:root {
    --bg-color: #f4f4f0;
    --card-bg: #ffffff;
    --text-main: #1a1a1a;
    --text-muted: #444444; /* Darkened for better contrast on bg */
    --text-light: #666666;
    --accent-color: #1a1a1a;
    --border-light: #e5e5e5;
    --font-serif: 'Playfair Display', serif;
    --font-sans: 'Inter', sans-serif;
    --max-width: 1200px;
}

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

body {
    background-color: var(--bg-color);
    color: var(--text-main);
    font-family: var(--font-sans);
    line-height: 1.5;
    -webkit-font-smoothing: antialiased;
    min-height: 100vh;
    overflow-x: hidden;
}

/* Background Setup */
.background-image {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -2;
    background-image: url('/static/img/background.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
}

.background-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    /* Subtle gradient overlay to ensure text readability while showing the image */
    background: linear-gradient(to right, 
        rgba(244, 244, 240, 0.95) 0%, 
        rgba(244, 244, 240, 0.85) 40%, 
        rgba(244, 244, 240, 0.4) 100%);
}

/* Layout */
.main-grid {
    display: grid;
    grid-template-columns: 1fr;
    min-height: 100vh;
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 2rem;
    gap: 4rem;
    position: relative;
    z-index: 1;
}

@media (min-width: 900px) {
    .main-grid {
        grid-template-columns: 1fr 1fr;
        align-items: center;
        padding: 4rem;
    }
}

/* Left Column: Content */
.content-col {
    display: flex;
    flex-direction: column;
    justify-content: center;
    max-width: 540px;
    margin: 0 auto;
}

@media (min-width: 900px) {
    .content-col {
        margin: 0;
    }
}

.header {
    margin-bottom: 2rem;
}

.brand {
    display: flex;
    align-items: center;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-light);
}

/* Typography Updates */
.main-title {
    font-family: var(--font-serif);
    font-size: 5rem;
    line-height: 1;
    font-weight: 700;
    margin-bottom: 1.5rem;
    letter-spacing: -0.04em;
    color: var(--text-main);
    margin-left: -0.05em;
}

.value-prop {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 400;
    font-style: italic;
    line-height: 1.3;
    color: var(--text-main);
    margin-bottom: 1.5rem;
}

.description {
    font-size: 1.1rem;
    color: var(--text-muted);
    margin-bottom: 3rem;
    line-height: 1.6;
    max-width: 480px;
    font-weight: 500;
}

@media (min-width: 900px) {
    .main-title {
        font-size: 6rem;
    }
}

@media (max-width: 600px) {
    .main-title {
        font-size: 4rem;
    }
    .value-prop {
        font-size: 1.5rem;
    }
}

/* Form */
.signup-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-row {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.input-group label {
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-main);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

input {
    padding: 1rem;
    background: rgba(255, 255, 255, 0.7); /* More opaque for contrast */
    border: 1px solid #ccc;
    border-radius: 8px;
    font-family: var(--font-sans);
    font-size: 1rem;
    transition: all 0.2s ease;
}

input:focus {
    outline: none;
    border-color: var(--text-main);
    background: #fff;
    box-shadow: 0 0 0 3px rgba(0,0,0,0.05);
}

.btn-submit {
    background: var(--text-main);
    color: #fff;
    border: none;
    padding: 1.25rem;
    border-radius: 8px;
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 1.1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
    margin-top: 0.5rem;
}

.btn-submit:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.1);
}

.micro-copy {
    font-size: 0.85rem;
    color: var(--text-light);
    text-align: center;
}

/* Right Column: Visual Mockup */
.visual-col {
    display: flex;
    justify-content: center;
    align-items: center;
    perspective: 1000px;
    padding-top: 2rem;
}

@media (min-width: 900px) {
    .visual-col {
        justify-content: flex-end;
        padding-top: 0;
    }
}

.digest-mockup-card {
    background: var(--card-bg);
    width: 100%;
    max-width: 420px;
    height: auto;
    min-height: 500px;
    border-radius: 16px;
    box-shadow: 
        0 20px 40px rgba(0,0,0,0.1),
        0 1px 3px rgba(0,0,0,0.05);
    padding: 2.5rem 2rem;
    position: relative;
    transform: rotate(-3deg) translateY(0px);
    transition: transform 0.5s ease;
    border: 1px solid rgba(0,0,0,0.03);
    animation: float 6s ease-in-out infinite;
}

.digest-mockup-card:hover {
    transform: rotate(0deg) translateY(-10px);
}

@keyframes float {
    0% { transform: rotate(-3deg) translateY(0px); }
    50% { transform: rotate(-3deg) translateY(-15px); }
    100% { transform: rotate(-3deg) translateY(0px); }
}

.mockup-header {
    border-bottom: 1px solid #eee;
    padding-bottom: 1rem;
    margin-bottom: 1.5rem;
}

.mockup-date {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: #999;
    margin-bottom: 0.5rem;
}

.mockup-title {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 700;
    color: #111;
}

.mockup-content {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.mockup-tweet {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
    width: 100%;
}

.tweet-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: #eee;
    object-fit: cover;
    border: 1px solid rgba(0,0,0,0.05);
    flex-shrink: 0;
}

.tweet-body {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.tweet-meta {
    display: flex;
    align-items: baseline;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.tweet-name {
    font-weight: 700;
    font-size: 0.95rem;
    color: #111;
    line-height: 1.2;
}

.tweet-handle {
    font-size: 0.85rem;
    color: #777;
    font-weight: 400;
}

.tweet-text {
    font-size: 0.95rem;
    line-height: 1.5;
    color: #333;
    font-weight: 400;
    word-wrap: break-word;
    margin-top: 0.1rem;
}

.mockup-badge {
    position: absolute;
    bottom: 1.5rem;
    right: 1.5rem;
    background: #000;
    color: #fff;
    padding: 0.4rem 0.8rem;
    border-radius: 20px;
    font-size: 0.75rem;
    font-weight: 600;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
    z-index: 2;
}

/* Mobile Adjustments */
@media (max-width: 900px) {
    .background-overlay {
        background: linear-gradient(to bottom, 
            rgba(244, 244, 240, 0.95) 0%, 
            rgba(244, 244, 240, 0.85) 60%, 
            rgba(244, 244, 240, 0.4) 100%);
    }

    .visual-col {
        margin-bottom: 2rem;
        order: 1;
    }
    
    .digest-mockup-card {
        min-height: auto;
        transform: rotate(0deg);
        animation: none;
        margin-bottom: 2rem;
    }
}