:root {
    --bg-main: #0B0F19;
    --bg-card: #161F30;
    --accent: #2563EB;
    --accent-hover: #1D4ED8;
    --text-main: #F3F4F6;
    --text-muted: #9CA3AF;
    --border: #1F2937;
    --success: #10B981;
}

body {
    margin: 0;
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: var(--bg-main);
    color: var(--text-main);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

/* Hero Section */
.hero-container {
    text-align: center;
    max-width: 600px;
    padding: 20px;
}

.hero-container h1 {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    margin-bottom: 16px;
}

.hero-container p {
    color: var(--text-muted);
    font-size: 1.15rem;
    margin-bottom: 32px;
}

.cta-button, .submit-button {
    background-color: var(--accent);
    color: white;
    font-weight: 600;
    border: none;
    padding: 14px 28px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.2s ease;
}

.cta-button:hover, .submit-button:hover {
    background-color: var(--accent-hover);
}

/* Modals */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(11, 15, 25, 0.85);
    backdrop-filter: blur(8px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 100;
}

.modal-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 32px;
    max-width: 450px;
    width: 90%;
}

.modal-content h2 { margin-top: 0; }
.modal-content p { color: var(--text-muted); font-size: 0.95rem; line-height: 1.5; }

/* Form Components */
#gate-form { display: flex; flex-direction: column; gap: 16px; margin-top: 24px; }
#gate-form input {
    background-color: var(--bg-main);
    border: 1px solid var(--border);
    border-radius: 6px;
    padding: 12px;
    color: white;
    font-size: 1rem;
}

.checkbox-label { display: flex; gap: 10px; font-size: 0.85rem; color: var(--text-muted); cursor: pointer; }
.checkbox-label input { cursor: pointer; }

/* Sandbox / Dropzone Workspaces */
.sandbox { width: 90%; max-width: 800px; padding: 20px; }
.drop-zone {
    border: 2px dashed var(--border);
    background-color: var(--bg-card);
    border-radius: 12px;
    padding: 60px 20px;
    text-align: center;
    cursor: pointer;
    transition: border-color 0.2s ease;
}
.drop-zone:hover { border-color: var(--accent); }

/* Progress Overlay Grid */
.progress-container {
    margin-top: 24px;
    background-color: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 20px;
}
.progress-bar-wrapper {
    background-color: var(--bg-main);
    border-radius: 4px;
    height: 8px;
    width: 100%;
    overflow: hidden;
    margin-bottom: 12px;
}
.progress-bar-fill {
    height: 100%;
    width: 0%;
    background-color: var(--accent);
    transition: width 0.4s linear;
}
.progress-status { font-family: monospace; font-size: 0.9rem; color: var(--success); }

/* Helper Classes */
.hidden { display: none !important; }