/* Handcrafted Unique CSS for Demo50 - RannaForm */
:root {
    --color-ink: hsl(35, 34%, 14%);
    --color-surface: hsl(82, 38%, 96%);
    --color-card: #ffffff;
    --color-accent: hsl(35, 72%, 43%);
    --color-supporting: hsl(231, 58%, 52%);
    --color-border: hsl(35, 20%, 85%);
    --color-muted: hsl(35, 12%, 45%);
    --font-heading: 'Anek Bangla', system-ui, sans-serif;
    --font-body: 'Sora', system-ui, sans-serif;
}

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

body {
    background-color: var(--color-surface);
    color: var(--color-ink);
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.65;
}

a {
    color: var(--color-accent);
    text-decoration: none;
}

.container {
    max-width: 1140px;
    margin: 0 auto;
    padding: 0 20px;
}

.demo-banner {
    background: #fff8e1;
    color: #f57f17;
    text-align: center;
    padding: 8px;
    font-size: 13px;
    border-bottom: 1px solid #ffecb3;
}

/* Header */
.site-header {
    background: var(--color-card);
    border-bottom: 2px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}

.header-flex {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 20px;
}

.brand {
    font-family: var(--font-heading);
    font-size: 26px;
    font-weight: 800;
    color: var(--color-accent);
}

.brand span {
    color: var(--color-ink);
}

.nav-links {
    display: flex;
    gap: 20px;
    list-style: none;
}

.nav-links a {
    color: var(--color-ink);
    font-weight: 600;
}

/* Layered Card Stack Hero */
.layered-hero {
    padding: 70px 0;
    background: linear-gradient(135deg, var(--color-surface) 0%, #edf7e4 100%);
}

.hero-flex {
    display: grid;
    grid-template-columns: 1.2fr 0.8fr;
    gap: 40px;
    align-items: center;
}

.hero-text h1 {
    font-family: var(--font-heading);
    font-size: 40px;
    line-height: 1.25;
    margin-bottom: 16px;
}

.hero-text p {
    font-size: 18px;
    color: var(--color-muted);
    margin-bottom: 24px;
}

.stack-container {
    position: relative;
}

.stack-card {
    background: var(--color-card);
    border-radius: 16px;
    padding: 24px;
    border: 1px solid var(--color-border);
    box-shadow: 0 12px 30px rgba(48, 37, 23, 0.08);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.stack-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(48, 37, 23, 0.12);
}

.btn-cta {
    display: inline-block;
    background: var(--color-accent);
    color: #ffffff;
    padding: 14px 28px;
    border-radius: 6px;
    font-weight: 700;
    font-size: 16px;
    border: none;
    cursor: pointer;
}

/* Cards Grid */
.cards-section {
    padding: 60px 0;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.card {
    background: var(--color-card);
    border-radius: 12px;
    padding: 30px;
    border: 1px solid var(--color-border);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-6px);
}

.card h3 {
    font-family: var(--font-heading);
    font-size: 22px;
    margin-bottom: 10px;
    color: var(--color-accent);
}

.card img {
    width: 100%;
    border-radius: 8px;
    margin-bottom: 16px;
}

/* Form Box */
.form-box {
    background: var(--color-card);
    padding: 40px;
    border-radius: 12px;
    border: 1px solid var(--color-border);
    max-width: 700px;
    margin: 0 auto;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    font-weight: 700;
    margin-bottom: 8px;
}

.form-control {
    width: 100%;
    padding: 12px;
    border: 1px solid var(--color-border);
    border-radius: 6px;
    font-family: inherit;
}

.alert {
    padding: 15px;
    border-radius: 6px;
    margin-bottom: 20px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
}

.btn-whatsapp-disabled {
    background: #444;
    color: #aaa;
    border: none;
    padding: 10px 16px;
    border-radius: 6px;
    cursor: not-allowed;
    width: 100%;
    margin-top: 10px;
}

footer {
    background: var(--color-ink);
    color: #ffffff;
    padding: 50px 0 20px 0;
    margin-top: 60px;
    text-align: center;
}

@media (max-width: 850px) {
    .hero-flex {
        grid-template-columns: 1fr;
    }
}