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

/* Design Tokens (matching the banner) */
:root {
    --bg-0: #01575D;
    --bg-1: #0B666B;
    --bg-2: #0E7075;
    --text: #EAF3F3;
    --muted: #BFD7D8;
    --dark: #0A0F10;
    --card: #0B0F10;
    --accent: #1B9988;
    --accent-hi: #2CC7B5;
    --shadow: 0 18px 45px rgba(0,0,0,.35);
    --radius: 14px;
    --radius-lg: 22px;
}

body {
    font-family: "Segoe UI", Inter, system-ui, Arial, sans-serif;
    line-height: 1.6;
    color: var(--text);
    background: var(--bg-0);
    min-height: 100vh;
    position: relative;
}

/* Texture/grain effect for poster feel */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-image: 
        radial-gradient(circle at 20% 30%, rgba(255, 255, 255, 0.03) 0%, transparent 50%),
        radial-gradient(circle at 80% 70%, rgba(255, 255, 255, 0.02) 0%, transparent 50%),
        radial-gradient(circle at 40% 80%, rgba(0, 0, 0, 0.05) 0%, transparent 40%);
    pointer-events: none;
    z-index: 10;
    opacity: 0.08;
}

body > * {
    position: relative;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Top Header with Logos */
.topbar {
    background-color: var(--bg-0);
    padding: 12px 0;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
    position: relative;
    z-index: 100;
}

.logo-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.vvalley-logo svg,
.vvalley-logo img,
.microsoft-logo svg {
    color: var(--text);
    fill: var(--text);
}

/* Hero Section - Top band with gradient */
.hero {
    background: linear-gradient(90deg, var(--bg-0) 0%, var(--bg-1) 50%, var(--bg-2) 100%);
    padding: 60px 0;
    position: relative;
    overflow: hidden;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    position: relative;
}

.hero-text h1 {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 900;
    color: var(--text);
    margin-bottom: 15px;
    letter-spacing: -2px;
    text-shadow: 2px 4px 8px rgba(0, 0, 0, 0.4);
    line-height: 1;
}

.event-date {
    font-size: clamp(1.3rem, 3vw, 2rem);
    color: var(--text);
    margin-bottom: 35px;
    font-weight: 300;
    letter-spacing: 0.5px;
}

.cta {
    display: inline-block;
    padding: 18px 50px;
    background-color: var(--accent);
    color: var(--text);
    border: none;
    border-radius: var(--radius);
    font-size: 1.3rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35), 0 0 20px rgba(27, 153, 136, 0.3);
    text-decoration: none;
}

.cta:hover,
.cta:focus {
    transform: translateY(-4px);
    box-shadow: 0 12px 30px rgba(0, 0, 0, 0.45), 0 0 30px rgba(44, 199, 181, 0.5);
    background-color: var(--accent-hi);
    outline: 2px solid var(--accent-hi);
    outline-offset: 3px;
}

.hero-graphic {
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Diamond/Gem on the right */
.diamond {
    position: relative;
    width: 280px;
    height: 280px;
    filter: drop-shadow(0 12px 30px rgba(0, 0, 0, 0.4));
}

.diamond img {
    max-width: 100%;
    height: auto;
    display: block;
    filter: drop-shadow(0 0 20px rgba(44, 199, 181, 0.25));
}

/* "La cita imprescindible" Band */
.band {
    padding: 50px 0;
    text-align: center;
    position: relative;
}

.band--dark {
    background: var(--bg-1);
    box-shadow: inset 0 4px 12px rgba(0, 0, 0, 0.15);
}

.band--light {
    background: var(--bg-2);
}

.band__title {
    font-size: clamp(1.5rem, 3.5vw, 2.2rem);
    color: var(--text);
    margin-bottom: 25px;
    font-weight: 700;
    line-height: 1.3;
}

.band__content {
    max-width: 900px;
    margin: 0 auto;
}

.band__intro {
    font-size: clamp(1rem, 2vw, 1.2rem);
    font-weight: 600;
    color: var(--text);
    margin-bottom: 18px;
    line-height: 1.6;
}

.band__text {
    font-size: clamp(0.95rem, 1.8vw, 1.05rem);
    color: var(--muted);
    line-height: 1.7;
}

/* Agenda Section - Icon on left, schedule on right */
.agenda {
    background: var(--bg-0);
    padding: 50px 0;
    box-shadow: inset 0 8px 16px rgba(0, 0, 0, 0.2);
}

.agenda__title {
    font-size: clamp(1.8rem, 4vw, 2.8rem);
    color: var(--text);
    margin-bottom: 45px;
    text-align: center;
    font-weight: 800;
    letter-spacing: 4px;
    text-transform: uppercase;
}

.agenda__wrapper {
    display: grid;
    grid-template-columns: 240px 1fr;
    gap: 50px;
    max-width: 1100px;
    margin: 0 auto;
    align-items: start;
}

.agenda__icon {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    position: sticky;
    top: 20px;
}

.agenda__icon img {
    max-width: 100%;
    height: auto;
    display: block;
    filter: drop-shadow(0 8px 16px rgba(0, 0, 0, 0.3));
}

.agenda__content {
    color: var(--text);
}

.agenda__time {
    font-size: clamp(1rem, 2vw, 1.15rem);
    margin: 22px 0 12px 0;
    color: var(--text);
    font-weight: 700;
}

.agenda__block {
    margin: 18px 0;
    padding-left: 8px;
}

.agenda__block strong {
    color: var(--text);
    font-size: clamp(1rem, 2vw, 1.1rem);
    font-weight: 700;
}

.agenda__block ul {
    list-style: none;
    margin-top: 10px;
    padding-left: 20px;
}

.agenda__block ul li {
    margin: 10px 0;
    color: var(--text);
    font-size: clamp(0.9rem, 1.8vw, 1rem);
    line-height: 1.6;
    position: relative;
    padding-left: 12px;
}

.agenda__block ul li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
}

/* "Surface and surprises" Band */
.surface-band {
    background: var(--bg-2);
    padding: 45px 0;
    text-align: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.surface-band__text {
    font-size: clamp(1.2rem, 2.5vw, 1.6rem);
    color: var(--text);
    max-width: 900px;
    margin: 0 auto;
    font-weight: 600;
    line-height: 1.5;
}

.surface-band__text strong {
    font-weight: 700;
}

/* Location Card - Black card with image */
.location {
    background: var(--bg-0);
    padding: 60px 0;
}

.location-card {
    max-width: 900px;
    margin: 0 auto;
    background-color: var(--card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow);
    display: flex;
    overflow: hidden;
    gap: 0;
}

.location-card__image {
    flex-shrink: 0;
    width: 320px;
    overflow: hidden;
}

.location-card__image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.location-card__details {
    padding: 35px 40px;
    color: var(--text);
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.location-card__title {
    font-size: clamp(1.2rem, 2.2vw, 1.6rem);
    margin-bottom: 15px;
    font-weight: 700;
    line-height: 1.3;
}

.location-card__details p {
    font-size: clamp(0.95rem, 1.8vw, 1.1rem);
    color: var(--text);
    margin: 5px 0;
    line-height: 1.5;
}

/* Final Urgency Line */
.footer-note {
    background-color: var(--bg-1);
    padding: 40px 0;
    text-align: center;
}

.footer-note__text {
    font-size: clamp(1.2rem, 2.5vw, 1.6rem);
    color: var(--text);
    font-weight: 600;
    max-width: 900px;
    margin: 0 auto;
}

/* Footer */
footer {
    background-color: var(--dark);
    color: var(--muted);
    text-align: center;
    padding: 25px 0;
    font-size: 0.9rem;
}

footer p {
    margin: 5px 0;
    opacity: 0.85;
}

/* Responsive Design - Mobile First */
@media (max-width: 768px) {
    .logo-container {
        flex-direction: column;
        gap: 15px;
        text-align: center;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 30px;
    }

    .hero-graphic {
        order: -1;
    }

    .diamond {
        width: 200px;
        height: 200px;
    }

    .agenda__wrapper {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .agenda__icon {
        order: 1;
        position: relative;
        top: 0;
    }

    .location-card {
        flex-direction: column;
    }

    .location-card__image {
        width: 100%;
        height: 220px;
    }
}

@media (max-width: 480px) {
    .hero {
        padding: 40px 0;
    }

    .cta {
        padding: 16px 40px;
        font-size: 1.15rem;
    }

    .diamond {
        width: 160px;
        height: 160px;
    }
}

/* Accessibility - Focus Styles */
a:focus,
button:focus,
input:focus,
select:focus,
textarea:focus {
    outline: 2px solid var(--accent-hi);
    outline-offset: 3px;
}

/* Notification Styles */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background-color: var(--accent);
    color: var(--dark);
    padding: 20px 30px;
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    transform: translateX(400px);
    opacity: 0;
    transition: all 0.3s ease;
    z-index: 1000;
    max-width: 400px;
    font-size: 1rem;
    font-weight: 600;
}

.notification.show {
    transform: translateX(0);
    opacity: 1;
}

@media (max-width: 480px) {
    .notification {
        left: 20px;
        right: 20px;
        max-width: none;
        transform: translateY(-100px);
    }

    .notification.show {
        transform: translateY(0);
    }
}