```css
:root {
    --primary: #4a3c31;
    --gold: #c4a484;
    --gold-dark: #b08e6c;
    --background: #fcfbf9;
    --white: #ffffff;
    --text: #333333;
}

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

html {
    scroll-behavior: smooth;
}

html,
body {
    width: 100%;
    overflow-x: hidden;
}

body {
    font-family: 'Lora', serif;
    background: var(--background);
    color: var(--text);
    line-height: 1.6;
}

/* ==========================
   HERO SECTION
========================== */

.hero {
    position: relative;
    width: 100%;
    height: 90vh;
    min-height: 650px;
    overflow: hidden;
}

.hero-image {
    position: absolute;
    inset: 0;

    width: 100%;
    height: 100%;

    object-fit: cover;
    object-position: center center;

    display: block;
}

.hero-overlay {
    position: absolute;
    inset: 0;

    background: linear-gradient(
        rgba(0,0,0,0.20),
        rgba(0,0,0,0.45)
    );
}

.hero-content {
    position: relative;
    z-index: 2;

    width: 100%;
    max-width: 900px;

    margin: 0 auto;

    height: 100%;

    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;

    text-align: center;

    padding: 2rem;

    color: white;
}

.hero h1 {
    font-family: 'Playfair Display', serif;
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 500;
    letter-spacing: 2px;
    margin-bottom: 1rem;
}

.hero h1 span {
    color: #d6b37a;
}

.hero-date {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    letter-spacing: 1px;
}

.hero-tagline {
    max-width: 600px;
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.hero-button {
    background: var(--gold);
    color: white;
    text-decoration: none;
    padding: 14px 34px;
    border-radius: 40px;
    transition: all 0.3s ease;
}

.hero-button:hover {
    background: var(--gold-dark);
    transform: translateY(-2px);
}

/* ==========================
   MAIN CONTAINER
========================== */

.container {
    max-width: 1100px;
    margin: -80px auto 80px;
    padding: 0 20px;
    position: relative;
    z-index: 10;
}

/* ==========================
   SECTION HEADINGS
========================== */

h2,
h3 {
    font-family: 'Playfair Display', serif;
    color: var(--primary);
    font-weight: 400;
}

/* ==========================
   CARDS
========================== */

.upload-section,
.info-card,
.qr-card {

    background: #ffffff;

    padding: 2rem;

    border-radius: 8px;

    border-top: 6px solid #c4a484;

    border-left: 1px solid rgba(196,164,132,0.35);

    border-right: 1px solid rgba(196,164,132,0.35);

    border-bottom: 1px solid rgba(196,164,132,0.20);

    box-shadow:
        0 4px 15px rgba(0,0,0,0.05);
}

/* ==========================
   UPLOAD SECTION
========================== */

.upload-section {
    text-align: center;
    margin-bottom: 2rem;
}

.upload-section h2 {
    font-size: 2.4rem;
    margin-bottom: 0.75rem;
}

.section-intro {
    color: #666;
    margin-bottom: 2rem;
}

.file-drop-area {
    position: relative;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;

    padding: 3rem;

    border: 2px dashed var(--gold);

    border-radius: 8px;

    background: #ffffff;

    margin: 2rem 0;

    transition: 0.2s;
}

.file-drop-area:hover {
    background: #faf8f5;
}

.upload-icon {
    display: block;
    font-size: 3rem;
    margin-bottom: 1rem;
}

.file-input {
    position: absolute;
    inset: 0;

    width: 100%;
    height: 100%;

    opacity: 0;

    cursor: pointer;
}

.submit-btn {
    background: var(--gold);
    color: white;

    border: none;

    padding: 12px 30px;

    font-size: 1.1rem;

    border-radius: 4px;

    cursor: pointer;

    transition: background-color 0.3s ease;
}

.submit-btn:hover {
    background: var(--gold-dark);
}

.submit-btn:disabled {
    background: #cccccc;
    cursor: not-allowed;
}

/* ==========================
   INFO SECTION
========================== */

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

/* ==========================
   EVENT DETAILS CARD
========================== */

.info-card h3,
.qr-card h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
}

.info-card ul {
    list-style: none;
}

.info-card li {
    margin-bottom: 0.8rem;

    padding-bottom: 0.75rem;

    border-bottom: 1px solid #eeeeee;

    font-size: 1.15rem;

    line-height: 1.8;
}

.info-card strong {
    color: #2f2a25;
    font-weight: 700;
}

/* ==========================
   QR CARD
========================== */

.qr-card {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

#qrcode {
    margin: 1.5rem 0;

    padding: 10px;

    background: #ffffff;

    border: 1px solid #eeeeee;

    display: flex;

    justify-content: center;

    align-items: center;
}

#qrcode img,
#qrcode canvas,
#qrcode table {
    margin: 0 auto !important;
}

.qr-card p {
    color: var(--primary);

    font-weight: 600;

    font-size: 1rem;

    border-bottom: 1px solid var(--gold);

    display: inline-block;

    padding-bottom: 3px;
}

/* ==========================
   STATUS MESSAGE
========================== */

#uploadStatus {
    margin-top: 1rem;
    font-weight: bold;
    color: var(--gold-dark);
}

/* ==========================
   MOBILE
========================== */

@media (max-width: 768px) {

    .hero {
        height: 65vh;
        min-height: 450px;
    }

    .hero-content {
        padding: 1rem;
    }

    .hero h1 {
        font-size: 3rem;
        line-height: 1.1;
    }

    .hero-date {
        font-size: 1rem;
    }

    .hero-tagline {
        max-width: 320px;
        font-size: 0.95rem;
    }

    .container {
        margin-top: -20px;
        padding: 0 15px;
    }

    .info-section {
        grid-template-columns: 1fr;
    }

    .upload-section,
    .info-card,
    .qr-card {
        padding: 1.5rem;
    }

    .file-drop-area {
        padding: 2rem 1rem;
    }
}
```