacing-xl);
    font-family: var(--font-headlines);
    font-size: 1.75rem;
    font-weight: 500;
    line-height: 1.4;
    color: var(--color-black);
    background: var(--color-gray);
    position: relative;
}

blockquote::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 6px;
    background: var(--color-black);
}

/* ===================================
   Video Welcome Section
   =================================== */
.video-welcome {
    padding: var(--spacing-3xl) var(--spacing-lg);
    background: var(--color-gray-100);
    text-align: center;
}

.video-welcome h2 {
    margin-bottom: var(--spacing-md);
}

.video-intro {
    max-width: 720px;
    margin: 0 auto var(--spacing-xl);
    color: var(--color-gray-600);
    font-size: 1.125rem;
    line-height: 1.7;
}

.video-wrapper {
    position: relative;
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    padding-bottom: 56.25%; /* 16:9 */
    height: 0;
    overflow: hidden;
    border-radius: 8px;
    box-shadow: 0 4px 24px rgba(0, 0, 0, 0.12);
}

.video-wrapper iframe {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

/* ===================================
   Expect Section
   =================================== */
.expect {
    padding: var(--spacing-4xl) var(--spacing-lg);
    background: var(--color-black);
    color: var(--color-white);
}

.expect h2 {
    margin-bottom: var(--spacing-sm);
}

.expect .section-intro {
    color: var(--color-gray-400);
    margin-bottom: var(--spacing-2xl);
}

.expect-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: var(--spacing-md);
}

.expect-card {
    padding: var(--spacing-xl);
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.4s ease;
    opacity: 0;
    transform: translateY(30px);
}

.expect-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.expect-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--accent, var(--color-white));
}

.card-number {
    font-family: var(--font-headlines);
    font-size: 4rem;
    font-weight: 900;
    color: var(--accent, var(--color-gray-700));
    line-height: 1;
    margin-bottom: var(--spacing-md);
    transition: color 0.4s ease;
}

.expect-card:hover .card-number {
    color: var(--accent, var(--color-white));
}

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

.expect-card p {
    margin: 0;
    font-size: 0.9375rem;
    color: var(--color-gray-400);
    line-height: 1.6;
}

/* ===================================
   Speakers Section
   =================================== */
.speakers {
    padding: var(--spacing-4xl) var(--spacing-lg);
    background: var(--color-white);
}

.speakers h2 {
    margin-bottom: var(--spacing-sm);
}

.speakers-disclaimer {
    color: var(--color-gray-500);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-2xl);
}

.speakers-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-lg);
}

.speaker-card {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--color-gray-50);
    border: 1px solid var(--color-gray-200);
    transition: all 0.3s ease;
    opacity: 0;
    transform: translateY(20px);
}

.speaker-card.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.speaker-card:hover {
    background: var(--color-white);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
    border-color: var(--color-gray-300);
}

.speaker-image {
    flex-shrink: 0;
}

.speaker-photo {
    width: 80px;
    height: 80px;
    object-fit: cover;
    object-position: center top;
}

.speaker-placeholder {
    width: 80px;
    height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-black);
    color: var(--color-white);
    font-family: var(--font-headlines);
    font-size: 1.25rem;
    font-weight: 700;
    letter-spacing: 0.05em;
}

.speaker-placeholder.more {
    background: var(--color-gray-300);
    color: var(--color-gray-600);
    font-size: 2rem;
}

.speaker-info h3 {
    font-size: 1.125rem;
    margin-bottom: 4px;
}

.speaker-title {
    font-size: 0.875rem;
    color: var(--color-gray-600);
    margin: 0 0 2px !important;
    line-height: 1.4;
}

.speaker-company {
    font-family: var(--font-headlines);
    font-size: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    color: var(--color-gray-500);
    margin: 0 !important;
}

.speaker-more {
    border-style: dashed;
    background: transparent;
}

.speaker-more:hover {
    background: var(--color-gray-50);
}

/* Duo Speaker Card (Pittsburgh Dad) */
.speaker-image-duo {
    position: relative;
    width: 90px;
    height: 80px;
    flex-shrink: 0;
}

.speaker-image-duo .duo-photo-1 {
    width: 56px;
    height: 56px;
    object-fit: cover;
    object-position: center top;
    position: absolute;
    top: 0;
    left: 0;
    z-index: 2;
    border: 2px solid var(--color-white);
}

.speaker-image-duo .duo-photo-2 {
    width: 56px;
    height: 56px;
    object-fit: cover;
    object-position: center top;
    position: absolute;
    bottom: 0;
    right: 0;
    z-index: 1;
    border: 2px solid var(--color-white);
}

.speaker-info a {
    color: var(--color-gray-600);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.speaker-info a:hover {
    color: var(--color-black);
}

/* ===================================
   Venues Section
   =================================== */
.venues-section {
    padding: var(--spacing-2xl) var(--spacing-lg) var(--spacing-lg);
    background: var(--color-white);
    text-align: center;
}

.venues-section h2 {
    margin-bottom: 0;
}

.venues {
    display: flex;
    overflow-x: auto;
    scroll-snap-type: x mandatory;
}

.venues .venue-card {
    flex: 0 0 20%;
    min-width: 280px;
    scroll-snap-align: start;
}

.venue-card {
    position: relative;
    min-height: 400px;
    overflow: hidden;
    opacity: 0;
    transform: scale(0.95);
    transition: all 0.6s ease;
}

.venue-card.animate-in {
    opacity: 1;
    transform: scale(1);
}

.venue-image {
    position: absolute;
    inset: 0;
}

.venue-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s ease;
}

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

.venue-content {
    position: absolute;
    inset: 0;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    padding: var(--spacing-lg);
    background: linear-gradient(180deg, transparent 0%, rgba(0,0,0,0.8) 100%);
    color: var(--color-white);
}

.venue-label {
    font-family: var(--font-headlines);
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.2em;
    text-transform: uppercase;
    color: var(--color-gray);
    margin-bottom: var(--spacing-xs);
}

.venue-content h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.venue-content p {
    font-size: 0.875rem;
    color: var(--color-gray-300);
    margin: 0;
    line-height: 1.5;
}

.venue-note {
    margin-top: var(--spacing-xs) !important;
    font-size: 0.8125rem !important;
    color: var(--color-gray-400) !important;
}

.venue-link {
    color: var(--color-white);
    text-decoration: underline;
    text-underline-offset: 2px;
}

.venue-link:hover {
    color: var(--color-blue);
}

.venue-book-btn {
    display: inline-block;
    margin-top: var(--spacing-sm);
    padding: 0.625rem 1.25rem;
    font-family: var(--font-headlines);
    font-size: 0.6875rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    text-decoration: none;
    background: var(--color-white);
    color: var(--color-black);
    transition: all 0.3s ease;
}

.venue-book-btn:hover {
    background: var(--color-blue);
    transform: translateY(-2px);
}

/* ===================================
   Agenda Section
   =================================== */
.agenda {
    padding: var(--spacing-4xl) var(--spacing-lg);
    background: var(--color-gray-50);
}

.agenda h2 {
    text-align: center;
    margin-bottom: var(--spacing-sm);
}

.agenda-disclaimer {
    text-align: center;
    color: var(--color-gray-500);
    font-size: 0.875rem;
    margin-bottom: var(--spacing-3xl);
}

.agenda .section-label {
    display: block;
    text-align: center;
}

.timeline {
    max-width: 900px;
    margin: 0 auto;
    position: relative;
}

.timeline-day {
    display: flex;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-xl);
    opacity: 0;
    transform: translateX(-30px);
    transition: all 0.6s ease;
}

.timeline-day.animate-in {
    opacity: 1;
    transform: translateX(0);
}

.day-marker {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-top: var(--spacing-lg);
}

.day-marker-dot {
    width: 16px;
    height: 16px;
    background: var(--color-black);
    border-radius: 50%;
    flex-shrink: 0;
}

.day-marker-line {
    width: 2px;
    flex: 1;
    background: var(--color-gray-300);
    margin-top: var(--spacing-sm);
}

.day-card {
    flex: 1;
    background: var(--color-white);
    box-shadow: 0 4px 20px rgba(0,0,0,0.08);
    overflow: hidden;
    transition: all 0.3s ease;
}

.day-card:hover {
    box-shadow: 0 8px 40px rgba(0,0,0,0.12);
}

.day-card.featured {
    box-shadow: 0 8px 30px rgba(0,0,0,0.12);
}

.day-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    padding: var(--spacing-lg) var(--spacing-xl);
    background: var(--color-black);
    color: var(--color-white);
}

.day-date {
    display: flex;
    flex-direction: column;
}

.day-weekday {
    font-family: var(--font-headlines);
    font-size: 0.6875rem;
    font-weight: 600;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    color: var(--color-gray);
}

.day-monthday {
    font-family: var(--font-headlines);
    font-size: 1.25rem;
    font-weight: 700;
}

.day-title {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 0;
    flex: 1;
}

.day-badge {
    padding: 6px 12px;
    font-family: var(--font-headlines);
    font-size: 0.625rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    background: var(--color-white);
    color: var(--color-black);
}

.day-events {
    padding: var(--spacing-md) 0;
}

.timeline-event {
    display: flex;
    gap: var(--spacing-lg);
    padding: var(--spacing-md) var(--spacing-xl);
    transition: all 0.2s ease;
}

.timeline-event:hover {
    background: var(--color-gray-100);
}

.timeline-event.highlight {
    background: var(--color-gray-100);
}

.timeline-event.keynote {
    background: linear-gradient(90deg, rgba(253, 110, 248, 0.1) 0%, var(--color-gray-100) 100%);
}

.timeline-event.optional {
    opacity: 0.7;
}

.event-time {
    min-width: 80px;
    font-family: var(--font-headlines);
    font-size: 0.8125rem;
    font-weight: 600;
    color: var(--color-gray-500);
    padding-top: 2px;
}

.event-content h4 {
    margin: 0 0 4px;
    font-weight: 600;
    font-size: 1rem;
}

.event-content p {
    margin: 0 0 var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--color-gray-600);
}

.event-tag {
    display: inline-block;
    padding: 3px 10px;
    font-family: var(--font-headlines);
    font-size: 0.5625rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-transform: uppercase;
    background: var(--color-gray-200);
    color: var(--color-gray-600);
}

.event-tag.tbd {
    background: transparent;
    color: var(--color-gray-400);
    border: 1px dashed var(--color-gray-300);
}

.event-tag.keynote-tag {
    background: var(--color-pink);
    color: var(--color-black);
}

.event-tag.highlight-tag {
    background: var(--color-black);
    color: var(--color-white);
}

.event-partner {
    display: inline-flex;
    align-items: center;
    vertical-align: middle;
    filter: grayscale(1) opacity(0.35);
    transition: filter 0.3s ease;
}

.timeline-event:hover .event-partner {
    filter: grayscale(0) opacity(0.85);
}

.event-partner-text {
    font-size: 0.65rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    color: var(--color-gray-500);
    border: 1px solid var(--color-gray-300);
    border-radius: 4px;
    padding: 2px 6px;
}

.event-partner img {
    height: 18px;
    width: auto;
    object-fit: contain;
}

.event-sponsor {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    margin-top: 6px;
    padding: 3px 8px;
    background: var(--color-gray-100);
    border-radius: 4px;
    font-size: 0.65rem;
    font-weight: 500;
    color: var(--color-gray-400);
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.event-sponsor img {
    height: 14px;
    width: auto;
    object-fit: contain;
    filter: grayscale(1) opacity(0.5);
    transition: filter 0.3s ease;
}

.timeline-event:hover .event-sponsor img {
    filter: grayscale(0) opacity(0.85);
}

/* ===================================
   Pittsburgh Section
   =================================== */
.pittsburgh {
    padding: var(--spacing-4xl) var(--spacing-lg);
    position: relative;
    overflow: hidden;
    min-height: 600px;
    display: flex;
    align-items: center;
}

.pgh-image {
    position: absolute;
    inset: 0;
}

.pgh-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.pgh-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(90deg, rgba(0,0,0,0.9) 0%, rgba(0,0,0,0.7) 50%, rgba(0,0,0,0.4) 100%);
}

.pgh-content {
    position: relative;
    z-index: 1;
    max-width: 600px;
    color: var(--color-white);
}

.pittsburgh .section-label {
    color: var(--color-gray);
}

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

.pittsburgh .lead {
    color: var(--color-gray-300);
    margin-bottom: var(--spacing-2xl);
}

.pgh-stats {
    display: flex;
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

.stat {
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.5s ease;
}

.stat.animate-in {
    opacity: 1;
    transform: translateY(0);
}

.stat:nth-child(2) { transition-delay: 0.1s; }
.stat:nth-child(3) { transition-delay: 0.2s; }

.stat-value {
    font-family: var(--font-headlines);
    font-size: 2.5rem;
    font-weight: 900;
    color: var(--color-white);
    line-height: 1;
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 0.8125rem;
    color: var(--color-gray-400);
}

.pgh-closing {
    font-size: 1rem;
    color: var(--color-gray-400);
    font-style: italic;
    margin: 0;
}

/* ===================================
   RSVP Section
   =================================== */
.rsvp {
    padding: var(--spacing-4xl) var(--spacing-lg);
    background: var(--color-black);
    text-align: center;
}

.rsvp-content {
    max-width: 600px;
    margin: 0 auto;
}

.rsvp .section-label {
    color: var(--color-gray);
}

.rsvp h2 {
    color: var(--color-white);
    margin-bottom: var(--spacing-md);
}

.rsvp-intro {
    color: var(--color-gray-400);
    font-size: 1.125rem;
    margin-bottom: var(--spacing-xl);
}

.btn-rsvp {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 1.25rem 3rem;
    font-family: var(--font-headlines);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-decoration: none;
    text-transform: uppercase;
    background: var(--color-white);
    color: var(--color-black);
    border: none;
    transition: all 0.3s ease;
}

.btn-rsvp:hover {
    background: var(--color-gray);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255, 255, 255, 0.15);
}

.btn-book {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: 1.25rem 3rem;
    margin-left: var(--spacing-sm);
    font-family: var(--font-headlines);
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    text-decoration: none;
    text-transform: uppercase;
    background: transparent;
    color: var(--color-white);
    border: 2px solid var(--color-white);
    transition: all 0.3s ease;
}

.btn-book:hover {
    background: var(--color-white);
    color: var(--color-black);
    transform: translateY(-2px);
}

.parking-chair {
    text-decoration: none;
    opacity: 0.7;
    filter: drop-shadow(0 0 4px rgba(255, 170, 83, 0.6));
    transition: all 0.3s ease;
    animation: chair-glow 2s ease-in-out infinite;
}

.parking-chair:hover {
    opacity: 1;
    filter: drop-shadow(0 0 8px rgba(255, 170, 83, 1));
}

@keyframes chair-glow {
    0%, 100% { filter: drop-shadow(0 0 4px rgba(255, 170, 83, 0.4)); }
    50% { filter: drop-shadow(0 0 8px rgba(255, 170, 83, 0.8)); }
}

/* Sticky RSVP Button */
.sticky-rsvp {
    position: fixed;
    bottom: var(--spacing-lg);
    right: var(--spacing-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem 1.5rem;
    background: var(--color-black);
    color: var(--color-white);
    font-family: var(--font-headlines);
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.15em;
    text-transform: uppercase;
    text-decoration: none;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    z-index: 100;
    transition: all 0.3s ease;
}

.sticky-rsvp:hover {
    background: var(--color-gray-800);
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.4);
}

/* ===================================
   Footer
   =================================== */
.footer {
    padding: var(--spacing-2xl) var(--spacing-lg);
    background: var(--color-black);
    color: var(--color-gray-400);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    flex-wrap: wrap;
    gap: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-gray-800);
}

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

.footer-tagline {
    font-size: 0.875rem;
    color: var(--color-gray-500);
    margin: var(--spacing-sm) 0 0;
}

.footer-info p {
    margin: 0 0 4px;
    font-size: 0.9375rem;
}

.footer-info strong {
    color: var(--color-white);
}

.footer-note p {
    margin: 0 0 4px;
    font-size: 0.8125rem;
    text-align: right;
}

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

.footer-link {
    color: var(--color-gray-400);
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color 0.3s ease;
}

.footer-link:hover {
    color: var(--color-white);
}

.footer-bottom p {
    margin: 0;
    font-size: 0.75rem;
    color: var(--color-gray-600);
}

/* ===================================
   Responsive
   =================================== */
@media (max-width: 1024px) {
    .expect-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

    .venues .venue-card {
        flex: 0 0 33.333%;
    }
}

@media (max-width: 768px) {
    .about-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }

    .about-sticker {
        width: 160px;
    }

    .expect-grid {
        grid-template-columns: 1fr;
    }

    .speakers-grid {
        grid-template-columns: 1fr;
    }

    .venues {
        flex-direction: column;
    }

    .venues .venue-card {
        flex: none;
        width: 100%;
        min-height: 300px;
    }

    .hero-details {
        flex-direction: column;
        gap: var(--spacing-md);
    }

    .detail-divider {
        width: 60px;
        height: 1px;
    }

    .btn-book {
        margin-left: 0;
        margin-top: var(--spacing-sm);
    }

    .timeline-day {
        flex-direction: column;
    }

    .day-marker {
        flex-direction: row;
        padding: 0;
        margin-bottom: var(--spacing-sm);
    }

    .day-marker-line {
        display: none;
    }

    .day-header {
        flex-wrap: wrap;
    }

    .pgh-stats {
        flex-direction: column;
        gap: var(--spacing-lg);
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

    .footer-note p {
        text-align: center;
    }

    blockquote {
        font-size: 1.375rem;
    }

    .nav {
        padding: var(--spacing-md) var(--spacing-lg);
    }

    .logo-img {
        height: 50px;
        max-width: 140px;
    }

    .sticky-rsvp {
        bottom: var(--spacing-md);
        right: var(--spacing-md);
        padding: 0.875rem 1.25rem;
    }

}

@media (max-width: 480px) {

    .timeline-event {
        padding-top: var(--spacing-sm);
        padding-bottom: var(--spacing-sm);
    }

    .event-partner {
        filter: grayscale(0.8) opacity(0.55);
    }

    .event-partner img {
        height: 22px;
    }

    :root {
        --spacing-lg: 1.5rem;
        --spacing-xl: 2rem;
        --spacing-2xl: 2.5rem;
        --spacing-3xl: 3rem;
        --spacing-4xl: 4rem;
    }

    .nav {
        padding: var(--spacing-sm) var(--spacing-md);
    }

    .logo-img {
        height: 40px;
        max-width: 120px;
    }

    .timeline-event {
        flex-direction: column;
        gap: var(--spacing-xs);
    }

    .event-time {
        min-width: auto;
    }

    .day-header,
    .timeline-event {
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
    }
}