:root {
    --bg-color: #f4f4f9;
    --text-color: #333;
    --card-bg: #ffffff;
    --primary: #007bff;
    --whatsapp: #25D366;
    --border: #ccc;
}

@media (prefers-color-scheme: dark) {
    :root {
        --bg-color: #121212;
        --text-color: #f4f4f9;
        --card-bg: #1e1e1e;
        --border: #333;
    }
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: system-ui, -apple-system, sans-serif;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

header {
    text-align: center;
    padding: 1rem;
    background-color: var(--card-bg);
    border-bottom: 1px solid var(--border);
}

main {
    flex: 1;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 1rem;
}

.card {
    background-color: var(--card-bg);
    padding: 2rem;
    border-radius: 8px;
    box-shadow: 0 4px 6px rgba(0,0,0,0.1);
    width: 100%;
    max-width: 400px;
    text-align: center;
}

form {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-top: 1rem;
}

input {
    padding: 0.8rem;
    border: 1px solid var(--border);
    border-radius: 4px;
    background-color: var(--bg-color);
    color: var(--text-color);
    width: 100%;
}

button, .btn-whatsapp, .btn-danger {
    padding: 0.8rem;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    font-weight: bold;
    text-decoration: none;
    display: inline-block;
    width: 100%;
    text-align: center;
}

.btn-primary {
    background-color: var(--primary);
    color: white;
}

.btn-danger {
    background-color: #dc3545;
    color: white;
}

.support-container {
    margin-top: 2rem;
    border-top: 1px solid var(--border);
    padding-top: 1rem;
}

.btn-whatsapp {
    background-color: var(--whatsapp);
    color: white;
    margin-top: 0.5rem;
}

/* Video Section Constraints */
#video-section {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    background: black;
    z-index: 1000;
}

#video-container {
    position: relative;
    width: 100%;
    height: 100%;
}

#player-wrapper, #player-wrapper iframe {
    width: 100%;
    height: 100%;
    border: none;
}

/* Invisible layer blocking clicks */
#touch-blocker {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 9999;
    background: transparent;
}

/* Mandatory Hidden Controller */
.hidden {
    display: none !important;
}