:root {
    --bg-app: #121212;
    --bg-panel: #1e1e1e;
    --bg-hover: #2c2c2c;
    --text-main: #e0e0e0;
    --text-muted: #a0a0a0;
    --primary: #3b82f6;
    --primary-hover: #2563eb;
    --secondary: #4b5563;
    --secondary-hover: #374151;
    --accent: #10b981;
    --accent-hover: #059669;
    --danger: #ef4444;
    --danger-hover: #dc2626;
    --border: #333;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.5);
    --radius: 8px;
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background-color: var(--bg-app);
    color: var(--text-main);
    height: 100vh;
    overflow: hidden;
}

.app-layout {
    display: flex;
    flex-direction: column;
    height: 100%;
}

/* Header */
.app-header {
    height: 60px;
    background-color: var(--bg-panel);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 1.5rem;
}

.brand {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-weight: 600;
    font-size: 1.1rem;
    color: var(--text-main);
}

.header-controls {
    display: flex;
    gap: 0.5rem;
}

/* Main */
.app-main {
    flex: 1;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

/* Toolbar */
.toolbar {
    padding: 1rem;
    display: flex;
    gap: 1rem;
    align-items: center;
    justify-content: center;
    flex-wrap: wrap;
    background-color: var(--bg-app);
    z-index: 10;
}

.toolbar-group {
    display: flex;
    gap: 0.5rem;
}

.toolbar-divider {
    width: 1px;
    height: 24px;
    background-color: var(--border);
    margin: 0 0.5rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: var(--radius);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    border: none;
    transition: background-color 0.2s;
    text-decoration: none;
    color: white;
}
.btn-block { width: 100%; justify-content: center; margin-top: 0.5rem; }

.btn-sm { padding: 0.25rem 0.5rem; font-size: 0.85rem; }
.btn-primary { background-color: var(--primary); }
.btn-primary:hover { background-color: var(--primary-hover); }
.btn-secondary { background-color: var(--secondary); }
.btn-secondary:hover { background-color: var(--secondary-hover); }
.btn-accent { background-color: var(--accent); }
.btn-accent:hover { background-color: var(--accent-hover); }
.btn-danger { background-color: var(--danger); }
.btn-danger:hover { background-color: var(--danger-hover); }
.btn-ghost { background-color: transparent; color: var(--text-muted); }
.btn-ghost:hover { background-color: var(--bg-hover); color: var(--text-main); }
.btn-icon { background: none; border: none; color: var(--text-muted); cursor: pointer; padding: 4px; }
.btn-icon:hover { color: var(--text-main); }

/* Status Bar */
.status-bar {
    text-align: center;
    padding: 0.5rem;
    font-size: 0.9rem;
    color: var(--text-muted);
    min-height: 2rem;
}
.status-success { color: var(--accent); }
.status-error { color: var(--danger); }

/* Workspace */
.workspace {
    flex: 1;
    position: relative;
    overflow: auto;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 2rem;
    background-image: radial-gradient(#333 1px, transparent 1px);
    background-size: 20px 20px;
}

.canvas-container {
    position: relative;
    box-shadow: var(--shadow);
    border-radius: 4px;
    overflow: hidden;
    background-color: #000;
    max-width: 100%;
    max-height: 100%;
    display: flex;
}

canvas {
    display: block;
    max-width: 100%;
    max-height: 85vh;
    width: auto;
    height: auto;
    /* Hidden by default until active class added */
    display: none;
}

canvas.active {
    display: block;
}

.placeholder-text {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 300px;
    height: 200px;
    color: var(--text-muted);
    background-color: var(--bg-panel);
    border: 2px dashed var(--border);
    border-radius: var(--radius);
}

canvas.active + .placeholder-text {
    display: none;
}

/* Result Panel */
.result-panel {
    position: absolute;
    top: 1rem;
    right: 1rem;
    width: 500px;
    background-color: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    display: flex;
    flex-direction: column;
    z-index: 20;
    opacity: 0;
    pointer-events: none;
    transform: translateY(10px);
    transition: opacity 0.2s, transform 0.2s;
}

.result-panel.visible {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.result-header {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.result-header h3 { font-size: 1rem; font-weight: 500; }

.result-content {
    padding: 1rem;
    background-color: #000;
    display: flex;
    justify-content: center;
    min-height: 150px;
}

#result-image {
    max-width: 100%;
    max-height: 60vh;
    object-fit: contain;
    display: block;
}

/* Modal */
dialog {
    background: transparent;
    border: none;
    padding: 0;
    margin: auto;
}

dialog::backdrop {
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(2px);
}

.modal-content {
    background-color: var(--bg-panel);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    width: 400px;
    max-width: 90vw;
    box-shadow: var(--shadow);
    color: var(--text-main);
}

.modal-header {
    padding: 1rem;
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

#password-form { padding: 1.5rem; display: flex; flex-direction: column; gap: 1rem; }

.form-group { display: flex; flex-direction: column; gap: 0.5rem; }
.form-group label { font-size: 0.9rem; color: var(--text-muted); }
.form-group input {
    padding: 0.6rem;
    border-radius: 4px;
    border: 1px solid var(--border);
    background-color: var(--bg-app);
    color: white;
    font-family: inherit;
}
.form-group input:focus { outline: 2px solid var(--primary); border-color: transparent; }

.modal-footer { display: flex; justify-content: space-between; align-items: center; margin-top: 0.5rem; }
.status-text { font-size: 0.85rem; }

/* Auth Pages */
.auth-container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    background-color: var(--bg-app);
}

.auth-card {
    background-color: var(--bg-panel);
    padding: 2.5rem;
    border-radius: var(--radius);
    border: 1px solid var(--border);
    box-shadow: var(--shadow);
    width: 100%;
    max-width: 400px;
}

.auth-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1rem;
    margin-bottom: 2rem;
    color: var(--text-main);
}

.auth-error {
    background-color: rgba(239, 68, 68, 0.15);
    color: #fca5a5;
    padding: 0.75rem;
    border-radius: var(--radius);
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    text-align: center;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.version-footer {
    position: absolute;
    bottom: 1rem;
    left: 0;
    right: 0;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.85rem;
    pointer-events: none;
}

.version-tag {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-left: 0.5rem;
    font-weight: 400;
}