:root {
    --color-primary: #D8CDBA;
    /* Sandy Beige / Cream */
    --color-secondary: #3E4E36;
    /* Forest Green */
    --color-accent: #8B4C4C;
    /* Muted Terracotta */
    --color-bg-dark: rgba(20, 25, 20, 0.4);
    /* Dark overlay */
    --color-text-light: #F7F5F0;
    --color-text-dark: #2C3524;
    --color-border: rgba(247, 245, 240, 0.4);

    --font-serif: 'Cormorant Garamond', serif;
    --font-sans: 'Montserrat', sans-serif;

    --transition-smooth: all 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}

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

body {
    font-family: var(--font-sans);
    color: var(--color-text-light);
    background-color: #1a1a1a;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

#app-container {
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    position: relative;
    background-image: url('wedding_background.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
}

.bg-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(to bottom, rgba(0, 0, 0, 0.2), rgba(0, 0, 0, 0.6));
    z-index: 1;
}

.content-wrapper {
    position: relative;
    z-index: 2;
    width: 100%;
    max-width: 800px;
    padding: 2rem;
}

/* Typography */
.title {
    font-family: var(--font-serif);
    font-size: 4rem;
    font-weight: 400;
    text-align: center;
    margin-bottom: 0.5rem;
    letter-spacing: 2px;
    color: var(--color-primary);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.subtitle {
    font-family: var(--font-sans);
    font-size: 1rem;
    font-weight: 300;
    text-align: center;
    margin-bottom: 3rem;
    letter-spacing: 1px;
    color: var(--color-text-light);
    opacity: 0.9;
}

.section-title {
    font-family: var(--font-serif);
    font-size: 2rem;
    font-weight: 400;
    margin-bottom: 1.5rem;
    color: var(--color-primary);
    border-bottom: 1px solid var(--color-border);
    padding-bottom: 0.5rem;
}

/* Sections & Animations */
.step-card {
    background: rgba(44, 53, 36, 0.4);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: 3rem 2rem;
    border-radius: 4px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    opacity: 0;
    transform: translateY(20px);
    transition: var(--transition-smooth);
    display: none;
}

.step-card.active-section {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.step-card.hidden {
    display: none;
}

/* Inputs & Buttons */
.input-group {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    align-items: center;
}

input[type="text"],
input[type="email"],
input[type="password"],
textarea {
    width: 100%;
    background: transparent;
    border: none;
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-light);
    font-family: var(--font-sans);
    font-size: 1rem;
    padding: 0.8rem 0;
    transition: var(--transition-smooth);
}

input[type="text"]:focus,
input[type="email"]:focus,
input[type="password"]:focus,
textarea:focus {
    outline: none;
    border-bottom-color: var(--color-primary);
}

input::placeholder,
textarea::placeholder {
    color: rgba(247, 245, 240, 0.5);
}

button {
    background: transparent;
    color: var(--color-primary);
    font-family: var(--font-sans);
    font-size: 0.9rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    border: 1px solid var(--color-border);
    padding: 1rem 2.5rem;
    cursor: pointer;
    transition: var(--transition-smooth);
    border-radius: 2px;
    margin-top: 1rem;
}

button:hover {
    background: rgba(216, 205, 186, 0.1);
    border-color: var(--color-primary);
    transform: translateY(-2px);
}

/* Events List */
.event-item {
    margin-bottom: 2rem;
}

.event-name {
    font-family: var(--font-serif);
    font-size: 1.8rem;
    color: var(--color-text-light);
    margin-bottom: 0.5rem;
}

.event-details {
    font-size: 0.85rem;
    opacity: 0.7;
    margin-bottom: 1rem;
    font-weight: 300;
}

.rsvp-options {
    display: flex;
    gap: 1rem;
}

.rsvp-radio {
    display: none;
}

.rsvp-label {
    flex: 1;
    text-align: center;
    padding: 0.8rem;
    border: 1px solid var(--color-border);
    cursor: pointer;
    transition: var(--transition-smooth);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.rsvp-radio:checked+.rsvp-label {
    background: var(--color-primary);
    color: var(--color-text-dark);
    border-color: var(--color-primary);
}

/* Dietary Section */
.dietary-section {
    margin-top: 3rem;
    margin-bottom: 2rem;
}

textarea {
    min-height: 100px;
    resize: vertical;
}

/* Utilities */
.error-msg {
    color: var(--color-accent);
    font-size: 0.85rem;
    text-align: center;
    margin-top: 1rem;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.error-msg.visible {
    opacity: 1;
}

.details-text {
    text-align: center;
    font-weight: 300;
    opacity: 0.8;
}

@media (max-width: 600px) {
    .title {
        font-size: 3rem;
    }

    .step-card {
        padding: 2rem 1.5rem;
    }
}