/* style.css — K-Viewer Web Client */

:root {
    --bg-primary: #0a0a0f;
    --bg-glass: rgba(20, 20, 35, 0.85);
    --bg-glass-hover: rgba(30, 30, 50, 0.9);
    --border-glass: rgba(255, 255, 255, 0.08);
    --accent: #4a9eff;
    --accent-hover: #6ab4ff;
    --text-primary: #e8e8f0;
    --text-secondary: #8888a0;
    --danger: #ff4a6a;
    --success: #4aff8a;
    --warning: #ffaa4a;
    --radius: 12px;
    --radius-sm: 8px;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    overflow: hidden;
    height: 100vh;
    width: 100vw;
}

/* ── State-based visibility ─────────────────────── */
.login-screen,
.viewer-screen { display: none; }

body.state-disconnected .login-screen,
body.state-connecting .login-screen,
body.state-error .login-screen { display: flex; }

body.state-waiting_approval .login-screen { display: flex; }

body.state-connected .viewer-screen { display: flex; }

/* ── Login Screen ───────────────────────────────── */
.login-screen {
    position: absolute;
    inset: 0;
    align-items: center;
    justify-content: center;
    background: radial-gradient(ellipse at 50% 30%, rgba(74, 158, 255, 0.08) 0%, transparent 60%),
                var(--bg-primary);
}

.login-card {
    background: var(--bg-glass);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius);
    padding: 40px;
    width: 380px;
    max-width: 90vw;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.login-card h1 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 8px;
    text-align: center;
}

.login-card .subtitle {
    color: var(--text-secondary);
    font-size: 0.85rem;
    text-align: center;
    margin-bottom: 28px;
}

.form-group {
    margin-bottom: 16px;
}

.form-group label {
    display: block;
    font-size: 0.8rem;
    color: var(--text-secondary);
    margin-bottom: 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.form-group input {
    width: 100%;
    padding: 10px 14px;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s;
}

.form-group input:focus {
    border-color: var(--accent);
}

.form-group input::placeholder {
    color: rgba(255, 255, 255, 0.2);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 20px;
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    color: white;
}

.btn-primary {
    width: 100%;
    background: var(--accent);
    margin-top: 8px;
}

.btn-primary:hover {
    background: var(--accent-hover);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-danger {
    background: var(--danger);
    padding: 6px 14px;
    font-size: 0.8rem;
}

.btn-danger:hover {
    filter: brightness(1.15);
}

.status-message {
    margin-top: 16px;
    padding: 10px 14px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    text-align: center;
    display: none;
}

.status-message.visible {
    display: block;
}

.status-message.info {
    background: rgba(74, 158, 255, 0.12);
    color: var(--accent);
    border: 1px solid rgba(74, 158, 255, 0.2);
}

.status-message.error {
    background: rgba(255, 74, 106, 0.12);
    color: var(--danger);
    border: 1px solid rgba(255, 74, 106, 0.2);
}

.status-message.waiting {
    background: rgba(255, 170, 74, 0.12);
    color: var(--warning);
    border: 1px solid rgba(255, 170, 74, 0.2);
}

/* ── Advanced toggle ─────────────────────────── */
.advanced-toggle {
    margin-top: 12px;
    text-align: center;
}

.advanced-toggle button {
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 0.78rem;
    cursor: pointer;
    padding: 4px 8px;
}

.advanced-toggle button:hover {
    color: var(--text-primary);
}

.advanced-fields {
    display: none;
    margin-top: 12px;
}

.advanced-fields.visible {
    display: block;
}

/* ── Viewer Screen ──────────────────────────────── */
.viewer-screen {
    position: absolute;
    inset: 0;
    flex-direction: column;
    background: #000;
}

.toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 6px 16px;
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-glass);
    z-index: 10;
    min-height: 40px;
}

.toolbar-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.toolbar-left .host-name {
    font-size: 0.85rem;
    font-weight: 500;
}

.toolbar-left .connection-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--success);
    box-shadow: 0 0 6px var(--success);
}

.toolbar-right {
    display: flex;
    align-items: center;
    gap: 8px;
}

.canvas-wrapper {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    position: relative;
}

.canvas-wrapper canvas {
    max-width: 100%;
    max-height: 100%;
    cursor: default;
    outline: none;
}

.status-bar {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 4px 16px;
    background: var(--bg-glass);
    backdrop-filter: blur(10px);
    border-top: 1px solid var(--border-glass);
    font-size: 0.75rem;
    color: var(--text-secondary);
    z-index: 10;
    min-height: 28px;
}

.status-bar .stat {
    display: flex;
    align-items: center;
    gap: 4px;
}

/* ── Spinner ─────────────────────────────────── */
.spinner {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255, 255, 255, 0.2);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* ── Fullscreen button ───────────────────────── */
.btn-icon {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid var(--border-glass);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    padding: 5px 8px;
    cursor: pointer;
    font-size: 0.85rem;
    transition: all 0.2s;
}

.btn-icon:hover {
    background: rgba(255, 255, 255, 0.12);
    color: var(--text-primary);
}