/* Handcrafted Unique CSS for Demo45 - Chokh360 Systems */
:root {
    --color-ink: hsl(68, 34%, 14%);
    --color-surface: hsl(115, 38%, 96%);
    --color-card: #ffffff;
    --color-accent: hsl(68, 72%, 43%);
    --color-supporting: hsl(264, 58%, 52%);
    --color-border: hsl(68, 20%, 85%);
    --color-muted: hsl(68, 12%, 45%);
    --font-heading: 'Atma', cursive, sans-serif;
    --font-body: 'Source Sans 3', 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-supporting);
    text-decoration: none;
}

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

.demo-banner {
    background: #e8f5e9;
    color: #1b5e20;
    text-align: center;
    padding: 8px;
    font-size: 13px;
    border-bottom: 1px solid #c8e6c9;
}

/* 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-size: 24px;
    font-weight: 800;
    color: var(--color-ink);
}

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

.site-nav ul {
    display: flex;
    list-style: none;
    gap: 20px;
    align-items: center;
}

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

.site-nav a.active {
    color: var(--color-supporting);
}

.btn-nav-cta {
    background: var(--color-supporting);
    color: #ffffff !important;
    padding: 8px 16px;
    border-radius: 6px;
}

/* Poster Style Centered Headline & Overlapping Images */
.poster-hero {
    padding: 70px 0 90px 0;
    text-align: center;
    background: linear-gradient(180deg, var(--color-surface) 0%, #e6f7e2 100%);
    position: relative;
    clip-path: polygon(0 0, 100% 0, 100% 92%, 0 100%); /* Diagonal section transition */
}

.poster-hero h1 {
    font-size: 46px;
    font-weight: 900;
    color: var(--color-ink);
    max-width: 850px;
    margin: 0 auto 20px auto;
    line-height: 1.2;
}

.poster-hero p {
    font-size: 20px;
    color: var(--color-muted);
    max-width: 700px;
    margin: 0 auto 30px auto;
}

.overlapping-window {
    position: relative;
    max-width: 900px;
    margin: 0 auto;
}

.overlapping-window img.main-img {
    width: 100%;
    border-radius: 16px;
    box-shadow: 0 16px 40px rgba(40, 48, 23, 0.15);
    border: 4px solid #ffffff;
}

.overlapping-window img.overlay-img {
    position: absolute;
    bottom: -30px;
    right: -20px;
    width: 320px;
    border-radius: 12px;
    box-shadow: 0 12px 30px rgba(0,0,0,0.2);
    border: 3px solid #ffffff;
}

/* Diagonal Cards */
.diagonal-section {
    padding: 80px 0;
}

.cards-grid {
    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);
    box-shadow: 0 8px 24px rgba(40, 48, 23, 0.05);
}

.card h3 {
    font-size: 20px;
    margin-bottom: 12px;
    color: var(--color-supporting);
}

/* Form */
.form-card {
    background: var(--color-card);
    padding: 40px;
    border-radius: 16px;
    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;
}

.btn-submit {
    background: var(--color-supporting);
    color: #ffffff;
    padding: 14px 28px;
    border-radius: 6px;
    border: none;
    font-weight: 700;
    font-size: 16px;
    cursor: pointer;
    width: 100%;
}

.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;
}

.site-footer {
    background: var(--color-ink);
    color: #ffffff;
    padding: 60px 0 0 0;
    margin-top: 60px;
}

.footer-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr 1.2fr;
    gap: 40px;
    padding-bottom: 40px;
}

.footer-grid h3, .footer-grid h4 {
    color: var(--color-accent);
    margin-bottom: 16px;
}

.footer-grid p, .footer-grid a {
    color: #ccc;
    font-size: 14px;
}

.footer-grid ul {
    list-style: none;
}

.footer-grid ul li {
    margin-bottom: 8px;
}

@media (max-width: 850px) {
    .overlapping-window img.overlay-img {
        display: none;
    }
    .poster-hero h1 {
        font-size: 32px;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .site-nav ul {
        flex-wrap: wrap;
    }
}