:root {
    --bg-primary: #0a0a0f;
    --bg-secondary: #111118;
    --bg-card: rgba(255, 255, 255, 0.03);
    --bg-card-hover: rgba(255, 255, 255, 0.06);
    --border: rgba(255, 255, 255, 0.08);
    --border-hover: rgba(255, 255, 255, 0.15);
    --text-primary: #f0f0f5;
    --text-secondary: #8888a0;
    --text-muted: #555568;
    --accent-cyan: #00f0ff;
    --accent-purple: #b000ff;
    --accent-green: #00ff88;
    --accent-red: #ff4060;
    --accent-orange: #ff8800;
    --accent-gradient: linear-gradient(135deg, #00f0ff, #b000ff);
    --glow-cyan: 0 0 20px rgba(0, 240, 255, 0.3);
    --font-display: 'Orbitron', sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    --radius: 12px;
    --radius-sm: 8px;
}

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

body {
    background: var(--bg-primary);
    color: var(--text-primary);
    font-family: var(--font-body);
    line-height: 1.6;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
}

/* ─── Auth Screen ─── */
.auth-screen {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    padding: 24px;
}

.auth-glow {
    position: absolute;
    width: 500px;
    height: 500px;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: radial-gradient(circle, rgba(0,240,255,0.1) 0%, rgba(176,0,255,0.06) 40%, transparent 70%);
    pointer-events: none;
}

.auth-container {
    position: relative;
    width: 100%;
    max-width: 400px;
    padding: 48px 36px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 16px;
    text-align: center;
}

.auth-brand {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 900;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 8px;
}

.auth-container h2 {
    font-size: 1.3rem;
    font-weight: 600;
    margin-bottom: 4px;
}

.auth-container > p {
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-bottom: 32px;
}

.input-group {
    text-align: left;
    margin-bottom: 16px;
}

.input-group label {
    display: block;
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-secondary);
    margin-bottom: 6px;
}

.input-group input {
    width: 100%;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    outline: none;
    transition: border-color 0.2s;
}

.input-group input:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.1);
}

.input-group input::placeholder {
    color: var(--text-muted);
}

.auth-error {
    color: var(--accent-red);
    font-size: 0.85rem;
    min-height: 24px;
    margin-bottom: 8px;
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 12px 24px;
    border-radius: 100px;
    font-size: 0.9rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: none;
    font-family: var(--font-body);
    transition: all 0.2s;
}

.btn-primary {
    background: var(--accent-gradient);
    color: var(--bg-primary);
}

.btn-primary:hover {
    box-shadow: 0 4px 20px rgba(0, 240, 255, 0.3);
    transform: translateY(-1px);
}

.btn-primary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
    box-shadow: none;
}

.btn-full {
    width: 100%;
}

.btn-sm {
    padding: 8px 16px;
    font-size: 0.8rem;
}

.btn-outline {
    background: transparent;
    color: var(--text-secondary);
    border: 1px solid var(--border);
}

.btn-outline:hover {
    border-color: var(--border-hover);
    color: var(--text-primary);
}

.btn-call {
    background: linear-gradient(135deg, var(--accent-green), #00cc66);
    color: var(--bg-primary);
}

.btn-call:hover {
    box-shadow: 0 4px 20px rgba(0, 255, 136, 0.3);
    transform: translateY(-1px);
}

.btn-ai {
    background: linear-gradient(135deg, var(--accent-purple), #8000cc);
    color: #fff;
}

.btn-ai:hover {
    box-shadow: 0 4px 20px rgba(176, 0, 255, 0.3);
    transform: translateY(-1px);
}

.auth-toggle {
    margin-top: 20px;
    font-size: 0.85rem;
    color: var(--text-muted);
}

.auth-toggle button {
    background: none;
    border: none;
    color: var(--accent-cyan);
    font-weight: 600;
    cursor: pointer;
    font-size: 0.85rem;
    font-family: var(--font-body);
}

.auth-toggle button:hover {
    text-decoration: underline;
}

.auth-back {
    display: inline-block;
    margin-top: 16px;
    font-size: 0.8rem;
    color: var(--text-muted);
    text-decoration: none;
}

.auth-back:hover {
    color: var(--text-secondary);
}

/* ─── Panel Nav ─── */
.panel-nav {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 28px;
    background: rgba(10, 10, 15, 0.9);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 50;
}

.panel-brand {
    font-family: var(--font-display);
    font-size: 1.2rem;
    font-weight: 900;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    text-decoration: none;
}

.panel-nav-right {
    display: flex;
    align-items: center;
    gap: 24px;
}

.connection-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.8rem;
    color: var(--text-muted);
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--accent-orange);
    transition: background 0.3s;
}

.connection-status.connected .status-dot {
    background: var(--accent-green);
    box-shadow: 0 0 8px rgba(0, 255, 136, 0.5);
}

.connection-status.disconnected .status-dot {
    background: var(--accent-red);
}

.user-info {
    display: flex;
    align-items: center;
    gap: 12px;
}

.user-info span {
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* ─── Panel Main ─── */
.panel-main {
    max-width: 900px;
    margin: 0 auto;
    padding: 40px 24px 80px;
}

.panel-header {
    margin-bottom: 40px;
}

.panel-header h1 {
    font-family: var(--font-display);
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.panel-header p {
    color: var(--text-secondary);
    font-size: 0.95rem;
}

/* ─── Control Cards ─── */
.controls-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

.control-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    overflow: hidden;
    transition: border-color 0.3s;
}

.control-card:hover {
    border-color: var(--border-hover);
}

.card-wide {
    grid-column: 1 / -1;
}

.card-header {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 24px 24px 0;
}

.card-icon {
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
}

.message-icon {
    background: rgba(0, 240, 255, 0.1);
    color: var(--accent-cyan);
    border: 1px solid rgba(0, 240, 255, 0.2);
}

.call-icon {
    background: rgba(0, 255, 136, 0.1);
    color: var(--accent-green);
    border: 1px solid rgba(0, 255, 136, 0.2);
}

.ai-icon {
    background: rgba(176, 0, 255, 0.1);
    color: var(--accent-purple);
    border: 1px solid rgba(176, 0, 255, 0.2);
}

.card-header h3 {
    font-size: 1rem;
    font-weight: 600;
}

.card-header p {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 2px;
}

.card-body {
    padding: 16px 24px;
}

.input-row {
    display: flex;
    gap: 10px;
}

.input-row input {
    flex: 1;
    padding: 12px 16px;
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.9rem;
    outline: none;
    transition: border-color 0.2s;
}

.input-row input:focus {
    border-color: var(--accent-cyan);
    box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.08);
}

.input-row input::placeholder {
    color: var(--text-muted);
}

.card-status {
    padding: 12px 24px;
    background: var(--bg-card);
    border-top: 1px solid var(--border);
    display: flex;
    align-items: center;
    gap: 8px;
}

.status-label {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.status-value {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-family: monospace;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* ─── Activity Log ─── */
.activity-section h3 {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.activity-log {
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    max-height: 300px;
    overflow-y: auto;
}

.activity-empty {
    padding: 40px;
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
}

.activity-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 20px;
    border-bottom: 1px solid var(--border);
    font-size: 0.85rem;
    animation: slideIn 0.3s ease;
}

.activity-item:last-child {
    border-bottom: none;
}

.activity-type {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 3px 8px;
    border-radius: 4px;
    flex-shrink: 0;
}

.activity-type.message {
    background: rgba(0, 240, 255, 0.1);
    color: var(--accent-cyan);
}

.activity-type.call {
    background: rgba(0, 255, 136, 0.1);
    color: var(--accent-green);
}

.activity-type.ai {
    background: rgba(176, 0, 255, 0.1);
    color: var(--accent-purple);
}

.activity-text {
    color: var(--text-secondary);
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    flex: 1;
}

.activity-time {
    color: var(--text-muted);
    font-size: 0.75rem;
    flex-shrink: 0;
}

@keyframes slideIn {
    from { opacity: 0; transform: translateX(-10px); }
    to { opacity: 1; transform: translateX(0); }
}

/* ─── Toast ─── */
.toast {
    position: fixed;
    bottom: 24px;
    right: 24px;
    padding: 14px 24px;
    border-radius: var(--radius-sm);
    font-size: 0.9rem;
    font-weight: 500;
    color: #fff;
    z-index: 1000;
    animation: toastIn 0.3s ease, toastOut 0.3s ease 2.7s forwards;
}

.toast.success { background: rgba(0, 200, 100, 0.9); }
.toast.error { background: rgba(255, 64, 96, 0.9); }

@keyframes toastIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

@keyframes toastOut {
    from { opacity: 1; }
    to { opacity: 0; }
}

/* ─── Button Loading Spinner ─── */
.btn-loading {
    display: inline-block;
    width: 16px;
    height: 16px;
    border: 2px solid rgba(255,255,255,0.3);
    border-top-color: #fff;
    border-radius: 50%;
    animation: btnSpin 0.6s linear infinite;
}

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

/* ─── Scrollbar ─── */
.activity-log::-webkit-scrollbar {
    width: 6px;
}

.activity-log::-webkit-scrollbar-track {
    background: transparent;
}

.activity-log::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

/* ─── Responsive ─── */
@media (max-width: 700px) {
    .controls-grid {
        grid-template-columns: 1fr;
    }
    .card-wide {
        grid-column: auto;
    }
    .panel-nav {
        padding: 12px 16px;
    }
    .panel-nav-right {
        gap: 12px;
    }
    .user-info span {
        display: none;
    }
    .input-row {
        flex-direction: column;
    }
    .auth-container {
        padding: 36px 24px;
    }
}